FITS images used in this processing run:

Field CVn-02-Q2b1x1 reference image: CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
Field CVn-02-Q2b1x1 reference image: CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
Field CVn-02-Q2b1x1 second-epoch image: CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
Field CVn-02-Q2b1x1 second-epoch image: CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits

## VaST run with SExtractor config file default.sex.telephoto_lens_onlybrightstars_v1 ##
Images processed 4
Images used for photometry 4
Ref.  image: 2461178.74973063 18.05.2026 05:59:26.726   /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
First image: 2461178.74973063 18.05.2026 05:59:26.726   /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
Last  image: 2461271.68053684 19.08.2026 04:19:48.383   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
JD time system (TT/UTC/UNKNOWN): UTC
Transient candidates found: 0
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.30
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: 2 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):  3913
Objects passed selection criteria:  3904
Measurements per detected object (mean, median, min, max):    3.3    4.0    2    4
Measurements per selected object (mean, median, min, max):    3.3    4.0    2    4
Average stars detected per image: 3288.75
Average stars matched: 3237.75 (98.4493 %)
Memory usage VmPeak:   231024 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 00:14:22 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: 2461178.74973063 18.05.2026 05:59:26.726   /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
First image: 2461178.74973063 18.05.2026 05:59:26.726   /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
Last  image: 2461271.68053684 19.08.2026 04:19:48.383   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
JD time system (TT/UTC/UNKNOWN): UTC
Transient candidates found: 8
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.04
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: 12 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):  19317
Objects passed selection criteria:  19270
Measurements per detected object (mean, median, min, max):    3.3    4.0    2    4
Measurements per selected object (mean, median, min, max):    3.3    4.0    2    4
Average stars detected per image: 17002
Average stars matched: 16379 (96.3357 %)
Memory usage VmPeak:   245464 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 00:15:15 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-02-Q2b1x1
#######################################
########### Starting CVn-02-Q2b1x1 ###########
Processing CVn-02-Q2b1x1
server tau has sufficient free disk space available: 203129 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 203129 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.png' -> 'transient_report/CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits_preview.png'

CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits


renamed 'CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.png' -> 'transient_report/CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits_preview.png'

CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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= 349.3568
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 399.7563
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1381.3235
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 419.4665
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1379.8580
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 417.2910
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 3.9539
INFO:                  SECOND_EPOCH__SD_ratio= 0.005
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 =     25.0499992370605 / [degC] Focuser temperature
AMBTEMP =                 31.2 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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= '2026-08-18T23:18:49.6516910' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-19T04:18:49.6516910' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61271.1797413309 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-19T04:18:59.5477640' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61271.1798558682 / 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      =     196.362771950719 / [deg] RA of telescope" status=0
Record 32: "DEC     =     37.9999883910365 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     17.3738888888889 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     304.357777777778 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.31516325579527 / 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-02'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '13 05 27'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+38 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 =     25.0499992370605 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     25.0499992370605 / [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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/d_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits :)

Spent 0.500359 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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/d_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                  0.0 / [degC] CCD temperature
FOCTEMP =     25.1499996185303 / [degC] Focuser temperature
AMBTEMP =                 31.2 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits 
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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= '2026-08-18T23:19:48.3839457' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-19T04:19:48.3839457' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61271.1804210995 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-19T04:19:58.2826627' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61271.1805356713 / 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      =     196.362771995576 / [deg] RA of telescope" status=0
Record 32: "DEC     =     37.9999884139772 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     17.2019444444444 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     304.460555555556 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.34654582442172 / 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-02'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '13 05 27'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+38 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 =     25.1499996185303 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     25.1499996185303 / [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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/d_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits :)

Spent 0.504152 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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/d_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
Previews of the CALIBRATED second-epoch images:


fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits



fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
  
SExtractor catalog cache: saved CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.cat to cache
SExtractor catalog cache: saved CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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: 2461271.67985707
Re-using ../asassn_transients_list.txt
'../asassn_transients_list.txt' -> 'asassn_transients_list.txt'
Re-using ../tns_transients_list.txt
'../tns_transients_list.txt' -> 'tns_transients_list.txt'
Plate-solving the images
'tocp_transients_list.txt' -> '../tocp_transients_list.txt'
wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits exists and is non-empty
wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits exists and is non-empty
wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits exists and is non-empty
wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits exists and is non-empty
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits (1st reference image)
verification OK: wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
Image size: 937.2'x624.0'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.86"/pix along the Y axis
Image center: 13:05:27.532 +38:00:11.66 J2000 4789.000 3195.000 
###################################
The image scale is 5.87"/pix, setting the soft and hard astrometric limits for filtering second-epoch detections: 5.9" and 8.8"
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits (1st new image)
verification OK: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
Image size: 938.4'x624.1'  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: 13:05:26.296 +38:00:07.49 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the first second-epoch image (pointing accuracy)
Reference image center 13:05:27.532 +38:00:11.66
Second-epoch image center 13:05:26.296 +38:00:07.49
Angular distance between the image centers 0.0042 deg.
Soft limit: 0.50 deg.  Hard limit: 1.00 deg.
###################################
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits (2nd new image)
verification OK: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
Image size: 938.4'x624.1'  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: 13:05:23.104 +38:00:21.27 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the second second-epoch image (pointing accuracy)
Reference image center 13:05:27.532 +38:00:11.66
Second-epoch image center 13:05:23.104 +38:00:21.27
Angular distance between the image centers 0.0148 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  13:05:26.296 +38:00:07.49
Second-epoch second image center 13:05:23.104 +38:00:21.27
Angular distance between the image centers 0.01116 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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits &> /tmp/tmp.gBNkgW2XWS
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits &> /tmp/tmp.GnSu9yOisL
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits &> /tmp/tmp.wPGVfYx0YT
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits &> /tmp/tmp.zqOIz7CW3Q
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
Calibrating the magnitude scale
Found non-empty wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits and wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits and wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat 
Found non-empty wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits and wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat
The reference image (wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits) and catalog (wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat) found
'wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat' -> 'wcsmag.cat'
Read 5327 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 185.7883 to 206.9331 deg, Dec +32.4372 to +43.2598 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 185.7883 to 206.9331 deg, Dec 32.4372 to 43.2598 deg
Loaded 4174 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): 3152 out of 3224 total matches.
Matched with Tycho-2 3224 out of 5327 detected stars.
The calibration function type and coefficients are written to calib.txt_param
util/calibrate_magnitude_scale 0.000000 1.000000 22.558150
a=0.000000 b=1.000000 c=22.558150
From vast_summary.log: estimated ref. image limiting mag.:  -7.30
Updating vast_summary.log: Estimated ref. image limiting mag.:  15.26

Updated vast_limiting_magnitude.log with calibrated magnitudes
Working...
Please, PLEASE, be patient!!!
All lightcurves processed!  =)
Estimated ref. image limiting mag.:  15.26

Lightcurve magnitude calibration plot:


Preparing per-reference-image forced-photometry calibration (method=tycho2 band=V)
Read 5327 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 185.7883 to 206.9331 deg, Dec +32.4372 to +43.2598 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 185.7883 to 206.9331 deg, Dec 32.4372 to 43.2598 deg
Loaded 4174 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): 3152 out of 3224 total matches.
Matched with Tycho-2 3224 out of 5327 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00001.cat.aperture for wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
Forced-photometry filter: calibrated wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits -> calib.txt_param_ref_wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits (aperture=6.3)
Read 5334 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 185.7738 to 206.9331 deg, Dec +32.4372 to +43.2371 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 185.7738 to 206.9331 deg, Dec 32.4372 to 43.2371 deg
Loaded 4175 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): 3147 out of 3225 total matches.
Matched with Tycho-2 3225 out of 5334 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00002.cat.aperture for wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
Forced-photometry filter: calibrated wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits -> calib.txt_param_ref_wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits (aperture=6.3)
____ End of magnitude calibration ____
Applying consolidated magnitude filters...
Preparing the exclusion lists for this field
Done with filtering
Found 0 candidate transients before the final filtering.  (Hard limit: 10000)
Median FWHM seeing for isolated stars:
 2.3 pix  CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
 2.3 pix  CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
 2.4 pix  fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
 2.4 pix  fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
Limiting magnitude estimates:
 15.3 mag.  CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
 15.3 mag.  CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
 14.4 mag.  fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
 14.4 mag.  fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
All-image limiting magnitude estimate:  14.4 (SNR )  11.6 (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
cp: cannot create regular file 'local_wcs_cache/': Not a directory
############ /tmp/tmp.gBNkgW2XWS (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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits 571.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits' -> 'wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
WCS_IMAGE_NAME=wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
WCS-calibrated image found: wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
Checking if the catalog wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat corresponding to the image wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits alredy exist and is non-empty...
Catalog wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat corresponding to the image wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
WCS catalog name: wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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=282, bad_region=1231, passed=5327
Got 5327 stars (including 3873 good ones) from the SExtractor catalog wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat 
util/solve_plate_with_UCAC5 got 5327 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 612 to 668 (Dec 32.4 to 43.3)
Done reading UCAC5 zone files...
Matched 3754 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 3746 matched stars entering correct_measured_positions(), 3746 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.25" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 3746 matched stars entering correct_measured_positions(), 4334 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.25" 

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 612 to 668 (Dec 32.4 to 43.3)
Done reading UCAC5 zone files...
Matched 3754 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 3746 matched stars entering correct_measured_positions(), 4334 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.27" 
Accuracy estimation diagnostic: 3746 matched stars entering correct_measured_positions(), 4334 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.27" 
Excluding outliers - 3746 stars left (next iteration limit 4120)
Stop iterations.


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

SIP_REFIT: util/identify.sh trusts the WCS of wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits N_match=3746 sigma_overall_arcsec=0.284 sigma_q1_arcsec=0.252 sigma_q2_arcsec=0.296 sigma_q3_arcsec=0.297 sigma_q4_arcsec=0.310 n_q1=1190 n_q2=731 n_q3=1180 n_q4=645 worst_quadrant_to_overall_ratio=1.091
The image catalog is written to wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits -region wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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.GnSu9yOisL (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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits 571.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.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-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits' -> 'wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.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-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
WCS_IMAGE_NAME=wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
WCS-calibrated image found: wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
Checking if the catalog wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat corresponding to the image wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits alredy exist and is non-empty...
Catalog wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat corresponding to the image wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
WCS catalog name: wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.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=279, bad_region=1242, passed=5334
Got 5334 stars (including 3860 good ones) from the SExtractor catalog wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat 
util/solve_plate_with_UCAC5 got 5334 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 612 to 668 (Dec 32.4 to 43.2)
Done reading UCAC5 zone files...
Matched 3745 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 3738 matched stars entering correct_measured_positions(), 3738 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.26" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 3738 matched stars entering correct_measured_positions(), 4344 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.27" 

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 612 to 668 (Dec 32.4 to 43.2)
Done reading UCAC5 zone files...
Matched 3745 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 3738 matched stars entering correct_measured_positions(), 4344 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.28" 
Accuracy estimation diagnostic: 3738 matched stars entering correct_measured_positions(), 4344 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 
Excluding outliers - 3738 stars left (next iteration limit 4111)
Stop iterations.


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

SIP_REFIT: util/identify.sh trusts the WCS of wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits N_match=3738 sigma_overall_arcsec=0.308 sigma_q1_arcsec=0.289 sigma_q2_arcsec=0.316 sigma_q3_arcsec=0.326 sigma_q4_arcsec=0.301 n_q1=1181 n_q2=731 n_q3=1179 n_q4=647 worst_quadrant_to_overall_ratio=1.060
The image catalog is written to wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits -region wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.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.wPGVfYx0YT (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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
WCS_IMAGE_NAME=wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
WCS-calibrated image found: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
Checking if the catalog wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat corresponding to the image wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits alredy exist and is non-empty...
Catalog wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat corresponding to the image wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
WCS catalog name: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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=190, bad_region=493, passed=3010
Got 3010 stars (including 2353 good ones) from the SExtractor catalog wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat 
util/solve_plate_with_UCAC5 got 3010 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 938.4'
Seting catalog search parameters based on the expected field of view 938.4 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013033 (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 0.010427 (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 611 to 668 (Dec 32.4 to 43.2)
Done reading UCAC5 zone files...
Matched 2289 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 2287 matched stars entering correct_measured_positions(), 2287 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.33" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 2287 matched stars entering correct_measured_positions(), 2619 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.33" 

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 611 to 668 (Dec 32.4 to 43.2)
Done reading UCAC5 zone files...
Matched 2289 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 2287 matched stars entering correct_measured_positions(), 2619 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.33" 
Accuracy estimation diagnostic: 2287 matched stars entering correct_measured_positions(), 2619 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.33" 
Excluding outliers - 2287 stars left (next iteration limit 2515)
Stop iterations.


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

SIP_REFIT: SIP order 2 trial: matched=2287 robust_rms=6.317 arcsec worst_quadrant_rms=9.381 arcsec
SIP_REFIT: SIP order 3 trial: matched=2287 robust_rms=0.411 arcsec worst_quadrant_rms=0.505 arcsec
SIP_REFIT: SIP order 5 trial: matched=2287 robust_rms=0.363 arcsec worst_quadrant_rms=0.408 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=2287 robust_rms_before=1.225 arcsec robust_rms_before_corrected=0.343 arcsec robust_rms_after=0.363 arcsec worst_quadrant_rms_before=0.399 worst_quadrant_rms_after=0.408
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.399 arcsec) - keeping the original
WCS_QUALITY_DIAG: file=fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits N_match=2287 sigma_overall_arcsec=0.344 sigma_q1_arcsec=0.337 sigma_q2_arcsec=0.387 sigma_q3_arcsec=0.338 sigma_q4_arcsec=0.359 n_q1=795 n_q2=406 n_q3=741 n_q4=345 worst_quadrant_to_overall_ratio=1.123
The image catalog is written to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits -region wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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.zqOIz7CW3Q (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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
WCS_IMAGE_NAME=wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
WCS-calibrated image found: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
Checking if the catalog wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat corresponding to the image wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits alredy exist and is non-empty...
Catalog wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat corresponding to the image wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
WCS catalog name: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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=192, bad_region=495, passed=3018
Got 3018 stars (including 2355 good ones) from the SExtractor catalog wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat 
util/solve_plate_with_UCAC5 got 3018 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 938.4'
Seting catalog search parameters based on the expected field of view 938.4 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013033 (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 0.010427 (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 611 to 668 (Dec 32.4 to 43.3)
Done reading UCAC5 zone files...
Matched 2293 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 2291 matched stars entering correct_measured_positions(), 2291 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.33" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 2291 matched stars entering correct_measured_positions(), 2625 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 611 to 668 (Dec 32.4 to 43.3)
Done reading UCAC5 zone files...
Matched 2293 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 2291 matched stars entering correct_measured_positions(), 2625 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Accuracy estimation diagnostic: 2291 matched stars entering correct_measured_positions(), 2625 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Excluding outliers - 2291 stars left (next iteration limit 2520)
Stop iterations.


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

SIP_REFIT: SIP order 2 trial: matched=2291 robust_rms=6.291 arcsec worst_quadrant_rms=8.564 arcsec
SIP_REFIT: SIP order 3 trial: matched=2291 robust_rms=0.427 arcsec worst_quadrant_rms=0.492 arcsec
SIP_REFIT: SIP order 5 trial: matched=2291 robust_rms=0.362 arcsec worst_quadrant_rms=0.418 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=2291 robust_rms_before=1.207 arcsec robust_rms_before_corrected=0.351 arcsec robust_rms_after=0.362 arcsec worst_quadrant_rms_before=0.406 worst_quadrant_rms_after=0.418
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-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits N_match=2291 sigma_overall_arcsec=0.352 sigma_q1_arcsec=0.325 sigma_q2_arcsec=0.393 sigma_q3_arcsec=0.349 sigma_q4_arcsec=0.383 n_q1=795 n_q2=410 n_q3=738 n_q4=348 worst_quadrant_to_overall_ratio=1.116
The image catalog is written to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits -region wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits to local_wcs_cache/
'wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits' -> 'local_wcs_cache/wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits'
Saving the final (post-refit) wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits to local_wcs_cache/
'wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits' -> 'local_wcs_cache/wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits'
Saving the final (post-refit) wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits to local_wcs_cache/
'wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits' -> 'local_wcs_cache/wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits'
Saving the final (post-refit) wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits to local_wcs_cache/
'wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits' -> 'local_wcs_cache/wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits'
###################################
# Pre-local-correction WCS quality summary (see WCS_QUALITY_DIAG lines above)
ref1=CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits sigma_overall=0.284 worst_q_ratio=1.091
ref2=CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits sigma_overall=0.308 worst_q_ratio=1.060
new1=fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits sigma_overall=0.344 worst_q_ratio=1.123
new2=fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits sigma_overall=0.352 worst_q_ratio=1.116
reference average sigma_overall=0.296 worst_q_ratio=1.0755
warn-on-ratio threshold: 2.0x reference
###################################

Astrometric residual vector field (catalog-matched stars):

plot_astrometric_residuals_xy.py: wrote wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576_astrometric_residuals.png (3746 matched stars from wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.26 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577_astrometric_residuals.png (3738 matched stars from wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.27 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128_astrometric_residuals.png (2287 matched stars from wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.32 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129_astrometric_residuals.png (2291 matched stars from wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.32 arcsec)


Copying WCS-calibrated images back to input directory
Saving fully-calibrated image wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits'
Saving fully-calibrated image wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits'
Preparing the HTML report for the field CVn-02-Q2b1x1 with default.sex.telephoto_lens_onlybrightstars_v1
No candidates found here
Prepared the HTML report for the field CVn-02-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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
  
SExtractor catalog cache: saved CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.cat to cache
SExtractor catalog cache: saved CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
Checking WCS cache directory local_wcs_cache
Found WCS cache directory local_wcs_cache
Creating symlink local_wcs_cache/wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
Creating symlink local_wcs_cache/wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
Creating symlink local_wcs_cache/wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
Creating symlink local_wcs_cache/wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits exists and is non-empty
wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits exists and is non-empty
wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits exists and is non-empty
wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits exists and is non-empty
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits (1st reference image)
verification OK: wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
Image size: 937.2'x624.0'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.86"/pix along the Y axis
Image center: 13:05:27.532 +38:00:11.66 J2000 4789.000 3195.000 
###################################
The image scale is 5.87"/pix, setting the soft and hard astrometric limits for filtering second-epoch detections: 5.9" and 8.8"
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits (1st new image)
verification OK: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
Image size: 938.4'x624.1'  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: 13:05:26.296 +38:00:07.49 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the first second-epoch image (pointing accuracy)
Reference image center 13:05:27.532 +38:00:11.66
Second-epoch image center 13:05:26.296 +38:00:07.49
Angular distance between the image centers 0.0042 deg.
Soft limit: 0.50 deg.  Hard limit: 1.00 deg.
###################################
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits (2nd new image)
verification OK: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
Image size: 938.4'x624.1'  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: 13:05:23.104 +38:00:21.27 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the second second-epoch image (pointing accuracy)
Reference image center 13:05:27.532 +38:00:11.66
Second-epoch image center 13:05:23.104 +38:00:21.27
Angular distance between the image centers 0.0148 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  13:05:26.296 +38:00:07.49
Second-epoch second image center 13:05:23.104 +38:00:21.27
Angular distance between the image centers 0.01116 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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits &> /tmp/tmp.lWpClS7bxz
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits &> /tmp/tmp.kghaaKQYZe
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits &> /tmp/tmp.wL4qdWiZXC
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits &> /tmp/tmp.q9UmgEAKyC
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
Calibrating the magnitude scale
Found non-empty wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits and wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits and wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat 
Found non-empty wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits and wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat
The reference image (wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits) and catalog (wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat) found
'wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat' -> 'wcsmag.cat'
Read 24753 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 185.7834 to 207.0346 deg, Dec +32.4158 to +43.2598 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 185.7834 to 207.0346 deg, Dec 32.4158 to 43.2598 deg
Loaded 4212 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): 3071 out of 3252 total matches.
Matched with Tycho-2 3252 out of 24753 detected stars.
The calibration function type and coefficients are written to calib.txt_param
util/calibrate_magnitude_scale 0.000000 1.000000 22.449700
a=0.000000 b=1.000000 c=22.449700
From vast_summary.log: estimated ref. image limiting mag.:  -7.04
Updating vast_summary.log: Estimated ref. image limiting mag.:  15.41

Updated vast_limiting_magnitude.log with calibrated magnitudes
Working...
Please, PLEASE, be patient!!!
All lightcurves processed!  =)
Estimated ref. image limiting mag.:  15.41

Lightcurve magnitude calibration plot:


Preparing per-reference-image forced-photometry calibration (method=tycho2 band=V)
Read 24753 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 185.7834 to 207.0346 deg, Dec +32.4158 to +43.2598 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 185.7834 to 207.0346 deg, Dec 32.4158 to 43.2598 deg
Loaded 4212 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): 3071 out of 3252 total matches.
Matched with Tycho-2 3252 out of 24753 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00001.cat.aperture for wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
Forced-photometry filter: calibrated wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits -> calib.txt_param_ref_wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits (aperture=5.0)
Read 25058 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 185.7738 to 206.9742 deg, Dec +32.4156 to +43.2593 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 185.7738 to 206.9742 deg, Dec 32.4156 to 43.2593 deg
Loaded 4197 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): 3077 out of 3256 total matches.
Matched with Tycho-2 3256 out of 25058 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00002.cat.aperture for wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
Forced-photometry filter: calibrated wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits -> calib.txt_param_ref_wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits (aperture=5.0)
____ End of magnitude calibration ____
Applying consolidated magnitude filters...
Preparing the exclusion lists for this field
Done with filtering
Found 6 candidate transients before the final filtering.  (Hard limit: 10000)
Median FWHM seeing for isolated stars:
 2.2 pix  CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
 2.2 pix  CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
 2.4 pix  fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
 2.4 pix  fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
Limiting magnitude estimates:
 15.4 mag.  CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
 15.4 mag.  CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
 14.6 mag.  fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
 14.6 mag.  fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
All-image limiting magnitude estimate:  14.6 (SNR )  14.0 (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.lWpClS7bxz (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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits 571.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits' -> 'wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
WCS_IMAGE_NAME=wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
WCS-calibrated image found: wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
Checking if the catalog wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat corresponding to the image wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits alredy exist and is non-empty...
Catalog wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat corresponding to the image wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits
WCS catalog name: wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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=7, blended=952, bad_region=4201, passed=24746
Got 24746 stars (including 19829 good ones) from the SExtractor catalog wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat 
util/solve_plate_with_UCAC5 got 24746 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 612 to 668 (Dec 32.4 to 43.3)
Done reading UCAC5 zone files...
Matched 4804 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4797 matched stars entering correct_measured_positions(), 4797 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.26" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4797 matched stars entering correct_measured_positions(), 21541 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.27" 

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 612 to 668 (Dec 32.4 to 43.3)
Done reading UCAC5 zone files...
Matched 4804 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4796 matched stars entering correct_measured_positions(), 21541 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.27" 
Accuracy estimation diagnostic: 4796 matched stars entering correct_measured_positions(), 21541 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 
Excluding outliers - 4796 stars left (next iteration limit 5276)
Stop iterations.


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

SIP_REFIT: wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits N_match=4796 sigma_overall_arcsec=0.303 sigma_q1_arcsec=0.271 sigma_q2_arcsec=0.311 sigma_q3_arcsec=0.310 sigma_q4_arcsec=0.330 n_q1=1548 n_q2=914 n_q3=1522 n_q4=812 worst_quadrant_to_overall_ratio=1.090
The image catalog is written to wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits -region wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.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.kghaaKQYZe (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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits 571.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.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-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits' -> 'wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.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-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
WCS_IMAGE_NAME=wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
WCS-calibrated image found: wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
Checking if the catalog wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat corresponding to the image wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits alredy exist and is non-empty...
Catalog wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat corresponding to the image wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits
WCS catalog name: wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.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=7, blended=935, bad_region=4205, passed=25051
Got 25051 stars (including 20114 good ones) from the SExtractor catalog wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat 
util/solve_plate_with_UCAC5 got 25051 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 612 to 668 (Dec 32.4 to 43.3)
Done reading UCAC5 zone files...
Matched 4804 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4796 matched stars entering correct_measured_positions(), 4796 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.28" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4796 matched stars entering correct_measured_positions(), 21832 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.28" 

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 612 to 668 (Dec 32.4 to 43.3)
Done reading UCAC5 zone files...
Matched 4804 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4796 matched stars entering correct_measured_positions(), 21832 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 
Accuracy estimation diagnostic: 4796 matched stars entering correct_measured_positions(), 21832 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.30" 
Excluding outliers - 4796 stars left (next iteration limit 5275)
Stop iterations.


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

SIP_REFIT: wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.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-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits N_match=4796 sigma_overall_arcsec=0.325 sigma_q1_arcsec=0.316 sigma_q2_arcsec=0.313 sigma_q3_arcsec=0.340 sigma_q4_arcsec=0.318 n_q1=1555 n_q2=920 n_q3=1511 n_q4=810 worst_quadrant_to_overall_ratio=1.045
The image catalog is written to wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits -region wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.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.wL4qdWiZXC (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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
WCS_IMAGE_NAME=wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
WCS-calibrated image found: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
Checking if the catalog wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat corresponding to the image wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits alredy exist and is non-empty...
Catalog wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat corresponding to the image wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
WCS catalog name: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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=698, bad_region=1795, passed=15352
Got 15352 stars (including 13037 good ones) from the SExtractor catalog wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat 
util/solve_plate_with_UCAC5 got 15352 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 938.4'
Seting catalog search parameters based on the expected field of view 938.4 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013033 (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 0.010427 (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 611 to 668 (Dec 32.4 to 43.3)
Done reading UCAC5 zone files...
Matched 4798 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4789 matched stars entering correct_measured_positions(), 4789 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.38" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4789 matched stars entering correct_measured_positions(), 14004 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.38" 

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 611 to 668 (Dec 32.4 to 43.3)
Done reading UCAC5 zone files...
Matched 4798 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4788 matched stars entering correct_measured_positions(), 14004 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.38" 
Accuracy estimation diagnostic: 4788 matched stars entering correct_measured_positions(), 14004 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.39" 
Excluding outliers - 4788 stars left (next iteration limit 5267)
Stop iterations.


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

SIP_REFIT: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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=4788 robust_rms=5.956 arcsec worst_quadrant_rms=9.545 arcsec
SIP_REFIT: SIP order 3 trial: matched=4788 robust_rms=0.466 arcsec worst_quadrant_rms=0.589 arcsec
SIP_REFIT: SIP order 5 trial: matched=4788 robust_rms=0.427 arcsec worst_quadrant_rms=0.506 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=4788 robust_rms_before=1.257 arcsec robust_rms_before_corrected=0.412 arcsec robust_rms_after=0.427 arcsec worst_quadrant_rms_before=0.470 worst_quadrant_rms_after=0.506
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.470 arcsec) - keeping the original
WCS_QUALITY_DIAG: file=fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits N_match=4788 sigma_overall_arcsec=0.406 sigma_q1_arcsec=0.398 sigma_q2_arcsec=0.452 sigma_q3_arcsec=0.391 sigma_q4_arcsec=0.433 n_q1=1674 n_q2=806 n_q3=1603 n_q4=705 worst_quadrant_to_overall_ratio=1.112
The image catalog is written to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits -region wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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.q9UmgEAKyC (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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
WCS_IMAGE_NAME=wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
WCS-calibrated image found: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
Checking if the catalog wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat corresponding to the image wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits alredy exist and is non-empty...
Catalog wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat corresponding to the image wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
WCS catalog name: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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=635, bad_region=1784, passed=15339
Got 15339 stars (including 13085 good ones) from the SExtractor catalog wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat 
util/solve_plate_with_UCAC5 got 15339 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 938.4'
Seting catalog search parameters based on the expected field of view 938.4 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013033 (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 0.010427 (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 611 to 668 (Dec 32.4 to 43.3)
Done reading UCAC5 zone files...
Matched 4799 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4786 matched stars entering correct_measured_positions(), 4786 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.38" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4786 matched stars entering correct_measured_positions(), 14018 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.38" 

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 611 to 668 (Dec 32.4 to 43.3)
Done reading UCAC5 zone files...
Matched 4799 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4787 matched stars entering correct_measured_positions(), 14018 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.38" 
Accuracy estimation diagnostic: 4787 matched stars entering correct_measured_positions(), 14018 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.39" 
Excluding outliers - 4787 stars left (next iteration limit 5264)
Stop iterations.


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

SIP_REFIT: wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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=4787 robust_rms=6.000 arcsec worst_quadrant_rms=9.279 arcsec
SIP_REFIT: SIP order 3 trial: matched=4787 robust_rms=0.488 arcsec worst_quadrant_rms=0.558 arcsec
SIP_REFIT: SIP order 5 trial: matched=4787 robust_rms=0.432 arcsec worst_quadrant_rms=0.511 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=4787 robust_rms_before=1.237 arcsec robust_rms_before_corrected=0.405 arcsec robust_rms_after=0.432 arcsec worst_quadrant_rms_before=0.467 worst_quadrant_rms_after=0.511
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.467 arcsec) - keeping the original
WCS_QUALITY_DIAG: file=fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits N_match=4787 sigma_overall_arcsec=0.401 sigma_q1_arcsec=0.377 sigma_q2_arcsec=0.445 sigma_q3_arcsec=0.391 sigma_q4_arcsec=0.416 n_q1=1672 n_q2=816 n_q3=1595 n_q4=704 worst_quadrant_to_overall_ratio=1.112
The image catalog is written to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits -region wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
Saving fully-calibrated image wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.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-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/wcs_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits
Preparing the HTML report for the field CVn-02-Q2b1x1 with default.sex.telephoto_lens_vSTL
Forced photometry on wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits at 13:33:57.66 +34:36:16.6:  13.69 +/- 0.05  detection
Forced photometry on wcs_CVn-02-Q2b1x1_2026-05-18_00-59-26_20.00sec_4.90C_LIGHT_1576.fits at 13:31:53.73 +39:10:53.8:  13.21 +/- 0.03  detection
Forced photometry on wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits at 13:31:53.73 +39:10:53.8:  13.20 +/- 0.03  detection
Forced photometry on wcs_CVn-02-Q2b1x1_2026-05-18_01-00-14_20.00sec_5.00C_LIGHT_1577.fits at 13:33:57.66 +34:36:16.6:  13.72 +/- 0.05  detection
Forced photometry reference-image weighted average:  13.20 +/- 0.02
Forced photometry reference-image weighted average:  13.71 +/- 0.04
Forced photometry filter REJECTED candidate at 13:31:53.73 +39:10:53.8: ref_mag=13.20 +/- 0.02 new_mean_mag=13.3911 delta=-0.19 (need > 0.90)
Forced photometry filter REJECTED candidate at 13:33:57.66 +34:36:16.6: ref_mag=13.71 +/- 0.04 new_mean_mag=13.8904 delta=-0.18 (need > 0.90)
make_report_in_HTML.sh Phase 1 (network queries): 1s
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: 1s
  
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Considering the candidate 31601_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129
The candidate 31601_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129 did not pass the final checks
Discovery image 2     2026 08 19.18054    2461271.68054    13.51    13:37:31.26 +40:32:56.4   1063 1534   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits

**** FOUND  13:37:31.30 +40:32:56.8 in the exclusion list exclusion_list.txt ****
  
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Considering the candidate 31604_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129
The candidate 31604_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129 did not pass the final checks
Discovery image 1     2026 08 19.17986    2461271.67986    13.38    13:31:53.74 +39:10:53.6   1675 2409   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
Discovery image 2     2026 08 19.18054    2461271.68054    13.40    13:31:53.73 +39:10:54.1   1668 2411   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits

  
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Considering the candidate 31689_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129
The candidate 31689_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129 did not pass the final checks
Discovery image 2     2026 08 19.18054    2461271.68054    13.48    13:32:26.74 +39:16:44.9   1607 2348   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits

**** FOUND  13:32:26.71 +39:16:44.0 in the exclusion list exclusion_list.txt ****
  
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Considering the candidate 31693_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129
The candidate 31693_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129 did not pass the final checks
Discovery image 2     2026 08 19.18054    2461271.68054    13.53    13:38:42.66 +38:23:49.6   0823 2831   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits

**** FOUND  13:38:42.66 +38:23:50.4 in the exclusion list exclusion_list.txt ****
  
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Considering the candidate 31694_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129
The candidate 31694_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129 did not pass the final checks
Discovery image 2     2026 08 19.18054    2461271.68054    13.58    13:20:51.33 +41:44:10.5   3014 0920   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits

**** FOUND  13:20:51.31 +41:44:09.5 in the exclusion list exclusion_list.txt ****
  
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Considering the candidate 31775_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129
The candidate 31775_fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129 did not pass the final checks
Discovery image 1     2026 08 19.17986    2461271.67986    13.85    13:33:57.65 +34:36:16.8   1248 5175   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-18-49_20.00sec_-0.00C_LIGHT_0128.fits
Discovery image 2     2026 08 19.18054    2461271.68054    13.94    13:33:57.67 +34:36:16.4   1241 5177   /data_ssd/NMW-TexasTech/workdir//img_2026-08-18_CI_CVn-02-Q2b1x1_235518_TTUQ2b1x1_1224414_Xk4mhsU4/fd_CVn-02-Q2b1x1_2026-08-18_23-19-48_20.00sec_0.00C_LIGHT_0129.fits

make_report_in_HTML.sh Phase 2 (HTML assembly): 0s
make_report_in_HTML.sh TOTAL: 2s
Prepared the HTML report for the field CVn-02-Q2b1x1 with default.sex.telephoto_lens_vSTL
*------ done with default.sex.telephoto_lens_vSTL ------*
#### The local exclusion list is exclusion_list_local.txt ####
########### Completed CVn-02-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)2461271.67985707 -observatory V36
09:19:44.78 +17:08:44.7 Mercury (-1.5mag)
12:39:59.34 -06:18:17.7 Venus (-4.5mag)
06:20:50.88 +23:41:39.6 Mars (1.3mag)
08:52:42.76 +18:04:02.5 Jupiter (-1.8mag)
00:55:16.89 +03:05:14.4 Saturn (0.5mag)
04:12:48.11 +20:59:42.9 Uranus (5.7mag)
00:15:22.54 +00:07:58.2 Neptune (7.7mag)
20:27:07.42 -23:34:09.1 Pluto (14.5mag)
14:42:17.86 -21:55:05.3 Moon (-10.1mag)
-rw-r--r-- 1 apache apache 363 Aug 19 00:14 planets.txt
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT)2461271.67985707:
08:52:39.21 +18:04:18.9 Io (6.1mag)
08:52:53.64 +18:03:13.4 Europa (6.3mag)
08:52:28.39 +18:05:09.3 Ganymede (5.6mag)
08:52:19.57 +18:05:46.4 Callisto (6.8mag)
08:50:10.57 +18:10:07.9 Himalia (15.7mag)
08:52:42.34 +18:04:04.6 Thebe (16.6mag)
08:49:48.70 +18:06:33.6 Elara (17.7mag)
08:56:51.23 +17:38:36.5 Pasiphae (17.9mag)
08:55:09.11 +18:16:50.5 Carme (19.0mag)
00:55:27.00 +03:05:18.4 Titan (8.4mag)
00:55:13.77 +03:05:21.9 Rhea (9.7mag)
00:55:49.74 +03:06:19.3 Iapetus (11.1mag)
00:55:32.56 +03:05:02.2 Hyperion (14.4mag)
00:54:25.53 +02:57:02.4 Phoebe (16.4mag)
-rw-r--r-- 1 apache apache 568 Aug 19 00:14 moons.txt
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT)2461271.67985707:
19:54:34.73 -16:27:47.0 JWST
16:37:52.65 +47:03:17.8 Chandra
22:19:31.48 +56:19:28.9 XMM-Newton
-rw-r--r-- 1 apache apache 96 Aug 19 00:14 spacecraft.txt
############################################################
Positions of bright comets computed with util/comet_finder/main.py for JD(UT)2461271.67985707 -observatory V36
03:25:15.51 +18:13:26.7 17.6mag P/1996 R2 (Lagerkvist)
17:59:57.23 -34:31:12.3 14.1mag P/2010 H2 (Vales)
07:03:43.99 -69:20:46.3 17.3mag C/2014 UN271 (Bernardinelli-Bernstein)
06:12:28.61 +33:14:02.4 17.7mag C/2017 K2 (PANSTARRS)
04:13:31.27 +41:33:40.4 17.3mag P/2021 N1 (ZTF)
22:29:26.02 +30:39:26.5 17.3mag C/2022 E2 (ATLAS)
06:54:01.14 +26:20:36.2 16.8mag C/2022 N2 (PANSTARRS)
10:31:44.83 +27:59:13.1 17.0mag C/2022 QE78 (ATLAS)
09:36:11.55 +05:18:22.4 18.0mag C/2022 R6 (PANSTARRS)
15:14:47.77 -12:44:16.2 18.0mag P/2023 B1 (PANSTARRS)
20:57:01.08 +64:34:25.6 17.9mag C/2023 H5 (Lemmon)
15:38:33.49 -13:56:45.0 14.5mag C/2023 R1 (PANSTARRS)
08:19:59.11 +31:51:21.8 15.5mag C/2024 E1 (Wierzchos)
15:05:48.39 +15:32:08.2 17.8mag C/2024 G6 (ATLAS)
18:50:11.76 +43:27:58.1 13.7mag C/2024 J3 (ATLAS)
20:54:14.11 +49:39:01.8 17.5mag C/2024 R4 (PANSTARRS)
05:23:30.80 -12:53:52.5 15.3mag C/2024 T5 (ATLAS)
07:02:53.22 +22:11:32.5 17.9mag C/2025 J1 (Borisov)
10:48:33.53 +20:10:50.6 17.1mag C/2025 V2 (Rankin)
13:05:10.40 +01:35:16.7 16.9mag C/2025 Y1 (ATLAS)
16:07:03.67 +76:40:20.9 16.6mag C/2026 A2 (Bok)
03:09:52.63 +46:20:12.5 17.2mag C/2026 B2 (Sun-Gao)
11:56:04.24 +09:38:16.8 17.4mag A/2026 E1
22:09:30.42 -31:21:58.5 7.1mag 10P/Tempel
11:35:42.04 -04:06:16.7 16.3mag 29P/Schwassmann-Wachmann
11:29:58.40 +01:03:29.7 17.4mag 63P/Wild
00:52:31.57 -05:56:01.3 15.4mag 65P/Gunn
05:59:55.93 +20:22:58.5 13.7mag 78P/Gehrels
20:28:21.45 -24:42:09.9 17.5mag 84P/Giclas
03:09:58.56 +14:23:00.7 16.9mag 88P/Howell
08:23:00.62 +26:04:43.8 16.4mag 93P/Lovas
04:38:00.25 +21:09:37.6 17.3mag 112P/Urata-Niijima
06:32:21.47 +28:50:35.1 16.1mag 114P/Wiseman-Skiff
09:44:16.40 +24:41:49.0 14.9mag 123P/West-Hartley
12:05:55.96 -14:25:27.2 17.2mag 124P/Mrkos
05:52:20.89 +21:04:50.0 16.0mag 128P/Shoemaker-Holt
06:46:50.04 +18:18:03.1 17.9mag 131P/Mueller
00:00:43.81 +03:12:01.5 17.5mag 139P/Vaisala-Oterma
03:13:15.03 -18:44:54.0 13.1mag 161P/Hartley-IRAS
07:53:14.32 +38:07:20.8 16.0mag 162P/Siding Spring
11:44:14.83 +34:26:48.1 12.0mag 169P/NEAT
03:01:29.76 +09:28:51.2 17.6mag 220P/McNaught
16:48:22.57 -10:54:12.8 18.0mag 235P/LINEAR
20:17:02.14 -52:10:40.9 17.9mag 259P/Garradd
03:54:04.14 +29:37:03.0 15.3mag 260P/McNaught
07:38:02.35 +37:17:02.4 17.3mag 295P/LINEAR
15:14:41.99 +01:54:52.3 17.8mag 391P/Kowalski
09:10:51.04 +17:49:46.2 17.9mag 450P/LONEOS
-rw-r--r-- 1 apache apache 2.3K Aug 19 00:14 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 00:14 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 00:14 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 00:14 tns_transients_list.txt

=== Transient Factory Profiling ===
Started: Wed Aug 19 00:13:51 CDT 2026
=======================================
TIMING SExtractor: 1 seconds
TIMING matching_and_photometry: 0 seconds
TIMING lightcurve_write: 1 seconds
TIMING select_aperture: 0 seconds
    VAST_RUN_default.sex.telephoto_lens_onlybrightstars_v1: 2s (0.03 min)
    WCS_CACHE_SETUP: 0s (0.00 min)
    WCS_CALIBRATION_AND_EPHEMERIS: 27s (0.45 min)
    PLATE_VERIFY_AND_POINTING: 0s (0.00 min)
    UCAC5_PLATE_SOLVING: 0s (0.00 min)
    MAGNITUDE_CALIBRATION: 10s (0.17 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: 0s (0.00 min)
    WAIT_FOR_UCAC5: 4s (0.07 min)
    WCS_IMAGE_ARCHIVING: 0s (0.00 min)
    HTML_REPORT: 0s (0.00 min)
  SE_CONFIG_default.sex.telephoto_lens_onlybrightstars_v1: 43s (0.72 min)
TIMING SExtractor: 8 seconds
TIMING matching_and_photometry: 2 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 2 seconds
    VAST_RUN_default.sex.telephoto_lens_vSTL: 12s (0.20 min)
    WCS_CACHE_SETUP: 0s (0.00 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: 13s (0.22 min)
    MAGCAL_SANITY_CHECK: 0s (0.00 min)
      FILTER_MAGNITUDE_CONSOLIDATED: 0s (0.00 min)
      FILTER_FRAME_EDGE: 1s (0.02 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: 0s (0.00 min)
    WAIT_FOR_UCAC5: 0s (0.00 min)
    WCS_IMAGE_ARCHIVING: 0s (0.00 min)
    HTML_REPORT: 2s (0.03 min)
  SE_CONFIG_default.sex.telephoto_lens_vSTL: 30s (0.50 min)
FIELD_CVn-02-Q2b1x1: 86s (1.43 min)
=======================================
TOTAL_RUNTIME: 102s (1.70 min)
Finished: Wed Aug 19 00:15:33 CDT 2026