FITS images used in this processing run:

Field PsA-04-Q2b1x1 reference image: PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
Field PsA-04-Q2b1x1 reference image: PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
Field PsA-04-Q2b1x1 second-epoch image: PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
Field PsA-04-Q2b1x1 second-epoch image: PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits

## VaST run with SExtractor config file default.sex.telephoto_lens_onlybrightstars_v1 ##
Images processed 4
Images used for photometry 4
Ref.  image: 2461230.90518097 09.07.2026 09:43:17.636   /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
First image: 2461230.90518097 09.07.2026 09:43:17.636   /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
Last  image: 2461335.67618657 22.10.2026 04:13:32.520   /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -8.62
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: 3 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):  1867
Objects passed selection criteria:  1861
Measurements per detected object (mean, median, min, max):    2.8    2.0    2    4
Measurements per selected object (mean, median, min, max):    2.8    2.0    2    4
Average stars detected per image: 1350.75
Average stars matched: 1057.5 (78.2898 %)
Memory usage VmPeak:   228740 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Thu Oct 15 15:05:03 CDT 2026
VaST build number  1.0rc89-241-g3eca6a38
OpenMP enabled: Yes
SExtractor version 2.25.2 (2026-10-15)
GNU bash, version 5.3.20(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Wed Oct 21 23:20:04 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: 2461230.90518097 09.07.2026 09:43:17.636   /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
First image: 2461230.90518097 09.07.2026 09:43:17.636   /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
Last  image: 2461335.67618657 22.10.2026 04:13:32.520   /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
JD time system (TT/UTC/UNKNOWN): UTC
Transient candidates found: 14
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -8.25
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: 7 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):  11839
Objects passed selection criteria:  11804
Measurements per detected object (mean, median, min, max):    3.0    3.0    2    4
Measurements per selected object (mean, median, min, max):    3.0    3.0    2    4
Average stars detected per image: 9412.25
Average stars matched: 7737.75 (82.2094 %)
Memory usage VmPeak:   237156 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Thu Oct 15 15:05:03 CDT 2026
VaST build number  1.0rc89-241-g3eca6a38
OpenMP enabled: Yes
SExtractor version 2.25.2 (2026-10-15)
GNU bash, version 5.3.20(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Wed Oct 21 23:21:00 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
SEXTRACTOR_CONFIG_FILES_HIGH_PRIORITY_EXTRA= default.sex.telephoto_lens_vTTU
HIGH_PRIORITY_FIELDS= Sco6 Oph-08-Q1b1x1 Oph-08-Q2b1x1 Sco-04-Q1b1x1 Sco-04-Q2b1x1 Sgr-04-Q1b1x1 Sgr-04-Q2b1x1 242
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: 
PsA-04-Q2b1x1
#######################################
########### Starting PsA-04-Q2b1x1 ###########
Processing PsA-04-Q2b1x1
server tau has sufficient free disk space available: 545460 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 545460 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.png' -> 'transient_report/PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits_preview.png'

PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits


renamed 'PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.png' -> 'transient_report/PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits_preview.png'

PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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= 5803.9075
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 1097.5368
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 6612.6519
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 1294.8137
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 6522.8334
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 1227.4255
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 1.13934
INFO:                  SECOND_EPOCH__SD_ratio= 0.055
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 =     17.0900001525879 / [degC] Focuser temperature
AMBTEMP =                 16.8 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.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= '2026-10-21T23:12:55.3444649' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-10-22T04:12:55.3444649' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61335.1756405556 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-10-22T04:13:05.2438625' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61335.1757551273 / 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      =     344.346714453687 / [deg] RA of telescope" status=0
Record 32: "DEC     =    -33.9999263125409 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     22.0541666666667 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =               186.49 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.64742241563885 / 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  = 'PsA-04'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '22 57 23'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '-34 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  =                20692 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20692 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     17.0900001525879 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     17.0900001525879 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 12.9 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 78.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               907.11 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 16.8 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                354.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             5.400432 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             3.600288 / [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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/d_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits :)

Spent 0.732428 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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/d_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     16.7600002288818 / [degC] Focuser temperature
AMBTEMP =                 16.8 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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= '2026-10-21T23:13:32.5204446' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-10-22T04:13:32.5204446' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61335.1760708331 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-10-22T04:13:42.4239022' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61335.1761854514 / 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      =     344.346714483261 / [deg] RA of telescope" status=0
Record 32: "DEC     =    -33.9999262893217 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     22.0391666666667 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     186.631111111111 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.64910990478262 / 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  = 'PsA-04'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '22 57 23'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '-34 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  =                20692 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20692 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     16.7600002288818 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     16.7600002288818 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 12.9 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 78.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               907.11 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 16.8 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                354.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             5.400432 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             3.600288 / [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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/d_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits :)

Spent 0.698476 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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/d_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Previews of the CALIBRATED second-epoch images:


fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits



fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
  
SExtractor catalog cache: saved PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.cat to cache
SExtractor catalog cache: saved PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.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/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Checking WCS cache directory local_wcs_cache
Checking 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: 2461335.67575630
Re-using ../asassn_transients_list.txt
'../asassn_transients_list.txt' -> 'asassn_transients_list.txt'
Re-using ../tocp_transients_list.txt
'../tocp_transients_list.txt' -> 'tocp_transients_list.txt'
Re-using ../tns_transients_list.txt
'../tns_transients_list.txt' -> 'tns_transients_list.txt'
Plate-solving the images
wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits exists and is non-empty
wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits exists and is non-empty
wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits exists and is non-empty
wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits exists and is non-empty
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits (1st reference image)
verification OK: wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
Image size: 937.5'x625.1'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 22:57:25.622 -34:00:40.75 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_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits (1st new image)
verification OK: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
Image size: 936.9'x624.7'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 22:57:22.334 -33:59:58.83 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the first second-epoch image (pointing accuracy)
Reference image center 22:57:25.622 -34:00:40.75
Second-epoch image center 22:57:22.334 -33:59:58.83
Angular distance between the image centers 0.0163 deg.
Soft limit: 0.50 deg.  Hard limit: 1.00 deg.
###################################
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits (2nd new image)
verification OK: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Image size: 936.9'x624.8'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 22:57:23.262 -33:59:50.33 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the second second-epoch image (pointing accuracy)
Reference image center 22:57:25.622 -34:00:40.75
Second-epoch image center 22:57:23.262 -33:59:50.33
Angular distance between the image centers 0.0162 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  22:57:22.334 -33:59:58.83
Second-epoch second image center 22:57:23.262 -33:59:50.33
Angular distance between the image centers 0.00398 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/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits &> /tmp/tmp.APe7xJ3uEK
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits &> /tmp/tmp.qfwOSBAJNy
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits &> /tmp/tmp.8efmmIQiHy
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits &> /tmp/tmp.g0iKdVfEwp
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Calibrating the magnitude scale
Found non-empty wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.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_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits and wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.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_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits and wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat 
Found non-empty wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits and wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat
The reference image (wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits) and catalog (wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat) found
'wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat' -> 'wcsmag.cat'
Read 1183 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 334.4424 to 353.9626 deg, Dec -39.1780 to -28.5199 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 334.4424 to 353.9626 deg, Dec -39.1780 to -28.5199 deg
Loaded 5070 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): 876 out of 882 total matches.
Matched with Tycho-2 882 out of 1183 detected stars.
The calibration function type and coefficients are written to calib.txt_param
util/calibrate_magnitude_scale 0.000000 1.000000 21.904500
a=0.000000 b=1.000000 c=21.904500
From vast_summary.log: estimated ref. image limiting mag.:  -8.62
Updating vast_summary.log: Estimated ref. image limiting mag.:  13.28

Updated vast_limiting_magnitude.log with calibrated magnitudes
Working...
Please, PLEASE, be patient!!!
All lightcurves processed!  =)
Estimated ref. image limiting mag.:  13.28

Lightcurve magnitude calibration plot:


Preparing per-reference-image forced-photometry calibration (method=tycho2 band=V)
Read 1183 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 334.4424 to 353.9626 deg, Dec -39.1780 to -28.5199 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 334.4424 to 353.9626 deg, Dec -39.1780 to -28.5199 deg
Loaded 5070 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): 876 out of 882 total matches.
Matched with Tycho-2 882 out of 1183 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00001.cat.aperture for wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
Forced-photometry filter: calibrated wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits -> calib.txt_param_ref_wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits (aperture=6.5)
Read 1486 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 334.4427 to 353.9628 deg, Dec -39.2404 to -28.5200 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 334.4427 to 353.9628 deg, Dec -39.2404 to -28.5200 deg
Loaded 5104 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): 1168 out of 1175 total matches.
Matched with Tycho-2 1175 out of 1486 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00002.cat.aperture for wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
Forced-photometry filter: calibrated wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits -> calib.txt_param_ref_wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits (aperture=6.0)
____ 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  PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
 2.2 pix  PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
 2.6 pix  fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
 2.5 pix  fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Limiting magnitude estimates:
 13.3 mag.  PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
 13.6 mag.  PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
 14.2 mag.  fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
 14.3 mag.  fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
All-image limiting magnitude estimate:  14.2 (SNR )  10.2 (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.APe7xJ3uEK (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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits 572.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits' -> 'wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.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/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
WCS_IMAGE_NAME=wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
WCS-calibrated image found: wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
Checking if the catalog wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat corresponding to the image wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits alredy exist and is non-empty...
Catalog wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat corresponding to the image wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
WCS catalog name: wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.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=120, bad_region=243, passed=1183
Got 1183 stars (including 844 good ones) from the SExtractor catalog wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat 
util/solve_plate_with_UCAC5 got 1183 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.5'
Seting catalog search parameters based on the expected field of view 937.5 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013021 (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 0.010417 (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 254 to 309 (Dec -39.2 to -28.5)
Done reading UCAC5 zone files...
Matched 810 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 810 matched stars entering correct_measured_positions(), 802 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.40" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 810 matched stars entering correct_measured_positions(), 943 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.40" 

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 254 to 309 (Dec -39.2 to -28.5)
Done reading UCAC5 zone files...
Matched 810 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 810 matched stars entering correct_measured_positions(), 942 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.43" 
Accuracy estimation diagnostic: 810 matched stars entering correct_measured_positions(), 942 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.44" 
Excluding outliers - 810 stars left (next iteration limit 891)
Stop iterations.


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

SIP_REFIT: util/identify.sh trusts the WCS of wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits N_match=810 sigma_overall_arcsec=0.457 sigma_q1_arcsec=0.392 sigma_q2_arcsec=0.506 sigma_q3_arcsec=0.499 sigma_q4_arcsec=0.450 n_q1=269 n_q2=116 n_q3=285 n_q4=140 worst_quadrant_to_overall_ratio=1.108
WCS_HEADER_DIAG: file=PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits selection=current_pairs N_selected=810 N_valid=810 bias_ra_arcsec=0.009 bias_dec_arcsec=-0.003 median_sep_arcsec=0.353 p95_sep_arcsec=1.142 n_q1=269 n_q2=116 n_q3=285 n_q4=140 occupied_cells_4x4=16/16
The image catalog is written to wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits -region wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry
############ /tmp/tmp.qfwOSBAJNy (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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits 572.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits' -> 'wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.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/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
WCS_IMAGE_NAME=wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
WCS-calibrated image found: wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
Checking if the catalog wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat corresponding to the image wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits alredy exist and is non-empty...
Catalog wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat corresponding to the image wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
WCS catalog name: wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.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=145, bad_region=304, passed=1486
Got 1486 stars (including 1052 good ones) from the SExtractor catalog wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat 
util/solve_plate_with_UCAC5 got 1486 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.5'
Seting catalog search parameters based on the expected field of view 937.5 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013021 (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 0.010417 (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 253 to 309 (Dec -39.2 to -28.5)
Done reading UCAC5 zone files...
Matched 1015 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1015 matched stars entering correct_measured_positions(), 1012 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.39" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1015 matched stars entering correct_measured_positions(), 1196 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.39" 

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 253 to 309 (Dec -39.2 to -28.5)
Done reading UCAC5 zone files...
Matched 1015 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 1015 matched stars entering correct_measured_positions(), 1196 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.40" 
Accuracy estimation diagnostic: 1015 matched stars entering correct_measured_positions(), 1196 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.41" 
Excluding outliers - 1015 stars left (next iteration limit 1116)
Stop iterations.


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

SIP_REFIT: util/identify.sh trusts the WCS of wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits N_match=1015 sigma_overall_arcsec=0.435 sigma_q1_arcsec=0.455 sigma_q2_arcsec=0.517 sigma_q3_arcsec=0.403 sigma_q4_arcsec=0.377 n_q1=351 n_q2=161 n_q3=344 n_q4=159 worst_quadrant_to_overall_ratio=1.187
WCS_HEADER_DIAG: file=PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits selection=current_pairs N_selected=1015 N_valid=1015 bias_ra_arcsec=0.008 bias_dec_arcsec=0.017 median_sep_arcsec=0.367 p95_sep_arcsec=1.144 n_q1=351 n_q2=161 n_q3=344 n_q4=159 occupied_cells_4x4=16/16
The image catalog is written to wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits -region wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry
############ /tmp/tmp.8efmmIQiHy (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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
WCS_IMAGE_NAME=wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
WCS-calibrated image found: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
Checking if the catalog wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat corresponding to the image wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits alredy exist and is non-empty...
Catalog wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat corresponding to the image wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
WCS catalog name: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.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=203, bad_region=518, passed=2156
Got 2156 stars (including 1476 good ones) from the SExtractor catalog wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat 
util/solve_plate_with_UCAC5 got 2156 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 936.9'
Seting catalog search parameters based on the expected field of view 936.9 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013013 (46.8 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010410 (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 253 to 309 (Dec -39.2 to -28.6)
Done reading UCAC5 zone files...
Matched 1422 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1420 matched stars entering correct_measured_positions(), 1419 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.31" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1420 matched stars entering correct_measured_positions(), 1727 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.32" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 253 to 309 (Dec -39.2 to -28.6)
Done reading UCAC5 zone files...
Matched 1423 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 1422 matched stars entering correct_measured_positions(), 1726 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Accuracy estimation diagnostic: 1422 matched stars entering correct_measured_positions(), 1726 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Excluding outliers - 1422 stars left (next iteration limit 1562)
Stop iterations.


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

SIP_REFIT: SIP order 2 trial: matched=1422 robust_rms=7.432 arcsec worst_region_rms=16.624 arcsec outer_annulus_rms=16.624 arcsec
SIP_REFIT: SIP order 3 trial: matched=1422 robust_rms=0.353 arcsec worst_region_rms=0.561 arcsec outer_annulus_rms=0.561 arcsec
SIP_REFIT: SIP order 5 trial: matched=1422 robust_rms=0.330 arcsec worst_region_rms=0.487 arcsec outer_annulus_rms=0.487 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=1422 robust_rms_before=0.916 arcsec robust_rms_before_corrected=0.349 arcsec robust_rms_after=0.330 arcsec worst_region_rms_before=0.517 worst_region_rms_after=0.487 outer_annulus_rms_before=1.216 outer_annulus_rms_after=0.487
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-region baseline 0.517 arcsec) - keeping the original
SIP_REFIT_REJECTED: file=fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits worst_region_rms_kept=0.517 arcsec robust_rms_kept=0.349 arcsec matched=1422
WCS_QUALITY_DIAG: file=fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits N_match=1422 sigma_overall_arcsec=0.351 sigma_q1_arcsec=0.293 sigma_q2_arcsec=0.389 sigma_q3_arcsec=0.358 sigma_q4_arcsec=0.357 n_q1=401 n_q2=288 n_q3=448 n_q4=285 worst_quadrant_to_overall_ratio=1.106
WCS_HEADER_DIAG: file=fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits selection=current_pairs N_selected=1422 N_valid=1422 bias_ra_arcsec=-0.661 bias_dec_arcsec=0.520 median_sep_arcsec=0.865 p95_sep_arcsec=1.686 n_q1=401 n_q2=288 n_q3=448 n_q4=285 occupied_cells_4x4=16/16
The image catalog is written to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits -region wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry
############ /tmp/tmp.g0iKdVfEwp (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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
WCS_IMAGE_NAME=wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
WCS-calibrated image found: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Checking if the catalog wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat corresponding to the image wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits alredy exist and is non-empty...
Catalog wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat corresponding to the image wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
WCS catalog name: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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=212, bad_region=514, passed=2188
Got 2188 stars (including 1509 good ones) from the SExtractor catalog wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat 
util/solve_plate_with_UCAC5 got 2188 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 936.9'
Seting catalog search parameters based on the expected field of view 936.9 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013013 (46.8 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010410 (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 253 to 309 (Dec -39.2 to -28.6)
Done reading UCAC5 zone files...
Matched 1454 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1452 matched stars entering correct_measured_positions(), 1452 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.32" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1452 matched stars entering correct_measured_positions(), 1762 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 253 to 309 (Dec -39.2 to -28.6)
Done reading UCAC5 zone files...
Matched 1456 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 1454 matched stars entering correct_measured_positions(), 1762 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Accuracy estimation diagnostic: 1454 matched stars entering correct_measured_positions(), 1762 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.35" 
Excluding outliers - 1454 stars left (next iteration limit 1597)
Stop iterations.


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

SIP_REFIT: SIP order 2 trial: matched=1454 robust_rms=7.545 arcsec worst_region_rms=17.085 arcsec outer_annulus_rms=17.085 arcsec
SIP_REFIT: SIP order 3 trial: matched=1454 robust_rms=0.370 arcsec worst_region_rms=0.545 arcsec outer_annulus_rms=0.545 arcsec
SIP_REFIT: SIP order 5 trial: matched=1454 robust_rms=0.332 arcsec worst_region_rms=0.408 arcsec outer_annulus_rms=0.408 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=1454 robust_rms_before=0.906 arcsec robust_rms_before_corrected=0.347 arcsec robust_rms_after=0.332 arcsec worst_region_rms_before=0.474 worst_region_rms_after=0.408 outer_annulus_rms_before=1.169 outer_annulus_rms_after=0.408
verification OK: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.sip_refit.ENmEkI/candidate.fits
verification OK: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.sip_refit.ENmEkI/candidate.fits
Image size: 937.1'x624.8'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 22:57:23.299 -33:59:50.83 J2000 4789.000 3195.000 

 ### Converting SExtractor-derived pixel positions to celestial coordinates using xy2sky from WCSTools ###
 ### Converted positions of 2188 stars ###
'wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.sip_refit.ENmEkI/candidate.wcscat' -> 'vast_debug_catalog_before_xy2sky_correction_1318804.cat.log'
'wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.sip_refit.ENmEkI/candidate.wcscat.xy2sky.1zG59H' -> 'vast_debug_catalog_after_xy2sky_correction_1318804.cat.log'
SIP_REFIT: applied the refit solution (order 5, robust RMS 0.906 -> 0.332 arcsec)
SIP_REFIT: re-matching the catalog with the refit solution (cycle 1, search radius 3.0 arcsec, 1454 pairs from the previous matching)
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 253 to 309 (Dec -39.2 to -28.6)
Done reading UCAC5 zone files...
Matched 1355 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
SIP_REFIT: re-match found 1355 pairs (1454 from the previous matching)
SIP_REFIT: SIP order 2 trial: matched=1355 robust_rms=7.465 arcsec worst_region_rms=17.395 arcsec outer_annulus_rms=17.395 arcsec
SIP_REFIT: SIP order 3 trial: matched=1355 robust_rms=0.370 arcsec worst_region_rms=0.528 arcsec outer_annulus_rms=0.528 arcsec
SIP_REFIT: SIP order 5 trial: matched=1355 robust_rms=0.334 arcsec worst_region_rms=0.427 arcsec outer_annulus_rms=0.427 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=1355 robust_rms_before=0.333 arcsec robust_rms_before_corrected=0.333 arcsec robust_rms_after=0.334 arcsec worst_region_rms_before=0.408 worst_region_rms_after=0.427 outer_annulus_rms_before=0.408 outer_annulus_rms_after=0.427
SIP_REFIT: the refit on the re-matched pairs is worse than the solution it would replace (worst-region 0.427 vs 0.408 arcsec) - keeping the current solution
SIP_REFIT: the refit on the re-matched pairs was not applied - keeping the current solution
Accuracy estimation diagnostic: 1355 matched stars entering correct_measured_positions(), 1760 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.32" 
Accuracy estimation diagnostic: 1355 matched stars entering correct_measured_positions(), 1758 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.31" 
WCS_QUALITY_DIAG: file=fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits N_match=1355 sigma_overall_arcsec=0.360 sigma_q1_arcsec=0.329 sigma_q2_arcsec=0.420 sigma_q3_arcsec=0.357 sigma_q4_arcsec=0.376 n_q1=384 n_q2=277 n_q3=414 n_q4=280 worst_quadrant_to_overall_ratio=1.165
WCS_HEADER_DIAG: file=fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits selection=current_pairs N_selected=1355 N_valid=1355 bias_ra_arcsec=-0.016 bias_dec_arcsec=0.005 median_sep_arcsec=0.277 p95_sep_arcsec=0.791 n_q1=384 n_q2=277 n_q3=414 n_q4=280 occupied_cells_4x4=16/16
The image catalog is written to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits -region wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry
Saving the final (post-refit) wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits to local_wcs_cache/
'wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits' -> 'local_wcs_cache/wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits'
Saving the final (post-refit) wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits to local_wcs_cache/
'wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits' -> 'local_wcs_cache/wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits'
Saving the final (post-refit) wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits to local_wcs_cache/
'wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits' -> 'local_wcs_cache/wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits'
Saving the final (post-refit) wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits to local_wcs_cache/
'wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits' -> 'local_wcs_cache/wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits'
###################################
# Pre-local-correction WCS quality summary (see WCS_QUALITY_DIAG lines above)
ref1=PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits sigma_overall=0.457 worst_q_ratio=1.108
ref2=PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits sigma_overall=0.435 worst_q_ratio=1.187
new1=fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits sigma_overall=0.351 worst_q_ratio=1.106
new2=fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits sigma_overall=0.360 worst_q_ratio=1.165
reference average sigma_overall=0.446 worst_q_ratio=1.1475
warn-on-ratio threshold: 2.0x reference
###################################

Astrometric residual vector field (catalog-matched stars):

plot_astrometric_residuals_xy.py: wrote wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207_astrometric_residuals.png (810 matched stars from wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.41 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403_astrometric_residuals.png (1015 matched stars from wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.39 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169_astrometric_residuals.png (1422 matched stars from wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.31 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170_astrometric_residuals.png (1355 matched stars from wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.28 arcsec)


Copying WCS-calibrated images back to input directory
Saving fully-calibrated image wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits'
Saving fully-calibrated image wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits'
Preparing the HTML report for the field PsA-04-Q2b1x1 with default.sex.telephoto_lens_onlybrightstars_v1
No candidates found here
Prepared the HTML report for the field PsA-04-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/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
  
SExtractor catalog cache: saved PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.cat to cache
SExtractor catalog cache: saved PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_vSTL
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Checking WCS cache directory local_wcs_cache
Found WCS cache directory local_wcs_cache
Creating symlink local_wcs_cache/wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
Creating symlink local_wcs_cache/wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
Creating symlink local_wcs_cache/wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
Creating symlink local_wcs_cache/wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Checking 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_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits exists and is non-empty
wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits exists and is non-empty
wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits exists and is non-empty
wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits exists and is non-empty
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits (1st reference image)
verification OK: wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
Image size: 937.5'x625.1'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 22:57:25.622 -34:00:40.75 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_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits (1st new image)
verification OK: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
Image size: 936.9'x624.7'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 22:57:22.334 -33:59:58.83 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the first second-epoch image (pointing accuracy)
Reference image center 22:57:25.622 -34:00:40.75
Second-epoch image center 22:57:22.334 -33:59:58.83
Angular distance between the image centers 0.0163 deg.
Soft limit: 0.50 deg.  Hard limit: 1.00 deg.
###################################
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits (2nd new image)
verification OK: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Image size: 937.1'x624.8'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 22:57:23.299 -33:59:50.83 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the second second-epoch image (pointing accuracy)
Reference image center 22:57:25.622 -34:00:40.75
Second-epoch image center 22:57:23.299 -33:59:50.83
Angular distance between the image centers 0.0160 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  22:57:22.334 -33:59:58.83
Second-epoch second image center 22:57:23.299 -33:59:50.83
Angular distance between the image centers 0.00401 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/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits &> /tmp/tmp.0F45y9OfB4
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits &> /tmp/tmp.5SQrDYvjWR
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits &> /tmp/tmp.hY2MFP5lVJ
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits &> /tmp/tmp.8xzXeaHUPV
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Calibrating the magnitude scale
Found non-empty wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.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_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits and wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.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_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits and wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat 
Found non-empty wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits and wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat
The reference image (wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits) and catalog (wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat) found
'wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat' -> 'wcsmag.cat'
Read 9043 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 334.4155 to 354.1392 deg, Dec -39.2769 to -28.4989 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 334.4155 to 354.1392 deg, Dec -39.2769 to -28.4989 deg
Loaded 5175 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): 4151 out of 4206 total matches.
Matched with Tycho-2 4206 out of 9043 detected stars.
The calibration function type and coefficients are written to calib.txt_param
util/calibrate_magnitude_scale 0.000000 1.000000 21.687300
a=0.000000 b=1.000000 c=21.687300
From vast_summary.log: estimated ref. image limiting mag.:  -8.25
Updating vast_summary.log: Estimated ref. image limiting mag.:  13.44

Updated vast_limiting_magnitude.log with calibrated magnitudes
Working...
Please, PLEASE, be patient!!!
All lightcurves processed!  =)
Estimated ref. image limiting mag.:  13.44

Lightcurve magnitude calibration plot:


Preparing per-reference-image forced-photometry calibration (method=tycho2 band=V)
Read 9043 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 334.4155 to 354.1392 deg, Dec -39.2769 to -28.4989 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 334.4155 to 354.1392 deg, Dec -39.2769 to -28.4989 deg
Loaded 5175 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): 4151 out of 4206 total matches.
Matched with Tycho-2 4206 out of 9043 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00001.cat.aperture for wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
Forced-photometry filter: calibrated wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits -> calib.txt_param_ref_wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits (aperture=4.7)
Read 10991 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 334.4156 to 354.1393 deg, Dec -39.2569 to -28.4575 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 334.4156 to 354.1393 deg, Dec -39.2569 to -28.4575 deg
Loaded 5179 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): 4121 out of 4191 total matches.
Matched with Tycho-2 4191 out of 10991 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00002.cat.aperture for wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
Forced-photometry filter: calibrated wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits -> calib.txt_param_ref_wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits (aperture=4.6)
____ End of magnitude calibration ____
Applying consolidated magnitude filters...
Preparing the exclusion lists for this field
Done with filtering
Found 5 candidate transients before the final filtering.  (Hard limit: 10000)
Median FWHM seeing for isolated stars:
 2.1 pix  PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
 2.1 pix  PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
 2.4 pix  fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
 2.4 pix  fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Limiting magnitude estimates:
 13.4 mag.  PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
 13.8 mag.  PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
 14.2 mag.  fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
 14.2 mag.  fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
All-image limiting magnitude estimate:  14.2 (SNR )  12.8 (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.0F45y9OfB4 (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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits 572.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits' -> 'wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.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/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
WCS_IMAGE_NAME=wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
WCS-calibrated image found: wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
Checking if the catalog wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat corresponding to the image wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits alredy exist and is non-empty...
Catalog wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat corresponding to the image wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits
WCS catalog name: wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.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=1, blended=213, bad_region=1607, passed=9042
Got 9042 stars (including 7252 good ones) from the SExtractor catalog wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat 
util/solve_plate_with_UCAC5 got 9042 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.5'
Seting catalog search parameters based on the expected field of view 937.5 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013021 (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 0.010417 (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 253 to 309 (Dec -39.3 to -28.5)
Done reading UCAC5 zone files...
Matched 4854 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4851 matched stars entering correct_measured_positions(), 4851 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.62" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4851 matched stars entering correct_measured_positions(), 7781 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.60" 

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 253 to 309 (Dec -39.3 to -28.5)
Done reading UCAC5 zone files...
Matched 4854 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4851 matched stars entering correct_measured_positions(), 7781 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.62" 
Accuracy estimation diagnostic: 4851 matched stars entering correct_measured_positions(), 7781 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.64" 
Excluding outliers - 4851 stars left (next iteration limit 5336)
Stop iterations.


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

SIP_REFIT: wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.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_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits N_match=4851 sigma_overall_arcsec=0.652 sigma_q1_arcsec=0.623 sigma_q2_arcsec=0.606 sigma_q3_arcsec=0.753 sigma_q4_arcsec=0.567 n_q1=1671 n_q2=799 n_q3=1550 n_q4=831 worst_quadrant_to_overall_ratio=1.154
WCS_HEADER_DIAG: file=PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits selection=current_pairs N_selected=4851 N_valid=4851 bias_ra_arcsec=-0.012 bias_dec_arcsec=0.011 median_sep_arcsec=0.539 p95_sep_arcsec=1.829 n_q1=1671 n_q2=799 n_q3=1550 n_q4=831 occupied_cells_4x4=16/16
The image catalog is written to wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits -region wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry
############ /tmp/tmp.5SQrDYvjWR (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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits 572.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits' -> 'wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.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/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
WCS_IMAGE_NAME=wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
WCS-calibrated image found: wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
Checking if the catalog wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat corresponding to the image wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits alredy exist and is non-empty...
Catalog wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat corresponding to the image wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits
WCS catalog name: wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.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=1, blended=284, bad_region=1588, passed=10990
Got 10990 stars (including 9156 good ones) from the SExtractor catalog wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat 
util/solve_plate_with_UCAC5 got 10990 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.5'
Seting catalog search parameters based on the expected field of view 937.5 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013021 (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 0.010417 (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 253 to 309 (Dec -39.3 to -28.5)
Done reading UCAC5 zone files...
Matched 4858 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4854 matched stars entering correct_measured_positions(), 4854 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.50" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4854 matched stars entering correct_measured_positions(), 9779 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.50" 

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 253 to 309 (Dec -39.3 to -28.5)
Done reading UCAC5 zone files...
Matched 4858 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4856 matched stars entering correct_measured_positions(), 9779 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.51" 
Accuracy estimation diagnostic: 4856 matched stars entering correct_measured_positions(), 9779 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.52" 
Excluding outliers - 4856 stars left (next iteration limit 5339)
Stop iterations.


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

SIP_REFIT: wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.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_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits N_match=4856 sigma_overall_arcsec=0.547 sigma_q1_arcsec=0.555 sigma_q2_arcsec=0.602 sigma_q3_arcsec=0.546 sigma_q4_arcsec=0.494 n_q1=1643 n_q2=737 n_q3=1655 n_q4=821 worst_quadrant_to_overall_ratio=1.101
WCS_HEADER_DIAG: file=PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits selection=current_pairs N_selected=4856 N_valid=4856 bias_ra_arcsec=0.013 bias_dec_arcsec=0.020 median_sep_arcsec=0.474 p95_sep_arcsec=1.287 n_q1=1643 n_q2=737 n_q3=1655 n_q4=821 occupied_cells_4x4=16/16
The image catalog is written to wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits -region wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry
############ /tmp/tmp.hY2MFP5lVJ (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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
WCS_IMAGE_NAME=wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
WCS-calibrated image found: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
Checking if the catalog wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat corresponding to the image wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits alredy exist and is non-empty...
Catalog wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat corresponding to the image wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
WCS catalog name: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.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=1, blended=498, bad_region=2300, passed=12714
Got 12714 stars (including 10116 good ones) from the SExtractor catalog wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat 
util/solve_plate_with_UCAC5 got 12714 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 936.9'
Seting catalog search parameters based on the expected field of view 936.9 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013013 (46.8 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010410 (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 253 to 309 (Dec -39.3 to -28.5)
Done reading UCAC5 zone files...
Matched 4862 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4855 matched stars entering correct_measured_positions(), 4855 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.43" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4855 matched stars entering correct_measured_positions(), 10931 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.43" 

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 253 to 309 (Dec -39.3 to -28.5)
Done reading UCAC5 zone files...
Matched 4862 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4856 matched stars entering correct_measured_positions(), 10931 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.44" 
Accuracy estimation diagnostic: 4856 matched stars entering correct_measured_positions(), 10931 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.45" 
Excluding outliers - 4856 stars left (next iteration limit 5340)
Stop iterations.


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

SIP_REFIT: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.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=4856 robust_rms=6.961 arcsec worst_region_rms=15.809 arcsec outer_annulus_rms=15.809 arcsec
SIP_REFIT: SIP order 3 trial: matched=4856 robust_rms=0.485 arcsec worst_region_rms=0.766 arcsec outer_annulus_rms=0.766 arcsec
SIP_REFIT: SIP order 5 trial: matched=4856 robust_rms=0.463 arcsec worst_region_rms=0.654 arcsec outer_annulus_rms=0.654 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=4856 robust_rms_before=0.985 arcsec robust_rms_before_corrected=0.464 arcsec robust_rms_after=0.463 arcsec worst_region_rms_before=0.685 worst_region_rms_after=0.654 outer_annulus_rms_before=1.246 outer_annulus_rms_after=0.654
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-region baseline 0.685 arcsec) - keeping the original
SIP_REFIT_REJECTED: file=fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits worst_region_rms_kept=0.685 arcsec robust_rms_kept=0.464 arcsec matched=4856
WCS_QUALITY_DIAG: file=fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits N_match=4856 sigma_overall_arcsec=0.451 sigma_q1_arcsec=0.417 sigma_q2_arcsec=0.477 sigma_q3_arcsec=0.451 sigma_q4_arcsec=0.470 n_q1=1388 n_q2=970 n_q3=1572 n_q4=926 worst_quadrant_to_overall_ratio=1.059
WCS_HEADER_DIAG: file=fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits selection=current_pairs N_selected=4856 N_valid=4856 bias_ra_arcsec=-0.653 bias_dec_arcsec=0.525 median_sep_arcsec=0.912 p95_sep_arcsec=1.808 n_q1=1388 n_q2=970 n_q3=1572 n_q4=926 occupied_cells_4x4=16/16
The image catalog is written to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits -region wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry
############ /tmp/tmp.8xzXeaHUPV (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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
WCS_IMAGE_NAME=wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
WCS-calibrated image found: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Checking if the catalog wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat corresponding to the image wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits alredy exist and is non-empty...
Catalog wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat corresponding to the image wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
WCS catalog name: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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=1, blended=535, bad_region=2376, passed=13016
Got 13016 stars (including 10359 good ones) from the SExtractor catalog wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat 
util/solve_plate_with_UCAC5 got 13016 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.1'
Seting catalog search parameters based on the expected field of view 937.1 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013015 (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 0.010412 (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 253 to 309 (Dec -39.3 to -28.5)
Done reading UCAC5 zone files...
Matched 4851 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4844 matched stars entering correct_measured_positions(), 4844 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.42" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4844 matched stars entering correct_measured_positions(), 11206 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.42" 

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 253 to 309 (Dec -39.3 to -28.5)
Done reading UCAC5 zone files...
Matched 4851 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4845 matched stars entering correct_measured_positions(), 11206 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.44" 
Accuracy estimation diagnostic: 4845 matched stars entering correct_measured_positions(), 11206 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.45" 
Excluding outliers - 4845 stars left (next iteration limit 5328)
Stop iterations.


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

SIP_REFIT: wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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=4845 robust_rms=7.003 arcsec worst_region_rms=15.321 arcsec outer_annulus_rms=15.321 arcsec
SIP_REFIT: SIP order 3 trial: matched=4845 robust_rms=0.490 arcsec worst_region_rms=0.730 arcsec outer_annulus_rms=0.730 arcsec
SIP_REFIT: SIP order 5 trial: matched=4845 robust_rms=0.465 arcsec worst_region_rms=0.612 arcsec outer_annulus_rms=0.612 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=4845 robust_rms_before=0.463 arcsec robust_rms_before_corrected=0.473 arcsec robust_rms_after=0.465 arcsec worst_region_rms_before=0.647 worst_region_rms_after=0.612 outer_annulus_rms_before=0.647 outer_annulus_rms_after=0.612
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-region baseline 0.647 arcsec) - keeping the original
SIP_REFIT_REJECTED: file=fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits worst_region_rms_kept=0.647 arcsec robust_rms_kept=0.463 arcsec matched=4845
WCS_QUALITY_DIAG: file=fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits N_match=4845 sigma_overall_arcsec=0.456 sigma_q1_arcsec=0.406 sigma_q2_arcsec=0.504 sigma_q3_arcsec=0.470 sigma_q4_arcsec=0.469 n_q1=1413 n_q2=953 n_q3=1559 n_q4=920 worst_quadrant_to_overall_ratio=1.105
WCS_HEADER_DIAG: file=fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits selection=current_pairs N_selected=4845 N_valid=4845 bias_ra_arcsec=0.003 bias_dec_arcsec=0.014 median_sep_arcsec=0.373 p95_sep_arcsec=1.163 n_q1=1413 n_q2=953 n_q3=1559 n_q4=920 occupied_cells_4x4=16/16
The image catalog is written to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits -region wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry
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_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
Saving fully-calibrated image wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.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_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/wcs_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits
Preparing the HTML report for the field PsA-04-Q2b1x1 with default.sex.telephoto_lens_vSTL
Forced photometry on wcs_PsA-04-Q2b1x1_2026-07-09_04-43-17_20.00sec_-0.00C_LIGHT_0207.fits at 23:19:47.97 -37:19:18.7:  12.70 +/- 0.15  detection
Forced photometry on wcs_PsA-04-Q2b1x1_2026-07-10_04-19-55_20.00sec_4.90C_LIGHT_0403.fits at 23:19:47.97 -37:19:18.7:  12.99 +/- 0.15  detection
Forced photometry reference-image weighted average:  12.84 +/- 0.11
Forced photometry filter REJECTED candidate at 23:19:47.97 -37:19:18.7: ref_mag=12.84 +/- 0.11 new_mean_mag=12.5689 delta=0.27 (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: 0s
  
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Considering the candidate 22441_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170
The candidate 22441_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170 did not pass the final checks
Discovery image 2     2026 10 22.17619    2461335.67619    10.65    22:37:44.84 -31:48:03.8   7319 1924   /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits

Rejecting candidate due to large distance (14.2") between the two second-epoch detections
  
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Considering the candidate 22462_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170
The candidate 22462_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170 did not pass the final checks
Discovery image 2     2026 10 22.17619    2461335.67619    10.77    23:04:41.28 -34:02:59.2   3875 3235   /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits

Rejecting candidate due to large distance (14.4") between the two second-epoch detections
  
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Considering the candidate 22465_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170
The candidate 22465_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170 did not pass the final checks
Discovery image 2     2026 10 22.17619    2461335.67619    10.79    22:53:30.71 -32:55:41.0   5281 2552   /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits

**** FOUND  22:53:30.72 -32:55:40.8 in the exclusion list exclusion_list.txt ****
  
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Considering the candidate 22864_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170
The candidate 22864_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170 did not pass the final checks
Discovery image 2     2026 10 22.17619    2461335.67619    11.76    23:08:57.75 -33:30:45.5   3330 2923   /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits

Rejecting candidate due to large distance (14.2") between the two second-epoch detections
  
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Considering the candidate 23298_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170
The candidate 23298_fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170 did not pass the final checks
Discovery image 1     2026 10 22.17576    2461335.67576    12.57    23:19:48.00 -37:19:18.8   2082 5286   /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-12-55_20.00sec_-0.00C_LIGHT_0169.fits
Discovery image 2     2026 10 22.17619    2461335.67619    12.57    23:19:47.94 -37:19:18.5   2084 5287   /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_PsA-04-Q2b1x1_231750_TTUQ2b1x1_1101128_AWRKNIZ8/fd_PsA-04-Q2b1x1_2026-10-21_23-13-32_20.00sec_-0.00C_LIGHT_0170.fits

make_report_in_HTML.sh Phase 2 (HTML assembly): 0s
make_report_in_HTML.sh TOTAL: 1s
Prepared the HTML report for the field PsA-04-Q2b1x1 with default.sex.telephoto_lens_vSTL
*------ done with default.sex.telephoto_lens_vSTL ------*
#### The local exclusion list is exclusion_list_local.txt ####
########### Completed PsA-04-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)2461335.67575630 -observatory V36
15:07:54.97 -20:51:04.2 Mercury (0.3mag)
13:47:43.65 -18:24:49.3 Venus (-4.2mag)
09:04:08.67 +18:12:37.5 Mars (1.0mag)
09:40:52.11 +14:35:09.4 Jupiter (-2.0mag)
00:39:26.64 +01:18:24.2 Saturn (0.4mag)
04:10:48.40 +20:54:42.8 Uranus (5.6mag)
00:09:20.14 -00:32:02.5 Neptune (7.7mag)
20:24:11.14 -23:43:02.0 Pluto (14.5mag)
22:36:18.00 -08:22:53.5 Moon (-11.4mag)
-rw-r--r-- 1 apache apache 362 Oct 21 23:20 planets.txt
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT)2461335.67575630:
09:40:46.25 +14:35:43.1 Io (6.1mag)
09:41:02.71 +14:34:10.2 Europa (6.2mag)
09:40:38.24 +14:36:28.6 Ganymede (5.5mag)
09:40:57.55 +14:34:41.3 Callisto (6.8mag)
09:41:25.42 +14:51:39.9 Himalia (15.6mag)
09:40:49.11 +14:35:26.1 Thebe (16.4mag)
09:39:58.15 +14:58:54.3 Elara (17.5mag)
09:42:34.65 +13:59:20.6 Pasiphae (17.8mag)
09:38:42.79 +15:04:45.9 Carme (18.8mag)
00:39:35.46 +01:18:25.9 Titan (8.2mag)
00:39:19.73 +01:18:22.5 Rhea (9.6mag)
00:39:25.37 +01:16:33.1 Iapetus (11.0mag)
00:39:42.36 +01:18:08.8 Hyperion (14.1mag)
00:37:41.77 +01:05:59.2 Phoebe (16.4mag)
-rw-r--r-- 1 apache apache 568 Oct 21 23:20 moons.txt
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT)2461335.67575630:
03:49:05.81 +20:04:15.4 JWST
17:27:01.49 +36:17:46.6 Chandra
05:52:18.27 +31:49:01.4 XMM-Newton
-rw-r--r-- 1 apache apache 96 Oct 21 23:20 spacecraft.txt
############################################################
Positions of bright comets computed with util/comet_finder/main.py for JD(UT)2461335.67575630 -observatory V36
03:41:38.24 +20:09:36.5 17.1mag P/1996 R2 (Lagerkvist)
07:41:38.11 +37:33:52.9 18.0mag P/2004 V5 (LINEAR-Hill)
07:41:43.13 +37:33:40.2 18.0mag P/2004 V5-A (LINEAR-Hill)
07:41:04.01 +37:33:52.6 18.0mag P/2004 V5-B (LINEAR-Hill)
05:02:27.18 +40:52:12.5 17.9mag P/2009 Y2 (Kowalski)
18:34:59.60 -33:13:34.1 14.9mag P/2010 H2 (Vales)
07:43:22.52 -73:06:47.6 17.2mag C/2014 UN271 (Bernardinelli-Bernstein)
06:14:15.45 +34:57:48.9 17.7mag C/2017 K2 (PANSTARRS)
04:40:54.14 +48:11:18.6 17.6mag P/2021 N1 (ZTF)
07:33:39.10 +25:22:25.0 16.9mag C/2022 N2 (PANSTARRS)
09:06:10.01 +36:54:00.6 16.3mag C/2024 E1 (Wierzchos)
18:30:15.95 +41:07:08.1 17.4mag C/2024 J3 (ATLAS)
05:45:50.67 -13:39:59.6 16.5mag C/2024 T5 (ATLAS)
12:37:40.79 +15:07:06.3 16.0mag C/2025 V2 (Rankin)
14:02:06.34 -03:36:44.3 16.4mag C/2025 Y1 (ATLAS)
19:26:50.59 +60:17:08.5 15.5mag C/2026 A2 (Bok)
02:23:53.23 +41:32:48.3 18.0mag C/2026 B2 (Sun-Gao)
12:56:00.15 +15:25:32.6 17.7mag A/2026 E1
16:23:58.04 -52:10:47.0 13.6mag P/2026 R2 (Leonard)
19:22:52.67 -05:06:11.5 16.6mag P/2026 T1 (ATLAS)
23:59:26.86 +17:02:05.0 17.2mag 2P/Encke
23:10:45.35 -29:06:10.5 14.9mag 10P/Tempel
02:25:09.12 +35:59:21.3 16.5mag 11P/Tempel-Swift-LINEAR
12:18:22.20 -09:02:36.8 16.3mag 29P/Schwassmann-Wachmann
00:16:05.19 -09:04:45.4 15.7mag 65P/Gunn
07:48:50.26 +14:51:19.8 13.9mag 78P/Gehrels
02:48:26.69 +13:45:49.5 17.8mag 88P/Howell
08:17:54.02 +43:07:33.6 17.0mag 112P/Urata-Niijima
09:26:42.49 +10:12:24.9 17.7mag 114P/Wiseman-Skiff
12:02:52.21 +10:47:52.3 14.8mag 123P/West-Hartley
14:34:23.42 -35:08:32.2 18.0mag 124P/Mrkos
20:29:45.14 +10:12:03.0 9.8mag 161P/Hartley-IRAS
10:44:54.18 -00:44:57.8 15.2mag 169P/NEAT
03:21:51.46 +03:18:41.6 15.0mag 220P/McNaught
06:16:38.39 +47:28:52.9 15.5mag 260P/McNaught
07:42:23.43 +25:20:34.4 17.7mag 266P/Christensen
-rw-r--r-- 1 apache apache 1.8K Oct 21 23:20 comets.txt
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
22:14:03.37 -45:07:18.60  ASASSN-26fm   VIZIER
01:57:48.19 -33:14:42.30  SN 2026aedl   -------
18:05:22.06 +17:52:41.00  ASASSN-26fn  2026-10-11.74 15.23
21:50:55.86 -02:51:49.30  SN2026acyb  2026-10-9.85 16.83
03:40:34.04 +02:31:56.70  SN2026acvp  2026-10-9.95 17.75
04:33:25.91 -13:41:04.20  SN2026adhl   -------
09:20:05.05 +27:03:12.40  SN2026aeif   -------
02:58:07.77 -65:18:52.90  ASASSN-26fl   VIZIER
02:49:03.98 -49:55:57.00  SN 2026adfy  2026-10-4.88 16.61
22:03:46.31 -11:07:57.70  AT2026adgn  2026-10-4.28 -2.56
15:03:12.98 +49:51:05.40  ASASSN-26fj   VIZIER
08:07:27.96 -65:51:03.90  ASASSN-26fi  2026-10-1.36 15.82
21:02:34.66 +23:57:26.20  ASASSN-26fh  2026-10-1.27 15.94
20:00:16.62 +03:26:29.90  AT2026adfv   -------
00:08:42.74 -32:33:16.50  SN2026abhc   -------
21:02:30.26 -19:27:41.80  SN2026acxa   -------
04:39:17.45 -28:06:12.40  ASASSN-26fg   VIZIER
05:25:07.80 +04:38:32.40  SN2026aajs   -------
19:56:12.67 +08:25:27.70  AT2026acgs   -------
00:02:34.06 +52:55:18.90  ASASSN-26ff  2026-09-16.38 15.41
23:44:33.18 +17:46:12.20  SN2026yjv   -------
16:21:12.24 +57:37:51.30  SN 2026aafh   -------
23:36:00.27 -19:28:18.00  SN 2026aaks  2026-09-14.44 16.89
16:35:24.86 -05:32:38.20  SN2026aasi   -------
16:46:08.71 +37:25:21.80  SN2026aafk  2026-09-13.25 17.4
23:48:37.86 +50:25:24.60  SN2026aafs   -------
21:20:27.02 +02:10:42.50  SN2026aagh   -------
08:02:26.85 -24:37:44.10  ASASSN-26fe  2026-09-13.34 13.67
02:29:34.91 +23:06:56.30  SN2026aars   -------
02:47:25.52 -32:58:34.50  SN 2026znh   -------
04:59:14.53 -83:27:58.80  ASASSN-26fd  2026-09-9.11 17.27
17:52:06.79 -23:43:20.70  ASASSN-26fc   VIZIER
03:52:53.26 -14:19:28.70  SN 2026zfw   -------
01:53:26.46 +10:07:25.10  SN2026aacj   -------
20:04:34.47 +62:38:38.10  SN2026zji  2026-09-7.14 15.87
22:37:05.64 +34:24:35.00  SN2026aaiv   -------
22:24:21.29 -10:25:31.60  ASASSN-26fb  2026-09-5.3 13.93
00:44:54.28 +41:33:10.50  AT2026aabo  2026-09-3.29 15.02
00:52:12.40 -58:22:08.60  SN 2026zhl  2026-08-31.92 16.51
19:53:57.87 +61:00:19.70  ASASSN-26fa   VIZIER
00:21:50.96 -09:29:16.30  AT2026zwp  2026-08-31.41 15.59
19:45:06.20 +18:22:48.80  V488  2026-08-30.13 9.37
18:25:12.74 -22:25:28.60  V8055   -------
17:17:45.96 +64:31:40.10  ASASSN-26ez   VIZIER
19:02:47.09 +58:08:21.00  AT2026zwo   -------
04:20:07.58 -42:26:59.90  AT2026zjy   -------
03:08:18.02 +11:54:46.50  SN2026ymb  2026-08-23.4 16.44
20:22:32.48 -50:45:14.30  SN2026yid   -------
04:24:28.39 -56:20:21.60  ASASSN-26ey  2026-08-20.02 15.55
16:46:37.81 -63:14:59.80  ASASSN-26ex  2026-08-18.78 3.63
21:28:47.85 +20:31:03.60  SN 2026sfn   -------
23:01:28.67 -61:00:39.00  SN 2026yib   -------
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   VIZIER
13:53:14.21 +00:26:52.00  SN 2026wkv   -------
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
23:47:50.89 +49:28:51.30  SN2026wjs  2026-08-9.24 17.09
16:03:20.92 +17:43:23.70  AT2026xau   -------
01:10:22.05 -09:34:08.50  SN2026weo   -------
00:56:54.35 -35:55:29.40  AT2026wdy   -------
22:08:07.63 -53:03:58.90  AT2026wek   -------
14:51:51.34 +66:13:24.60  ASASSN-26ev   VIZIER
12:06:50.79 -36:16:06.20  SN2026wgm   -------
16:56:36.90 -59:29:26.00  ASASSN-26er   VIZIER
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   VIZIER
12:18:47.98 -30:48:47.50  ASASSN-26et   VIZIER
13:00:47.82 +15:42:17.60  SN2026uwk   -------
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   VIZIER
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   VIZIER
04:50:01.03 -02:22:33.80  ASASSN-26ej   VIZIER
18:34:55.28 -31:41:00.90  ASASSN-26ek   VIZIER
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   VIZIER
10:00:46.44 -32:36:31.10  AT 2023mhb   -------
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   VIZIER
19:33:53.06 -07:15:00.80  ASASSN-22le   -------
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   -------
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   -------
20:21:30.50 -32:03:40.10  ASASSN-26ee   VIZIER
19:37:44.09 -05:35:42.80  AT2026ryu   -------
11:06:55.46 -04:07:04.50  AT2026qqg   -------
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   VIZIER
19:59:01.43 -32:07:34.30  ASASSN-26eb   VIZIER
18:46:50.35 -57:44:13.20  SN 2026qqp   -------
19:17:31.69 -39:55:29.90  ASASSN-26dz   VIZIER
-rw-r--r-- 1 apache apache 9.3K Oct 21 23:20 asassn_transients_list.txt
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
19:45:06.48 +18:22:42.2  PNV J19450648+1822422  2026-08-25.1278  9.0mag
00:42:54.65 +41:22:59.3  PNV J00425465+4122593  2026-08-25.4712  18.9mag
00:42:50.38 +41:18:58.76  PNV J00425038+4118587  2026-09-04.1512  18.2mag
00:42:12.76 +41:16:28.4  PNV J00421276+4116284  2026-09-10.9176  18.67Cmag
17:52:06.80 -23:43:20.7  TCP J17520680-2343207  2026-09-08.7896  12.6mag
00:42:40.94 +41:15:37.1  PNV J00424094+4115371  2026-09-17.8925  18.3mag
08:49:20.13 -09:19:15.8  TCP J08492013-0919158  2026-09-18.4698  13.3mag
00:42:13.93 +41:16:35.6  PNV J00421393+4116356  2026-09-22.6597  19.66Cmag
18:14:01.58 +15:13:55.5  TCP J18140158+1513555  2026-09-24.4645  14.1mag
00:42:36.61 +41:13:50.5  TCP J00423661+4113505  2026-09-29.7462  17.4mag
22:03:46.29 -11:07:57.8  TCP J22034629-1107578  2026-09-29.7438  14.51Cmag
22:05:02.06 +20:49:01.2  TCP J22050206+2049012  2026-10-03.5715  17.13Cmag
00:38:15.01 +41:14:47.2  TCP J00381501+4114472  2026-10-08.5978  17.72Cmag
01:06:05.83 +09:51:20.4  TCP J01060583+0951204  2026-10-10.8543  14.54Cmag
17:54:18.76 -27:36:36.2  TCP J17541876-2736362  2026-10-12.3993  10.8mag
09:56:00.79 +69:06:15.2  PNV J09560079+6906152  2026-10-14.9274  19.38Cmag
00:43:30.83 +41:26:55.3  PNV J00433083+4126553  2026-10-17.5651  18.61Cmag
04:57:32.08 +30:15:41.6  TCP J04573208+3015416  2026-10-17.7818  18.21Cmag
05:21:07.64 +23:38:21.3  TCP J05210764+2338213  2026-10-18.4020  10.3mag
05:34:11.01 +28:45:30.5  TCP J05341101+2845305  2026-10-18.3604  16.6mag
-rw-r--r-- 1 apache apache 191K Oct 21 23:20 tocp_transients_list.txt
############################################################
Truncated list of recent TNS transients from https://www.wis-tns.org/ :
01:10:49.770 +02:38:30.67  AT 2026aebt  2026-09-30.66 21.23
01:05:19.330 -00:11:32.74  AT 2026aebs  2026-09-30.65 21.65
01:35:09.144 -01:03:49.94  AT 2026aebr  2026-09-20.83 23.01
01:02:37.840 +04:28:02.19  AT 2026aebq  2026-09-20.82 22.78
01:28:12.190 +05:17:51.61  AT 2026aebp  2026-09-13.85 22.41
22:47:15.050 +03:42:02.27  AT 2026aebo  2026-09-21.73 22.04
23:45:08.040 +01:05:55.47  AT 2026aebn  2026-09-30.76 21.95
23:25:27.380 -00:44:47.15  AT 2026aebm  2026-09-15.74 22.29
00:43:52.136 -04:09:35.26  SN 2026aebl  2026-09-20.33 20.4818
23:57:05.580 +47:22:43.66  AT 2026aebk  2026-10-02.25 20.1485
21:45:41.050 -07:03:45.02  SN 2026aebj  2026-10-02.17 19.9213
01:27:33.024 +84:50:25.70  AT 2026aebi  2026-10-03.20 19.7953
00:26:39.140 -03:17:00.58  AT 2026aebh  2026-10-02.27 20.1095
21:28:41.378 +03:57:48.01  SN 2026aebg  2026-10-01.26 20.3099
00:57:54.471 -27:53:53.62  AT 2026aebf  2026-09-30.33 19.3916
22:47:58.650 +03:51:05.09  AT 2026aebe  2026-09-30.23 20.1921
23:27:00.498 -10:43:55.07  AT 2026aebd  2026-10-01.39 20.03
23:40:24.092 -09:27:20.60  AT 2026aebc  2026-10-01.39 20.07
00:56:09.593 -01:35:47.87  AT 2026aebb  2026-10-01.40 20.95
01:31:39.979 -01:39:43.87  AT 2026aeba  2026-10-01.46 21.45
-rw-r--r-- 1 apache apache 89K Oct 21 23:20 tns_transients_list.txt

=== Transient Factory Profiling ===
Started: Wed Oct 21 23:19:42 CDT 2026
=======================================
TIMING SExtractor: 3 seconds
TIMING matching_and_photometry: 0 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 0 seconds
    VAST_RUN_default.sex.telephoto_lens_onlybrightstars_v1: 3s (0.05 min)
    WCS_CACHE_SETUP: 0s (0.00 min)
    WCS_CALIBRATION_AND_EPHEMERIS: 32s (0.53 min)
    PLATE_VERIFY_AND_POINTING: 0s (0.00 min)
    UCAC5_PLATE_SOLVING: 0s (0.00 min)
    MAGNITUDE_CALIBRATION: 14s (0.23 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: 1s (0.02 min)
    WAIT_FOR_UCAC5: 2s (0.03 min)
    WCS_IMAGE_ARCHIVING: 0s (0.00 min)
    HTML_REPORT: 0s (0.00 min)
  SE_CONFIG_default.sex.telephoto_lens_onlybrightstars_v1: 52s (0.87 min)
TIMING SExtractor: 5 seconds
TIMING matching_and_photometry: 0 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 1 seconds
    VAST_RUN_default.sex.telephoto_lens_vSTL: 7s (0.12 min)
    WCS_CACHE_SETUP: 0s (0.00 min)
    WCS_CALIBRATION_AND_EPHEMERIS: 1s (0.02 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: 1s (0.02 min)
      FILTER_FRAME_EDGE: 0s (0.00 min)
      FILTER_SECOND_EPOCH_VERIFY: 0s (0.00 min)
    CANDIDATE_FILTERING_TOTAL: 1s (0.02 min)
    EXCLUSION_LIST_PREPARATION: 0s (0.00 min)
    SEEING_AND_LIMITING_MAG: 0s (0.00 min)
    WAIT_FOR_UCAC5: 0s (0.00 min)
    WCS_IMAGE_ARCHIVING: 0s (0.00 min)
    HTML_REPORT: 1s (0.02 min)
  SE_CONFIG_default.sex.telephoto_lens_vSTL: 20s (0.33 min)
FIELD_PsA-04-Q2b1x1: 89s (1.48 min)
=======================================
TOTAL_RUNTIME: 91s (1.52 min)
Finished: Wed Oct 21 23:21:13 CDT 2026