######## Processing parameters ########
AAVSO_COMMENT_STRING= NMW-TexasTech Camera-1 135mm f/2.2 telephoto lens + QHY600M CMOS
ASTCHECK_ASTEROID_SEARCH_RADIUS_ARCSEC=
BAD_REGION_FILE= /var/www/nmw_calibration/TTUQ1b1x1/TTUQ1_bad_region.lst
CAMERA_SETTINGS= TTUQ1b1x1
CHECK_POINTING_ACCURACY= yes
DARK_FRAMES_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ1b1x1/darks
EXCLUSION_LIST= ../exclusion_list_TTUQ1.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/TTUQ1b1x1/flats
FRAME_EDGE_OFFSET_PIX= 100
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-03-Q1b1x1
#######################################
########### Starting Vul-03-Q1b1x1 ###########
Processing Vul-03-Q1b1x1
server tau has sufficient free disk space available: 213893 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 213893 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.fits
Small preview (one of the new images): 
Large previews of the second-epoch (new) images:
MAKE_PNG_PLOTS=yes
renamed 'Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.png' -> 'transient_report/Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits_preview.png'
Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits

renamed 'Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.png' -> 'transient_report/Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits_preview.png'
Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.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= 494.0959
INFO: REFERENCE_EPOCH__FIRST_IMAGE_SD= 593.5756
INFO: SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1676.0268
INFO: SECOND_EPOCH__FIRST_IMAGE_SD= 572.7071
INFO: SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1668.8439
INFO: SECOND_EPOCH__SECOND_IMAGE_SD= 585.3868
----------------------------------------------
INFO: ref_to_second_epoch_img_mean_ratio= 3.39211
INFO: SECOND_EPOCH__SD_ratio= 0.022
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/TTUQ1b1x1/darks FLAT_FIELD_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ1b1x1/flats
EXPTIME = 20.0 / [s] Exposure duration
SET-TEMP= 0.0 / [degC] CCD temperature setpoint
CCD-TEMP= -0.0 / [degC] CCD temperature
FOCTEMP = 27.2900009155273 / [degC] Focuser temperature
AMBTEMP = 25.0 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.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= '2026-09-06T03:25:06.0836084' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-09-06T08:25:06.0836084' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS = 61289.3507648497 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-09-06T08:25:15.9881681' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG = 61289.3508794908 / 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-33d3d743814b8b447' / 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-TTU1' / 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 = 318.458072298025 / [deg] RA of telescope" status=0
Record 32: "DEC = 21.9995366798223 / [deg] Declination of telescope" status=0
Record 33: "CENTALT = 43.8708333333333 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ = 269.180277777778 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS = 1.44140491584423 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East' / Telescope pointing state" status=0
Record 37: "SITEELEV= 1015.0 / [m] Observation site elevation" status=0
Record 38: "SITELAT = 33.7480555555556 / [deg] Observation site latitude" status=0
Record 39: "SITELONG= -101.958333333333 / [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-03' / Name of the object of interest" status=0
Record 46: "OBJCTRA = '21 13 51' / [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 = 29545 / [step] Focuser position" status=0
Record 51: "FOCUSPOS= 29545 / [step] Focuser position" status=0
Record 52: "FOCUSSZ = 0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP = 27.2900009155273 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM= 27.2900009155273 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT= 14.7 / [degC] Dew point" status=0
Record 56: "HUMIDITY= 53.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE= 899.9 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP = 25.0 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR = 27.0 / [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 = 4.700376 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN' / FITS Image Orientation" status=0
Record 63: "EQUINOX = 2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP = 20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP = 13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP = 85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP = 85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP = 20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL = 6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF = 235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET = 20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM = T / isLongExposureMode" status=0
Record 74: "QHY_OFF0= 3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits 9576 6388 16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388 16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/d_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits :)
Spent 0.494599 seconds
renamed 'mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ1b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/d_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits 9576 6388 16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-08-12_multinight.fit 9576 6388 16 bitpix
Avarage count on flat field image: 36313.440328
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits :)
No overscan detected - all values seem high! (left_median=23343.0, right_median=27331.5)
renamed 'mff_TTUQ1b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
EXPTIME = 20.0 / [s] Exposure duration
SET-TEMP= 0.0 / [degC] CCD temperature setpoint
CCD-TEMP= -0.0 / [degC] CCD temperature
FOCTEMP = 26.2900009155273 / [degC] Focuser temperature
AMBTEMP = 25.0 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.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= '2026-09-06T03:26:01.4636636' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-09-06T08:26:01.4636636' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS = 61289.3514058217 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-09-06T08:26:11.3670117' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG = 61289.3515204513 / 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-33d3d743814b8b447' / 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-TTU1' / 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 = 318.458072292198 / [deg] RA of telescope" status=0
Record 32: "DEC = 21.9995366424048 / [deg] Declination of telescope" status=0
Record 33: "CENTALT = 43.6761111111111 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ = 269.312777777778 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS = 1.4465075499009 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East' / Telescope pointing state" status=0
Record 37: "SITEELEV= 1015.0 / [m] Observation site elevation" status=0
Record 38: "SITELAT = 33.7480555555556 / [deg] Observation site latitude" status=0
Record 39: "SITELONG= -101.958333333333 / [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-03' / Name of the object of interest" status=0
Record 46: "OBJCTRA = '21 13 51' / [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 = 29545 / [step] Focuser position" status=0
Record 51: "FOCUSPOS= 29545 / [step] Focuser position" status=0
Record 52: "FOCUSSZ = 0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP = 26.2900009155273 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM= 26.2900009155273 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT= 14.7 / [degC] Dew point" status=0
Record 56: "HUMIDITY= 53.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE= 899.9 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP = 25.0 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR = 27.0 / [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 = 4.700376 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN' / FITS Image Orientation" status=0
Record 63: "EQUINOX = 2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP = 20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP = 13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP = 85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP = 85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP = 20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL = 6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF = 235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET = 20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM = T / isLongExposureMode" status=0
Record 74: "QHY_OFF0= 3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits 9576 6388 16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388 16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/d_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits :)
Spent 0.467448 seconds
renamed 'mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ1b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/d_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits 9576 6388 16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-08-12_multinight.fit 9576 6388 16 bitpix
Avarage count on flat field image: 36313.440328
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits :)
No overscan detected - all values seem high! (left_median=23343.0, right_median=27331.5)
renamed 'mff_TTUQ1b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
Dark frame used to calibrate the second-epoch images:

Flat field used to calibrate the second-epoch images:

after the calibration attempt:
SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
Previews of the CALIBRATED second-epoch images:
fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits

fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits

Updating neverexclude_list.txt
'/var/www/nmw_calibration/neverexclude_list.txt' -> './neverexclude_list.txt'
Choosing bad regions list
'/var/www/nmw_calibration/TTUQ1b1x1/TTUQ1_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-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
Last image: 2461289.85088059 06.09.2026 08:25:06.083 UTC
WARNING: VaST exited with code 1 on the field Vul-03-Q1b1x1 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-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits to check the telescope pointing
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
WCS_IMAGE_NAME=wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
Field of view for the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits was not set. Trying to guess...
The guess is 605 arcmin.
No image with WCS calibration found for /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits .... Determining astrometry method...
Using the local copy of Astrometry.net software...
Choosing aperture...
Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
/data_ssd/NMW-TexasTech/workdir/vast_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/lib/make_outxyls_for_astrometric_calibration found 4480 high-SNR stars for plate solving
This service uses tools provided by Astrometry.net.
For more information visit http://astrometry.net/
######### Trying to solve plate assuming 605' field of view #########
/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.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: "out10103.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out10103.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).
log-odds ratio 26.1358 (2.24195e+11), 7 match, 0 conflict, 18 distractors, 41 index.
RA,Dec = (318.535,22.0176), pixel scale 5.95001 arcsec/pix.
Hit/miss: Hit/miss: -+-----+-+---+----++----+(best)-----+-----------------------+---------------------------------------------
Field 1: solved with index index-4115.fits.
Field 1 solved: writing to file ./out10103.solved to indicate this.
Field: out10103.xyls
Field center: (RA,Dec) = (318.519952, 22.004330) deg.
Field center: (RA H:M:S, Dec D:M:S) = (21:14:04.788, +22:00:15.588).
Field size: 15.7926 x 10.5723 degrees
Field rotation angle: up is -176.292 degrees E of N
Field parity: neg
Inserting WCS header... '/data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits' -> 'fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits'
WCS keywords and Astrometry.net provenance markers have been successfully stripped from all HDUs in the file.
-rw-r--r-- 1 apache apache 117M Sep 6 03:29 fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
-rw-r--r-- 1 apache apache 12K Sep 6 03:29 out10103.wcs
Inserting WCS header (1st iteration local)... Opening FITS image file fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits for reading... done!
Creating new image file (wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits)... done!
done!
All done!
done
The WCS header appears to be added with no errors in /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits (fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.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: "out10103.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out10103.axy"...
Only searching for solutions within 15.72 degrees of RA,Dec (318.519,22.0036)
Field 1 did not solve (index index-4116.fits, field objects 1-100).
log-odds ratio 26.1358 (2.24195e+11), 7 match, 0 conflict, 18 distractors, 41 index.
RA,Dec = (318.535,22.0176), pixel scale 5.95001 arcsec/pix.
Hit/miss: Hit/miss: -+-----+-+---+----++----+(best)-----+-----------------------+---------------------------------------------
Field 1: solved with index index-4115.fits.
Field 1 solved: writing to file ./out10103.solved to indicate this.
Field: out10103.xyls
Field center: (RA,Dec) = (318.518226, 22.002986) deg.
Field center: (RA H:M:S, Dec D:M:S) = (21:14:04.374, +22:00:10.751).
Field size: 15.7746 x 10.5725 degrees
Field rotation angle: up is -176.29 degrees E of N
Field parity: neg
WCS keywords and Astrometry.net provenance markers have been successfully stripped from all HDUs in the file.
-rw-r--r-- 1 apache apache 117M Sep 6 03:29 fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
-rw-r--r-- 1 apache apache 12K Sep 6 03:29 out10103.wcs
Inserting WCS header (2nd iteration local)... Opening FITS image file fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits for reading... done!
Creating new image file (wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.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-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits"...
Found an existing WCS header, will try to verify it.
Extracting sources...
simplexy: found 33083 sources.
Solving...
Reading file "./wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.axy"...
Verifying WCS using indices with quads of size [63.7214, 955.223] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
--> log-odds 9.09051
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
log-odds ratio 37.1464 (1.35667e+16), 5 match, 0 conflict, 24 distractors, 17 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: -----++---------------+----++(best)------------------------------------------+-+--------------------------
--> log-odds 37.1464
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
log-odds ratio 329.045 (7.98743e+142), 44 match, 0 conflict, 1065 distractors, 44 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: ----+++----+--------+++++--++----------+-------------++-----------+----+-+-------------------------+
--> log-odds 329.045
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
log-odds ratio 846.99 (inf), 96 match, 0 conflict, 1013 distractors, 98 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: ---++++----+++++----++++++-++----+-----+---+---+----++++----------+--+-+-+-----+--------------+----+
--> log-odds 846.99
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
log-odds ratio 1765.52 (inf), 188 match, 0 conflict, 1644 distractors, 192 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: -+-+++++-+++++++---++++++-++++++++++---+--++-+-+-+--++++----------+-++-+-+-++-++---++++-+----++--+-+
--> log-odds 1765.52
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
log-odds ratio 3403.14 (inf), 374 match, 0 conflict, 2767 distractors, 381 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: ++++++++++++++++++-+++++++++++++++++++-+-+++-+++-+-+++++-++-++++-++-++++-++++-++++-++++-+----++--+++
--> log-odds 3403.14
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
log-odds ratio 6243.74 (inf), 726 match, 0 conflict, 3388 distractors, 744 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: ++++++++++++++++++++++++++++++++++++++-+++++++++++++++++-++++++++++++++++++++-+++++++++++-++-+++-+++
--> log-odds 6243.74
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
log-odds ratio 11051.6 (inf), 1385 match, 0 conflict, 4941 distractors, 1454 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: ++++++++++++++++++++++++++++++++++++++-++++++++++++++++++++++++++++++++++++++-+++++++++++-++-+++++++
--> log-odds 11051.6
Verifying WCS using indices with quads of size [63.7214, 955.223] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
--> log-odds 9.09051
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
log-odds ratio 37.1464 (1.35667e+16), 5 match, 0 conflict, 24 distractors, 17 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: -----++---------------+----++(best)------------------------------------------+-+--------------------------
--> log-odds 37.1464
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
log-odds ratio 329.045 (7.98743e+142), 44 match, 0 conflict, 1065 distractors, 44 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: ----+++----+--------+++++--++----------+-------------++-----------+----+-+-------------------------+
--> log-odds 329.045
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
log-odds ratio 846.99 (inf), 96 match, 0 conflict, 1013 distractors, 98 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: ---++++----+++++----++++++-++----+-----+---+---+----++++----------+--+-+-+-----+--------------+----+
--> log-odds 846.99
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
log-odds ratio 1765.52 (inf), 188 match, 0 conflict, 1644 distractors, 192 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: -+-+++++-+++++++---++++++-++++++++++---+--++-+-+-+--++++----------+-++-+-+-++-++---++++-+----++--+-+
--> log-odds 1765.52
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
log-odds ratio 3403.14 (inf), 374 match, 0 conflict, 2767 distractors, 381 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: ++++++++++++++++++-+++++++++++++++++++-+-+++-+++-+-+++++-++-++++-++-++++-++++-++++-++++-+----++--+++
--> log-odds 3403.14
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
log-odds ratio 6243.74 (inf), 726 match, 0 conflict, 3388 distractors, 744 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: ++++++++++++++++++++++++++++++++++++++-+++++++++++++++++-++++++++++++++++++++-+++++++++++-++-+++-+++
--> log-odds 6243.74
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
log-odds ratio 11051.6 (inf), 1385 match, 0 conflict, 4941 distractors, 1454 index.
RA,Dec = (318.519,22.0038), pixel scale 5.98511 arcsec/pix.
Hit/miss: Hit/miss: ++++++++++++++++++++++++++++++++++++++-++++++++++++++++++++++++++++++++++++++-+++++++++++-++-+++++++
--> log-odds 11051.6
Got 14 solutions.
Field: wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
Field center: (RA,Dec) = (318.518359, 22.003074) deg.
Field center: (RA H:M:S, Dec D:M:S) = (21:14:04.406, +22:00:11.067).
Field size: 15.7734 x 10.5737 degrees
Field rotation angle: up is -176.292 degrees E of N
Field parity: neg
Creating new FITS file "./wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.new"...
renamed 'wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.new' -> 'wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits'
Checking if the catalog wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits.wcscat corresponding to the image wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits alredy exist and is non-empty...
Catalog wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits.wcscat corresponding to the image wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits was not found.
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
verification OK: wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
Generating wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits.wcscat from image00003.cat
Catalog wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits.wcscat corresponding to the image wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits created.
verification OK: wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
verification OK: wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
Image size: 941.4'x626.7' 15.7(deg)x10.4(deg) 9576x6388 pix
Image scale: 5.90"/pix along the X axis and 5.89"/pix along the Y axis
Image center: 21:14:04.178 +22:00:08.27 J2000 4789.000 3195.000
### Converting SExtractor-derived pixel positions to celestial coordinates using xy2sky from WCSTools ###
### Converted positions of 4538 stars ###
'wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits.wcscat' -> 'vast_debug_catalog_before_xy2sky_correction.cat.log'
'/data_ssd/NMW-TexasTech/workdir/vast_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/correct_sextractor_wcs_catalog_usingxy2sky22145.tmp' -> 'vast_debug_catalog_after_xy2sky_correction.cat.log'
The plate-solved (WCS-calibrated) image is saved to wcs_fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
###################################
# Check the image center offset between the reference and the blindly solved unmatched second-epoch image (pointing accuracy)
Reference image center 21:13:51.625 +22:00:14.92
Second-epoch image center 21:14:04.178 +22:00:08.27
Angular distance between the image centers 0.0485 deg.
###################################
The second-epoch image center is consistent with the reference image center (offset 0.0485 deg.) - the star matching failure is probably not a pointing problem
____ VaST output ____
--==VaST 1.0rc90==--
Parsing command line arguments...
opt 'F': Will NOT create flag images for SExtractor
opt '5': 5.000000 pix is the new fixed star matching radius!
opt 'b': Using 500 reference stars for image matching!
opt '3': Will try to select best aperture for each source!
opt 'y': 0 SysRem iterations will be conducted!
opt 't 4': robust linear magnitude calibration (vary zero-point and slope)
opt 'x': 99 is the maximum acceptable SExtractor flag!
WARNING: disabling the mag-size filter in order not to reject blended stars.
opt 'u': Stick with UTC time system, no conversion to TT will be done!
opt 'f': Run ./find_candidates manually!
opt 'k': "JD" keyword in FITS image header will be ignored!
INFO from vast_remove_directory(): Could not open directory: symlinks_to_images
INFO from vast_remove_directory(): Could not open directory: converted_images
INFO from vast_remove_directory(): Could not open directory: unpacked_images
Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits is already a symlink and we do not allow symlinks on symlinks
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.fits is already a symlink and we do not allow symlinks on symlinks
Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU)... 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-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.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: 190.0 1039.0 192.0 1041.0 (defined in bad_region.lst)
Excluding image region: 226.0 1548.0 228.0 1550.0 (defined in bad_region.lst)
Excluding image region: 351.0 1875.0 353.0 1877.0 (defined in bad_region.lst)
Excluding image region: 501.0 5912.0 503.0 5914.0 (defined in bad_region.lst)
Excluding image region: 638.0 5545.0 640.0 5547.0 (defined in bad_region.lst)
Excluding image region: 724.0 2731.0 726.0 2733.0 (defined in bad_region.lst)
Excluding image region: 883.0 1376.0 885.0 1378.0 (defined in bad_region.lst)
Excluding image region: 901.0 3972.0 903.0 3974.0 (defined in bad_region.lst)
Excluding image region: 1151.0 918.0 1153.0 920.0 (defined in bad_region.lst)
Excluding image region: 1157.0 135.0 1159.0 137.0 (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 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-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits catalog from cache
SExtractor catalog cache: restored Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.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-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.fits
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
Excluding image region: 190.0 1039.0 192.0 1041.0 (defined in bad_region.lst)
Excluding image region: 226.0 1548.0 228.0 1550.0 (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_2026-09-06_CI_Vul-03-Q1Excluding image region: 351.0 1875.0 353.0 1877.0 (defined in bad_region.lst)
b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
The above guess is Excluding image region: 501.0 5912.0 503.0 5914.0 (defined in bad_region.lst)
based on the non-default gain value specified in default.sex by user
Excluding image region: 638.0 5545.0 640.0 5547.0 (defined in bad_region.lst)
Excluding image region: 724.0 2731.0 726.0 2733.0 (defined in bad_region.lst)
Excluding image region: 883.0 1376.0 885.0 1378.0 (defined in bad_region.lst)
Excluding image region: 901.0 3972.0 903.0 3974.0 (defined in bad_region.lst)
Excluding image region: 1151.0 918.0 1153.0 920.0 (defined in bad_region.lst)
Excluding image region: 1157.0 135.0 1159.0 137.0 (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
Excluding image region: 190.0 1039.0 192.0 1041.0 (defined in bad_region.lst)
Excluding image region: 226.0 1548.0 228.0 1550.0 (defined in bad_region.lst)
Excluding image region: 351.0 1875.0 353.0 1877.0 (defined in bad_region.lst)
Excluding image region: 501.0 5912.0 503.0 5914.0 (defined in bad_region.lst)
Excluding image region: 638.0 5545.0 640.0 5547.0 (defined in bad_region.lst)
Excluding image region: 724.0 2731.0 726.0 2733.0 (defined in bad_region.lst)
Excluding image region: 883.0 1376.0 885.0 1378.0 (defined in bad_region.lst)
Excluding image region: 901.0 3972.0 903.0 3974.0 (defined in bad_region.lst)
Excluding image region: 1151.0 918.0 1153.0 920.0 (defined in bad_region.lst)
Excluding image region: 1157.0 135.0 1159.0 137.0 (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex -PARAMETERS_NAME default.param -PHOT_APERTURES 5.9,5.9,5.4,6.5,7.1,7.7 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex -PARAMETERS_NAME default.param -PHOT_APERTURES 6.0,6.0,5.4,6.5,7.1,7.7 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
Done with SExtractor!
TIMING SExtractor: 1 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-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-07-18T06:51:41.4340561
Setting observation time using DATE-OBS keyword: 2026-07-18T06:51:41.4340561
Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-07-18T06:51:41.434
EXPTIME = 20.000
Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits
Exposure 20 sec, 18.07.2026 06:51:41.434 UTC = JD(UTC) 2461239.78601197 mid. exp.
SExtractor output filtering results:
* passed selection: 21107, (21106 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: 0
* rejected close to frame edge: 108
* rejected as being too small (<1.6 pix): 0
* rejected as being too large (>6.3 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'.
Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.54
Detection limit from the magnitude-SNR relation= -7.5 (5.0 sigma detection)
The simple faintest star detection limit= -9.5
80 percent brightest stars detection limit= -10.3
Selected detection limit= -10.3
Final detection limit= -10.3 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)
Parameter box for transient search: 10.06.3 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): 16
* 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'.
20959 * detected, using 496/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.013692, number_of_ambiguous_matches=289
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=19693 inliers=19693 rms 0.36 -> 0.36 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.008244, number_of_ambiguous_matches=174
19686 * matched, [CVPOLY iter 2: order=1 pairs=19686 inliers=19686 rms 0.26 -> 0.26 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.005212, number_of_ambiguous_matches=110
19679 * matched (2nd iteration). [CVPOLY iter 3: order=2 pairs=19679 inliers=19679 rms 0.16 -> 0.15 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.002037, number_of_ambiguous_matches=43
19675 * matched (3rd iteration). Success!
rotation [degrees] = 0.000
20959 stars detected, 19675 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 18214, N_manually_selected_comparison_stars = 0
Using 18214 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 18214 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
delta_m = -0.00000*X_pix +0.00000*Y_pix +0.00064
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 18213 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.54
22391 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory: 207896 kB used, 244748 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)
Processing /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.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: 2026-09-06T08:25:06.0836084
Setting observation time using DATE-OBS keyword: 2026-09-06T08:25:06.0836084
Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-06T08:25:06.083
EXPTIME = 20.000
Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
SExtractor output filtering results:
* passed selection: 4513
* rejected as having no flux measurement: 0
* rejected as having SNR<3.0: 0
* rejected inside rectangles defined in bad_region.lst: 0
* rejected close to frame edge: 23
* rejected as being too small (<1.5 pix): 0
* rejected as being too large (>5.9 pix): 0
* rejected as outliers in mag-size plot: 0
* rejected as having SExtractor flags > 99 and <= 7: 0
* rejected as having hopelessly bad SExtractor flags (>7): 2
* 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'.
4513 * detected, using 106/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000313, number_of_ambiguous_matches=7
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=4317 inliers=4317 rms 0.55 -> 0.25 pix, max corner correction 2.1 pix] fraction_of_ambiguous_matches= 0.000313, number_of_ambiguous_matches=7
4316 * matched, [CVPOLY iter 2: order=1 pairs=4316 inliers=4316 rms 0.18 -> 0.18 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000313, number_of_ambiguous_matches=7
4316 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=4316 inliers=4316 rms 0.18 -> 0.18 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000223, number_of_ambiguous_matches=5
4316 * matched (3rd iteration). Success!
rotation [degrees] = 175.999
4513 stars detected, 4316 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 3739, N_manually_selected_comparison_stars = 0
Using 3739 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 3075 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
delta_m = 0.00015*X_pix +0.00009*Y_pix -0.44285
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 3075 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.93
[01;31m ERROR!!! Magnitude calibration failure. Dropping image. [33;00m
22391 objects stored in memory (1000000 max.)
memory: 207968 kB used, 244748 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)
Processing /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.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: 2026-09-06T08:26:01.4636636
Setting observation time using DATE-OBS keyword: 2026-09-06T08:26:01.4636636
Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-06T08:26:01.463
EXPTIME = 20.000
Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
The star 4003.619 1322.060 is rejected, see bad_region.lst
SExtractor output filtering results:
* passed selection: 4632
* rejected as having no flux measurement: 0
* rejected as having SNR<3.0: 0
* rejected inside rectangles defined in bad_region.lst: 1
* rejected close to frame edge: 21
* rejected as being too small (<1.5 pix): 0
* rejected as being too large (>6.0 pix): 0
* rejected as outliers in mag-size plot: 0
* rejected as having SExtractor flags > 99 and <= 7: 0
* rejected as having hopelessly bad SExtractor flags (>7): 0
* 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'.
4632 * detected, using 109/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000179, number_of_ambiguous_matches=4
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=4439 inliers=4439 rms 0.50 -> 0.25 pix, max corner correction 2.9 pix] fraction_of_ambiguous_matches= 0.000179, number_of_ambiguous_matches=4
4438 * matched, [CVPOLY iter 2: order=3 pairs=4438 inliers=4438 rms 0.18 -> 0.17 pix, max corner correction 1.0 pix] fraction_of_ambiguous_matches= 0.000179, number_of_ambiguous_matches=4
4438 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=4438 inliers=4438 rms 0.17 -> 0.17 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000179, number_of_ambiguous_matches=4
4438 * matched (3rd iteration). Success!
rotation [degrees] = 175.994
4632 stars detected, 4438 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 3857, N_manually_selected_comparison_stars = 0
Using 3857 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 3296 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
delta_m = 0.00015*X_pix +0.00008*Y_pix -0.43915
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 3296 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.94
[01;31m ERROR!!! Magnitude calibration failure. Dropping image. [33;00m
22391 objects stored in memory (1000000 max.)
memory: 207968 kB used, 244748 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 42066 (42066 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 5000 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 6275 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 2205 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 2243 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 3952 stars
done! =)
TIMING select_aperture: 0 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: 19500 objects, the longest string is 383 bytes.
Allocating memory for resorting the file.
----***** VaST processing WARNING *****----
You asked VaST to process 4 images, but only 1 were actually matched to the reference one.
Please investigate this!
**************************************************************
This error might be a bug, but it is far more likely that it is caused by
inappropriate input data. A few simple things to check in the diagnostic
messages printed above (or the vast*.log files):
* How many of the input images are matched?
* Does the number of detected stars on each image look reasonable?
* Do images have a sufficient overlap of at least about 20 percent?
You may run
./sextract_single_image /path/to/my/image/file.fit
to see how well VaST detects stars with the current SExtractor settings
(star detection settings can be changed in the default.sex configuration
file, see various examples in the VaST directory).
If you cannot identify the problem, please e-mail Kirill Sokolovsky
Please try to describe the problem in details and, if possible, attach vast_summary.log
file and a few example images. If the images are too big to be sent by e-mail, please
upload them through a web-form http://scan.sai.msu.ru/upload/
**************************************************************
Low percentage of matched images - we'll declare this an unsuccessful VaST run (exit code 1)
_____________________
ERROR running VaST on the field Vul-03-Q1b1x1 (less than 4 images processed)
exp_start= 18.07.2026 06:51:41.434 exp= 20.000 JD= 2461239.78601197 ap= 6.3 rotation= 0.000 *detected= 21107 *matched= 21107 status=OK /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits
exp_start= 18.07.2026 06:52:19.872 exp= 20.000 JD= 2461239.78645685 ap= 6.3 rotation= 0.000 *detected= 20959 *matched= 19675 status=OK /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.fits
exp_start= 06.09.2026 08:25:06.083 exp= 20.000 JD= 2461289.85088059 ap= 5.9 rotation= 175.999 *detected= 4513 *matched= 4316 status=ERROR /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
exp_start= 06.09.2026 08:26:01.463 exp= 20.000 JD= 2461289.85152156 ap= 6.0 rotation= 175.994 *detected= 4632 *matched= 4438 status=ERROR /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.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-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
Last image: 2461289.85088059 06.09.2026 08:25:06.083 UTC
WARNING: VaST exited with code 1 on the field Vul-03-Q1b1x1 as too few input images were matched to the reference image - wrong pointing? clouds? very bad focus?
____ VaST output ____
--==VaST 1.0rc90==--
Parsing command line arguments...
opt 'F': Will NOT create flag images for SExtractor
opt '5': 5.000000 pix is the new fixed star matching radius!
opt 'b': Using 500 reference stars for image matching!
opt '3': Will try to select best aperture for each source!
opt 'y': 0 SysRem iterations will be conducted!
opt 't 4': robust linear magnitude calibration (vary zero-point and slope)
opt 'x': 99 is the maximum acceptable SExtractor flag!
WARNING: disabling the mag-size filter in order not to reject blended stars.
opt 'u': Stick with UTC time system, no conversion to TT will be done!
opt 'f': Run ./find_candidates manually!
opt 'k': "JD" keyword in FITS image header will be ignored!
INFO from vast_remove_directory(): Could not open directory: symlinks_to_images
INFO from vast_remove_directory(): Could not open directory: converted_images
INFO from vast_remove_directory(): Could not open directory: unpacked_images
Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits is already a symlink and we do not allow symlinks on symlinks
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.fits is already a symlink and we do not allow symlinks on symlinks
Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU)... 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-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.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: 190.0 1039.0 192.0 1041.0 (defined in bad_region.lst)
Excluding image region: 226.0 1548.0 228.0 1550.0 (defined in bad_region.lst)
Excluding image region: 351.0 1875.0 353.0 1877.0 (defined in bad_region.lst)
Excluding image region: 501.0 5912.0 503.0 5914.0 (defined in bad_region.lst)
Excluding image region: 638.0 5545.0 640.0 5547.0 (defined in bad_region.lst)
Excluding image region: 724.0 2731.0 726.0 2733.0 (defined in bad_region.lst)
Excluding image region: 883.0 1376.0 885.0 1378.0 (defined in bad_region.lst)
Excluding image region: 901.0 3972.0 903.0 3974.0 (defined in bad_region.lst)
Excluding image region: 1151.0 918.0 1153.0 920.0 (defined in bad_region.lst)
Excluding image region: 1157.0 135.0 1159.0 137.0 (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 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-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits catalog from cache
SExtractor catalog cache: restored Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.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-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
Excluding image region: 190.0 1039.0 192.0 1041.0 (defined in bad_region.lst)
Excluding image region: 226.0 1548.0 228.0 1550.0 (defined in bad_region.lst)
Excluding image region: 351.0 1875.0 353.0 1877.0 (defined in bad_region.lst)
Excluding image region: 501.0 5912.0 503.0 5914.0 (defined in bad_region.lst)
Excluding image region: 638.0 5545.0 640.0 5547.0 (defined in bad_region.lst)
Excluding image region: 724.0 2731.0 726.0 2733.0 (defined in bad_region.lst)
Excluding image region: 883.0 1376.0 885.0 1378.0 (defined in bad_region.lst)
Excluding image region: 901.0 3972.0 903.0 3974.0 (defined in bad_region.lst)
Excluding image region: 1151.0 918.0 1153.0 920.0 (defined in bad_region.lst)
Excluding image region: 1157.0 135.0 1159.0 137.0 (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.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_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.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_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
Excluding image region: 190.0 1039.0 192.0 1041.0 (defined in bad_region.lst)
Excluding image region: 226.0 1548.0 228.0 1550.0 (defined in bad_region.lst)
Excluding image region: 351.0 1875.0 353.0 1877.0 (defined in bad_region.lst)
Excluding image region: 501.0 5912.0 503.0 5914.0 (defined in bad_region.lst)
Excluding image region: 638.0 5545.0 640.0 5547.0 (defined in bad_region.lst)
Excluding image region: 724.0 2731.0 726.0 2733.0 (defined in bad_region.lst)
Excluding image region: 883.0 1376.0 885.0 1378.0 (defined in bad_region.lst)
Excluding image region: 901.0 3972.0 903.0 3974.0 (defined in bad_region.lst)
Excluding image region: 1151.0 918.0 1153.0 920.0 (defined in bad_region.lst)
Excluding image region: 1157.0 135.0 1159.0 137.0 (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex -PARAMETERS_NAME default.param -PHOT_APERTURES 4.2,4.2,3.8,4.7,5.1,5.5 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex -PARAMETERS_NAME default.param -PHOT_APERTURES 4.2,4.2,3.8,4.7,5.1,5.5 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
Done with SExtractor!
TIMING SExtractor: 12 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-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-07-18T06:51:41.4340561
Setting observation time using DATE-OBS keyword: 2026-07-18T06:51:41.4340561
Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-07-18T06:51:41.434
EXPTIME = 20.000
Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits
Exposure 20 sec, 18.07.2026 06:51:41.434 UTC = JD(UTC) 2461239.78601197 mid. exp.
The reference image star 1149.311 918.261 is rejected, see bad_region.lst
The reference image star 190.860 1037.777 is rejected, see bad_region.lst
The reference image star 2638.318 2105.271 is rejected, see bad_region.lst
The reference image star 3306.698 3307.890 is rejected, see bad_region.lst
The reference image star 2177.175 3863.240 is rejected, see bad_region.lst
The reference image star 2858.893 5863.677 is rejected, see bad_region.lst
SExtractor output filtering results:
* passed selection: 145432, (145432 good for image matching)
* rejected as having no flux measurement: 0
* rejected as having SNR<3.0: 39
* rejected inside rectangles defined in bad_region.lst: 6
* rejected close to frame edge: 715
* rejected as being too small (<1.2 pix): 0
* rejected as being too large (>4.8 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): 266
* 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: -7.27
Detection limit from the magnitude-SNR relation= -7.3 (5.0 sigma detection)
The simple faintest star detection limit= -6.6
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: 10.04.8 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): 247
* 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'.
146311 * detected, using 503/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.015050, number_of_ambiguous_matches=2202
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=132473 inliers=132473 rms 0.31 -> 0.31 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.015050, number_of_ambiguous_matches=2202
132472 * matched, [CVPOLY iter 2: order=1 pairs=132472 inliers=132472 rms 0.31 -> 0.31 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.015050, number_of_ambiguous_matches=2202
132472 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=132472 inliers=132472 rms 0.31 -> 0.31 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.014305, number_of_ambiguous_matches=2093
132454 * matched (3rd iteration). Success!
rotation [degrees] = 0.000
146311 stars detected, 132454 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 116788, N_manually_selected_comparison_stars = 0
Using 116788 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 116780 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
delta_m = -0.00000*X_pix +0.00000*Y_pix +0.00023
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 111527 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.27
159289 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory: 322092 kB used, 348376 kB peak, 65263848 kB available RAM
Total number of measurements 291743 (291743 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_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.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: 2026-09-06T08:25:06.0836084
Setting observation time using DATE-OBS keyword: 2026-09-06T08:25:06.0836084
Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-06T08:25:06.083
EXPTIME = 20.000
Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
The star 1157.982 135.974 is rejected, see bad_region.lst
The star 1152.035 919.003 is rejected, see bad_region.lst
The star 190.978 1039.974 is rejected, see bad_region.lst
The star 884.000 1377.003 is rejected, see bad_region.lst
The star 3618.976 1436.983 is rejected, see bad_region.lst
The star 351.999 1875.998 is rejected, see bad_region.lst
The star 2635.973 2107.985 is rejected, see bad_region.lst
The star 725.001 2732.007 is rejected, see bad_region.lst
The star 1455.006 3133.018 is rejected, see bad_region.lst
SExtractor output filtering results:
* passed selection: 51065
* rejected as having no flux measurement: 0
* rejected as having SNR<3.0: 15
* rejected inside rectangles defined in bad_region.lst: 9
* rejected close to frame edge: 234
* rejected as being too small (<1.1 pix): 0
* rejected as being too large (>4.2 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): 117
* 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'.
51065 * detected, using 175/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.002787, number_of_ambiguous_matches=444
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=47018 inliers=47018 rms 0.65 -> 0.28 pix, max corner correction 3.3 pix] fraction_of_ambiguous_matches= 0.002819, number_of_ambiguous_matches=449
47022 * matched, [CVPOLY iter 2: order=1 pairs=47022 inliers=47022 rms 0.29 -> 0.29 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.002819, number_of_ambiguous_matches=449
47022 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=47022 inliers=47022 rms 0.29 -> 0.29 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.002819, number_of_ambiguous_matches=449
47022 * matched (3rd iteration). Success!
rotation [degrees] = 176.003
51065 stars detected, 47022 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 39691, N_manually_selected_comparison_stars = 0
Using 39691 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 30683 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
delta_m = 0.00018*X_pix +0.00011*Y_pix -0.70575
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 30683 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.40
[01;31m ERROR!!! Magnitude calibration failure. Dropping image. [33;00m
159289 objects stored in memory (1000000 max.)
memory: 464180 kB used, 600628 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)
Processing /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.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: 2026-09-06T08:26:01.4636636
Setting observation time using DATE-OBS keyword: 2026-09-06T08:26:01.4636636
Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-06T08:26:01.463
EXPTIME = 20.000
Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
The star 1157.993 135.989 is rejected, see bad_region.lst
The star 1809.873 166.708 is rejected, see bad_region.lst
The star 8498.951 872.114 is rejected, see bad_region.lst
The star 1151.988 919.001 is rejected, see bad_region.lst
The star 192.129 1038.140 is rejected, see bad_region.lst
The star 4003.623 1322.064 is rejected, see bad_region.lst
The star 884.043 1377.015 is rejected, see bad_region.lst
The star 3619.015 1437.000 is rejected, see bad_region.lst
The star 351.947 1875.890 is rejected, see bad_region.lst
The star 2635.995 2108.028 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
* passed selection: 52840
* rejected as having no flux measurement: 0
* rejected as having SNR<3.0: 17
* rejected inside rectangles defined in bad_region.lst: 13
* rejected close to frame edge: 236
* rejected as being too small (<1.1 pix): 0
* rejected as being too large (>4.2 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): 130
* 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'.
52840 * detected, using 181/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.003120, number_of_ambiguous_matches=497
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=48512 inliers=48512 rms 0.58 -> 0.30 pix, max corner correction 3.4 pix] fraction_of_ambiguous_matches= 0.003095, number_of_ambiguous_matches=493
48516 * matched, [CVPOLY iter 2: order=1 pairs=48516 inliers=48516 rms 0.29 -> 0.29 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.003095, number_of_ambiguous_matches=493
48516 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=48516 inliers=48516 rms 0.29 -> 0.29 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.003095, number_of_ambiguous_matches=493
48516 * matched (3rd iteration). Success!
rotation [degrees] = 175.992
52840 stars detected, 48516 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 40894, N_manually_selected_comparison_stars = 0
Using 40894 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 32290 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
delta_m = 0.00017*X_pix +0.00009*Y_pix -0.64167
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 32290 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.39
[01;31m ERROR!!! Magnitude calibration failure. Dropping image. [33;00m
159289 objects stored in memory (1000000 max.)
memory: 464840 kB used, 600628 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 5 seconds
Done with measurements! =)
Total number of measurements 291743 (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 21557 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 35684 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 25210 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 18449 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 31554 stars
done! =)
TIMING select_aperture: 4 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: 131863 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-03-Q1b1x1 (less than 4 images processed)
exp_start= 18.07.2026 06:51:41.434 exp= 20.000 JD= 2461239.78601197 ap= 4.8 rotation= 0.000 *detected= 145432 *matched= 145432 status=OK /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-51-41_20.00sec_5.00C_LIGHT_0254.fits
exp_start= 18.07.2026 06:52:19.872 exp= 20.000 JD= 2461239.78645685 ap= 4.8 rotation= 0.000 *detected= 146311 *matched= 132454 status=OK /data_ssd/NMW-TexasTech/reference_imgs/Vul-03-Q1b1x1_2026-07-18_01-52-19_20.00sec_4.90C_LIGHT_0255.fits
exp_start= 06.09.2026 08:25:06.083 exp= 20.000 JD= 2461289.85088059 ap= 4.2 rotation= 176.003 *detected= 51065 *matched= 47022 status=ERROR /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-25-06_20.00sec_-0.00C_LIGHTs_0245.fits
exp_start= 06.09.2026 08:26:01.463 exp= 20.000 JD= 2461289.85152156 ap= 4.2 rotation= 175.992 *detected= 52840 *matched= 48516 status=ERROR /data_ssd/NMW-TexasTech/workdir//img_2026-09-06_CI_Vul-03-Q1b1x1_032646_TTUQ1b1x1_4183333_qE3viKqU/fd_Vul-03-Q1b1x1_2026-09-06_03-26-01_20.00sec_-0.00C_LIGHTs_0246.fits
########### Completed Vul-03-Q1b1x1 ###########
The analysis was running at tau
We are allowed to update the exclusion list at tau host
Found ../exclusion_list_TTUQ1.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