FITS images used in this processing run:

Field Vul-01-Q2b1x1 reference image: Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits
Field Vul-01-Q2b1x1 reference image: Vul-01-Q2b1x1_2026-05-17_05-25-50_20.00sec_-0.00C_LIGHT_1312.fits
Field Vul-01-Q2b1x1 second-epoch image: Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
Field Vul-01-Q2b1x1 second-epoch image: Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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: 
Vul-01-Q2b1x1
#######################################
########### Starting Vul-01-Q2b1x1 ###########
Processing Vul-01-Q2b1x1
server tau has sufficient free disk space available: 299768 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 299768 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-25-50_20.00sec_-0.00C_LIGHT_1312.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.png' -> 'transient_report/Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits_preview.png'

Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits


renamed 'Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.png' -> 'transient_report/Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits_preview.png'

Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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= 508.5618
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 737.2632
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1269.9024
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 565.7588
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1241.8174
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 598.3250
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 2.49705
INFO:                  SECOND_EPOCH__SD_ratio= 0.054
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 =     28.1299991607666 / [degC] Focuser temperature
AMBTEMP =                 28.8 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits 
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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= '2026-09-09T22:46:16.8281751' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-09-10T03:46:16.8281751' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61293.1571392128 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-09-10T03:46:26.7279836' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61293.1572537846 / 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      =     290.767721731763 / [deg] RA of telescope" status=0
Record 32: "DEC     =     22.0001106632682 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     73.7358333333333 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     227.336944444444 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     1.04153165649508 / 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  = 'Vul-01'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '19 23 05'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+22 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  =                20476 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20476 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     28.1299991607666 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     28.1299991607666 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 13.4 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 39.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               903.39 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 28.8 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 16.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             5.400432 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             2.900232 / [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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/d_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits :)

Spent 0.511642 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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/d_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                  0.0 / [degC] CCD temperature
FOCTEMP =     28.1100006103516 / [degC] Focuser temperature
AMBTEMP =                 28.8 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits 
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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= '2026-09-09T22:47:04.1899088' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-09-10T03:47:04.1899088' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61293.1576873725 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-09-10T03:47:14.0916328' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61293.1578019792 / 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      =     290.767721776286 / [deg] RA of telescope" status=0
Record 32: "DEC     =     22.0001106542539 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     73.6180555555555 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     227.811388888889 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     1.04215733414762 / 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  = 'Vul-01'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '19 23 05'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+22 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  =                20476 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20476 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     28.1100006103516 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     28.1100006103516 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 13.4 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 39.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               903.39 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 28.8 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 16.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             5.400432 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             2.900232 / [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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/d_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits :)

Spent 0.494946 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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/d_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits
Previews of the CALIBRATED second-epoch images:


fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits



fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-25-50_20.00sec_-0.00C_LIGHT_1312.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits
  
Last  image: 2461293.65725495 10.09.2026 03:46:16.828 UTC
WARNING: VaST exited with code 1 on the field Vul-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_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits to check the telescope pointing
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
WCS_IMAGE_NAME=wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
Field of view for the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
/data_ssd/NMW-TexasTech/workdir/vast_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/lib/make_outxyls_for_astrometric_calibration found 12252 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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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: "out2894601.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out2894601.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).
Field 1 did not solve (index index-4116.fits, field objects 1-10).
Field 1 did not solve (index index-4115.fits, field objects 1-10).
  log-odds ratio 27.7955 (1.17882e+12), 5 match, 0 conflict, 8 distractors, 88 index.
  RA,Dec = (290.809,21.9827), pixel scale 5.91654 arcsec/pix.
  Hit/miss:   Hit/miss: +----+--++--+(best)-------+---+---+----+-------+----------------------+---+---+----------+-------+--------
Field 1: solved with index index-4114.fits.
Field 1 solved: writing to file ./out2894601.solved to indicate this.
Field: out2894601.xyls
Field center: (RA,Dec) = (290.779611, 21.998374) deg.
Field center: (RA H:M:S, Dec D:M:S) = (19:23:07.107, +21:59:54.147).
Field size: 15.7244 x 10.5282 degrees
Field rotation angle: up is -179.826 degrees E of N
Field parity: neg

Inserting WCS header...  '/data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits' -> 'fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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  9 22:54 fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
-rw-r--r-- 1 apache apache  12K Sep  9 22:54 out2894601.wcs
Inserting WCS header (1st iteration local)...  Opening FITS image file fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits for reading...  done!
Creating new image file (wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits)...  done!
done!
All done!
done
The WCS header appears to be added with no errors in /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits (fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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: "out2894601.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out2894601.axy"...
Only searching for solutions within 15.6583 degrees of RA,Dec (290.779,21.9976)
  log-odds ratio 202.514 (8.92422e+87), 20 match, 0 conflict, 78 distractors, 23 index.
  RA,Dec = (290.786,22.0043), pixel scale 5.94644 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++-+---+-+--+----------------+--------------------+---------+--------------------+------+(best)--
Field 1: solved with index index-4116.fits.
Field 1 solved: writing to file ./out2894601.solved to indicate this.
Field: out2894601.xyls
Field center: (RA,Dec) = (290.780164, 21.999876) deg.
Field center: (RA H:M:S, Dec D:M:S) = (19:23:07.239, +21:59:59.553).
Field size: 15.7019 x 10.5289 degrees
Field rotation angle: up is -179.825 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  9 22:54 fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
-rw-r--r-- 1 apache apache  12K Sep  9 22:54 out2894601.wcs
Inserting WCS header (2nd iteration local)...  Opening FITS image file fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits for reading...  done!
Creating new image file (wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits"...
Found an existing WCS header, will try to verify it.
Extracting sources...
simplexy: found 73349 sources.
Solving...
Reading file "./wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.axy"...
Verifying WCS using indices with quads of size [63.4531, 951.2] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
  log-odds ratio 25.1942 (8.74401e+10), 4 match, 0 conflict, 28 distractors, 11 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: ----+-------+-------+----------+(best)------------------------+-------------------------------------------
fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (7 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (7 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (5 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (4 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (2 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (5 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (2 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (4 < 10)

 --> log-odds 25.1942
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 86.8044 (4.99644e+37), 10 match, 0 conflict, 47 distractors, 23 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: ----++-+----+--+----+----------++--------------+--------+(best)----------------------------+--------------
 --> log-odds 86.8044
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 247.083 (2.02749e+107), 40 match, 0 conflict, 489 distractors, 50 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: +---++-+----+--+----+--+---+---++------+----+--+--------+--+----------------+-------++-------+------
 --> log-odds 247.083
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 656.473 (1.2659e+285), 77 match, 0 conflict, 507 distractors, 91 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: +--+++++----+--+----+-++-+-+---++--+-++++---+--+----+--++--++--+------------+-+-----++----+--+------
 --> log-odds 656.473
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 1427.6 (inf), 158 match, 0 conflict, 499 distractors, 201 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: +--+++++-+--+--+----+-++-+-++++++--+-+++++--+-++----++-++-++++++---+-++-----++++--++++++--+--++-----
 --> log-odds 1427.6
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 2408.38 (inf), 270 match, 0 conflict, 387 distractors, 376 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: +-++++++-++-++-+---++-++-+-++++++--+-+++++-++++++---+++++-++++++-++++++-----++++--++++++--+-+++++--+
 --> log-odds 2408.38
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 4421.73 (inf), 537 match, 0 conflict, 1150 distractors, 727 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++-++-++--++-++++-+++++++++++++++-+++++++-++++++++++++++++++++---++++++-++++++++-++++++++-+
 --> log-odds 4421.73
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 8154.51 (inf), 1073 match, 0 conflict, 2401 distractors, 1436 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++++++-+-++++++++++++++++++++++++++++++++++++++++++++++++++++++-++++++++++++++++++++++++++++
 --> log-odds 8154.51
Verifying WCS using indices with quads of size [63.4531, 951.2] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
  log-odds ratio 25.1942 (8.74401e+10), 4 match, 0 conflict, 28 distractors, 11 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: ----+-------+-------+----------+(best)------------------------+-------------------------------------------
fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (8 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (7 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (7 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (5 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (4 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (2 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (5 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (2 < 10)

fit-wcs.c:118:fit_sip_wcs: Too few correspondences for the SIP order specified (4 < 10)

 --> log-odds 25.1942
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 86.8044 (4.99644e+37), 10 match, 0 conflict, 47 distractors, 23 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: ----++-+----+--+----+----------++--------------+--------+(best)----------------------------+--------------
 --> log-odds 86.8044
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 247.083 (2.02749e+107), 40 match, 0 conflict, 489 distractors, 50 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: +---++-+----+--+----+--+---+---++------+----+--+--------+--+----------------+-------++-------+------
 --> log-odds 247.083
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 656.473 (1.2659e+285), 77 match, 0 conflict, 507 distractors, 91 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: +--+++++----+--+----+-++-+-+---++--+-++++---+--+----+--++--++--+------------+-+-----++----+--+------
 --> log-odds 656.473
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 1427.6 (inf), 158 match, 0 conflict, 499 distractors, 201 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: +--+++++-+--+--+----+-++-+-++++++--+-+++++--+-++----++-++-++++++---+-++-----++++--++++++--+--++-----
 --> log-odds 1427.6
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 2408.38 (inf), 270 match, 0 conflict, 387 distractors, 376 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: +-++++++-++-++-+---++-++-+-++++++--+-+++++-++++++---+++++-++++++-++++++-----++++--++++++--+-+++++--+
 --> log-odds 2408.38
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 4421.73 (inf), 537 match, 0 conflict, 1150 distractors, 727 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++-++-++--++-++++-+++++++++++++++-+++++++-++++++++++++++++++++---++++++-++++++++-++++++++-+
 --> log-odds 4421.73
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 8154.51 (inf), 1073 match, 0 conflict, 2401 distractors, 1436 index.
  RA,Dec = (290.781,22.0007), pixel scale 5.9599 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++++++-+-++++++++++++++++++++++++++++++++++++++++++++++++++++++-++++++++++++++++++++++++++++
 --> log-odds 8154.51
Got 16 solutions.
Field: wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
Field center: (RA,Dec) = (290.780286, 21.999503) deg.
Field center: (RA H:M:S, Dec D:M:S) = (19:23:07.269, +21:59:58.212).
Field size: 15.7032 x 10.5279 degrees
Field rotation angle: up is -179.825 degrees E of N
Field parity: neg
Creating new FITS file "./wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.new"...

renamed 'wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.new' -> 'wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits'
Checking if the catalog wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits.wcscat corresponding to the image wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits alredy exist and is non-empty...
Catalog wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits.wcscat corresponding to the image wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits was not found.
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
verification OK: wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
Generating wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits.wcscat from image00003.cat
Catalog wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits.wcscat corresponding to the image wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits created.
verification OK: wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
verification OK: wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
Image size: 936.9'x623.9'  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: 19:23:07.054 +21:59:55.24 J2000 4789.000 3195.000 

 ### Converting SExtractor-derived pixel positions to celestial coordinates using xy2sky from WCSTools ###
 ### Converted positions of 12685 stars ###
'wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits.wcscat' -> 'vast_debug_catalog_before_xy2sky_correction.cat.log'
'/data_ssd/NMW-TexasTech/workdir/vast_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/correct_sextractor_wcs_catalog_usingxy2sky2901425.tmp' -> 'vast_debug_catalog_after_xy2sky_correction.cat.log'
The plate-solved (WCS-calibrated) image is saved to wcs_fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
###################################
# Check the image center offset between the reference and the blindly solved unmatched second-epoch image (pointing accuracy)
Reference image center 19:23:04.844 +22:00:37.34
Second-epoch image center 19:23:07.054 +21:59:55.24
Angular distance between the image centers 0.0145 deg.
###################################
The second-epoch image center is consistent with the reference image center (offset 0.0145 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 ...

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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd)...  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/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-25-50_20.00sec_-0.00C_LIGHT_1312.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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 Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits catalog from cache
SExtractor catalog cache: restored Vul-01-Q2b1x1_2026-05-17_05-25-50_20.00sec_-0.00C_LIGHT_1312.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/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-25-50_20.00sec_-0.00C_LIGHT_1312.fits
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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).
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits
The above guess is basex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits > image00003.cat.sex_log 2>&1sed on the non-default gain value specified in default.sex by user

autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.1,6.1,5.5,6.8,7.4,8.0 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.1,6.1,5.5,6.7,7.3,7.9 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.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: 2026-05-17T10:24:54.9814560
Setting observation time using DATE-OBS keyword: 2026-05-17T10:24:54.9814560

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-05-17T10:24:54.981
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits
Exposure 20 sec, 17.05.2026 10:24:54.981 UTC = JD(UTC) 2461177.93408543 mid. exp.
The reference image star  9359.234    27.408 is rejected, see bad_region.lst
The reference image star  8313.066    20.304 is rejected, see bad_region.lst
The reference image star  8303.117    18.275 is rejected, see bad_region.lst
The reference image star  9190.372    23.516 is rejected, see bad_region.lst
The reference image star  7648.651    19.317 is rejected, see bad_region.lst
The reference image star  9304.488    18.286 is rejected, see bad_region.lst
The reference image star  9240.966    17.427 is rejected, see bad_region.lst
The reference image star  8332.540    17.305 is rejected, see bad_region.lst
The reference image star  8264.157    17.199 is rejected, see bad_region.lst
The reference image star  8135.323    14.596 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: 18820, (18820 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: 8749
 * rejected close to frame edge: 115
 * 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): 13
 * 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: -7.67
Detection limit from the magnitude-SNR relation= -7.7  (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): 39
 * 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'.
    18659 * detected, using  495/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.016472, number_of_ambiguous_matches=310 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=17463 inliers=17463 rms 0.50 -> 0.49 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.008820, number_of_ambiguous_matches=166 
17450 * matched, [CVPOLY iter 2: order=2 pairs=17450 inliers=17450 rms 0.28 -> 0.27 pix, max corner correction 0.2 pix] fraction_of_ambiguous_matches= 0.005367, number_of_ambiguous_matches=101 
17443 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=17443 inliers=17443 rms 0.17 -> 0.17 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.002550, number_of_ambiguous_matches=48 
17440 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.001
    18659 stars detected, 17440 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 15611, N_manually_selected_comparison_stars = 0
Using 15611 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 15611 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix -0.00000*Y_pix +0.00057
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 15609 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.68
    20039 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  208892 kB used, 245136 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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: 2026-09-10T03:46:16.8281751
Setting observation time using DATE-OBS keyword: 2026-09-10T03:46:16.8281751

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-10T03:46:16.828
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
The star  7826.520    42.937 is rejected, see bad_region.lst
The star  8578.039    61.624 is rejected, see bad_region.lst
The star  7942.012   115.913 is rejected, see bad_region.lst
The star  8988.620   196.332 is rejected, see bad_region.lst
The star  8963.163   232.728 is rejected, see bad_region.lst
The star  7773.488   283.310 is rejected, see bad_region.lst
The star  8987.377   325.876 is rejected, see bad_region.lst
The star  7817.744   333.903 is rejected, see bad_region.lst
The star  9342.361   371.958 is rejected, see bad_region.lst
The star  7819.485   431.033 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 11668
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 917
 * rejected close to frame edge: 83
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>6.1 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): 17
 * 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'.
    11668 * detected, using  309/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000349, number_of_ambiguous_matches=7 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=4973 inliers=4973 rms 1.00 -> 0.35 pix, max corner correction 3.6 pix] fraction_of_ambiguous_matches= 0.000200, number_of_ambiguous_matches=4 
4971 * matched, [CVPOLY iter 2: order=3 pairs=4971 inliers=4971 rms 0.12 -> 0.11 pix, max corner correction 0.4 pix] fraction_of_ambiguous_matches= 0.000200, number_of_ambiguous_matches=4 
4971 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=4971 inliers=4971 rms 0.11 -> 0.11 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000050, number_of_ambiguous_matches=1 
4971 * matched (3rd iteration). Success!
  rotation [degrees] = 179.654
    11668 stars detected,  4971 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 4231, N_manually_selected_comparison_stars = 0
Using 4231 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 3676 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00026*X_pix -0.00008*Y_pix -0.53496
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
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 3676 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.78
 ERROR!!! Magnitude calibration failure. Dropping image. 
    20039 objects stored in memory (1000000 max.)
memory:  209744 kB used, 245136 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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: 2026-09-10T03:47:04.1899088
Setting observation time using DATE-OBS keyword: 2026-09-10T03:47:04.1899088

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-10T03:47:04.189
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits
The star  7827.797    49.998 is rejected, see bad_region.lst
The star  8579.242    68.701 is rejected, see bad_region.lst
The star  7943.270   122.954 is rejected, see bad_region.lst
The star  7958.221   119.604 is rejected, see bad_region.lst
The star  8337.873   123.078 is rejected, see bad_region.lst
The star  8365.972   124.610 is rejected, see bad_region.lst
The star  8439.975   181.298 is rejected, see bad_region.lst
The star  8329.871   186.689 is rejected, see bad_region.lst
The star  8990.259   203.385 is rejected, see bad_region.lst
The star  7753.016   211.955 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 13498
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 456
 * rejected close to frame edge: 77
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>6.1 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): 15
 * 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'.
    13498 * detected, using  358/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.001048, number_of_ambiguous_matches=21 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=6559 inliers=6559 rms 0.88 -> 0.32 pix, max corner correction 4.2 pix] fraction_of_ambiguous_matches= 0.000649, number_of_ambiguous_matches=13 
6557 * matched, [CVPOLY iter 2: order=3 pairs=6557 inliers=6557 rms 0.12 -> 0.12 pix, max corner correction 0.4 pix] fraction_of_ambiguous_matches= 0.000549, number_of_ambiguous_matches=11 
6557 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=6557 inliers=6557 rms 0.12 -> 0.12 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000200, number_of_ambiguous_matches=4 
6557 * matched (3rd iteration). Success!
  rotation [degrees] = 179.658
    13498 stars detected,  6557 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 5639, N_manually_selected_comparison_stars = 0
Using 5639 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 5100 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00022*X_pix -0.00000*Y_pix -0.72617
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
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 5100 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.75
 ERROR!!! Magnitude calibration failure. Dropping image. 
    20039 objects stored in memory (1000000 max.)
memory:  209580 kB used, 245136 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 37479 (37479 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  4732 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  4848 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  2347 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  2032 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  3481 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: 17253 objects, the longest string is 389 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 Vul-01-Q2b1x1 (less than 4 images processed)
exp_start= 17.05.2026 10:24:54.981  exp=   20.000  JD= 2461177.93408543  ap=  6.2  rotation=   0.000  *detected= 18820  *matched= 18820  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits
exp_start= 17.05.2026 10:25:50.371  exp=   20.000  JD= 2461177.93472652  ap=  6.2  rotation=  -0.001  *detected= 18659  *matched= 17440  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-25-50_20.00sec_-0.00C_LIGHT_1312.fits
exp_start= 10.09.2026 03:46:16.828  exp=   20.000  JD= 2461293.65725495  ap=  6.1  rotation= 179.654  *detected= 11668  *matched=  4971  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
exp_start= 10.09.2026 03:47:04.189  exp=   20.000  JD= 2461293.65780311  ap=  6.1  rotation= 179.658  *detected= 13498  *matched=  6557  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-25-50_20.00sec_-0.00C_LIGHT_1312.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits
  
Last  image: 2461293.65725495 10.09.2026 03:46:16.828 UTC
WARNING: VaST exited with code 1 on the field Vul-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 ...

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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd)...  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/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-25-50_20.00sec_-0.00C_LIGHT_1312.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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 Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits catalog from cache
SExtractor catalog cache: restored Vul-01-Q2b1x1_2026-05-17_05-25-50_20.00sec_-0.00C_LIGHT_1312.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/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-25-50_20.00sec_-0.00C_LIGHT_1312.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits > image00003.cat.sex_log 2>&1
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits
The above guess is based on the non-default gain value specified in default.sex by user
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.5,4.5,4.0,4.9,5.4,5.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.5,4.5,4.0,4.9,5.3,5.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits


Done with SExtractor!

TIMING SExtractor: 65 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/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.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: 2026-05-17T10:24:54.9814560
Setting observation time using DATE-OBS keyword: 2026-05-17T10:24:54.9814560

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-05-17T10:24:54.981
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits
Exposure 20 sec, 17.05.2026 10:24:54.981 UTC = JD(UTC) 2461177.93408543 mid. exp.
The reference image star  7731.310     1.560 is rejected, see bad_region.lst
The reference image star  8319.610     1.313 is rejected, see bad_region.lst
The reference image star  9424.884     1.171 is rejected, see bad_region.lst
The reference image star  7557.332     1.162 is rejected, see bad_region.lst
The reference image star  7590.797     1.588 is rejected, see bad_region.lst
The reference image star  8018.335     1.416 is rejected, see bad_region.lst
The reference image star  8147.341     1.482 is rejected, see bad_region.lst
The reference image star  9125.940     1.719 is rejected, see bad_region.lst
The reference image star  9327.824     1.344 is rejected, see bad_region.lst
The reference image star  9403.891     1.420 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: 182638, (182637 good for image matching)
 * rejected as having no flux measurement: 1
 * rejected as having SNR<3.0: 35
 * rejected inside rectangles defined in bad_region.lst: 48167
 * rejected close to frame edge: 904
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.6 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): 13
 * 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: -7.32
Detection limit from the magnitude-SNR relation= -7.3  (5.0 sigma detection)
The simple faintest star detection limit= -6.5
80 percent brightest stars detection limit= -7.8
Selected detection limit= -7.8
Final detection limit= -7.8 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.04.5 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): 27
 * 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'.
    182165 * detected, using  498/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.024020, number_of_ambiguous_matches=4387 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=162760 inliers=162760 rms 0.37 -> 0.37 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.023971, number_of_ambiguous_matches=4378 
162760 * matched, [CVPOLY iter 2: order=1 pairs=162760 inliers=162760 rms 0.37 -> 0.37 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.023971, number_of_ambiguous_matches=4378 
162760 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=162760 inliers=162760 rms 0.37 -> 0.37 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.023971, number_of_ambiguous_matches=4378 
162760 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.002
    182165 stars detected, 162760 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 133171, N_manually_selected_comparison_stars = 0
Using 133171 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 133156 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00000*X_pix +0.00000*Y_pix -0.00284
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 127155 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.30
    202043 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  364772 kB used, 391628 kB peak, 65263848 kB available RAM
Total number of measurements 364803 (364803 measurements stored in RAM)
sorting the measurements cached in memory,
writing lightcurve (outNNNNN.dat) files...
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.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: 2026-09-10T03:46:16.8281751
Setting observation time using DATE-OBS keyword: 2026-09-10T03:46:16.8281751

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-10T03:46:16.828
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
The star  9270.062     1.825 is rejected, see bad_region.lst
The star  8633.012     9.241 is rejected, see bad_region.lst
The star  7503.039    32.306 is rejected, see bad_region.lst
The star  7826.516    42.937 is rejected, see bad_region.lst
The star  8981.544    48.432 is rejected, see bad_region.lst
The star  8578.048    61.621 is rejected, see bad_region.lst
The star  7606.276    91.925 is rejected, see bad_region.lst
The star  7942.006   115.913 is rejected, see bad_region.lst
The star  7956.933   112.430 is rejected, see bad_region.lst
The star  8336.654   116.073 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 105720
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 14
 * rejected inside rectangles defined in bad_region.lst: 6681
 * rejected close to frame edge: 655
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.5 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): 278
 * 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'.
    105720 * detected, using  289/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.001945, number_of_ambiguous_matches=393 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=52834 inliers=52834 rms 0.91 -> 0.30 pix, max corner correction 3.5 pix] fraction_of_ambiguous_matches= 0.001851, number_of_ambiguous_matches=374 
52849 * matched, [CVPOLY iter 2: order=1 pairs=52849 inliers=52849 rms 0.29 -> 0.29 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.001851, number_of_ambiguous_matches=374 
52849 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=52849 inliers=52849 rms 0.29 -> 0.29 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.001851, number_of_ambiguous_matches=374 
52849 * matched (3rd iteration). Success!
  rotation [degrees] = 179.654
    105720 stars detected, 52849 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 41010, N_manually_selected_comparison_stars = 0
Using 41010 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 34366 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00029*X_pix -0.00008*Y_pix -0.66276
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
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 34366 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.50
 ERROR!!! Magnitude calibration failure. Dropping image. 
    202043 objects stored in memory (1000000 max.)
The transient candidate (new frame position  2070.920  5731.367 ; ref frame position:  7497.071   636.636) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
memory:  508388 kB used, 643308 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.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: 2026-09-10T03:47:04.1899088
Setting observation time using DATE-OBS keyword: 2026-09-10T03:47:04.1899088

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-10T03:47:04.189
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits
The star  7784.328    12.804 is rejected, see bad_region.lst
The star  7560.433    11.162 is rejected, see bad_region.lst
The star  9271.234     9.201 is rejected, see bad_region.lst
The star  7569.635     8.316 is rejected, see bad_region.lst
The star  8633.923    16.468 is rejected, see bad_region.lst
The star  7755.436    11.933 is rejected, see bad_region.lst
The star  7702.751    21.587 is rejected, see bad_region.lst
The star  7504.595    39.567 is rejected, see bad_region.lst
The star  7807.294    35.340 is rejected, see bad_region.lst
The star  7827.788    49.998 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 124845
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 17
 * rejected inside rectangles defined in bad_region.lst: 3917
 * rejected close to frame edge: 726
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.5 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): 371
 * 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'.
    124845 * detected, using  341/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.002767, number_of_ambiguous_matches=559 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=69970 inliers=69970 rms 0.86 -> 0.32 pix, max corner correction 4.2 pix] fraction_of_ambiguous_matches= 0.002712, number_of_ambiguous_matches=548 
69985 * matched, [CVPOLY iter 2: order=1 pairs=69985 inliers=69985 rms 0.31 -> 0.31 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.002712, number_of_ambiguous_matches=548 
69985 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=69985 inliers=69985 rms 0.31 -> 0.31 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.002712, number_of_ambiguous_matches=548 
69985 * matched (3rd iteration). Success!
  rotation [degrees] = 179.658
    124845 stars detected, 69985 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 54730, N_manually_selected_comparison_stars = 0
Using 54730 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 48820 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00023*X_pix -0.00000*Y_pix -0.82089
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
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 48820 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.47
 ERROR!!! Magnitude calibration failure. Dropping image. 
    202043 objects stored in memory (1000000 max.)
memory:  514856 kB used, 643308 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 10 seconds
Done with measurements! =)

Total number of measurements 364803 (0 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 50870 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 37343 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 20731 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 17763 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 36053 stars

done!  =)
TIMING select_aperture: 7 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: 162099 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 Vul-01-Q2b1x1 (less than 4 images processed)
exp_start= 17.05.2026 10:24:54.981  exp=   20.000  JD= 2461177.93408543  ap=  4.6  rotation=   0.000  *detected= 182638  *matched= 182638  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-24-54_20.00sec_-0.00C_LIGHT_1311.fits
exp_start= 17.05.2026 10:25:50.371  exp=   20.000  JD= 2461177.93472652  ap=  4.5  rotation=  -0.002  *detected= 182165  *matched= 162760  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Vul-01-Q2b1x1_2026-05-17_05-25-50_20.00sec_-0.00C_LIGHT_1312.fits
exp_start= 10.09.2026 03:46:16.828  exp=   20.000  JD= 2461293.65725495  ap=  4.5  rotation= 179.654  *detected= 105720  *matched= 52849  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-46-16_20.00sec_0.00C_LIGHT_0067.fits
exp_start= 10.09.2026 03:47:04.189  exp=   20.000  JD= 2461293.65780311  ap=  4.5  rotation= 179.658  *detected= 124845  *matched= 69985  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/fd_Vul-01-Q2b1x1_2026-09-09_22-47-04_20.00sec_0.00C_LIGHT_0068.fits
Source monitoring: measuring positions from /data_ssd/NMW-TexasTech/workdir/img_2026-09-09_CI_Vul-01-Q2b1x1_225158_TTUQ2b1x1_2889266_hMsEaqFd/monitoring_positions.txt
Source monitoring: cannot map PHOTOMETRIC_CALIBRATION= to a calibration method - skipping
########### Completed Vul-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: Wed Sep  9 22:53:58 CDT 2026
=======================================
TIMING SExtractor: 2 seconds
TIMING matching_and_photometry: 0 seconds
TIMING lightcurve_write: 1 seconds
TIMING select_aperture: 1 seconds
TIMING SExtractor: 65 seconds
TIMING matching_and_photometry: 10 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 7 seconds
FIELD_Vul-01-Q2b1x1: 128s (2.13 min)
=======================================
TOTAL_RUNTIME: 130s (2.17 min)
Finished: Wed Sep  9 22:56:08 CDT 2026