FITS images used in this processing run:

Field Cap-01-Q2b1x1 reference image: Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits
Field Cap-01-Q2b1x1 reference image: Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits
Field Cap-01-Q2b1x1 second-epoch image: Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
Field Cap-01-Q2b1x1 second-epoch image: Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits

***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################
***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################

######## Processing parameters ########
AAVSO_COMMENT_STRING= NMW-TexasTech Camera-2 135mm f/2.2 telephoto lens + QHY600M CMOS
ASTCHECK_ASTEROID_SEARCH_RADIUS_ARCSEC= 
BAD_REGION_FILE= /var/www/nmw_calibration/TTUQ2b1x1/TTUQ2_bad_region.lst
CAMERA_SETTINGS= TTUQ2b1x1
CHECK_POINTING_ACCURACY= yes
DARK_FRAMES_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ2b1x1/darks
EXCLUSION_LIST= ../exclusion_list_TTUQ2.txt
FILTER_BAD_IMG__MAX_APERTURE_STAR_SIZE_PIX= 12.5
FILTER_BAD_IMG__MAX_ELONGATION_AminusB_PIX= 0.55
FILTER_BAD_IMG__MIN_APERTURE_STAR_SIZE_PIX= 2.0
FILTER_BRIGHT_MAG_CUTOFF_TRANSIENT_SEARCH= -5
FILTER_FAINT_MAG_CUTOFF_TRANSIENT_SEARCH= 15.5
FLAT_FIELD_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ2b1x1/flats
FRAME_EDGE_OFFSET_PIX= 600
GAIA_BAND_FOR_CATALOGED_SOURCE_CHECK= 
MAX_NEW_TO_REF_MEAN_IMG_VALUE_RATIO= 100
DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK= yes
MAX_NEW_IMG_MEAN_VALUE= 25000
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS= 0.18
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS_SOFT_LIMIT= 0.12
MPC_CODE= V36
NMW_CALIBRATION= /var/www/nmw_calibration
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_HARD_LIMIT= 10000
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_SOFT_LIMIT= 8000
OMP_NUM_THREADS= 3
ONLINE_MPCHECKER_BUTTON_ASTEROID_SEARCH_RADIUS_ARCMIN= 
PHOTOMETRIC_CALIBRATION= 
REQUIRE_PIX_SHIFT_BETWEEN_IMAGES_FOR_TRANSIENT_CANDIDATES= yes
SEXTRACTOR_CONFIG_BRIGHTSTARPASS= default.sex.telephoto_lens_onlybrightstars_v1
SEXTRACTOR_CONFIG_FILES= default.sex.telephoto_lens_onlybrightstars_v1 default.sex.telephoto_lens_vSTL
STARMATCH_RADIUS_PIX= 5
SYSREM_ITERATIONS= 0
TELESCOP= 
TELESCOP_NAME_KNOWN_TO_VaST_FOR_FOV_DETERMINATION= 
UCAC5_PLATESOLVE_ITERATIONS= 2
FPACK_FULLY_CALIBRATED_IMAGE= no
#######################################
HOSTNAME= tau
USER= 
HOME= 
#######################################
SExtractor catalog cache: enabled, directory /data_ssd/NMW-TexasTech/vast_sextractor_cache
Reference image directory is set to /data_ssd/NMW-TexasTech/reference_imgs
VIZIER_SITE=vizier.cds.unistra.fr
GAIA_DR2_CLIENT=vizquery (lib/vizquery -> VizieR vizier.cds.unistra.fr)
INFO: MAKE_PNG_PLOTS is set to yes
FITS_FILE_EXT=fits
CALIBRATION_STATUS_PREFIX=
Fields in the data directory: 
Cap-01-Q2b1x1
#######################################
########### Starting Cap-01-Q2b1x1 ###########
Processing Cap-01-Q2b1x1
server tau has sufficient free disk space available: 253502 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 253502 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.png' -> 'transient_report/Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits_preview.png'

Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits


renamed 'Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.png' -> 'transient_report/Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits_preview.png'

Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.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= 760.1159
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 571.7854
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 2093.3142
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 541.1102
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 2041.0063
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 531.1448
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 2.75394
INFO:                  SECOND_EPOCH__SD_ratio= 0.019
INFO: the new-to-reference mean image value ratio check is disabled (DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK=yes) - expected with a background-subtracted reference image
----------------------------------------------
Calibration settings: DARK_FRAMES_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ2b1x1/darks FLAT_FIELD_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ2b1x1/flats
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     25.2099990844727 / [degC] Focuser temperature
AMBTEMP =                 26.0 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.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= '2026-09-06T01:57:00.1126533' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-09-06T06:57:00.1126533' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61289.2895846297 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-09-06T06:57:10.0143122' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61289.2896992359 / 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      =     308.568182668609 / [deg] RA of telescope" status=0
Record 32: "DEC     =    -9.99957669624145 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     32.8555555555556 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     227.328333333333 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     1.83902395547691 / 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  = 'Cap-01'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '20 34 17'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '-10 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  =                20478 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20478 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     25.2099990844727 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     25.2099990844727 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 14.4 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 49.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               900.41 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 26.0 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                341.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             9.400752 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             7.600608 / [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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/d_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits :)

Spent 0.487053 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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/d_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     25.2099990844727 / [degC] Focuser temperature
AMBTEMP =                 26.0 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.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= '2026-09-06T01:57:50.0456083' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-09-06T06:57:50.0456083' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61289.2901625577 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-09-06T06:57:59.9526560' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61289.2902772222 / 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      =     308.568182661171 / [deg] RA of telescope" status=0
Record 32: "DEC     =    -9.99957670114312 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =              32.7275 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     227.520555555556 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     1.84537292464699 / 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  = 'Cap-01'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '20 34 17'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '-10 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  =                20478 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20478 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     25.2099990844727 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     25.2099990844727 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 14.4 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 49.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               900.41 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 26.0 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                341.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             9.400752 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             7.600608 / [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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/d_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits :)

Spent 0.580661 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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/d_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
Previews of the CALIBRATED second-epoch images:


fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits



fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.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/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
  
Last  image: 2461289.78970037 06.09.2026 06:57:00.112 UTC
WARNING: VaST exited with code 1 on the field Cap-01-Q2b1x1 as too few input images were matched to the reference image - wrong pointing? clouds? very bad focus?
Blind plate solve of the unmatched second-epoch image fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits to check the telescope pointing
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.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_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
WCS_IMAGE_NAME=wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
Field of view for the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits was not set. Trying to guess...
The guess is  605 arcmin.
No image with WCS calibration found for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits .... Determining astrometry method...
Using the local copy of Astrometry.net software...
Choosing aperture...
Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
/data_ssd/NMW-TexasTech/workdir/vast_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/lib/make_outxyls_for_astrometric_calibration found 2141 high-SNR stars for plate solving
 
This service uses tools provided by Astrometry.net.
For more information visit http://astrometry.net/ 

######### Trying to solve plate assuming 605' field of view #########
 /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
Using the local copy of Astrometry.net code
IMAGE_SIZE= --width 9576 --height 6388    SCALE_LOW=544.5 SCALE_HIGH=3025.0
Using solve-field binary
/usr/local/astrometry/bin/solve-field
Reading input file 1 of 1: "out2437616.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out2437616.axy"...
Field 1 did not solve (index index-4119.fits, field objects 1-10).
Field 1 did not solve (index index-4118.fits, field objects 1-10).
Field 1 did not solve (index index-4117.fits, field objects 1-10).
  log-odds ratio 200.01 (7.30167e+86), 23 match, 0 conflict, 153 distractors, 26 index.
  RA,Dec = (308.579,-9.99408), pixel scale 5.94994 arcsec/pix.
  Hit/miss:   Hit/miss: +++++-+---+-++-+-----+------------++-+-++--------------+-+---------------------+---+-----------+----
Field 1: solved with index index-4116.fits.
Field 1 solved: writing to file ./out2437616.solved to indicate this.
Field: out2437616.xyls
Field center: (RA,Dec) = (308.579560, -9.997705) deg.
Field center: (RA H:M:S, Dec D:M:S) = (20:34:19.094, -09:59:51.739).
Field size: 15.7187 x 10.5279 degrees
Field rotation angle: up is 179.909 degrees E of N
Field parity: neg

Inserting WCS header...  '/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits' -> 'fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits'
WCS keywords and Astrometry.net provenance markers have been successfully stripped from all HDUs in the file.
-rw-r--r-- 1 apache apache 117M Sep  6 02:02 fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
-rw-r--r-- 1 apache apache  12K Sep  6 02:02 out2437616.wcs
Inserting WCS header (1st iteration local)...  Opening FITS image file fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits for reading...  done!
Creating new image file (wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits)...  done!
done!
All done!
done
The WCS header appears to be added with no errors in /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits (fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits)
Keyword does not exist
Keyword has been changed to:
VAST001 = 'wcs_image_calibration.sh' / VaST script name
Keyword does not exist
Keyword has been changed to:
VAST002 = 'local   '           / ASTROMETRYNET_LOCAL_OR_REMOTE
Keyword does not exist
Keyword has been changed to:
VAST003 = 'local   '           / PLATE_SOLVE_SERVER
Keyword does not exist
Keyword has been changed to:
VAST004 = 'iteration01'        / astrometry.net run
Reading input file 1 of 1: "out2437616.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out2437616.axy"...
Only searching for solutions within 15.6317 degrees of RA,Dec (308.579,-9.99853)
  log-odds ratio 200.01 (7.30167e+86), 23 match, 0 conflict, 153 distractors, 26 index.
  RA,Dec = (308.579,-9.99408), pixel scale 5.94994 arcsec/pix.
  Hit/miss:   Hit/miss: +++++-+---+-++-+-----+------------++-+-++--------------+-+---------------------+---+-----------+----
Field 1: solved with index index-4116.fits.
Field 1 solved: writing to file ./out2437616.solved to indicate this.
Field: out2437616.xyls
Field center: (RA,Dec) = (308.573003, -9.999214) deg.
Field center: (RA H:M:S, Dec D:M:S) = (20:34:17.521, -09:59:57.169).
Field size: 15.7056 x 10.5322 degrees
Field rotation angle: up is 179.885 degrees E of N
Field parity: neg

WCS keywords and Astrometry.net provenance markers have been successfully stripped from all HDUs in the file.
-rw-r--r-- 1 apache apache 117M Sep  6 02:02 fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
-rw-r--r-- 1 apache apache  12K Sep  6 02:02 out2437616.wcs
Inserting WCS header (2nd iteration local)...  Opening FITS image file fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits for reading...  done!
Creating new image file (wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits)...  done!
done!
All done!
The WCS header appears to be added with no errors.
Keyword does not exist
Keyword has been changed to:
VAST001 = 'wcs_image_calibration.sh' / VaST script name
Keyword does not exist
Keyword has been changed to:
VAST002 = 'local   '           / ASTROMETRYNET_LOCAL_OR_REMOTE
Keyword does not exist
Keyword has been changed to:
VAST003 = 'local   '           / PLATE_SOLVE_SERVER
Keyword does not exist
Keyword has been changed to:
VAST004 = 'iteration02'        / astrometry.net run
The field of view is large: we'll try to run Astromety.net code on the image itself rather than a star list
Reading input file "wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits"...
Found an existing WCS header, will try to verify it.
Extracting sources...
simplexy: found 15255 sources.
Solving...
Reading file "./wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.axy"...
Verifying WCS using indices with quads of size [63.4407, 951.014] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
  log-odds ratio 109.08 (2.36079e+47), 11 match, 0 conflict, 110 distractors, 11 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: --+++--++----+--------------+---------------------------------------------------------------------+-
 --> log-odds 109.08
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 275.614 (4.9869e+119), 26 match, 0 conflict, 237 distractors, 26 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: --+++--+++---+------+--+----+-+--------++---+---+--------------+-------+---------+----------------++
 --> log-odds 275.614
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 540.338 (4.63224e+234), 49 match, 0 conflict, 214 distractors, 49 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++-+++--++---++-+--+--+++-+--+---+-++---+---+-+--------+---++--+---+++-------+--+--+--+-------++
 --> log-odds 540.338
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 1023.48 (inf), 95 match, 0 conflict, 369 distractors, 95 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++-++-++++-+++++-+++++--+--+++++--++-+-+++++-++-+-++--+++-+-+++++++-+---+-+++-++++++-----++
 --> log-odds 1023.48
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 1946.42 (inf), 195 match, 0 conflict, 1996 distractors, 196 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++--++++++++++++-+++++++-++-++++-++++++++++++++++++++-+++++++++++--++++
 --> log-odds 1946.42
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 3442.79 (inf), 367 match, 0 conflict, 1904 distractors, 372 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++-+++++++++++++-+++++++++++++++++++++++++++++++++++++++++++++++++-++++
 --> log-odds 3442.79
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 6241.73 (inf), 713 match, 1 conflict, 3717 distractors, 717 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++-+++++++++++++-+++++++++++++++++++++++++++++++++++++++++++++++++-++++
 --> log-odds 6241.73
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 11477.3 (inf), 1420 match, 1 conflict, 4830 distractors, 1437 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++-+++++++++++++-+++++++++++++++++++++++++++++++++++++++++++++++++-++++
 --> log-odds 11477.3
Verifying WCS using indices with quads of size [63.4407, 951.014] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
  log-odds ratio 109.08 (2.36079e+47), 11 match, 0 conflict, 110 distractors, 11 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: --+++--++----+--------------+---------------------------------------------------------------------+-
 --> log-odds 109.08
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 275.614 (4.9869e+119), 26 match, 0 conflict, 237 distractors, 26 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: --+++--+++---+------+--+----+-+--------++---+---+--------------+-------+---------+----------------++
 --> log-odds 275.614
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 540.338 (4.63224e+234), 49 match, 0 conflict, 214 distractors, 49 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++-+++--++---++-+--+--+++-+--+---+-++---+---+-+--------+---++--+---+++-------+--+--+--+-------++
 --> log-odds 540.338
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 1023.48 (inf), 95 match, 0 conflict, 369 distractors, 95 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++-++-++++-+++++-+++++--+--+++++--++-+-+++++-++-+-++--+++-+-+++++++-+---+-+++-++++++-----++
 --> log-odds 1023.48
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 1946.42 (inf), 195 match, 0 conflict, 1996 distractors, 196 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++--++++++++++++-+++++++-++-++++-++++++++++++++++++++-+++++++++++--++++
 --> log-odds 1946.42
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 3442.79 (inf), 367 match, 0 conflict, 1904 distractors, 372 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++-+++++++++++++-+++++++++++++++++++++++++++++++++++++++++++++++++-++++
 --> log-odds 3442.79
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 6241.73 (inf), 713 match, 1 conflict, 3717 distractors, 717 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++-+++++++++++++-+++++++++++++++++++++++++++++++++++++++++++++++++-++++
 --> log-odds 6241.73
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 11477.3 (inf), 1420 match, 1 conflict, 4830 distractors, 1437 index.
  RA,Dec = (308.574,-9.99838), pixel scale 5.95874 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++-+++++++++++++-+++++++++++++++++++++++++++++++++++++++++++++++++-++++
 --> log-odds 11477.3
Got 16 solutions.
Field: wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
Field center: (RA,Dec) = (308.573925, -9.998642) deg.
Field center: (RA H:M:S, Dec D:M:S) = (20:34:17.742, -09:59:55.110).
Field size: 15.7055 x 10.5309 degrees
Field rotation angle: up is 179.884 degrees E of N
Field parity: neg
Creating new FITS file "./wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.new"...

renamed 'wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.new' -> 'wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits'
Checking if the catalog wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits.wcscat corresponding to the image wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits alredy exist and is non-empty...
Catalog wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits.wcscat corresponding to the image wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits was not found.
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
verification OK: wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
Generating wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits.wcscat from image00003.cat
Catalog wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits.wcscat corresponding to the image wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits created.
verification OK: wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
verification OK: wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
Image size: 937.1'x624.1'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.86"/pix along the Y axis
Image center: 20:34:17.541 -09:59:58.10 J2000 4789.000 3195.000 

 ### Converting SExtractor-derived pixel positions to celestial coordinates using xy2sky from WCSTools ###
 ### Converted positions of 2197 stars ###
'wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits.wcscat' -> 'vast_debug_catalog_before_xy2sky_correction.cat.log'
'/data_ssd/NMW-TexasTech/workdir/vast_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/correct_sextractor_wcs_catalog_usingxy2sky2476029.tmp' -> 'vast_debug_catalog_after_xy2sky_correction.cat.log'
The plate-solved (WCS-calibrated) image is saved to wcs_fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
###################################
# Check the image center offset between the reference and the blindly solved unmatched second-epoch image (pointing accuracy)
Reference image center 20:34:16.286 -09:58:34.63
Second-epoch image center 20:34:17.541 -09:59:58.10
Angular distance between the image centers 0.0238 deg.
###################################
The second-epoch image center is consistent with the reference image center (offset 0.0238 deg.) - the star matching failure is probably not a pointing problem
____ VaST output ____

--==VaST 1.0rc90==--

Parsing command line arguments...
opt 'F': Will NOT create flag images for SExtractor
opt '5': 5.000000 pix is the new fixed star matching radius!
opt 'b': Using 500 reference stars for image matching!
opt '3': Will try to select best aperture for each source!
opt 'y': 0 SysRem iterations will be conducted!
opt 't 4': robust linear magnitude calibration (vary zero-point and slope)
opt 'x': 99 is the maximum acceptable SExtractor flag!
WARNING: disabling the mag-size filter in order not to reject blended stars.
opt 'u': Stick with UTC time system, no conversion to TT will be done!
opt 'f': Run ./find_candidates manually!
opt 'k': "JD" keyword in FITS image header will be ignored!
INFO from vast_remove_directory(): Could not open directory: symlinks_to_images
INFO from vast_remove_directory(): Could not open directory: converted_images
INFO from vast_remove_directory(): Could not open directory: unpacked_images

Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits is already a symlink and we do not allow symlinks on symlinks
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits is already a symlink and we do not allow symlinks on symlinks

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi)...  OK
Found a system-wide installation of SExtractor
Cleaning old outNNNNN.dat files.
Done with cleaning!

 VaST was started with the following command line: 
./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits 


Preparing to process 4 input FITS images...


######## Forcing special settings for the transient detection ########
transient search mode: disabling the mag-size filter as it should be switched off when running a transient search!
transient search mode: disabling the bad image filter as it will not help during the transient search!
transient search mode: will not try to gues image saturation limit
transient search mode: no UTC-to-TT time system conversion will be performed!!!
transient search mode: setting the maximum acceptable SExtractor flag to 3
transient search mode: disabling rejectin of images with elliptical stars
transient search mode: not discarding large sources
################
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).
Setting the fixed star match radius of 5.00 pix
We have 4 images to process.
SExtractor catalog cache: restored Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits catalog from cache
SExtractor catalog cache: restored Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits catalog from cache
Running SExtractor in 3 parallel threads...
Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
The above guess is based on the non-default gain value specified in default.sex by user
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).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
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).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 5.9,5.9,5.3,6.5,7.1,7.7 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.0,6.0,5.4,6.6,7.2,7.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits


Done with SExtractor!

TIMING SExtractor: 2 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-07-20T07:49:06.1619257
Setting observation time using DATE-OBS keyword: 2026-07-20T07:49:06.1619257

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-07-20T07:49:06.161
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits
Exposure 20 sec, 20.07.2026 07:49:06.161 UTC = JD(UTC) 2461241.82588149 mid. exp.
The reference image star  8683.118    18.308 is rejected, see bad_region.lst
The reference image star  8914.451    14.816 is rejected, see bad_region.lst
The reference image star  7999.515     9.417 is rejected, see bad_region.lst
The reference image star  7671.822     7.414 is rejected, see bad_region.lst
The reference image star  9079.632     7.404 is rejected, see bad_region.lst
The reference image star  9145.002     5.066 is rejected, see bad_region.lst
The reference image star  8382.371     6.089 is rejected, see bad_region.lst
The reference image star  7544.224     5.185 is rejected, see bad_region.lst
The reference image star  7586.707    22.500 is rejected, see bad_region.lst
The reference image star  9392.168    18.269 is rejected, see bad_region.lst
Excluding more reference image stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 10844, (10844 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 3565
 * rejected close to frame edge: 41
 * rejected as being too small (<1.6 pix): 0
 * rejected as being too large (>6.2 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 26
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.76
Detection limit from the magnitude-SNR relation= -7.8  (5.0 sigma detection)
The simple faintest star detection limit= -9.8
80 percent brightest stars detection limit= -10.5
Selected detection limit= -10.5
Final detection limit= -10.5 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.06.2 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 28
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
    10887 * detected, using  501/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.010747, number_of_ambiguous_matches=117 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=10217 inliers=10217 rms 0.29 -> 0.28 pix, max corner correction 0.3 pix] fraction_of_ambiguous_matches= 0.004868, number_of_ambiguous_matches=53 
10217 * matched, [CVPOLY iter 2: order=1 pairs=10217 inliers=10217 rms 0.21 -> 0.21 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.003031, number_of_ambiguous_matches=33 
10213 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=10213 inliers=10213 rms 0.08 -> 0.08 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.001102, number_of_ambiguous_matches=12 
10213 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.001
    10887 stars detected, 10213 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 9672, N_manually_selected_comparison_stars = 0
Using 9672 stars for magnitude calibration (before filtering).
Iteratively removing outliers from the linear mag-mag relation (unweighted fit)...
After removing outliers in (X,Y,dm) plane, we are left with 9672 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00000*X_pix -0.00000*Y_pix -0.00084
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 9671 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.76
    11518 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  203140 kB used, 237296 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-09-06T06:57:00.1126533
Setting observation time using DATE-OBS keyword: 2026-09-06T06:57:00.1126533

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-06T06:57:00.112
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
The star  8349.528    11.015 is rejected, see bad_region.lst
The star  8819.901    21.085 is rejected, see bad_region.lst
The star  7850.788    65.747 is rejected, see bad_region.lst
The star  7919.187    67.521 is rejected, see bad_region.lst
The star  7499.018   107.545 is rejected, see bad_region.lst
The star  8159.301   108.135 is rejected, see bad_region.lst
The star  7581.734   130.174 is rejected, see bad_region.lst
The star  8535.308   134.539 is rejected, see bad_region.lst
The star  9365.851   144.410 is rejected, see bad_region.lst
The star  9155.124   148.551 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 1903
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 285
 * rejected close to frame edge: 4
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>6.0 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 5
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     1903 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000087, number_of_ambiguous_matches=1 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=1828 inliers=1828 rms 1.02 -> 0.11 pix, max corner correction 4.1 pix] fraction_of_ambiguous_matches= 0.000087, number_of_ambiguous_matches=1 
1828 * matched, [CVPOLY iter 2: order=1 pairs=1828 inliers=1828 rms 0.11 -> 0.11 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000087, number_of_ambiguous_matches=1 
1828 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=1828 inliers=1828 rms 0.11 -> 0.11 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000087, number_of_ambiguous_matches=1 
1828 * matched (3rd iteration). Success!
  rotation [degrees] =   3.789
     1903 stars detected,  1828 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1540, N_manually_selected_comparison_stars = 0
Using 1540 stars for magnitude calibration (before filtering).
Iteratively removing outliers from the linear mag-mag relation (unweighted fit)...
After removing outliers in (X,Y,dm) plane, we are left with 1344 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00012*X_pix +0.00013*Y_pix -0.60793
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 1344 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.09
 ERROR!!! Magnitude calibration failure. Dropping image. 
    11518 objects stored in memory (1000000 max.)
memory:  202248 kB used, 237296 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-09-06T06:57:50.0456083
Setting observation time using DATE-OBS keyword: 2026-09-06T06:57:50.0456083

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-06T06:57:50.045
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
The star  8818.720    14.659 is rejected, see bad_region.lst
The star  8348.168     4.533 is rejected, see bad_region.lst
The star  7849.671    59.249 is rejected, see bad_region.lst
The star  7917.928    61.128 is rejected, see bad_region.lst
The star  7497.687   101.116 is rejected, see bad_region.lst
The star  8158.044   101.635 is rejected, see bad_region.lst
The star  7580.456   123.800 is rejected, see bad_region.lst
The star  8533.936   128.188 is rejected, see bad_region.lst
The star  9364.444   137.873 is rejected, see bad_region.lst
The star  9153.826   142.100 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 2051
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 367
 * rejected close to frame edge: 9
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>5.9 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 4
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     2051 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000174, number_of_ambiguous_matches=2 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=1977 inliers=1977 rms 1.14 -> 0.12 pix, max corner correction 4.3 pix] fraction_of_ambiguous_matches= 0.000174, number_of_ambiguous_matches=2 
1977 * matched, [CVPOLY iter 2: order=1 pairs=1977 inliers=1977 rms 0.12 -> 0.12 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000174, number_of_ambiguous_matches=2 
1977 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=1977 inliers=1977 rms 0.12 -> 0.12 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000174, number_of_ambiguous_matches=2 
1977 * matched (3rd iteration). Success!
  rotation [degrees] =   3.791
     2051 stars detected,  1977 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1692, N_manually_selected_comparison_stars = 0
Using 1692 stars for magnitude calibration (before filtering).
Iteratively removing outliers from the linear mag-mag relation (unweighted fit)...
After removing outliers in (X,Y,dm) plane, we are left with 1529 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00011*X_pix +0.00010*Y_pix -0.56315
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 1529 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.05
 ERROR!!! Magnitude calibration failure. Dropping image. 
    11518 objects stored in memory (1000000 max.)
memory:  202228 kB used, 237296 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 0 seconds
Done with measurements! =)

Total number of measurements 21731 (21731 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 0 seconds
The lightcurve files have been written, freeing up more memory...
Creating vast_image_details.log ... 

Writing summary file: vast_summary.log ...  OK
Selecting the best aperture for each source
Aperture with index 0 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for  2646 stars
Aperture with index 1 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for     0 stars
Aperture with index 2 (REFERENCE_APERTURE_DIAMETER -0.10*REFERENCE_APERTURE_DIAMETER) seems best for  2865 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  1150 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  1234 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  2318 stars

done!  =)
TIMING select_aperture: 1 seconds
Computing lightcurve statistics...  Will not compute variability indexes for objects having <1 points in lightcurve
You may disable this by commenting out the line '#define DROP_LIGHTCURVES_WITH_SMALL_NUMBER_OF_POINTS_FROM_ALL_PLOTS' in src/vast_limits.h an re-compiling VaST with 'make'

Computing, please wait a bit
.....................................................................................................
vast_lightcurve_statistics.log: 10125 objects, the longest string is 383 bytes.
Allocating memory for resorting the file.



----***** VaST processing WARNING *****----
You asked VaST to process 4 images, but only 1 were actually matched to the reference one.
Please investigate this!



**************************************************************
This error might be a bug, but it is far more likely that it is caused by 
inappropriate input data. A few simple things to check in the diagnostic
messages printed above (or the vast*.log files):
 * How many of the input images are matched?
 * Does the number of detected stars on each image look reasonable?
 * Do images have a sufficient overlap of at least about 20 percent?

You may run
 ./sextract_single_image /path/to/my/image/file.fit
to see how well VaST detects stars with the current SExtractor settings
(star detection settings can be changed in the default.sex configuration
file, see various examples in the VaST directory).

If you cannot identify the problem, please e-mail Kirill Sokolovsky 
Please try to describe the problem in details and, if possible, attach vast_summary.log
file and a few example images. If the images are too big to be sent by e-mail, please 
upload them through a web-form http://scan.sai.msu.ru/upload/
**************************************************************

Low percentage of matched images - we'll declare this an unsuccessful VaST run (exit code 1)
_____________________
ERROR running VaST on the field Cap-01-Q2b1x1 (less than 4 images processed)
exp_start= 20.07.2026 07:49:06.161  exp=   20.000  JD= 2461241.82588149  ap=  6.2  rotation=   0.000  *detected= 10844  *matched= 10844  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits
exp_start= 20.07.2026 07:49:56.389  exp=   20.000  JD= 2461241.82646284  ap=  6.2  rotation=  -0.001  *detected= 10887  *matched= 10213  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits
exp_start= 06.09.2026 06:57:00.112  exp=   20.000  JD= 2461289.78970037  ap=  6.0  rotation=   3.789  *detected=  1903  *matched=  1828  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
exp_start= 06.09.2026 06:57:50.045  exp=   20.000  JD= 2461289.79027830  ap=  5.9  rotation=   3.791  *detected=  2051  *matched=  1977  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
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/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
  
Last  image: 2461289.78970037 06.09.2026 06:57:00.112 UTC
WARNING: VaST exited with code 1 on the field Cap-01-Q2b1x1 as too few input images were matched to the reference image - wrong pointing? clouds? very bad focus?
____ VaST output ____

--==VaST 1.0rc90==--

Parsing command line arguments...
opt 'F': Will NOT create flag images for SExtractor
opt '5': 5.000000 pix is the new fixed star matching radius!
opt 'b': Using 500 reference stars for image matching!
opt '3': Will try to select best aperture for each source!
opt 'y': 0 SysRem iterations will be conducted!
opt 't 4': robust linear magnitude calibration (vary zero-point and slope)
opt 'x': 99 is the maximum acceptable SExtractor flag!
WARNING: disabling the mag-size filter in order not to reject blended stars.
opt 'u': Stick with UTC time system, no conversion to TT will be done!
opt 'f': Run ./find_candidates manually!
opt 'k': "JD" keyword in FITS image header will be ignored!
INFO from vast_remove_directory(): Could not open directory: symlinks_to_images
INFO from vast_remove_directory(): Could not open directory: converted_images
INFO from vast_remove_directory(): Could not open directory: unpacked_images

Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits is already a symlink and we do not allow symlinks on symlinks
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits is already a symlink and we do not allow symlinks on symlinks

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi)...  OK
Found a system-wide installation of SExtractor
Cleaning old outNNNNN.dat files.
Done with cleaning!

 VaST was started with the following command line: 
./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits 


Preparing to process 4 input FITS images...


######## Forcing special settings for the transient detection ########
transient search mode: disabling the mag-size filter as it should be switched off when running a transient search!
transient search mode: disabling the bad image filter as it will not help during the transient search!
transient search mode: will not try to gues image saturation limit
transient search mode: no UTC-to-TT time system conversion will be performed!!!
transient search mode: setting the maximum acceptable SExtractor flag to 3
transient search mode: disabling rejectin of images with elliptical stars
transient search mode: not discarding large sources
################
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).
Setting the fixed star match radius of 5.00 pix
We have 4 images to process.
SExtractor catalog cache: restored Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits catalog from cache
SExtractor catalog cache: restored Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits catalog from cache
Running SExtractor in 3 parallel threads...
Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
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)
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
The above guess is bExcluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
ased on the non-default gain value specified in default.sex by user
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).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
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).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.4,4.4,4.0,4.9,5.3,5.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.4,4.4,3.9,4.8,5.3,5.7 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits


Done with SExtractor!

TIMING SExtractor: 6 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-07-20T07:49:06.1619257
Setting observation time using DATE-OBS keyword: 2026-07-20T07:49:06.1619257

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-07-20T07:49:06.161
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits
Exposure 20 sec, 20.07.2026 07:49:06.161 UTC = JD(UTC) 2461241.82588149 mid. exp.
The reference image star  7988.884    58.699 is rejected, see bad_region.lst
The reference image star  8288.472    23.949 is rejected, see bad_region.lst
The reference image star  7586.700    22.500 is rejected, see bad_region.lst
The reference image star  8683.117    18.308 is rejected, see bad_region.lst
The reference image star  9392.176    18.266 is rejected, see bad_region.lst
The reference image star  8914.450    14.821 is rejected, see bad_region.lst
The reference image star  8464.752    16.007 is rejected, see bad_region.lst
The reference image star  8259.758    13.116 is rejected, see bad_region.lst
The reference image star  9223.191    11.333 is rejected, see bad_region.lst
The reference image star  8523.474    11.720 is rejected, see bad_region.lst
Excluding more reference image stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 72689, (72689 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 11
 * rejected inside rectangles defined in bad_region.lst: 22320
 * rejected close to frame edge: 288
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>5.0 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 118
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.48
Detection limit from the magnitude-SNR relation= -7.5  (5.0 sigma detection)
The simple faintest star detection limit= -6.8
80 percent brightest stars detection limit= -8.0
Selected detection limit= -8.0
Final detection limit= -8.0 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.05.0 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 112
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
    72837 * detected, using  501/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.017024, number_of_ambiguous_matches=1240 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=66823 inliers=66823 rms 0.39 -> 0.39 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.017011, number_of_ambiguous_matches=1239 
66825 * matched, [CVPOLY iter 2: order=1 pairs=66825 inliers=66825 rms 0.40 -> 0.40 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.017011, number_of_ambiguous_matches=1239 
66825 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=66825 inliers=66825 rms 0.40 -> 0.40 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.006920, number_of_ambiguous_matches=504 
66704 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.001
    72837 stars detected, 66704 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 61836, N_manually_selected_comparison_stars = 0
Using 61836 stars for magnitude calibration (before filtering).
Iteratively removing outliers from the linear mag-mag relation (unweighted fit)...
After removing outliers in (X,Y,dm) plane, we are left with 61832 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix +0.00000*Y_pix -0.00195
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 59332 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.48
    78822 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  258740 kB used, 293704 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-09-06T06:57:00.1126533
Setting observation time using DATE-OBS keyword: 2026-09-06T06:57:00.1126533

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-06T06:57:00.112
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
The star  8585.706    15.107 is rejected, see bad_region.lst
The star  7790.004    14.385 is rejected, see bad_region.lst
The star  8623.264    11.394 is rejected, see bad_region.lst
The star  8349.518    11.019 is rejected, see bad_region.lst
The star  9324.961    11.114 is rejected, see bad_region.lst
The star  7529.195     9.327 is rejected, see bad_region.lst
The star  8181.665     3.426 is rejected, see bad_region.lst
The star  8024.548     2.407 is rejected, see bad_region.lst
The star  9275.112     2.019 is rejected, see bad_region.lst
The star  8496.063     2.495 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 19529
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 2
 * rejected inside rectangles defined in bad_region.lst: 2078
 * rejected close to frame edge: 86
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 58
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
    19529 * detected, using  134/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000355, number_of_ambiguous_matches=28 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=18935 inliers=18935 rms 1.01 -> 0.22 pix, max corner correction 4.4 pix] fraction_of_ambiguous_matches= 0.000330, number_of_ambiguous_matches=26 
18936 * matched, [CVPOLY iter 2: order=1 pairs=18936 inliers=18936 rms 0.20 -> 0.20 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000330, number_of_ambiguous_matches=26 
18936 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=18936 inliers=18936 rms 0.20 -> 0.20 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000266, number_of_ambiguous_matches=21 
18934 * matched (3rd iteration). Success!
  rotation [degrees] =   3.789
    19529 stars detected, 18934 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 16858, N_manually_selected_comparison_stars = 0
Using 16858 stars for magnitude calibration (before filtering).
Iteratively removing outliers from the linear mag-mag relation (unweighted fit)...
After removing outliers in (X,Y,dm) plane, we are left with 14038 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00013*X_pix +0.00015*Y_pix -0.69185
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 14038 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.66
 ERROR!!! Magnitude calibration failure. Dropping image. 
    78822 objects stored in memory (1000000 max.)
memory:  246008 kB used, 293704 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-09-06T06:57:50.0456083
Setting observation time using DATE-OBS keyword: 2026-09-06T06:57:50.0456083

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-06T06:57:50.045
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
The star  8818.702    14.665 is rejected, see bad_region.lst
The star  8484.828    14.152 is rejected, see bad_region.lst
The star  7579.577    11.710 is rejected, see bad_region.lst
The star  7530.284    11.086 is rejected, see bad_region.lst
The star  8584.529     8.535 is rejected, see bad_region.lst
The star  8413.763     9.779 is rejected, see bad_region.lst
The star  7788.772     8.031 is rejected, see bad_region.lst
The star  8965.875     8.335 is rejected, see bad_region.lst
The star  9476.132     6.365 is rejected, see bad_region.lst
The star  8637.298     7.238 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 21337
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 2444
 * rejected close to frame edge: 85
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 60
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
    21337 * detected, using  146/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000431, number_of_ambiguous_matches=34 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=20683 inliers=20683 rms 1.09 -> 0.24 pix, max corner correction 4.0 pix] fraction_of_ambiguous_matches= 0.000381, number_of_ambiguous_matches=30 
20691 * matched, [CVPOLY iter 2: order=1 pairs=20691 inliers=20691 rms 0.23 -> 0.23 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000381, number_of_ambiguous_matches=30 
20691 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=20691 inliers=20691 rms 0.23 -> 0.23 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000292, number_of_ambiguous_matches=23 
20685 * matched (3rd iteration). Success!
  rotation [degrees] =   3.807
    21337 stars detected, 20685 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 18433, N_manually_selected_comparison_stars = 0
Using 18433 stars for magnitude calibration (before filtering).
Iteratively removing outliers from the linear mag-mag relation (unweighted fit)...
After removing outliers in (X,Y,dm) plane, we are left with 16085 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00013*X_pix +0.00013*Y_pix -0.66479
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 16085 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.65
 ERROR!!! Magnitude calibration failure. Dropping image. 
    78822 objects stored in memory (1000000 max.)
memory:  273544 kB used, 293704 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 2 seconds
Done with measurements! =)

Total number of measurements 145526 (145526 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 1 seconds
The lightcurve files have been written, freeing up more memory...
Creating vast_image_details.log ... 

Writing summary file: vast_summary.log ...  OK
Selecting the best aperture for each source
Aperture with index 0 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for 12549 stars
Aperture with index 1 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for     0 stars
Aperture with index 2 (REFERENCE_APERTURE_DIAMETER -0.10*REFERENCE_APERTURE_DIAMETER) seems best for 18385 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 11151 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  8244 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 16375 stars

done!  =)
TIMING select_aperture: 2 seconds
Computing lightcurve statistics...  Will not compute variability indexes for objects having <1 points in lightcurve
You may disable this by commenting out the line '#define DROP_LIGHTCURVES_WITH_SMALL_NUMBER_OF_POINTS_FROM_ALL_PLOTS' in src/vast_limits.h an re-compiling VaST with 'make'

Computing, please wait a bit
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 66436 objects, the longest string is 384 bytes.
Allocating memory for resorting the file.



----***** VaST processing WARNING *****----
You asked VaST to process 4 images, but only 1 were actually matched to the reference one.
Please investigate this!



**************************************************************
This error might be a bug, but it is far more likely that it is caused by 
inappropriate input data. A few simple things to check in the diagnostic
messages printed above (or the vast*.log files):
 * How many of the input images are matched?
 * Does the number of detected stars on each image look reasonable?
 * Do images have a sufficient overlap of at least about 20 percent?

You may run
 ./sextract_single_image /path/to/my/image/file.fit
to see how well VaST detects stars with the current SExtractor settings
(star detection settings can be changed in the default.sex configuration
file, see various examples in the VaST directory).

If you cannot identify the problem, please e-mail Kirill Sokolovsky 
Please try to describe the problem in details and, if possible, attach vast_summary.log
file and a few example images. If the images are too big to be sent by e-mail, please 
upload them through a web-form http://scan.sai.msu.ru/upload/
**************************************************************

Low percentage of matched images - we'll declare this an unsuccessful VaST run (exit code 1)
_____________________
ERROR running VaST on the field Cap-01-Q2b1x1 (less than 4 images processed)
exp_start= 20.07.2026 07:49:06.161  exp=   20.000  JD= 2461241.82588149  ap=  5.0  rotation=   0.000  *detected= 72689  *matched= 72689  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-06_20.00sec_-0.00C_LIGHTs_0234.fits
exp_start= 20.07.2026 07:49:56.389  exp=   20.000  JD= 2461241.82646284  ap=  5.0  rotation=  -0.001  *detected= 72837  *matched= 66704  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cap-01-Q2b1x1_2026-07-20_02-49-56_20.00sec_-0.00C_LIGHTs_0235.fits
exp_start= 06.09.2026 06:57:00.112  exp=   20.000  JD= 2461289.78970037  ap=  4.4  rotation=   3.789  *detected= 19529  *matched= 18934  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-00_20.00sec_-0.00C_LIGHT_0224.fits
exp_start= 06.09.2026 06:57:50.045  exp=   20.000  JD= 2461289.79027830  ap=  4.4  rotation=   3.807  *detected= 21337  *matched= 20685  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Cap-01-Q2b1x1_015953_TTUQ2b1x1_2430868_vCjm0Uyi/fd_Cap-01-Q2b1x1_2026-09-06_01-57-50_20.00sec_-0.00C_LIGHT_0225.fits
########### Completed Cap-01-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
############################################################
ls: cannot access 'planets.txt': No such file or directory
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT):
ls: cannot access 'moons.txt': No such file or directory
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT):
ls: cannot access 'spacecraft.txt': No such file or directory
############################################################
ls: cannot access 'comets.txt': No such file or directory
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
ls: cannot access 'asassn_transients_list.txt': No such file or directory
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
ls: cannot access 'tocp_transients_list.txt': No such file or directory

=== Transient Factory Profiling ===
Started: Sun Sep  6 02:01:54 CDT 2026
=======================================
TIMING SExtractor: 2 seconds
TIMING matching_and_photometry: 0 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 1 seconds
TIMING SExtractor: 6 seconds
TIMING matching_and_photometry: 2 seconds
TIMING lightcurve_write: 1 seconds
TIMING select_aperture: 2 seconds
FIELD_Cap-01-Q2b1x1: 51s (0.85 min)
=======================================
TOTAL_RUNTIME: 53s (0.88 min)
Finished: Sun Sep  6 02:02:47 CDT 2026