ERROR running VaST on the field Her-10-Q1b1x1 (wrong field? clouds? very bad focus?)
ERROR running VaST on the field Her-10-Q1b1x1 (wrong field? clouds? very bad focus?)

######## 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= /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= 15.0
FLAT_FIELD_FILE= /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-05-12.fit
FRAME_EDGE_OFFSET_PIX= 100
GAIA_BAND_FOR_CATALOGED_SOURCE_CHECK= 
MAX_NEW_TO_REF_MEAN_IMG_VALUE_RATIO= 100
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= 8000
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_SOFT_LIMIT= 4000
OMP_NUM_THREADS= 
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= 3.5
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: 
Her-10-Q1b1x1
#######################################
########### Starting Her-10-Q1b1x1 ###########
Processing Her-10-Q1b1x1
server tau has sufficient free disk space available: 1206446 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 1206446 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-03-26_06-31-11_20.00sec_-15.00C_LIGHT_0704.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.png' -> 'transient_report/Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits_preview.png'

Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits


renamed 'Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.png' -> 'transient_report/Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits_preview.png'

Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.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= 853.0365
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 719.8190
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 2122.1552
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 454.5920
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 2116.2986
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 451.3986
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 2.48777
INFO:                  SECOND_EPOCH__SD_ratio= 0.007
----------------------------------------------
Calibration settings: DARK_FRAMES_DIR=/var/www/nmw_calibration/TTUQ1b1x1/darks FLAT_FIELD_FILE=/var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-05-12.fit
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     18.2900009155273 / [degC] Focuser temperature
AMBTEMP =                 15.3 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.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= '2026-05-19T23:38:35.3695471' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-05-20T04:38:35.3695471' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =      61180.193464919 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-05-20T04:38:45.2738859' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61180.1935795485 / 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      =     279.996508068827 / [deg] RA of telescope" status=0
Record 32: "DEC     =     14.0000854165267 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     20.3555555555556 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =              86.3925 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.85439257046224 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'West'               / 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  = 'Her-10'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '18 40 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+14 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  =                29419 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                29419 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     18.2900009155273 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     18.2900009155273 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                  5.8 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 53.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               903.59 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 15.3 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                282.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=            16.601328 / [kph] Wind gust" status=0
Record 61: "WINDSPD =            10.400832 / [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_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-05-13.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-05-13.fit
Reading dark frame /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-05-13.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/d_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits :)

Spent 0.565505 seconds 
renamed 'mdark_TTUQ1b1x1_0C_20s_2026-05-13.png' -> 'transient_report/dark.png'
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/d_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-05-12.fit 9576 6388  16 bitpix
Avarage count on flat field image: 38180.487059
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits :)


No overscan detected - all values seem high! (left_median=24939.0, right_median=28319.0)
renamed 'mff_TTUQ1b1x1_2026-05-12.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                  0.0 / [degC] CCD temperature
FOCTEMP =     18.2900009155273 / [degC] Focuser temperature
AMBTEMP =                 15.3 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits 
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.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= '2026-05-19T23:39:16.3433138' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-05-20T04:39:16.3433138' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =      61180.193939155 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-05-20T04:39:26.2461319' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61180.1940537733 / 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      =     279.996508007212 / [deg] RA of telescope" status=0
Record 32: "DEC     =      14.000085393954 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     20.4936111111111 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     86.4819444444445 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.83628754911145 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'West'               / 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  = 'Her-10'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '18 40 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+14 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  =                29419 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                29419 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     18.2900009155273 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     18.2900009155273 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                  5.8 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 53.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               903.59 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 15.3 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                282.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=            16.601328 / [kph] Wind gust" status=0
Record 61: "WINDSPD =            10.400832 / [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_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-05-13.fit
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-05-13.fit
Reading dark frame /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-05-13.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/d_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits :)

Spent 0.559327 seconds 
renamed 'mdark_TTUQ1b1x1_0C_20s_2026-05-13.png' -> 'transient_report/dark.png'
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/d_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-05-12.fit 9576 6388  16 bitpix
Avarage count on flat field image: 38180.487059
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits :)


No overscan detected - all values seem high! (left_median=24939.0, right_median=28319.0)
renamed 'mff_TTUQ1b1x1_2026-05-12.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.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_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits
Previews of the CALIBRATED second-epoch images:


fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits



fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.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 --norotation --noflagimage --starmatchraius 3.5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-03-26_06-31-11_20.00sec_-15.00C_LIGHT_0704.fits /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits
  
Last  image: 2461180.69358066 20.05.2026 04:38:35.369 UTC
ERROR running VaST on the field Her-10-Q1b1x1 (wrong field? clouds? very bad focus? -- transient_factory_test31.txt)
____ VaST output ____

--==VaST 1.0rc90==--

Parsing command line arguments...
opt 'r': assuming no rotation larger than 15.0 degrees!
opt 'F': Will NOT create flag images for SExtractor
opt '5': 3.500000 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/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.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/Her-10-Q1b1x1_2026-03-26_06-31-11_20.00sec_-15.00C_LIGHT_0704.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_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk)...  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 --norotation --noflagimage --starmatchraius 3.5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-03-26_06-31-11_20.00sec_-15.00C_LIGHT_0704.fits /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.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:   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:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding image region:  1198.0  1171.0  1200.0  1173.0  (defined in bad_region.lst)
Excluding image region:  1329.0   615.0  1331.0   617.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 43 image regions  (defined in bad_region.lst).
Setting the fixed star match radius of 3.50 pix
We have 4 images to process.
SExtractor catalog cache: restored Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits catalog from cache
SExtractor catalog cache: restored Her-10-Q1b1x1_2026-03-26_06-31-11_20.00sec_-15.00C_LIGHT_0704.fits catalog from cache
The number of processor cores determined from /proc/cpuinfo is 24.
Running SExtractor in 4 parallel threads...
Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-03-26_06-31-11_20.00sec_-15.00C_LIGHT_0704.fits
Parent process says: we are done fork()ing.
Waiting for thread 3 to finish...
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
The above guess is based on the non-default gain value specified in default.sex by user
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.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_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.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:   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:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding image region:  1198.0  1171.0  1200.0  1173.0  (defined in bad_region.lst)
Excluding image region:  1329.0   615.0  1331.0   617.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 43 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_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.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:   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:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding image region:  1198.0  1171.0  1200.0  1173.0  (defined in bad_region.lst)
Excluding image region:  1329.0   615.0  1331.0   617.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 43 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_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 7.9,7.9,7.1,8.7,9.5,10.2 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 7.9,7.9,7.1,8.6,9.4,10.2 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
Waiting for thread 2 to finish...
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits


Done with SExtractor!

TIMING SExtractor: 2 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.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: 2026-02-27T11:45:10.4977356
Setting observation time using DATE-OBS keyword: 2026-02-27T11:45:10.4977356

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-02-27T11:45:10.497
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits
Exposure 20 sec, 27.02.2026 11:45:10.497 UTC = JD(UTC) 2461098.98982057 mid. exp.
The reference image star  8228.770   238.935 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 23191, (23191 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: 1
 * rejected close to frame edge: 126
 * rejected as being too small (<1.6 pix): 0
 * rejected as being too large (>6.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.98
Detection limit from the magnitude-SNR relation= -8.0  (5.0 sigma detection)
The simple faintest star detection limit= -10.0
80 percent brightest stars detection limit= -10.8
Selected detection limit= -10.8
Final detection limit= -10.8 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.06.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 27
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
    25102 * detected, using  541/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.001474, number_of_ambiguous_matches=37 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.001474, number_of_ambiguous_matches=37 
22317 * matched, fraction_of_ambiguous_matches= 0.001474, number_of_ambiguous_matches=37 
22317 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.001474, number_of_ambiguous_matches=37 
22317 * matched (3rd iteration). Success!
  rotation [degrees] =   0.066
    25102 stars detected, 22317 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 20071, N_manually_selected_comparison_stars = 0
Using 20071 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 20068 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix +0.00000*Y_pix +0.01990
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 20038 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.93
    25976 objects stored in memory (400000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  114116 kB used, 126792 kB peak, 65263856 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-05-20T04:38:35.3695471
Setting observation time using DATE-OBS keyword: 2026-05-20T04:38:35.3695471

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-05-20T04:38:35.369
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
SExtractor output filtering results:
 * passed selection: 2229
 * 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: 15
 * rejected as being too small (<2.0 pix): 0
 * rejected as being too large (>7.9 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): 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'.
     2229 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.000038, number_of_ambiguous_matches=1 
2142 * matched, fraction_of_ambiguous_matches= 0.000038, number_of_ambiguous_matches=1 
2142 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.000038, number_of_ambiguous_matches=1 
2142 * matched (3rd iteration). Success!
  rotation [degrees] =  -2.758
     2229 stars detected,  2142 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1630, N_manually_selected_comparison_stars = 0
Using 1630 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 1543 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00013*X_pix -0.00010*Y_pix +0.16742
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 1543 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.40
 ERROR!!! Magnitude calibration failure. Dropping image. 
    25976 objects stored in memory (400000 max.)
memory:  118992 kB used, 126792 kB peak, 65263856 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-05-20T04:39:16.3433138
Setting observation time using DATE-OBS keyword: 2026-05-20T04:39:16.3433138

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-05-20T04:39:16.343
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits
SExtractor output filtering results:
 * passed selection: 2282
 * 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: 15
 * rejected as being too small (<2.0 pix): 0
 * rejected as being too large (>7.9 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): 1
 * 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'.
     2282 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000038, number_of_ambiguous_matches=1 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.000038, number_of_ambiguous_matches=1 
2196 * matched, fraction_of_ambiguous_matches= 0.000038, number_of_ambiguous_matches=1 
2196 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.000038, number_of_ambiguous_matches=1 
2196 * matched (3rd iteration). Success!
  rotation [degrees] =  -2.749
     2282 stars detected,  2196 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1671, N_manually_selected_comparison_stars = 0
Using 1671 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 1599 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00014*X_pix -0.00010*Y_pix +0.14664
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 1599 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.41
 ERROR!!! Magnitude calibration failure. Dropping image. 
    25976 objects stored in memory (400000 max.)
memory:  118992 kB used, 126792 kB peak, 65263856 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 0 seconds
Done with measurements! =)

Total number of measurements 48293 (48293 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 1 seconds
The lightcurve files have been written, freeing up more memory...
Creating vast_image_details.log ... 

Writing summary file: vast_summary.log ...  OK
Selecting the best aperture for each source
Aperture with index 0 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for  4217 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  5178 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  6258 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  2543 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  4121 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: 22120 objects, the longest string is 385 bytes.
Allocating memory for resorting the file.
Variability index idx00_STD  is enabled
Variability index idx01_wSTD is enabled
Variability index idx08_Npts is enabled
Variability index idx09_MAD  is enabled
Variability index idx11_RoMS is enabled
Variability index idx12_rCh2 is enabled
Variability index idx17_Jtim is enabled
Variability index idx18_Ltim is enabled
Variability index idx21_eta  is enabled
Variability index idx23_S_B  is enabled
Variability index idx25_IQR  is enabled
Computing the expected values of variability indexes and their scatter as a function of magnitude
..........
..........
..........
..........
Wriring the list of candidate variables to vast_autocandidates.log ..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................



----***** 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)
_____________________
wait
*------ default.sex.telephoto_lens_vSTL ------*
'default.sex.telephoto_lens_vSTL' -> 'default.sex'
Starting VaST with default.sex.telephoto_lens_vSTL

  ./vast --norotation --noflagimage --starmatchraius 3.5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-03-26_06-31-11_20.00sec_-15.00C_LIGHT_0704.fits /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits
  
Last  image: 2461180.69358066 20.05.2026 04:38:35.369 UTC
ERROR running VaST on the field Her-10-Q1b1x1 (wrong field? clouds? very bad focus? -- transient_factory_test31.txt)
____ VaST output ____

--==VaST 1.0rc90==--

Parsing command line arguments...
opt 'r': assuming no rotation larger than 15.0 degrees!
opt 'F': Will NOT create flag images for SExtractor
opt '5': 3.500000 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/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.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/Her-10-Q1b1x1_2026-03-26_06-31-11_20.00sec_-15.00C_LIGHT_0704.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_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk)...  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 --norotation --noflagimage --starmatchraius 3.5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-03-26_06-31-11_20.00sec_-15.00C_LIGHT_0704.fits /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.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:   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:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding image region:  1198.0  1171.0  1200.0  1173.0  (defined in bad_region.lst)
Excluding image region:  1329.0   615.0  1331.0   617.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 43 image regions  (defined in bad_region.lst).
Setting the fixed star match radius of 3.50 pix
We have 4 images to process.
SExtractor catalog cache: restored Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits catalog from cache
SExtractor catalog cache: restored Her-10-Q1b1x1_2026-03-26_06-31-11_20.00sec_-15.00C_LIGHT_0704.fits catalog from cache
The number of processor cores determined from /proc/cpuinfo is 24.
Running SExtractor in 4 parallel threads...
Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-03-26_06-31-11_20.00sec_-15.00C_LIGHT_0704.fits
Parent process says: we are done fork()ing.
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1Waiting for thread 3 to finish...
b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
The above guess is based on the non-default gain value specified in default.sex by user
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.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_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.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:   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:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding image region:  1198.0  1171.0  1200.0  1173.0  (defined in bad_region.lst)
Excluding image region:  1329.0   615.0  1331.0   617.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 43 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_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.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:   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:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding image region:  1198.0  1171.0  1200.0  1173.0  (defined in bad_region.lst)
Excluding image region:  1329.0   615.0  1331.0   617.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 43 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_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.1,6.1,5.5,6.7,7.4,8.0 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.1,6.1,5.5,6.7,7.3,7.9 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
Waiting for thread 2 to finish...
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits


Done with SExtractor!

TIMING SExtractor: 6 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.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: 2026-02-27T11:45:10.4977356
Setting observation time using DATE-OBS keyword: 2026-02-27T11:45:10.4977356

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-02-27T11:45:10.497
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-10-Q1b1x1_2026-02-27_05-45-10_20.00sec_-14.90C_LIGHT_0288.fits
Exposure 20 sec, 27.02.2026 11:45:10.497 UTC = JD(UTC) 2461098.98982057 mid. exp.
The reference image star  8497.232   869.096 is rejected, see bad_region.lst
The reference image star  3617.849  1435.225 is rejected, see bad_region.lst
The reference image star  6850.329  4572.008 is rejected, see bad_region.lst
The reference image star  1546.112  5512.434 is rejected, see bad_region.lst
The reference image star  1977.096  6111.930 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 217868, (217868 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 51
 * rejected inside rectangles defined in bad_region.lst: 5
 * rejected close to frame edge: 866
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.7 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): 14
 * 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: -7.61
Detection limit from the magnitude-SNR relation= -7.6  (5.0 sigma detection)
The simple faintest star detection limit= -6.8
80 percent brightest stars detection limit= -8.1
Selected detection limit= -8.1
Final detection limit= -8.1 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.04.7 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): 21
 * 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'.
    227794 * detected, using  522/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.009254, number_of_ambiguous_matches=2108 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.009285, number_of_ambiguous_matches=2115 
199865 * matched, fraction_of_ambiguous_matches= 0.009285, number_of_ambiguous_matches=2115 
199865 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.009285, number_of_ambiguous_matches=2115 
199865 * matched (3rd iteration). Success!
  rotation [degrees] =   0.067
    227794 stars detected, 199865 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 163252, N_manually_selected_comparison_stars = 0
Using 163252 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 163237 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix -0.00000*Y_pix +0.02530
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 156838 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.56
    245797 objects stored in memory (400000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  263200 kB used, 293920 kB peak, 65263856 kB available RAM
Total number of measurements 445662 (445662 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_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-05-20T04:38:35.3695471
Setting observation time using DATE-OBS keyword: 2026-05-20T04:38:35.3695471

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-05-20T04:38:35.369
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-38-35_20.00sec_-0.00C_LIGHTs_0124.fits
The star  8497.986   872.005 is rejected, see bad_region.lst
The star   188.906  1038.792 is rejected, see bad_region.lst
The star  3619.011  1436.996 is rejected, see bad_region.lst
The star  4923.005  2427.973 is rejected, see bad_region.lst
The star   725.303  2731.999 is rejected, see bad_region.lst
The star  3303.856  3305.088 is rejected, see bad_region.lst
The star  7038.997  5905.999 is rejected, see bad_region.lst
The star  2859.998  5866.999 is rejected, see bad_region.lst
The star  8665.027  5468.590 is rejected, see bad_region.lst
The star  5281.966  5086.106 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 16600
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 6
 * rejected inside rectangles defined in bad_region.lst: 15
 * rejected close to frame edge: 85
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>6.1 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 47
 * 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'.
    16600 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000053, number_of_ambiguous_matches=13 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.000045, number_of_ambiguous_matches=11 
15922 * matched, fraction_of_ambiguous_matches= 0.000045, number_of_ambiguous_matches=11 
15922 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.000045, number_of_ambiguous_matches=11 
15922 * matched (3rd iteration). Success!
  rotation [degrees] =  -2.758
    16600 stars detected, 15922 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 11498, N_manually_selected_comparison_stars = 0
Using 11498 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 10097 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00017*X_pix -0.00015*Y_pix +0.25318
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 10097 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.14
 ERROR!!! Magnitude calibration failure. Dropping image. 
    245797 objects stored in memory (400000 max.)
memory:  1915916 kB used, 1959036 kB peak, 65263856 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-05-20T04:39:16.3433138
Setting observation time using DATE-OBS keyword: 2026-05-20T04:39:16.3433138

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-05-20T04:39:16.343
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-05-19_CI_Her-10-Q1b1x1_234001_TTUQ1b1x1_928340_Ezd9evmk/fd_Her-10-Q1b1x1_2026-05-19_23-39-16_20.00sec_0.00C_LIGHTs_0125.fits
The star  1159.959   135.240 is rejected, see bad_region.lst
The star  8498.000   871.984 is rejected, see bad_region.lst
The star   883.999  1377.020 is rejected, see bad_region.lst
The star  3619.019  1437.010 is rejected, see bad_region.lst
The star  2636.003  2108.010 is rejected, see bad_region.lst
The star  4923.013  2428.004 is rejected, see bad_region.lst
The star   725.002  2731.986 is rejected, see bad_region.lst
The star  7039.002  5905.991 is rejected, see bad_region.lst
The star  2859.997  5867.008 is rejected, see bad_region.lst
The star  6851.997  4571.982 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 17150
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 4
 * rejected inside rectangles defined in bad_region.lst: 15
 * rejected close to frame edge: 87
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>6.1 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 47
 * 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'.
    17150 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000053, number_of_ambiguous_matches=13 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.000057, number_of_ambiguous_matches=14 
16480 * matched, fraction_of_ambiguous_matches= 0.000057, number_of_ambiguous_matches=14 
16480 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.000057, number_of_ambiguous_matches=14 
16480 * matched (3rd iteration). Success!
  rotation [degrees] =  -2.761
    17150 stars detected, 16480 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 11881, N_manually_selected_comparison_stars = 0
Using 11881 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 10548 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00016*X_pix -0.00014*Y_pix +0.21396
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 10548 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.13
 ERROR!!! Magnitude calibration failure. Dropping image. 
    245797 objects stored in memory (400000 max.)
memory:  1916180 kB used, 1959036 kB peak, 65263856 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 6 seconds
Done with measurements! =)

Total number of measurements 445662 (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 31701 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 54269 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 40170 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 26274 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 47451 stars

done!  =)
TIMING select_aperture: 7 seconds
Computing lightcurve statistics...  Will not compute variability indexes for objects having <1 points in lightcurve
You may disable this by commenting out the line '#define DROP_LIGHTCURVES_WITH_SMALL_NUMBER_OF_POINTS_FROM_ALL_PLOTS' in src/vast_limits.h an re-compiling VaST with 'make'

Computing, please wait a bit
......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 199005 objects, the longest string is 385 bytes.
Allocating memory for resorting the file.
Variability index idx00_STD  is enabled
Variability index idx01_wSTD is enabled
Variability index idx08_Npts is enabled
Variability index idx09_MAD  is enabled
Variability index idx11_RoMS is enabled
Variability index idx12_rCh2 is enabled
Variability index idx17_Jtim is enabled
Variability index idx18_Ltim is enabled
Variability index idx21_eta  is enabled
Variability index idx23_S_B  is enabled
Variability index idx25_IQR  is enabled
Computing the expected values of variability indexes and their scatter as a function of magnitude
..........
..........
..........
..........
Wriring the list of candidate variables to vast_autocandidates.log .........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................



----***** 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)
_____________________
########### Completed Her-10-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

=== Transient Factory Profiling ===
Started: Tue May 19 23:43:09 CDT 2026
=======================================
FIELD_Her-10-Q1b1x1: 404s (6.73 min)
=======================================
TOTAL_RUNTIME: 407s (6.78 min)
Finished: Tue May 19 23:49:56 CDT 2026