FITS images used in this processing run:

Field CVn-03-Q2b1x1 reference image: CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
Field CVn-03-Q2b1x1 reference image: CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
Field CVn-03-Q2b1x1 second-epoch image: CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Field CVn-03-Q2b1x1 second-epoch image: CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

## VaST run with SExtractor config file default.sex.telephoto_lens_onlybrightstars_v1 ##
Images processed 4
Images used for photometry 4
Ref.  image: 2461172.80993912 12.05.2026 07:26:08.740   /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
First image: 2461172.80993912 12.05.2026 07:26:08.740   /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
Last  image: 2461271.68601154 19.08.2026 04:27:41.397   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
JD time system (TT/UTC/UNKNOWN): UTC
Transient candidates found: 2
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.43
Magnitude-Size filter: Disabled
For each source choose aperture with the smallest scatter: YES
Photometric errors rescaling: NO
Number of identified bad images: 0
Number of SysRem iterations: 0
User-specified moving object: none
Computation time: 9 seconds
Number of parallel threads: 3
SExtractor parameter file: default.sex
Some important SExtractor parameters:
DETECT_MINAREA  10.0             # minimum number of pixels above threshold
DETECT_THRESH   10.0             #  or , in mag.arcsec-2
ANALYSIS_THRESH 10.0             #  or , in mag.arcsec-2
SATUR_LEVEL     55000.0         # level (in ADUs) at which arises saturation
GAIN            0.37            # detector gain in e-/ADU
VAST_SKIP_INDEX_VS_MAG is set - skipping the lib/index_vs_mag variability-index fitting
Total objects detected (at least 2 times):  4094
Objects passed selection criteria:  4093
Measurements per detected object (mean, median, min, max):    3.4    4.0    2    4
Measurements per selected object (mean, median, min, max):    3.4    4.0    2    4
Average stars detected per image: 3701.5
Average stars matched: 3619 (97.7712 %)
Memory usage VmPeak:   231216 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Fri Aug 14 19:27:11 CDT 2026
VaST build number  1.0rc89-191-g1c132b07
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-08-14)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Wed Aug 19 00:46:38 CDT 2026
Host name: tau
############################################################
## VaST run with SExtractor config file default.sex.telephoto_lens_vSTL ##
Images processed 4
Images used for photometry 4
Ref.  image: 2461172.80993912 12.05.2026 07:26:08.740   /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
First image: 2461172.80993912 12.05.2026 07:26:08.740   /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
Last  image: 2461271.68601154 19.08.2026 04:27:41.397   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
JD time system (TT/UTC/UNKNOWN): UTC
Transient candidates found: 12
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.12
Magnitude-Size filter: Disabled
For each source choose aperture with the smallest scatter: YES
Photometric errors rescaling: NO
Number of identified bad images: 0
Number of SysRem iterations: 0
User-specified moving object: none
Computation time: 34 seconds
Number of parallel threads: 3
SExtractor parameter file: default.sex
Some important SExtractor parameters:
DETECT_MINAREA  2.0             # minimum number of pixels above threshold
DETECT_THRESH   3.0             #  or , in mag.arcsec-2
ANALYSIS_THRESH 3.0             #  or , in mag.arcsec-2
SATUR_LEVEL     57000.0         # level (in ADUs) at which arises saturation
GAIN            0.83            # detector gain in e-/ADU
WEIGHT_TYPE BACKGROUND
VAST_SKIP_INDEX_VS_MAG is set - skipping the lib/index_vs_mag variability-index fitting
Total objects detected (at least 2 times):  22848
Objects passed selection criteria:  22785
Measurements per detected object (mean, median, min, max):    3.4    4.0    2    4
Measurements per selected object (mean, median, min, max):    3.4    4.0    2    4
Average stars detected per image: 20695.5
Average stars matched: 20138 (97.3062 %)
Memory usage VmPeak:   249508 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Fri Aug 14 19:27:11 CDT 2026
VaST build number  1.0rc89-191-g1c132b07
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-08-14)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Wed Aug 19 00:48:29 CDT 2026
Host name: tau
############################################################

######## Processing parameters ########
AAVSO_COMMENT_STRING= NMW-TexasTech Camera-2 135mm f/2.2 telephoto lens + QHY600M CMOS
ASTCHECK_ASTEROID_SEARCH_RADIUS_ARCSEC= 
BAD_REGION_FILE= /var/www/nmw_calibration/TTUQ2b1x1/TTUQ2_bad_region.lst
CAMERA_SETTINGS= TTUQ2b1x1
CHECK_POINTING_ACCURACY= yes
DARK_FRAMES_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ2b1x1/darks
EXCLUSION_LIST= ../exclusion_list_TTUQ2.txt
FILTER_BAD_IMG__MAX_APERTURE_STAR_SIZE_PIX= 12.5
FILTER_BAD_IMG__MAX_ELONGATION_AminusB_PIX= 0.55
FILTER_BAD_IMG__MIN_APERTURE_STAR_SIZE_PIX= 2.0
FILTER_BRIGHT_MAG_CUTOFF_TRANSIENT_SEARCH= -5
FILTER_FAINT_MAG_CUTOFF_TRANSIENT_SEARCH= 15.5
FLAT_FIELD_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ2b1x1/flats
FRAME_EDGE_OFFSET_PIX= 600
GAIA_BAND_FOR_CATALOGED_SOURCE_CHECK= 
MAX_NEW_TO_REF_MEAN_IMG_VALUE_RATIO= 100
DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK= yes
MAX_NEW_IMG_MEAN_VALUE= 25000
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS= 0.18
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS_SOFT_LIMIT= 0.12
MPC_CODE= V36
NMW_CALIBRATION= /var/www/nmw_calibration
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_HARD_LIMIT= 10000
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_SOFT_LIMIT= 8000
OMP_NUM_THREADS= 3
ONLINE_MPCHECKER_BUTTON_ASTEROID_SEARCH_RADIUS_ARCMIN= 
PHOTOMETRIC_CALIBRATION= 
REQUIRE_PIX_SHIFT_BETWEEN_IMAGES_FOR_TRANSIENT_CANDIDATES= yes
SEXTRACTOR_CONFIG_BRIGHTSTARPASS= default.sex.telephoto_lens_onlybrightstars_v1
SEXTRACTOR_CONFIG_FILES= default.sex.telephoto_lens_onlybrightstars_v1 default.sex.telephoto_lens_vSTL
STARMATCH_RADIUS_PIX= 5
SYSREM_ITERATIONS= 0
TELESCOP= 
TELESCOP_NAME_KNOWN_TO_VaST_FOR_FOV_DETERMINATION= 
UCAC5_PLATESOLVE_ITERATIONS= 2
FPACK_FULLY_CALIBRATED_IMAGE= no
#######################################
HOSTNAME= tau
USER= 
HOME= 
#######################################
SExtractor catalog cache: enabled, directory /data_ssd/NMW-TexasTech/vast_sextractor_cache
Reference image directory is set to /data_ssd/NMW-TexasTech/reference_imgs
VIZIER_SITE=vizier.cds.unistra.fr
GAIA_DR2_CLIENT=vizquery (lib/vizquery -> VizieR vizier.cds.unistra.fr)
INFO: MAKE_PNG_PLOTS is set to yes
FITS_FILE_EXT=fits
CALIBRATION_STATUS_PREFIX=
Fields in the data directory: 
CVn-03-Q2b1x1
#######################################
########### Starting CVn-03-Q2b1x1 ###########
Processing CVn-03-Q2b1x1
server tau has sufficient free disk space available: 182426 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 182426 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
Small preview (one of the new images): 

Large previews of the second-epoch (new) images:

MAKE_PNG_PLOTS=yes


renamed 'CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.png' -> 'transient_report/CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits_preview.png'

CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits


renamed 'CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.png' -> 'transient_report/CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits_preview.png'

CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits




Read-check the input FITS images... read-check OK
Blank image check the input FITS images... blank-image-check OK
Read date check the input FITS images... read-date-check OK
Mean value check the input FITS images... OK, at least two new images have mean values below the threshold.
----------------------------------------------
INFO: REFERENCE_EPOCH__FIRST_IMAGE_MEAN_VALUE= 441.6545
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 449.7903
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1256.6206
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 421.7621
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1255.0682
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 420.6134
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 2.84526
INFO:                  SECOND_EPOCH__SD_ratio= 0.003
INFO: the new-to-reference mean image value ratio check is disabled (DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK=yes) - expected with a background-subtracted reference image
----------------------------------------------
Calibration settings: DARK_FRAMES_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ2b1x1/darks FLAT_FIELD_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ2b1x1/flats
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                  0.0 / [degC] CCD temperature
FOCTEMP =     24.9799995422363 / [degC] Focuser temperature
AMBTEMP =                 31.2 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits 
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-08-18T23:26:39.8556463' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-19T04:26:39.8556463' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61271.1851835069 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-19T04:26:49.7597884' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61271.1852981364 / Modified Julian Date of averaged midpoint" status=0
Record 16: "XBINNING=                    1 / X axis binning factor" status=0
Record 17: "YBINNING=                    1 / Y axis binning factor" status=0
Record 18: "GAIN    =                   30 / Sensor gain" status=0
Record 19: "OFFSET  =                   30 / Sensor gain offset" status=0
Record 20: "XPIXSZ  =                 3.76 / [um] Pixel X axis size" status=0
Record 21: "YPIXSZ  =                 3.76 / [um] Pixel Y axis size" status=0
Record 22: "INSTRUME= 'QHY600M'            / Imaging instrument name" status=0
Record 23: "CAMERAID= 'QHY600M-84137c4dbbbd119a9' / Imaging instrument identifier" status=0
Record 24: "SET-TEMP=                  0.0 / [degC] CCD temperature setpoint" status=0
Record 25: "CCD-TEMP=                  0.0 / [degC] CCD temperature" status=0
Record 26: "READOUTM= '2CMS-0'             / Sensor readout mode" status=0
Record 27: "USBLIMIT=                   50 / Camera-specific USB setting" status=0
Record 28: "TELESCOP= 'QHY600M-TTU2'       / Name of telescope" status=0
Record 29: "FOCALLEN=                135.0 / [mm] Focal length" status=0
Record 30: "FOCRATIO=                  2.2 / Focal ratio" status=0
Record 31: "RA      =     209.996818038704 / [deg] RA of telescope" status=0
Record 32: "DEC     =     29.9997967815285 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     22.1222222222222 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     292.026388888889 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.63979516600014 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'CVn-03'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '14 00 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+30 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "FOCNAME = 'ZWO Focuser'        / Focusing equipment name" status=0
Record 50: "FOCPOS  =                20447 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20447 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     24.9799995422363 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     24.9799995422363 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                  7.6 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 23.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               900.91 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 31.2 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 16.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             7.200576 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             6.100488 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/d_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits :)

Spent 0.709666 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/d_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 37096.658242
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits :)


No overscan detected - all values seem high! (left_median=24199.0, right_median=29433.0)
renamed 'mff_TTUQ2b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                  0.0 / [degC] CCD temperature
FOCTEMP =                 25.0 / [degC] Focuser temperature
AMBTEMP =                 31.2 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits 
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-08-18T23:27:41.3971192' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-19T04:27:41.3971192' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61271.1858957987 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-19T04:27:51.2982881' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61271.1860103933 / Modified Julian Date of averaged midpoint" status=0
Record 16: "XBINNING=                    1 / X axis binning factor" status=0
Record 17: "YBINNING=                    1 / Y axis binning factor" status=0
Record 18: "GAIN    =                   30 / Sensor gain" status=0
Record 19: "OFFSET  =                   30 / Sensor gain offset" status=0
Record 20: "XPIXSZ  =                 3.76 / [um] Pixel X axis size" status=0
Record 21: "YPIXSZ  =                 3.76 / [um] Pixel Y axis size" status=0
Record 22: "INSTRUME= 'QHY600M'            / Imaging instrument name" status=0
Record 23: "CAMERAID= 'QHY600M-84137c4dbbbd119a9' / Imaging instrument identifier" status=0
Record 24: "SET-TEMP=                  0.0 / [degC] CCD temperature setpoint" status=0
Record 25: "CCD-TEMP=                  0.0 / [degC] CCD temperature" status=0
Record 26: "READOUTM= '2CMS-0'             / Sensor readout mode" status=0
Record 27: "USBLIMIT=                   50 / Camera-specific USB setting" status=0
Record 28: "TELESCOP= 'QHY600M-TTU2'       / Name of telescope" status=0
Record 29: "FOCALLEN=                135.0 / [mm] Focal length" status=0
Record 30: "FOCRATIO=                  2.2 / Focal ratio" status=0
Record 31: "RA      =     209.996818088941 / [deg] RA of telescope" status=0
Record 32: "DEC     =     29.9997967899674 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     21.9227777777778 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =             292.1375 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =      2.6622825872661 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'CVn-03'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '14 00 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+30 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "FOCNAME = 'ZWO Focuser'        / Focusing equipment name" status=0
Record 50: "FOCPOS  =                20447 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20447 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =                 25.0 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=                 25.0 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                  7.6 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 23.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               900.91 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 31.2 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 16.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             7.200576 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             6.100488 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/d_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits :)

Spent 0.644856 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/d_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 37096.658242
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits :)


No overscan detected - all values seem high! (left_median=24199.0, right_median=29433.0)
renamed 'mff_TTUQ2b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Dark frame used to calibrate the second-epoch images:



Flat field used to calibrate the second-epoch images:



after the calibration attempt:
SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Previews of the CALIBRATED second-epoch images:


fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits



fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits




Updating neverexclude_list.txt
'/var/www/nmw_calibration/neverexclude_list.txt' -> './neverexclude_list.txt'
Choosing bad regions list
'/var/www/nmw_calibration/TTUQ2b1x1/TTUQ2_bad_region.lst' -> 'bad_region.lst'
wait
*------ default.sex.telephoto_lens_onlybrightstars_v1 ------*
'default.sex.telephoto_lens_onlybrightstars_v1' -> 'default.sex'
Starting VaST with default.sex.telephoto_lens_onlybrightstars_v1

  ./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
  
SExtractor catalog cache: saved CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.cat to cache
SExtractor catalog cache: saved CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_onlybrightstars_v1
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Checking WCS cache directory local_wcs_cache
Checking WCS cache directory /mnt/usb/NMW_NG/solved_reference_images
Found WCS cache directory /mnt/usb/NMW_NG/solved_reference_images
Checking WCS cache directory /home/NMW_web_upload/solved_reference_images
Checking WCS cache directory /dataX/kirx/NMW_NG_rt3_autumn2019/solved_reference_images
The reference JD(UT) for computing planet and comet positions: 2461271.68529925
Re-using ../asassn_transients_list.txt
'../asassn_transients_list.txt' -> 'asassn_transients_list.txt'
Re-using ../tocp_transients_list.txt
'../tocp_transients_list.txt' -> 'tocp_transients_list.txt'
Re-using ../tns_transients_list.txt
'../tns_transients_list.txt' -> 'tns_transients_list.txt'
Plate-solving the images
wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits exists and is non-empty
wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits exists and is non-empty
wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits exists and is non-empty
wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits exists and is non-empty
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits (1st reference image)
verification OK: wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
Image size: 941.4'x626.8'  15.7(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.90"/pix along the X axis and 5.89"/pix along the Y axis
Image center: 13:59:53.993 +29:59:36.41 J2000 4789.000 3195.000 
###################################
The image scale is 5.90"/pix, setting the soft and hard astrometric limits for filtering second-epoch detections: 5.9" and 8.9"
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits (1st new image)
verification OK: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Image size: 937.8'x624.0'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.88"/pix along the X axis and 5.86"/pix along the Y axis
Image center: 14:00:19.905 +29:58:43.12 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the first second-epoch image (pointing accuracy)
Reference image center 13:59:53.993 +29:59:36.41
Second-epoch image center 14:00:19.905 +29:58:43.12
Angular distance between the image centers 0.0947 deg.
Soft limit: 0.50 deg.  Hard limit: 1.00 deg.
###################################
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits (2nd new image)
verification OK: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Image size: 937.8'x624.0'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.88"/pix along the X axis and 5.86"/pix along the Y axis
Image center: 14:00:21.899 +29:59:23.13 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the second second-epoch image (pointing accuracy)
Reference image center 13:59:53.993 +29:59:36.41
Second-epoch image center 14:00:21.899 +29:59:23.13
Angular distance between the image centers 0.1008 deg.
###################################
###################################
# Check the image center offset between the first and the second second-epoch image (shift should be applied between the second-epoch images)
Second-epoch first image center  14:00:19.905 +29:58:43.12
Second-epoch second image center 14:00:21.899 +29:59:23.13
Angular distance between the image centers 0.01324 deg.
###################################
Running solve_plate_with_UCAC5...
Preparing for a parallel run
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits &> /tmp/tmp.h9fsVAZMVP
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits &> /tmp/tmp.viHU7E4Mi8
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits &> /tmp/tmp.38p9TVlTfp
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits &> /tmp/tmp.jCOt3vXn67
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Calibrating the magnitude scale
Found non-empty wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
____ Start of magnitude calibration ____
PHOTOMETRIC_CALIBRATION=TYCHO2_V
Calibrating the magnitude scale with Tycho-2 stars
util/transients/transient_factory_test31.sh is checking for the presence of non-empty wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits and wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat 
wait (drain background util/solve_plate_with_UCAC5 jobs before Tycho-2 calibration -- avoids wcs_.fits write race)
Tycho-2 catalog is found at lib/catalogs/tycho2
Tycho-2 catalog and the derived bright star exclusion list are ready
Checking for the presence of non-empty wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits and wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat 
Found non-empty wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits and wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat
The reference image (wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits) and catalog (wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat) found
'wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat' -> 'wcsmag.cat'
Read 5741 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 200.7871 to 219.7284 deg, Dec +24.1042 to +35.4404 deg
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19
Tycho-2 catalog search boundaries: RA 200.7871 to 219.7284 deg, Dec 24.1042 to 35.4404 deg
Loaded 4629 Tycho-2 stars within the image boundaries (VT and BT non-zero).
Relation between the catalog and instrumental magnitudes is written to calib.txt
Stars used for magnitude calibration (good matches): 3337 out of 3474 total matches.
Matched with Tycho-2 3474 out of 5741 detected stars.
The calibration function type and coefficients are written to calib.txt_param
util/calibrate_magnitude_scale 0.000000 1.000000 22.826300
a=0.000000 b=1.000000 c=22.826300
From vast_summary.log: estimated ref. image limiting mag.:  -7.43
Updating vast_summary.log: Estimated ref. image limiting mag.:  15.40

Updated vast_limiting_magnitude.log with calibrated magnitudes
Working...
Please, PLEASE, be patient!!!
All lightcurves processed!  =)
Estimated ref. image limiting mag.:  15.40

Lightcurve magnitude calibration plot:


Preparing per-reference-image forced-photometry calibration (method=tycho2 band=V)
Read 5741 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 200.7871 to 219.7284 deg, Dec +24.1042 to +35.4404 deg
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19
Tycho-2 catalog search boundaries: RA 200.7871 to 219.7284 deg, Dec 24.1042 to 35.4404 deg
Loaded 4629 Tycho-2 stars within the image boundaries (VT and BT non-zero).
Relation between the catalog and instrumental magnitudes is written to calib.txt
Stars used for magnitude calibration (good matches): 3337 out of 3474 total matches.
Matched with Tycho-2 3474 out of 5741 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00001.cat.aperture for wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
Forced-photometry filter: calibrated wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits -> calib.txt_param_ref_wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits (aperture=6.3)
Read 5486 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 200.5266 to 219.4468 deg, Dec +24.5771 to +35.2409 deg
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19
Tycho-2 catalog search boundaries: RA 200.5266 to 219.4468 deg, Dec 24.5771 to 35.2409 deg
Loaded 4376 Tycho-2 stars within the image boundaries (VT and BT non-zero).
Relation between the catalog and instrumental magnitudes is written to calib.txt
Stars used for magnitude calibration (good matches): 3394 out of 3469 total matches.
Matched with Tycho-2 3469 out of 5486 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00002.cat.aperture for wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
Forced-photometry filter: calibrated wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits -> calib.txt_param_ref_wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits (aperture=6.3)
____ End of magnitude calibration ____
Applying consolidated magnitude filters...
Preparing the exclusion lists for this field
Done with filtering
Found 2 candidate transients before the final filtering.  (Hard limit: 10000)
Median FWHM seeing for isolated stars:
 2.2 pix  CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
 2.3 pix  CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
 2.3 pix  fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
 2.3 pix  fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Limiting magnitude estimates:
cp: cannot create regular file 'local_wcs_cache/': Not a directory
 15.4 mag.  CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
 15.2 mag.  CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
 14.7 mag.  fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
 14.7 mag.  fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
All-image limiting magnitude estimate:  14.7 (SNR )  11.8 (80% of stars)  with default.sex.telephoto_lens_onlybrightstars_v1
The first estimate is the magnitude of a star detected with a signal-to-noise ratio of  following Karpov (2025, Acta Polytechnica, 65, 50). 
This value should be representative of the faintest stars clearly visible in the image. 
The brighter of the limiting magnitude estimates for the two second-epoch images is reported here.
The second estimate is the 80th percentile of the magnitude distribution of stars detected on all four images.
This value is representative of the faintest object that may enter the candidate transients list.
The hard cut-off for the candidate transients is 15.5 mag.
Waiting for UCAC5 plate solver
wait
############ /tmp/tmp.h9fsVAZMVP (6) ############
Parsing command line arguments...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits is already a symlink and we do not allow symlinks on symlinks
The guess is based on the existing WCS header.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits 574.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits is already a symlink and we do not allow symlinks on symlinks
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits' -> 'wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits'
This WCS solution (astrometrynet) will be kept as is, not refit by util/solve_plate_with_UCAC5
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
WCS_IMAGE_NAME=wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
WCS-calibrated image found: wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
Checking if the catalog wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat corresponding to the image wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits alredy exist and is non-empty...
Catalog wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat corresponding to the image wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
WCS catalog name: wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat 
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=0, blended=365, bad_region=1180, passed=5741
Got 5741 stars (including 4280 good ones) from the SExtractor catalog wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat 
util/solve_plate_with_UCAC5 got 5741 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 941.4'
Seting catalog search parameters based on the expected field of view 941.4 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013075 (47.1 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010460 (37.7 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 570 to 629 (Dec 24.1 to 35.4)
Done reading UCAC5 zone files...
Matched 4170 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4161 matched stars entering correct_measured_positions(), 4161 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4161 matched stars entering correct_measured_positions(), 4812 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 570 to 629 (Dec 24.1 to 35.4)
Done reading UCAC5 zone files...
Matched 4170 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4161 matched stars entering correct_measured_positions(), 4812 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.30" 
Accuracy estimation diagnostic: 4161 matched stars entering correct_measured_positions(), 4812 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.30" 
Excluding outliers - 4161 stars left (next iteration limit 4577)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: util/identify.sh trusts the WCS of wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits N_match=4161 sigma_overall_arcsec=0.347 sigma_q1_arcsec=0.339 sigma_q2_arcsec=0.528 sigma_q3_arcsec=0.305 sigma_q4_arcsec=0.317 n_q1=1304 n_q2=677 n_q3=1477 n_q4=703 worst_quadrant_to_overall_ratio=1.521
The image catalog is written to wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits -region wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
############ /tmp/tmp.viHU7E4Mi8 (6) ############
Parsing command line arguments...
The guess is based on the existing WCS header.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits 571.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits' -> 'wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits'
This WCS solution (astrometrynet) will be kept as is, not refit by util/solve_plate_with_UCAC5
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
WCS_IMAGE_NAME=wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
WCS-calibrated image found: wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
Checking if the catalog wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat corresponding to the image wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits alredy exist and is non-empty...
Catalog wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat corresponding to the image wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
WCS catalog name: wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat 
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=0, blended=263, bad_region=1200, passed=5486
Got 5486 stars (including 4067 good ones) from the SExtractor catalog wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat 
util/solve_plate_with_UCAC5 got 5486 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.2'
Seting catalog search parameters based on the expected field of view 937.2 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013017 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010413 (37.5 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 572 to 628 (Dec 24.6 to 35.2)
Done reading UCAC5 zone files...
Matched 3960 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 3953 matched stars entering correct_measured_positions(), 3953 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 3953 matched stars entering correct_measured_positions(), 4527 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 572 to 628 (Dec 24.6 to 35.2)
Done reading UCAC5 zone files...
Matched 3960 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 3953 matched stars entering correct_measured_positions(), 4527 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.31" 
Accuracy estimation diagnostic: 3953 matched stars entering correct_measured_positions(), 4527 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.31" 
Excluding outliers - 3953 stars left (next iteration limit 4348)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: util/identify.sh trusts the WCS of wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits N_match=3953 sigma_overall_arcsec=0.330 sigma_q1_arcsec=0.296 sigma_q2_arcsec=0.347 sigma_q3_arcsec=0.356 sigma_q4_arcsec=0.336 n_q1=1251 n_q2=764 n_q3=1275 n_q4=663 worst_quadrant_to_overall_ratio=1.077
The image catalog is written to wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits -region wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
############ /tmp/tmp.38p9TVlTfp (6) ############
Parsing command line arguments...
The minor axis of the CCD chip should be 24.0 mm based on the derived pixel size of 3.8 um
Internal estimated FoV 605.3'
The guess is based on the FOCALLEN keyword.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
WCS_IMAGE_NAME=wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
WCS-calibrated image found: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Checking if the catalog wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat corresponding to the image wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits alredy exist and is non-empty...
Catalog wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat corresponding to the image wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
WCS catalog name: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat 
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=0, blended=199, bad_region=629, passed=3665
Got 3665 stars (including 2879 good ones) from the SExtractor catalog wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat 
util/solve_plate_with_UCAC5 got 3665 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.8'
Seting catalog search parameters based on the expected field of view 937.8 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013025 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010420 (37.5 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 572 to 628 (Dec 24.5 to 35.2)
Done reading UCAC5 zone files...
Matched 2809 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 2801 matched stars entering correct_measured_positions(), 2803 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.30" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 2801 matched stars entering correct_measured_positions(), 3165 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.30" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 572 to 628 (Dec 24.5 to 35.2)
Done reading UCAC5 zone files...
Matched 2810 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 2804 matched stars entering correct_measured_positions(), 3165 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.31" 
Accuracy estimation diagnostic: 2804 matched stars entering correct_measured_positions(), 3165 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.31" 
Excluding outliers - 2804 stars left (next iteration limit 3081)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: SIP order 2 trial: matched=2804 robust_rms=6.180 arcsec worst_quadrant_rms=10.656 arcsec
SIP_REFIT: SIP order 3 trial: matched=2804 robust_rms=0.380 arcsec worst_quadrant_rms=0.411 arcsec
SIP_REFIT: SIP order 5 trial: matched=2804 robust_rms=0.333 arcsec worst_quadrant_rms=0.369 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=2804 robust_rms_before=0.877 arcsec robust_rms_before_corrected=0.316 arcsec robust_rms_after=0.333 arcsec worst_quadrant_rms_before=0.345 worst_quadrant_rms_after=0.369
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.345 arcsec) - keeping the original
WCS_QUALITY_DIAG: file=fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits N_match=2804 sigma_overall_arcsec=0.329 sigma_q1_arcsec=0.318 sigma_q2_arcsec=0.345 sigma_q3_arcsec=0.326 sigma_q4_arcsec=0.348 n_q1=970 n_q2=516 n_q3=898 n_q4=420 worst_quadrant_to_overall_ratio=1.057
The image catalog is written to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits -region wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
############ /tmp/tmp.jCOt3vXn67 (6) ############
Parsing command line arguments...
The minor axis of the CCD chip should be 24.0 mm based on the derived pixel size of 3.8 um
Internal estimated FoV 605.3'
The guess is based on the FOCALLEN keyword.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
WCS_IMAGE_NAME=wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
WCS-calibrated image found: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Checking if the catalog wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat corresponding to the image wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits alredy exist and is non-empty...
Catalog wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat corresponding to the image wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
WCS catalog name: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat 
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=0, blended=178, bad_region=639, passed=3636
Got 3636 stars (including 2849 good ones) from the SExtractor catalog wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat 
util/solve_plate_with_UCAC5 got 3636 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.8'
Seting catalog search parameters based on the expected field of view 937.8 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013025 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010420 (37.5 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 572 to 628 (Dec 24.5 to 35.2)
Done reading UCAC5 zone files...
Matched 2783 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 2777 matched stars entering correct_measured_positions(), 2779 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.30" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 2777 matched stars entering correct_measured_positions(), 3131 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.30" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 572 to 628 (Dec 24.5 to 35.2)
Done reading UCAC5 zone files...
Matched 2783 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 2778 matched stars entering correct_measured_positions(), 3131 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.31" 
Accuracy estimation diagnostic: 2778 matched stars entering correct_measured_positions(), 3131 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.31" 
Excluding outliers - 2778 stars left (next iteration limit 3054)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: SIP order 2 trial: matched=2778 robust_rms=6.142 arcsec worst_quadrant_rms=10.599 arcsec
SIP_REFIT: SIP order 3 trial: matched=2778 robust_rms=0.386 arcsec worst_quadrant_rms=0.406 arcsec
SIP_REFIT: SIP order 5 trial: matched=2778 robust_rms=0.333 arcsec worst_quadrant_rms=0.381 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=2778 robust_rms_before=0.886 arcsec robust_rms_before_corrected=0.319 arcsec robust_rms_after=0.333 arcsec worst_quadrant_rms_before=0.353 worst_quadrant_rms_after=0.381
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.353 arcsec) - keeping the original
WCS_QUALITY_DIAG: file=fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits N_match=2778 sigma_overall_arcsec=0.334 sigma_q1_arcsec=0.318 sigma_q2_arcsec=0.357 sigma_q3_arcsec=0.335 sigma_q4_arcsec=0.351 n_q1=948 n_q2=509 n_q3=900 n_q4=421 worst_quadrant_to_overall_ratio=1.071
The image catalog is written to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits -region wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
Saving the final (post-refit) wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits to local_wcs_cache/
'wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits' -> 'local_wcs_cache/wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits'
Saving the final (post-refit) wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits to local_wcs_cache/
'wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits' -> 'local_wcs_cache/wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits'
Saving the final (post-refit) wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits to local_wcs_cache/
'wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits' -> 'local_wcs_cache/wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits'
Saving the final (post-refit) wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits to local_wcs_cache/
'wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits' -> 'local_wcs_cache/wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits'
###################################
# Pre-local-correction WCS quality summary (see WCS_QUALITY_DIAG lines above)
ref1=CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits sigma_overall=0.347 worst_q_ratio=1.521
ref2=CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits sigma_overall=0.330 worst_q_ratio=1.077
new1=fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits sigma_overall=0.329 worst_q_ratio=1.057
new2=fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits sigma_overall=0.334 worst_q_ratio=1.071
reference average sigma_overall=0.3385 worst_q_ratio=1.299
warn-on-ratio threshold: 2.0x reference
###################################

Astrometric residual vector field (catalog-matched stars):

plot_astrometric_residuals_xy.py: wrote wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257_astrometric_residuals.png (4161 matched stars from wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.31 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603_astrometric_residuals.png (3953 matched stars from wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.30 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138_astrometric_residuals.png (2804 matched stars from wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.29 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139_astrometric_residuals.png (2778 matched stars from wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.30 arcsec)


Copying WCS-calibrated images back to input directory
Saving fully-calibrated image wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits'
Saving fully-calibrated image wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits'
Preparing the HTML report for the field CVn-03-Q2b1x1 with default.sex.telephoto_lens_onlybrightstars_v1
Forced photometry on wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits at 13:42:00.61 +28:22:57.7:  11.76 +/- 0.02  detection
Forced photometry on wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits at 13:42:00.61 +28:22:57.7:  11.76 +/- 0.02  detection
Forced photometry reference-image weighted average:  11.76 +/- 0.01
Forced photometry filter REJECTED candidate at 13:42:00.61 +28:22:57.7: ref_mag=11.76 +/- 0.01 new_mean_mag=11.7839 delta=-0.02 (need > 0.90)
make_report_in_HTML.sh Phase 1 (network queries): 2s
Pre-generating preview images in parallel...
Done pre-generating preview images.
Pre-generating finding charts in parallel...
Done pre-generating finding charts.
make_report_in_HTML.sh Pre-generation: 0s
  
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Considering the candidate 20315_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 20315_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 2     2026 08 19.18601    2461271.68601    10.96    13:48:44.78 +33:43:32.5   6233 0897   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

**** FOUND  13:48:44.78 +33:43:32.5 in the exclusion list exclusion_list.txt ****
  
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Considering the candidate 20321_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 20321_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 1     2026 08 19.18530    2461271.68530    11.82    13:42:00.47 +28:22:58.2   7235 4090   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Discovery image 2     2026 08 19.18601    2461271.68601    11.75    13:42:00.75 +28:22:57.3   7239 4096   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

make_report_in_HTML.sh Phase 2 (HTML assembly): 1s
make_report_in_HTML.sh TOTAL: 3s
Prepared the HTML report for the field CVn-03-Q2b1x1 with default.sex.telephoto_lens_onlybrightstars_v1
*------ done with default.sex.telephoto_lens_onlybrightstars_v1 ------*
#### The local exclusion list is exclusion_list_local.txt ####
wait
*------ default.sex.telephoto_lens_vSTL ------*
'default.sex.telephoto_lens_vSTL' -> 'default.sex'
Starting VaST with default.sex.telephoto_lens_vSTL

  ./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
  
SExtractor catalog cache: saved CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.cat to cache
SExtractor catalog cache: saved CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_vSTL
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Checking WCS cache directory local_wcs_cache
Found WCS cache directory local_wcs_cache
Creating symlink local_wcs_cache/wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
Creating symlink local_wcs_cache/wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
Creating symlink local_wcs_cache/wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Creating symlink local_wcs_cache/wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Checking WCS cache directory /mnt/usb/NMW_NG/solved_reference_images
Found WCS cache directory /mnt/usb/NMW_NG/solved_reference_images
Checking WCS cache directory /home/NMW_web_upload/solved_reference_images
Checking WCS cache directory /dataX/kirx/NMW_NG_rt3_autumn2019/solved_reference_images
Plate-solving the images
wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits exists and is non-empty
wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits exists and is non-empty
wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits exists and is non-empty
wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits exists and is non-empty
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits (1st reference image)
verification OK: wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
Image size: 941.4'x626.8'  15.7(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.90"/pix along the X axis and 5.89"/pix along the Y axis
Image center: 13:59:53.993 +29:59:36.41 J2000 4789.000 3195.000 
###################################
The image scale is 5.90"/pix, setting the soft and hard astrometric limits for filtering second-epoch detections: 5.9" and 8.9"
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits (1st new image)
verification OK: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Image size: 937.8'x624.0'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.88"/pix along the X axis and 5.86"/pix along the Y axis
Image center: 14:00:19.905 +29:58:43.12 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the first second-epoch image (pointing accuracy)
Reference image center 13:59:53.993 +29:59:36.41
Second-epoch image center 14:00:19.905 +29:58:43.12
Angular distance between the image centers 0.0947 deg.
Soft limit: 0.50 deg.  Hard limit: 1.00 deg.
###################################
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits (2nd new image)
verification OK: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Image size: 937.8'x624.0'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.88"/pix along the X axis and 5.86"/pix along the Y axis
Image center: 14:00:21.899 +29:59:23.13 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the second second-epoch image (pointing accuracy)
Reference image center 13:59:53.993 +29:59:36.41
Second-epoch image center 14:00:21.899 +29:59:23.13
Angular distance between the image centers 0.1008 deg.
###################################
###################################
# Check the image center offset between the first and the second second-epoch image (shift should be applied between the second-epoch images)
Second-epoch first image center  14:00:19.905 +29:58:43.12
Second-epoch second image center 14:00:21.899 +29:59:23.13
Angular distance between the image centers 0.01324 deg.
###################################
Running solve_plate_with_UCAC5...
Preparing for a parallel run
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits &> /tmp/tmp.XcXP2q47w1
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits &> /tmp/tmp.IwPm2eUozF
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits &> /tmp/tmp.yc9mFTi53A
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits &> /tmp/tmp.C6yXtlfM9Z
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Calibrating the magnitude scale
Found non-empty wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
____ Start of magnitude calibration ____
PHOTOMETRIC_CALIBRATION=TYCHO2_V
Calibrating the magnitude scale with Tycho-2 stars
util/transients/transient_factory_test31.sh is checking for the presence of non-empty wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits and wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat 
wait (drain background util/solve_plate_with_UCAC5 jobs before Tycho-2 calibration -- avoids wcs_.fits write race)
Tycho-2 catalog is found at lib/catalogs/tycho2
Tycho-2 catalog and the derived bright star exclusion list are ready
Checking for the presence of non-empty wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits and wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat 
Found non-empty wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits and wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat
The reference image (wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits) and catalog (wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat) found
'wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat' -> 'wcsmag.cat'
Read 32125 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 200.7871 to 219.7989 deg, Dec +24.0573 to +35.4472 deg
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19
Tycho-2 catalog search boundaries: RA 200.7871 to 219.7989 deg, Dec 24.0573 to 35.4472 deg
Loaded 4685 Tycho-2 stars within the image boundaries (VT and BT non-zero).
Relation between the catalog and instrumental magnitudes is written to calib.txt
Stars used for magnitude calibration (good matches): 3238 out of 3517 total matches.
Matched with Tycho-2 3517 out of 32125 detected stars.
The calibration function type and coefficients are written to calib.txt_param
util/calibrate_magnitude_scale 0.000000 1.000000 22.704250
a=0.000000 b=1.000000 c=22.704250
From vast_summary.log: estimated ref. image limiting mag.:  -7.12
Updating vast_summary.log: Estimated ref. image limiting mag.:  15.58

Updated vast_limiting_magnitude.log with calibrated magnitudes
Working...
Please, PLEASE, be patient!!!
All lightcurves processed!  =)
Estimated ref. image limiting mag.:  15.58

Lightcurve magnitude calibration plot:


Preparing per-reference-image forced-photometry calibration (method=tycho2 band=V)
Read 32125 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 200.7871 to 219.7989 deg, Dec +24.0573 to +35.4472 deg
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19
Tycho-2 catalog search boundaries: RA 200.7871 to 219.7989 deg, Dec 24.0573 to 35.4472 deg
Loaded 4685 Tycho-2 stars within the image boundaries (VT and BT non-zero).
Relation between the catalog and instrumental magnitudes is written to calib.txt
Stars used for magnitude calibration (good matches): 3238 out of 3517 total matches.
Matched with Tycho-2 3517 out of 32125 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00001.cat.aperture for wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
Forced-photometry filter: calibrated wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits -> calib.txt_param_ref_wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits (aperture=4.8)
Read 28454 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 200.4699 to 219.4762 deg, Dec +24.5089 to +35.2602 deg
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19
Tycho-2 catalog search boundaries: RA 200.4699 to 219.4762 deg, Dec 24.5089 to 35.2602 deg
Loaded 4427 Tycho-2 stars within the image boundaries (VT and BT non-zero).
Relation between the catalog and instrumental magnitudes is written to calib.txt
Stars used for magnitude calibration (good matches): 3312 out of 3502 total matches.
Matched with Tycho-2 3502 out of 28454 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00002.cat.aperture for wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
Forced-photometry filter: calibrated wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits -> calib.txt_param_ref_wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits (aperture=4.9)
____ End of magnitude calibration ____
Applying consolidated magnitude filters...
Preparing the exclusion lists for this field
Done with filtering
Found 11 candidate transients before the final filtering.  (Hard limit: 10000)
Median FWHM seeing for isolated stars:
 2.0 pix  CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
 2.2 pix  CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
 2.3 pix  fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
 2.3 pix  fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Limiting magnitude estimates:
 15.6 mag.  CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
 15.4 mag.  CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
 14.7 mag.  fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
 14.7 mag.  fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
All-image limiting magnitude estimate:  14.7 (SNR )  14.2 (80% of stars)  with default.sex.telephoto_lens_vSTL
The first estimate is the magnitude of a star detected with a signal-to-noise ratio of  following Karpov (2025, Acta Polytechnica, 65, 50). 
This value should be representative of the faintest stars clearly visible in the image. 
The brighter of the limiting magnitude estimates for the two second-epoch images is reported here.
The second estimate is the 80th percentile of the magnitude distribution of stars detected on all four images.
This value is representative of the faintest object that may enter the candidate transients list.
The hard cut-off for the candidate transients is 15.5 mag.
Waiting for UCAC5 plate solver
wait
############ /tmp/tmp.XcXP2q47w1 (6) ############
Parsing command line arguments...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits is already a symlink and we do not allow symlinks on symlinks
The guess is based on the existing WCS header.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits 574.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits is already a symlink and we do not allow symlinks on symlinks
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits' -> 'wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits'
This WCS solution (astrometrynet) will be kept as is, not refit by util/solve_plate_with_UCAC5
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
WCS_IMAGE_NAME=wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
WCS-calibrated image found: wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
Checking if the catalog wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat corresponding to the image wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits alredy exist and is non-empty...
Catalog wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat corresponding to the image wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits
WCS catalog name: wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat 
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=29, blended=1187, bad_region=5833, passed=32096
Got 32096 stars (including 25274 good ones) from the SExtractor catalog wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat 
util/solve_plate_with_UCAC5 got 32096 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 941.4'
Seting catalog search parameters based on the expected field of view 941.4 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013075 (47.1 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010460 (37.7 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 570 to 629 (Dec 24.1 to 35.4)
Done reading UCAC5 zone files...
Matched 4858 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4847 matched stars entering correct_measured_positions(), 4847 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4847 matched stars entering correct_measured_positions(), 27588 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 570 to 629 (Dec 24.1 to 35.4)
Done reading UCAC5 zone files...
Matched 4858 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4847 matched stars entering correct_measured_positions(), 27588 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 
Accuracy estimation diagnostic: 4847 matched stars entering correct_measured_positions(), 27588 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.31" 
Excluding outliers - 4847 stars left (next iteration limit 5331)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits is a symbolic link - will not rewrite the WCS of whatever it points to, but will still refit the output catalog positions
SIP_REFIT: util/identify.sh trusts the WCS of wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits N_match=4847 sigma_overall_arcsec=0.347 sigma_q1_arcsec=0.347 sigma_q2_arcsec=0.496 sigma_q3_arcsec=0.301 sigma_q4_arcsec=0.326 n_q1=1584 n_q2=858 n_q3=1612 n_q4=793 worst_quadrant_to_overall_ratio=1.430
The image catalog is written to wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits -region wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
############ /tmp/tmp.IwPm2eUozF (6) ############
Parsing command line arguments...
The guess is based on the existing WCS header.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits 571.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits' -> 'wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits'
This WCS solution (astrometrynet) will be kept as is, not refit by util/solve_plate_with_UCAC5
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
WCS_IMAGE_NAME=wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
WCS-calibrated image found: wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
Checking if the catalog wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat corresponding to the image wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits alredy exist and is non-empty...
Catalog wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat corresponding to the image wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits
WCS catalog name: wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat 
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=11, blended=1014, bad_region=4611, passed=28443
Got 28443 stars (including 23016 good ones) from the SExtractor catalog wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat 
util/solve_plate_with_UCAC5 got 28443 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.2'
Seting catalog search parameters based on the expected field of view 937.2 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013017 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010413 (37.5 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 572 to 628 (Dec 24.5 to 35.3)
Done reading UCAC5 zone files...
Matched 4861 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4852 matched stars entering correct_measured_positions(), 4852 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4852 matched stars entering correct_measured_positions(), 25017 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 572 to 628 (Dec 24.5 to 35.3)
Done reading UCAC5 zone files...
Matched 4861 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4852 matched stars entering correct_measured_positions(), 25017 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.30" 
Accuracy estimation diagnostic: 4852 matched stars entering correct_measured_positions(), 25017 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.31" 
Excluding outliers - 4852 stars left (next iteration limit 5337)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits is a symbolic link - will not rewrite the WCS of whatever it points to, but will still refit the output catalog positions
SIP_REFIT: util/identify.sh trusts the WCS of wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits N_match=4852 sigma_overall_arcsec=0.329 sigma_q1_arcsec=0.296 sigma_q2_arcsec=0.345 sigma_q3_arcsec=0.355 sigma_q4_arcsec=0.332 n_q1=1527 n_q2=917 n_q3=1553 n_q4=855 worst_quadrant_to_overall_ratio=1.078
The image catalog is written to wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits -region wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
############ /tmp/tmp.yc9mFTi53A (6) ############
Parsing command line arguments...
The minor axis of the CCD chip should be 24.0 mm based on the derived pixel size of 3.8 um
Internal estimated FoV 605.3'
The guess is based on the FOCALLEN keyword.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
WCS_IMAGE_NAME=wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
WCS-calibrated image found: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Checking if the catalog wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat corresponding to the image wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits alredy exist and is non-empty...
Catalog wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat corresponding to the image wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
WCS catalog name: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat 
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=5, blended=755, bad_region=2320, passed=18822
Got 18822 stars (including 16047 good ones) from the SExtractor catalog wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat 
util/solve_plate_with_UCAC5 got 18822 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.8'
Seting catalog search parameters based on the expected field of view 937.8 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013025 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010420 (37.5 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 572 to 628 (Dec 24.5 to 35.2)
Done reading UCAC5 zone files...
Matched 4854 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4840 matched stars entering correct_measured_positions(), 4840 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4840 matched stars entering correct_measured_positions(), 17099 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 572 to 628 (Dec 24.5 to 35.2)
Done reading UCAC5 zone files...
Matched 4855 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4842 matched stars entering correct_measured_positions(), 17099 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Accuracy estimation diagnostic: 4842 matched stars entering correct_measured_positions(), 17099 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.35" 
Excluding outliers - 4842 stars left (next iteration limit 5324)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits is a symbolic link - will not rewrite the WCS of whatever it points to, but will still refit the output catalog positions
SIP_REFIT: SIP order 2 trial: matched=4842 robust_rms=5.912 arcsec worst_quadrant_rms=11.857 arcsec
SIP_REFIT: SIP order 3 trial: matched=4842 robust_rms=0.423 arcsec worst_quadrant_rms=0.452 arcsec
SIP_REFIT: SIP order 5 trial: matched=4842 robust_rms=0.379 arcsec worst_quadrant_rms=0.427 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=4842 robust_rms_before=0.911 arcsec robust_rms_before_corrected=0.359 arcsec robust_rms_after=0.379 arcsec worst_quadrant_rms_before=0.413 worst_quadrant_rms_after=0.427
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.413 arcsec) - keeping the original
WCS_QUALITY_DIAG: file=fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits N_match=4842 sigma_overall_arcsec=0.359 sigma_q1_arcsec=0.341 sigma_q2_arcsec=0.386 sigma_q3_arcsec=0.351 sigma_q4_arcsec=0.397 n_q1=1640 n_q2=807 n_q3=1666 n_q4=729 worst_quadrant_to_overall_ratio=1.105
The image catalog is written to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits -region wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
############ /tmp/tmp.C6yXtlfM9Z (6) ############
Parsing command line arguments...
The minor axis of the CCD chip should be 24.0 mm based on the derived pixel size of 3.8 um
Internal estimated FoV 605.3'
The guess is based on the FOCALLEN keyword.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
WCS_IMAGE_NAME=wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
WCS-calibrated image found: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Checking if the catalog wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat corresponding to the image wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits alredy exist and is non-empty...
Catalog wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat corresponding to the image wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
WCS catalog name: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat 
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=3, blended=891, bad_region=2308, passed=19088
Got 19088 stars (including 16218 good ones) from the SExtractor catalog wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat 
util/solve_plate_with_UCAC5 got 19088 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.8'
Seting catalog search parameters based on the expected field of view 937.8 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013025 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010420 (37.5 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 572 to 628 (Dec 24.5 to 35.3)
Done reading UCAC5 zone files...
Matched 4846 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4830 matched stars entering correct_measured_positions(), 4830 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.33" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4830 matched stars entering correct_measured_positions(), 17378 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.32" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 572 to 628 (Dec 24.5 to 35.3)
Done reading UCAC5 zone files...
Matched 4847 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4832 matched stars entering correct_measured_positions(), 17378 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.33" 
Accuracy estimation diagnostic: 4832 matched stars entering correct_measured_positions(), 17378 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Excluding outliers - 4832 stars left (next iteration limit 5313)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits is a symbolic link - will not rewrite the WCS of whatever it points to, but will still refit the output catalog positions
SIP_REFIT: SIP order 2 trial: matched=4832 robust_rms=5.800 arcsec worst_quadrant_rms=12.210 arcsec
SIP_REFIT: SIP order 3 trial: matched=4832 robust_rms=0.434 arcsec worst_quadrant_rms=0.469 arcsec
SIP_REFIT: SIP order 5 trial: matched=4832 robust_rms=0.375 arcsec worst_quadrant_rms=0.441 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=4832 robust_rms_before=0.920 arcsec robust_rms_before_corrected=0.355 arcsec robust_rms_after=0.375 arcsec worst_quadrant_rms_before=0.406 worst_quadrant_rms_after=0.441
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.406 arcsec) - keeping the original
WCS_QUALITY_DIAG: file=fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits N_match=4832 sigma_overall_arcsec=0.361 sigma_q1_arcsec=0.352 sigma_q2_arcsec=0.378 sigma_q3_arcsec=0.351 sigma_q4_arcsec=0.390 n_q1=1634 n_q2=803 n_q3=1661 n_q4=734 worst_quadrant_to_overall_ratio=1.080
The image catalog is written to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits -region wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
Skipping WCS quality comparison: not the first SExtractor pass (default.sex.telephoto_lens_vSTL)
Copying WCS-calibrated images back to input directory
Saving fully-calibrated image wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
The destination file is already there - not rewriting /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Saving fully-calibrated image wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
The destination file is already there - not rewriting /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Preparing the HTML report for the field CVn-03-Q2b1x1 with default.sex.telephoto_lens_vSTL
Forced photometry on wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits at 13:42:09.54 +28:20:05.4:  13.21 +/- 0.07  detection
Forced photometry on wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits at 14:05:43.03 +28:44:47.8:  13.00 +/- 0.02  detection
Forced photometry on wcs_CVn-03-Q2b1x1_2026-05-12_02-26-08_20.00sec_-4.90C_LIGHTs_0257.fits at 14:20:18.76 +31:42:40.3:  13.13 +/- 0.02  detection
Forced photometry on wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits at 13:42:09.54 +28:20:05.4:  13.12 +/- 0.06  detection
Forced photometry reference-image weighted average:  13.16 +/- 0.04
Forced photometry on wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits at 14:05:43.03 +28:44:47.8:  12.96 +/- 0.02  detection
Forced photometry filter REJECTED candidate at 13:42:09.54 +28:20:05.4: ref_mag=13.16 +/- 0.04 new_mean_mag=13.1717 delta=-0.01 (need > 0.90)
Forced photometry reference-image weighted average:  12.98 +/- 0.01
Forced photometry filter REJECTED candidate at 14:05:43.03 +28:44:47.8: ref_mag=12.98 +/- 0.01 new_mean_mag=13.0557 delta=-0.07 (need > 0.90)
Forced photometry on wcs_CVn-03-Q2b1x1_2026-05-18_01-23-40_20.00sec_5.00C_LIGHT_1603.fits at 14:20:18.76 +31:42:40.3:  13.22 +/- 0.03  detection
Forced photometry reference-image weighted average:  13.17 +/- 0.02
Forced photometry filter REJECTED candidate at 14:20:18.76 +31:42:40.3: ref_mag=13.17 +/- 0.02 new_mean_mag=13.1329 delta=0.03 (need > 0.90)
make_report_in_HTML.sh Phase 1 (network queries): 3s
Pre-generating preview images in parallel...
Done pre-generating preview images.
Pre-generating finding charts in parallel...
Done pre-generating finding charts.
make_report_in_HTML.sh Pre-generation: 0s
  
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Considering the candidate 51545_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 51545_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 1     2026 08 19.18530    2461271.68530    12.95    14:05:43.06 +28:44:48.0   4082 3942   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Discovery image 2     2026 08 19.18601    2461271.68601    13.25    14:05:43.00 +28:44:47.5   4087 3949   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

  
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Considering the candidate 51547_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 51547_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 2     2026 08 19.18601    2461271.68601    7.90    14:28:31.60 +28:17:21.9   1033 4151   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

**** FOUND  14:28:31.58 +28:17:21.9 in the exclusion list exclusion_list_bsc.txt ****
  
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Considering the candidate 51568_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 51568_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 2     2026 08 19.18601    2461271.68601    11.85    13:41:59.88 +28:22:58.5   7241 4096   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

**** FOUND  13:41:59.89 +28:22:58.6 in the exclusion list exclusion_list.txt ****
  
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Considering the candidate 51588_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 51588_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 2     2026 08 19.18601    2461271.68601    12.55    13:42:18.80 +28:24:47.8   7198 4080   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

**** FOUND  13:42:18.77 +28:24:47.8 in the exclusion list exclusion_list.txt ****
  
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Considering the candidate 51593_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 51593_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 2     2026 08 19.18601    2461271.68601    12.68    13:40:31.35 +28:03:02.5   7449 4288   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

**** FOUND  13:40:31.34 +28:03:02.3 in the exclusion list exclusion_list_bsc.txt ****
  
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Considering the candidate 51618_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 51618_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 1     2026 08 19.18530    2461271.68530    13.13    14:20:18.77 +31:42:40.4   2206 2112   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Discovery image 2     2026 08 19.18601    2461271.68601    13.13    14:20:18.76 +31:42:40.3   2210 2119   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

  
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Considering the candidate 51635_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 51635_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 1     2026 08 19.18530    2461271.68530    13.17    13:42:09.59 +28:20:04.2   7216 4120   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Discovery image 2     2026 08 19.18601    2461271.68601    13.17    13:42:09.50 +28:20:06.5   7221 4126   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

  
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Considering the candidate 51649_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 51649_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 2     2026 08 19.18601    2461271.68601    13.26    13:42:01.30 +28:20:45.5   7239 4119   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

**** FOUND  13:42:01.22 +28:20:46.4 in the exclusion list exclusion_list.txt ****
  
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Considering the candidate 51650_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 51650_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 2     2026 08 19.18601    2461271.68601    13.28    13:46:07.60 +30:54:18.9   6630 2594   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

**** FOUND  13:46:07.58 +30:54:19.7 in the exclusion list exclusion_list.txt ****
  
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Considering the candidate 51700_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 51700_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 2     2026 08 19.18601    2461271.68601    13.94    14:11:29.82 +28:03:10.5   3314 4363   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

**** FOUND  14:11:29.84 +28:03:09.9 in the exclusion list exclusion_list.txt ****
  
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Considering the candidate 05232_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139
The candidate 05232_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139 did not pass the final checks
Discovery image 3     2026 08 19.18601    2461271.68601    10.89    13:48:44.79 +33:43:32.2   6233 0897   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits

**** FOUND  13:48:44.79 +33:43:32.3 in the exclusion list exclusion_list.txt ****
make_report_in_HTML.sh Phase 2 (HTML assembly): 0s
make_report_in_HTML.sh TOTAL: 3s
Prepared the HTML report for the field CVn-03-Q2b1x1 with default.sex.telephoto_lens_vSTL
*------ done with default.sex.telephoto_lens_vSTL ------*
#### The local exclusion list is exclusion_list_local.txt ####
Source monitoring: measuring positions from /data_ssd/NMW-TexasTech/workdir/img_2026-08-18_CI_CVn-03-Q2b1x1_235917_TTUQ2b1x1_1396478_nTwjqVHa/monitoring_positions.txt
Read 18827 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 200.5974 to 219.5560 deg, Dec +24.4734 to +35.2407 deg
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19
Tycho-2 catalog search boundaries: RA 200.5974 to 219.5560 deg, Dec 24.4734 to 35.2407 deg
Loaded 4419 Tycho-2 stars within the image boundaries (VT and BT non-zero).
Relation between the catalog and instrumental magnitudes is written to calib.txt
Stars used for magnitude calibration (good matches): 3317 out of 3472 total matches.
Matched with Tycho-2 3472 out of 18827 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits via Tycho-2
util/pixel_flux_airmass_correction processing wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Observation time (mid-exposure, UTC): JD 2461271.68530 (FITS header)
Observing site: lat= +33.748292 deg  lon= -101.958319 deg east-positive (SITELAT/SITELONG FITS header keywords)
Frame center (pixel 4788.5 3194.5): RA= 210.08389 deg  Dec= +29.97948 deg
Frame center: alt= +22.040 deg  az= 288.744 deg  airmass= 2.6435
Header cross-check: CENTALT= 22.122 deg (difference -0.083 deg)
Header cross-check: AIRMASS= 2.6398 (we compute 2.6435)
Airmass zero-point fit: OK  k= +0.4321 +/- 0.0074 mag/airmass  N= 2753  airmass span 1.9180-4.3801  scatter 0.1924 mag
Source monitoring: airmass zero-point for wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits: OK +1.126603 -0.432069 2.6435 +0.4321 2753 2.4621 0.1924 1.9180 4.3801
Forced photometry (list mode): image=wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits list=monitoring_pixlist506344.tmp aperture=5.1
Image size: 9576 x 6388
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
Saturation level: 57000.0
Calibration (from calib.txt_param_monitoring, fit_function=3): cal_mag = 0.000000 * x^2 + 1.000000 * x + 22.311800
Forced photometry: center=(1937.64, 1690.79) aperture=5.1
Annulus: inner=10.20 outer=25.50
Background annulus: 1718 pixels
Iterative clipping converged after 1 iterations, 1714/1718 pixels remain
SExtractor background: mode=697.69 median=697.50 mean=697.38 sigma=45.93 -> bg=697.69 (1714 pixels)
Aperture sum=15849.13 N_eff=20.4282
Net flux=1596.65 noise=207.60 SNR=7.69
Instrumental magnitude: -8.0080
Calibrated magnitude: 14.3038
Source monitoring: airmass zero-point term applied to the measurements on wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits
Source monitoring: 1 position(s) measured on wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-26-39_20.00sec_0.00C_LIGHT_0138.fits (aperture 5.1 pix)
Read 19091 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 200.5963 to 219.5582 deg, Dec +24.5211 to +35.2553 deg
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18
Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19
Tycho-2 catalog search boundaries: RA 200.5963 to 219.5582 deg, Dec 24.5211 to 35.2553 deg
Loaded 4405 Tycho-2 stars within the image boundaries (VT and BT non-zero).
Relation between the catalog and instrumental magnitudes is written to calib.txt
Stars used for magnitude calibration (good matches): 3317 out of 3471 total matches.
Matched with Tycho-2 3471 out of 19091 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits via Tycho-2
util/pixel_flux_airmass_correction processing wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Observation time (mid-exposure, UTC): JD 2461271.68601 (FITS header)
Observing site: lat= +33.748292 deg  lon= -101.958319 deg east-positive (SITELAT/SITELONG FITS header keywords)
Frame center (pixel 4788.5 3194.5): RA= 210.09219 deg  Dec= +29.99059 deg
Frame center: alt= +21.853 deg  az= 288.846 deg  airmass= 2.6645
Header cross-check: CENTALT= 21.923 deg (difference -0.069 deg)
Header cross-check: AIRMASS= 2.6623 (we compute 2.6645)
Airmass zero-point fit: OK  k= +0.4270 +/- 0.0072 mag/airmass  N= 2803  airmass span 1.9288-4.4343  scatter 0.1931 mag
Source monitoring: airmass zero-point for wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits: OK +1.125803 -0.427031 2.6645 +0.4270 2803 2.5055 0.1931 1.9288 4.4343
Forced photometry (list mode): image=wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits list=monitoring_pixlist506344.tmp aperture=5.1
Image size: 9576 x 6388
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
Saturation level: 57000.0
Calibration (from calib.txt_param_monitoring, fit_function=3): cal_mag = 0.000000 * x^2 + 1.000000 * x + 22.305100
Forced photometry: center=(1941.93, 1697.92) aperture=5.1
Annulus: inner=10.20 outer=25.50
Background annulus: 1712 pixels
Iterative clipping converged after 2 iterations, 1706/1712 pixels remain
SExtractor background: mode=694.39 median=696.00 mean=697.07 sigma=44.28 -> bg=694.39 (1706 pixels)
Aperture sum=15716.39 N_eff=20.4282
Net flux=1531.28 noise=200.13 SNR=7.65
Instrumental magnitude: -7.9626
Calibrated magnitude: 14.3425
Source monitoring: airmass zero-point term applied to the measurements on wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits
Source monitoring: 1 position(s) measured on wcs_fd_CVn-03-Q2b1x1_2026-08-18_23-27-41_20.00sec_0.00C_LIGHT_0139.fits (aperture 5.1 pix)
########### Completed CVn-03-Q2b1x1 ###########
The analysis was running at tau
We are allowed to update the exclusion list at tau host
Found ../exclusion_list_TTUQ2.txt
#### The exclusion list before filtering-out asteroids, bad pixels and adding Gaia sources ####
###################################################################################
renamed 'exclusion_list_index_html.txt_noasteroids' -> 'exclusion_list_index_html.txt'
renamed 'exclusion_list_index_html.txt_nohotpixels' -> 'exclusion_list_index_html.txt'
# Count candidates with no identification (that also don't look like hot pix)
Found 0 unidentified candidates (excluding asteroids, hot pixels and known variable stars).
###################################################################################
0 candidates found (excluding asteroids and hot pixels)
This does not look like a test run
###################################################################################
exclusion_list_gaiadr2.txt NOT FOUND
exclusion_list_apass.txt NOT FOUND
IS_THIS_TEST_RUN=NO  ALLOW_EXCLUSION_LIST_UPDATE= YES
#### Nothing to add to the exclusion list ####
The observatory MPC code is V36
############################################################
Positions of planets computed with util/planet_finder/main.py for JD(UT)2461271.68529925 -observatory V36
09:19:47.42 +17:08:34.5 Mercury (-1.5mag)
12:40:00.41 -06:18:26.8 Venus (-4.5mag)
06:20:51.82 +23:41:39.4 Mars (1.3mag)
08:52:43.05 +18:04:01.3 Jupiter (-1.8mag)
00:55:16.84 +03:05:14.0 Saturn (0.5mag)
04:12:48.14 +20:59:43.0 Uranus (5.7mag)
00:15:22.51 +00:07:58.0 Neptune (7.7mag)
20:27:07.39 -23:34:09.3 Pluto (14.5mag)
14:42:31.54 -21:55:49.7 Moon (-10.1mag)
-rw-r--r-- 1 apache apache 363 Aug 19 00:46 planets.txt
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT)2461271.68529925:
08:52:39.43 +18:04:18.1 Io (6.1mag)
08:52:53.95 +18:03:12.2 Europa (6.3mag)
08:52:28.68 +18:05:08.2 Ganymede (5.6mag)
08:52:19.84 +18:05:45.4 Callisto (6.8mag)
08:50:10.86 +18:10:07.0 Himalia (15.7mag)
08:52:42.78 +18:04:02.8 Thebe (16.6mag)
08:49:48.99 +18:06:32.6 Elara (17.7mag)
08:56:51.52 +17:38:35.2 Pasiphae (17.9mag)
08:55:09.38 +18:16:49.4 Carme (19.0mag)
00:55:26.95 +03:05:18.1 Titan (8.4mag)
00:55:13.69 +03:05:21.5 Rhea (9.7mag)
00:55:49.70 +03:06:19.0 Iapetus (11.1mag)
00:55:32.52 +03:05:01.9 Hyperion (14.4mag)
00:54:25.48 +02:57:01.9 Phoebe (16.4mag)
-rw-r--r-- 1 apache apache 568 Aug 19 00:46 moons.txt
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT)2461271.68529925:
19:54:34.69 -16:27:34.3 JWST
16:38:20.13 +46:54:56.0 Chandra
22:40:16.70 +58:20:57.3 XMM-Newton
-rw-r--r-- 1 apache apache 96 Aug 19 00:46 spacecraft.txt
############################################################
Positions of bright comets computed with util/comet_finder/main.py for JD(UT)2461271.68529925 -observatory V36
03:25:15.83 +18:13:28.1 17.5mag P/1996 R2 (Lagerkvist)
17:59:57.21 -34:31:12.1 14.1mag P/2010 H2 (Vales)
07:03:44.28 -69:20:47.2 17.3mag C/2014 UN271 (Bernardinelli-Bernstein)
06:12:28.68 +33:14:02.9 17.7mag C/2017 K2 (PANSTARRS)
04:13:32.11 +41:33:46.2 17.3mag P/2021 N1 (ZTF)
22:29:25.74 +30:39:24.9 17.3mag C/2022 E2 (ATLAS)
06:54:01.44 +26:20:35.8 16.8mag C/2022 N2 (PANSTARRS)
10:31:45.14 +27:59:12.2 17.0mag C/2022 QE78 (ATLAS)
09:36:11.77 +05:18:22.3 18.0mag C/2022 R6 (PANSTARRS)
15:14:47.86 -12:44:17.1 18.0mag P/2023 B1 (PANSTARRS)
20:57:00.69 +64:34:22.7 17.9mag C/2023 H5 (Lemmon)
15:38:33.26 -13:56:46.8 14.5mag C/2023 R1 (PANSTARRS)
08:19:59.46 +31:51:22.8 15.5mag C/2024 E1 (Wierzchos)
15:05:48.37 +15:32:08.0 17.8mag C/2024 G6 (ATLAS)
18:50:11.40 +43:27:58.4 13.7mag C/2024 J3 (ATLAS)
20:54:13.61 +49:39:02.2 17.5mag C/2024 R4 (PANSTARRS)
05:23:31.04 -12:53:52.5 15.3mag C/2024 T5 (ATLAS)
07:02:53.40 +22:11:29.0 17.9mag C/2025 J1 (Borisov)
10:48:34.01 +20:10:49.2 17.1mag C/2025 V2 (Rankin)
13:05:10.63 +01:35:15.2 16.9mag C/2025 Y1 (ATLAS)
16:07:03.95 +76:40:18.5 16.6mag C/2026 A2 (Bok)
03:09:52.65 +46:20:12.6 17.2mag C/2026 B2 (Sun-Gao)
11:56:04.52 +09:38:18.6 17.4mag A/2026 E1
22:09:30.70 -31:22:04.9 7.1mag 10P/Tempel
11:35:42.25 -04:06:18.1 16.3mag 29P/Schwassmann-Wachmann
11:29:59.06 +01:03:23.3 17.4mag 63P/Wild
00:52:31.48 -05:56:02.3 15.4mag 65P/Gunn
05:59:56.65 +20:22:57.7 13.7mag 78P/Gehrels
20:28:21.17 -24:42:11.8 17.5mag 84P/Giclas
03:09:58.79 +14:23:01.8 16.9mag 88P/Howell
08:23:01.41 +26:04:40.8 16.4mag 93P/Lovas
04:38:01.23 +21:09:45.4 17.3mag 112P/Urata-Niijima
06:32:22.53 +28:50:31.9 16.1mag 114P/Wiseman-Skiff
09:44:17.16 +24:41:45.3 14.9mag 123P/West-Hartley
12:05:56.64 -14:25:34.5 17.2mag 124P/Mrkos
05:52:21.35 +21:04:49.7 16.0mag 128P/Shoemaker-Holt
06:46:50.57 +18:18:01.9 17.9mag 131P/Mueller
00:00:43.70 +03:12:01.0 17.5mag 139P/Vaisala-Oterma
03:13:14.71 -18:44:53.3 13.1mag 161P/Hartley-IRAS
07:53:15.40 +38:07:20.9 16.0mag 162P/Siding Spring
11:44:10.15 +34:26:20.0 12.0mag 169P/NEAT
03:01:30.26 +09:28:50.8 17.6mag 220P/McNaught
16:48:22.79 -10:54:14.2 18.0mag 235P/LINEAR
20:17:02.02 -52:10:38.9 17.9mag 259P/Garradd
03:54:05.10 +29:37:10.7 15.3mag 260P/McNaught
07:38:03.32 +37:17:01.3 17.3mag 295P/LINEAR
15:14:42.13 +01:54:50.1 17.8mag 391P/Kowalski
09:10:51.33 +17:49:45.2 17.9mag 450P/LONEOS
-rw-r--r-- 1 apache apache 2.3K Aug 19 00:46 comets.txt
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
21:28:47.85 +20:31:03.60  SN 2026sfn  2026-08-16.3 17.09
23:01:28.67 -61:00:39.00  SN 2026yib  2026-08-14.85 17.36
00:22:23.20 -32:16:02.70  SN 2026whu  2026-08-14.96 16.5
19:56:21.71 -37:24:19.90  ASASSN-26ew  2026-08-13.82 14.73
13:53:14.21 +00:26:52.00  SN 2026wkv  2026-08-10.12 15.83
05:21:07.61 +23:38:20.10  TCP J05210763+2338194  2026-08-10.59 9.34
01:28:20.49 +40:13:27.10  SN2026wpd  2026-08-9.34 16.37
23:47:50.87 +49:28:49.80  SN2026wjs  2026-08-9.35 17.12
16:03:20.92 +17:43:23.70  AT2026xau  2026-08-9.3 17.71
01:10:22.05 -09:34:08.50  SN2026weo  2026-08-7.46 15.76
00:56:54.35 -35:55:29.40  AT2026wdy  2026-08-5.05 16.08
22:08:07.63 -53:03:58.90  AT2026wek  2026-08-3.82 17.17
14:51:51.34 +66:13:24.60  ASASSN-26ev  2026-08-2.15 14.02
12:06:50.79 -36:16:06.20  SN2026wgm  2026-08-1.73 15.61
16:56:36.90 -59:29:26.00  ASASSN-26er  2026-07-25.82 15.09
01:21:27.83 -10:37:05.00  SN2026vbh  2026-07-25.61 15.97
21:17:31.59 +22:25:50.90  ASASSN-26eq  2026-07-24.37 15.13
18:53:36.89 +16:56:43.60  ASASSN-26ep  2026-07-23.47 -4.06
12:18:47.98 -30:48:47.50  ASASSN-26et  2026-07-22.76 13.98
13:00:47.82 +15:42:17.60  SN2026uwk  2026-07-21.75 16.38
18:52:31.11 -32:28:00.90  ASASSN-26en  2026-07-21.77 14.63
14:42:58.01 -62:32:59.10  ASASSN-26es  2026-07-20.79 15.36
20:12:45.57 -32:53:13.00  ASASSN-26em  2026-07-20.94 16.83
18:54:24.33 -46:11:51.70  ASASSN-26eu  2026-07-20.93 14.86
03:18:56.99 -80:55:10.40  AT2026ugi  2026-07-20.03 17.12
18:43:58.40 +24:22:41.80  ASASSN-26eo  2026-07-19.36 16.16
04:50:01.03 -02:22:33.80  ASASSN-26ej  2026-07-16.17 17.02
18:34:55.28 -31:41:00.90  ASASSN-26ek  2026-07-16.24 15.73
17:07:43.61 -44:21:53.50  ASASSN-26el  2026-07-15.86 16.01
14:45:08.35 +24:13:12.30  ASASSN-26ei  2026-07-16.17 16.46
10:00:46.44 -32:36:31.10  AT 2023mhb  2026-07-14.73 16.67
14:39:37.45 -11:22:36.20  AT 2026unl  2026-07-15.27 17.11
10:49:42.57 -11:25:55.80  ASASSN-26eh  2026-07-14.72 16.58
19:33:53.06 -07:15:00.80  ASASSN-22le  2026-07-14.15 15.5
02:45:40.52 -27:55:30.30  ASASSN-26ef  2026-07-12.35 15.86
23:26:43.80 +04:42:39.70  SN 2026qtn  2026-07-12.22 16.47
02:19:17.26 +28:57:15.40  ASASSN-26ec  2026-07-11.53 2.78
18:31:15.56 -05:34:31.50  AT2026stb  2026-07-11.28 -1.29
13:36:08.24 +23:29:05.00  AT2026pjf  2026-07-10.18 -0.72
17:33:39.82 +04:22:36.70  SN2026pir  2026-07-9.86 -0.66
11:21:41.26 -50:33:36.30  ASASSN-26ed  2026-07-8.8 -1.3
23:41:42.11 +26:29:49.10  AT2026qil  2026-07-9.3 16.15
20:21:30.50 -32:03:40.10  ASASSN-26ee  2026-07-7.22 15.53
19:37:44.09 -05:35:42.80  AT2026ryu  2026-07-7.17 14.88
11:06:55.46 -04:07:04.50  AT2026qqg  2026-07-5.01 16.82
19:07:23.69 -74:13:37.30  AT2026qly  2026-07-5.02 17.31
17:57:43.80 +27:18:40.10  ASASSN-26ea  2026-07-5.07 16.67
19:59:01.43 -32:07:34.30  ASASSN-26eb  2026-07-4.97 15.52
18:46:50.35 -57:44:13.20  SN 2026qqp  2026-07-5.03 -0.92
19:17:31.69 -39:55:29.90  ASASSN-26dz  2026-07-5.14 15.91
19:14:31.37 +12:03:52.90  AT 2026rdg  2026-07-3.43 11.81
04:05:50.09 -70:24:34.40  AT 2026qpr  2026-06-30.4 15.96
13:45:37.49 -05:59:35.80  SN 2026pub  2026-06-30.09 16.01
16:41:15.63 +39:17:14.70  SN 2026pel  2026-06-26.38 16.07
10:14:40.19 -35:38:21.30  ASASSN-26dy  2026-06-25.99 15.63
14:47:21.56 -40:15:51.30  ASASSN-26dv  2026-06-23.03 14.62
13:38:49.79 -77:21:06.70  ASASSN-26dw  2026-06-23.04 16.09
00:59:27.90 +33:08:13.20  SN 2026mke  2026-06-22.39 17.13
11:10:44.73 -30:20:45.50  SN 2026nmv  2026-06-22.06 16.56
21:36:15.68 -21:19:12.50  AT2026oxh  2026-06-22.15 17.14
17:31:38.38 -56:05:51.90  ASASSN-26dx  2026-06-22.02 14.72
14:10:13.44 -38:46:46.10  AT2026pvk  2026-06-22.06 16.53
20:56:47.23 -18:31:05.20  AT2026plb  2026-06-21.31 16.4
15:44:29.68 +21:00:59.30  SN2026ore  2026-06-21.29 17.57
23:50:05.98 -14:01:41.30  AT2026oxl  2026-06-21.52 17.64
17:36:54.73 -18:10:04.20  AT2026ouj  2026-06-20.92 15.15
00:34:04.08 -30:22:09.20  AT2026ntk  2026-06-18.09 17.34
20:49:13.39 +25:17:59.20  ASASSN-26du  2026-06-15.39 15.93
23:09:30.84 +32:40:42.00  SN2026oxc  2026-06-14.35 16.83
02:02:26.67 +32:04:22.70  AT2026ovz  2026-06-14.6 15.52
21:26:28.11 -72:31:19.50  AT2026nwc  2026-06-11 17.05
17:54:57.33 +26:32:34.20  SN 2026odc  2026-06-11.23 17.62
13:55:59.94 +17:30:37.20  SN 2026nyq  2026-06-11.1 16.24
00:50:45.14 -71:38:36.90  ASASSN-26dt  2026-06-11.13 10.22
14:42:19.73 +19:11:35.60  SN2026nyp  2026-06-10.3 16.32
12:23:23.92 +12:56:43.50  SN2026mta  2026-06-8.29 16.69
12:30:18.51 +47:12:33.20  SN2026oao  2026-06-9.32 17.02
10:51:05.21 -42:28:56.60  AT2026nvf  2026-06-8.12 16.75
13:50:22.48 -07:35:00.00  SN2026npn  2026-06-8.02 17.58
00:56:07.17 +43:01:43.20  ASASSN-26dq  2026-06-7.43 13.58
01:07:49.46 +41:59:43.70  SN 2026obc  2026-06-7.43 15.15
21:11:25.22 +14:14:31.90  ASASSN-26dr  2026-06-7.24 16.24
06:21:27.06 -65:16:42.00  ASASSN-26ds  2026-06-2.97 15.02
20:07:38.15 -21:07:05.40  SN2026mho  2026-05-25.18 -1.12
11:29:42.55 +79:01:03.10  AT2026min  2026-05-24.21 16.63
11:44:33.11 -68:48:32.90  ASASSN-26no  2026-05-24.03 8.35
19:00:42.82 -48:31:01.60  ASASSN-26dp  2026-05-22.31 -3.28
14:23:56.72 -58:37:47.60  ASASSN-26dn  2026-05-20.01 14.64
11:24:54.06 +47:57:01.60  AT2026nma  2026-05-20.29 15.46
21:27:08.58 +33:24:38.10  AT2026lli  2026-05-19.34 15.86
00:31:01.41 -13:38:51.70  AT2026nad  2026-05-19.39 15.34
15:16:06.61 -79:16:32.40  ASASSN-26dm  2026-05-19.03 14.44
11:24:25.21 -59:23:19.10  ASASSN-26dl  2026-05-18.02 13.55
13:45:51.52 -53:16:01.00  ASASSN-26dk  2026-05-18.16 12.96
02:05:49.69 -30:29:09.60  ASASSN-26dh  2026-05-18.43 15.37
17:50:22.87 -39:42:33.90  ASASSN-26dj  2026-05-17.05 15.7
01:13:11.60 -33:25:16.10  ASASSN-26dg  2026-05-13.41 16.8
16:44:31.77 -27:15:18.40  AT2026mhn  2026-05-12.33 15.8
09:46:31.08 -33:41:51.00  ASASSN-26di  2026-05-12.14 14.63
21:23:11.57 -19:09:45.00  AT2026kwu  2026-05-12.26 16.9
-rw-r--r-- 1 apache apache 5.7K Aug 19 00:46 asassn_transients_list.txt
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
19:51:21.42 +37:06:40.0  TCP J19512142+3706400  2026-06-17.2942  16.8mag
19:57:03.87 +37:41:46.4  TCP J19570387+3741464  2026-06-18.2638  17.5mag
00:42:32.04 +41:10:28.3  PNV J00423204+4110283  2026-06-26.059  16.6mag
02:19:17.36 +28:57:15.8  TCP J02191736+2857158  2026-07-12.3549  12.5mag
00:44:56.43 +41:57:41.6  PNV J00445643+4157416  2026-07-13.8026  17.98Cmag
00:42:55.36 +41:17:27.0  PNV J00425536+4117270  2026-07-20.1813  17.7mag
20:35:43.64 +61:31:32.9  TCP J20354364+6131329  2026-07-20.5443  14.4mag
21:17:31.48 +22:25:51.0  TCP J21173148+2225510  2026-07-23.5577  14.8mag
00:41:24.04 +40:49:02.8  PNV J00412404+4049028  2026-07-25.0157  18.7mag
00:43:04.26 +41:02:28.6  PNV J00430426+4102286  2026-07-26.1512  20mag
14:51:51.40 +66:13:24.0  TCP J14515140+6613240  2026-07-29.2561  13.5mag
00:43:06.15 +41:22:08.2  PNV J00430615+4122082  2026-07-30.0085  19.4mag
00:41:33.23 +41:10:12.2  PNV J00413323+4110122  2026-08-02.8913  17.1mag
05:21:07.63 +23:38:19.4  TCP J05210763+2338194  2026-08-06.4109  11.2mag
22:57:17.96 +47:07:41.8  TCP J22571796+4707418  2026-08-09.3289  14.3mag
09:13:38.17 +76:28:18.1  PSN J09133817+7628181  2026-08-09.8037  15.4mag
00:43:17.29 +41:26:48.6  PNV J00431729+4126486  2026-08-14.0920  16.8mag
00:42:52.82 +41:10:58.6  PNV J00425282+4110586  2026-08-17.7723  19.9mag
00:42:52.83 +41:10:59.6  PNV J00425283+4110596  2026-08-18.6119  19.3mag
18:25:12.76 -22:25:29.3  TCP J18251276-2225293  2026-08-19.1062  9.4mag
-rw-r--r-- 1 apache apache 190K Aug 19 00:46 tocp_transients_list.txt
############################################################
Truncated list of recent TNS transients from https://www.wis-tns.org/ :
14:35:58.114 +53:44:16.90  AT 2026xai  2026-08-02.20 20.1016
18:19:05.698 +53:11:07.41  AT 2026xah  2026-08-02.19 20.0688
20:55:20.373 -00:21:55.35  AT 2026xag  2026-08-03.47 20.94
14:15:21.615 +05:15:37.35  AT 2026xaf  2026-08-03.30 20.31
14:14:04.946 +13:34:28.62  AT 2026xae  2026-08-03.27 20.15
21:25:11.950 -47:08:43.45  AT 2026xad  2026-06-19.54 20.42
00:02:18.948 +29:04:39.95  AT 2026xac  2026-07-29.51 19.76
21:35:48.554 -26:40:57.79  AT 2026xab  2026-06-16.55 20.65
20:00:04.333 -34:58:06.08  AT 2026xaa  2026-06-16.49 20.62
14:56:06.142 +19:59:52.91  AT 2026wzz  2026-04-20.54 21.17
15:43:22.735 -12:32:40.12  AT 2026wzy  2026-01-29.65 20.48
13:01:31.563 -05:17:30.42  AT 2026wzx  2026-01-20.63 21.3
09:35:39.129 +00:09:39.43  AT 2026wzw  2026-02-14.42 20.88
12:44:03.003 +34:52:48.24  AT 2026wzv  2026-06-15.27 20.69
23:42:29.807 -07:26:38.21  AT 2026wzu  2026-07-25.58 21.31
00:32:59.618 -20:06:29.77  AT 2026wzt  2026-07-20.58 20.4
15:05:16.769 +01:50:59.23  AT 2026wzs  2026-05-14.37 21.11
12:05:52.531 -28:18:31.37  AT 2026wzr  2026-04-21.37 20.31
03:21:56.606 -28:39:02.78  AT 2026wzq  2026-01-09.24 20.45
14:13:05.294 -07:19:09.39  AT 2026wzp  2026-06-19.28 20.92
-rw-r--r-- 1 apache apache 87K Aug 19 00:46 tns_transients_list.txt

=== Transient Factory Profiling ===
Started: Wed Aug 19 00:44:57 CDT 2026
=======================================
TIMING SExtractor: 3 seconds
TIMING matching_and_photometry: 1 seconds
TIMING lightcurve_write: 1 seconds
TIMING select_aperture: 3 seconds
    VAST_RUN_default.sex.telephoto_lens_onlybrightstars_v1: 11s (0.18 min)
    WCS_CACHE_SETUP: 0s (0.00 min)
    WCS_CALIBRATION_AND_EPHEMERIS: 50s (0.83 min)
    PLATE_VERIFY_AND_POINTING: 0s (0.00 min)
    UCAC5_PLATE_SOLVING: 1s (0.02 min)
    MAGNITUDE_CALIBRATION: 13s (0.22 min)
    MAGCAL_SANITY_CHECK: 0s (0.00 min)
      FILTER_MAGNITUDE_CONSOLIDATED: 0s (0.00 min)
      FILTER_FRAME_EDGE: 0s (0.00 min)
      FILTER_SECOND_EPOCH_VERIFY: 0s (0.00 min)
    CANDIDATE_FILTERING_TOTAL: 0s (0.00 min)
    EXCLUSION_LIST_PREPARATION: 0s (0.00 min)
    SEEING_AND_LIMITING_MAG: 2s (0.03 min)
    WAIT_FOR_UCAC5: 5s (0.08 min)
    WCS_IMAGE_ARCHIVING: 0s (0.00 min)
    HTML_REPORT: 4s (0.07 min)
  SE_CONFIG_default.sex.telephoto_lens_onlybrightstars_v1: 86s (1.43 min)
TIMING SExtractor: 10 seconds
TIMING matching_and_photometry: 4 seconds
TIMING lightcurve_write: 4 seconds
TIMING select_aperture: 13 seconds
    VAST_RUN_default.sex.telephoto_lens_vSTL: 36s (0.60 min)
    WCS_CACHE_SETUP: 1s (0.02 min)
    WCS_CALIBRATION_AND_EPHEMERIS: 1s (0.02 min)
    PLATE_VERIFY_AND_POINTING: 1s (0.02 min)
    UCAC5_PLATE_SOLVING: 0s (0.00 min)
    MAGNITUDE_CALIBRATION: 19s (0.32 min)
    MAGCAL_SANITY_CHECK: 0s (0.00 min)
      FILTER_MAGNITUDE_CONSOLIDATED: 1s (0.02 min)
      FILTER_FRAME_EDGE: 0s (0.00 min)
      FILTER_SECOND_EPOCH_VERIFY: 0s (0.00 min)
    CANDIDATE_FILTERING_TOTAL: 1s (0.02 min)
    EXCLUSION_LIST_PREPARATION: 0s (0.00 min)
    SEEING_AND_LIMITING_MAG: 1s (0.02 min)
    WAIT_FOR_UCAC5: 0s (0.00 min)
    WCS_IMAGE_ARCHIVING: 0s (0.00 min)
    HTML_REPORT: 3s (0.05 min)
  SE_CONFIG_default.sex.telephoto_lens_vSTL: 63s (1.05 min)
FIELD_CVn-03-Q2b1x1: 227s (3.78 min)
=======================================
TOTAL_RUNTIME: 243s (4.05 min)
Finished: Wed Aug 19 00:49:00 CDT 2026