ERROR running VaST on the field Lyn-03-Q2b1x1 (wrong field? clouds? very bad focus?)
ERROR running VaST on the field Lyn-03-Q2b1x1 (wrong field? clouds? very bad focus?)

######## Processing parameters ########
AAVSO_COMMENT_STRING= NMW-TexasTech Camera-2 135mm f/2.2 telephoto lens + QHY600M CMOS
ASTCHECK_ASTEROID_SEARCH_RADIUS_ARCSEC= 
BAD_REGION_FILE= /var/www/nmw_calibration/TTUQ2b1x1/TTUQ2_bad_region.lst
CAMERA_SETTINGS= TTUQ2b1x1
CHECK_POINTING_ACCURACY= yes
DARK_FRAMES_DIR= /var/www/nmw_calibration/TTUQ2b1x1/darks
EXCLUSION_LIST= ../exclusion_list_TTUQ2.txt
FILTER_BAD_IMG__MAX_APERTURE_STAR_SIZE_PIX= 12.5
FILTER_BAD_IMG__MAX_ELONGATION_AminusB_PIX= 0.55
FILTER_BAD_IMG__MIN_APERTURE_STAR_SIZE_PIX= 2.0
FILTER_BRIGHT_MAG_CUTOFF_TRANSIENT_SEARCH= -5
FILTER_FAINT_MAG_CUTOFF_TRANSIENT_SEARCH= 15.0
FLAT_FIELD_FILE= /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-03-20.fit
FRAME_EDGE_OFFSET_PIX= 600
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= 3000
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_SOFT_LIMIT= 2000
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= 4
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: 
Lyn-03-Q2b1x1
#######################################
########### Starting Lyn-03-Q2b1x1 ###########
Processing Lyn-03-Q2b1x1
server tau has sufficient free disk space available: 598116 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 598116 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-10-43_20.00sec_-15.00C_LIGHT_0258.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.png' -> 'transient_report/Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits_preview.png'

Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits


renamed 'Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.png' -> 'transient_report/Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits_preview.png'

Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.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= 473.5374
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 639.0073
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 3084.8288
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 808.2073
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 2974.7639
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 752.2235
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 6.51444
INFO:                  SECOND_EPOCH__SD_ratio= 0.074
----------------------------------------------
Calibration settings: DARK_FRAMES_DIR=/var/www/nmw_calibration/TTUQ2b1x1/darks FLAT_FIELD_FILE=/var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-03-20.fit
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                 -5.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -5.0 / [degC] CCD temperature
AMBTEMP =                 10.2 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits 
CCD-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
SET-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
Header: 68 keys total, 3 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= '2026-04-05T00:18:12.8640663' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-04-05T05:18:12.8640663' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61135.2209822224 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-04-05T05:18:22.7648084' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61135.2210968058 / Modified Julian Date of averaged midpoint" status=0
Record 16: "XBINNING=                    1 / X axis binning factor" status=0
Record 17: "YBINNING=                    1 / Y axis binning factor" status=0
Record 18: "GAIN    =                   30 / Sensor gain" status=0
Record 19: "OFFSET  =                   30 / Sensor gain offset" status=0
Record 20: "XPIXSZ  =                 3.76 / [um] Pixel X axis size" status=0
Record 21: "YPIXSZ  =                 3.76 / [um] Pixel Y axis size" status=0
Record 22: "INSTRUME= 'QHY600M'            / Imaging instrument name" status=0
Record 23: "CAMERAID= 'QHY600M-84137c4dbbbd119a9' / Imaging instrument identifier" status=0
Record 24: "SET-TEMP=                 -5.0 / [degC] CCD temperature setpoint" status=0
Record 25: "CCD-TEMP=                 -5.0 / [degC] CCD temperature" status=0
Record 26: "READOUTM= '2CMS-0'             / Sensor readout mode" status=0
Record 27: "USBLIMIT=                   50 / Camera-specific USB setting" status=0
Record 28: "TELESCOP= 'QHY600M-TTU2'       / Name of telescope" status=0
Record 29: "FOCALLEN=                135.0 / [mm] Focal length" status=0
Record 30: "FOCRATIO=                  2.2 / Focal ratio" status=0
Record 31: "RA      =     108.004149311944 / [deg] RA of telescope" status=0
Record 32: "DEC     =     45.9997130117232 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     41.6227777777778 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     304.251111111111 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     1.50367420503256 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Lyn-03'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '07 12 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+46 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: "DEWPOINT=                  0.8 / [degC] Dew point" status=0
Record 50: "HUMIDITY=                 52.0 / [percent] Relative humidity" status=0
Record 51: "PRESSURE=               910.09 / [hPa] Air pressure" status=0
Record 52: "AMBTEMP =                 10.2 / [degC] Ambient air temperature" status=0
Record 53: "WINDDIR =                338.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 54: "WINDGUST=             5.400432 / [kph] Wind gust" status=0
Record 55: "WINDSPD =              4.00032 / [kph] Wind speed" status=0
Record 56: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 57: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 58: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 59: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 60: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 61: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 62: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 63: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 64: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 65: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 66: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 67: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 68: "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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits 9576 6388  16 bitpix
SET-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
SET-TEMP= -5.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-03-21.fit
CCD-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
CCD-TEMP= -4.900000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-03-21.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-03-21.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/d_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits :)

Spent 0.504789 seconds 
renamed 'mdark_TTUQ2b1x1_-5C_20s_2026-03-21.png' -> 'transient_report/dark.png'
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/d_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-03-20.fit 9576 6388  16 bitpix
Avarage count on flat field image: 37165.080609
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits :)


No overscan detected - all values seem high! (left_median=23810.0, right_median=27365.5)
renamed 'mff_TTUQ2b1x1_2026-03-20.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                 -5.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -4.9 / [degC] CCD temperature
AMBTEMP =                 10.2 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits 
CCD-TEMP= -4.900000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
SET-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
Header: 68 keys total, 3 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= '2026-04-05T00:18:56.0562780' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-04-05T05:18:56.0562780' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61135.2214821298 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-04-05T05:19:05.9564320' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61135.2215967132 / Modified Julian Date of averaged midpoint" status=0
Record 16: "XBINNING=                    1 / X axis binning factor" status=0
Record 17: "YBINNING=                    1 / Y axis binning factor" status=0
Record 18: "GAIN    =                   30 / Sensor gain" status=0
Record 19: "OFFSET  =                   30 / Sensor gain offset" status=0
Record 20: "XPIXSZ  =                 3.76 / [um] Pixel X axis size" status=0
Record 21: "YPIXSZ  =                 3.76 / [um] Pixel Y axis size" status=0
Record 22: "INSTRUME= 'QHY600M'            / Imaging instrument name" status=0
Record 23: "CAMERAID= 'QHY600M-84137c4dbbbd119a9' / Imaging instrument identifier" status=0
Record 24: "SET-TEMP=                 -5.0 / [degC] CCD temperature setpoint" status=0
Record 25: "CCD-TEMP=                 -4.9 / [degC] CCD temperature" status=0
Record 26: "READOUTM= '2CMS-0'             / Sensor readout mode" status=0
Record 27: "USBLIMIT=                   50 / Camera-specific USB setting" status=0
Record 28: "TELESCOP= 'QHY600M-TTU2'       / Name of telescope" status=0
Record 29: "FOCALLEN=                135.0 / [mm] Focal length" status=0
Record 30: "FOCRATIO=                  2.2 / Focal ratio" status=0
Record 31: "RA      =     108.004149362357 / [deg] RA of telescope" status=0
Record 32: "DEC     =     45.9997130155208 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     41.4966666666667 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     304.276944444444 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     1.50739628594274 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Lyn-03'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '07 12 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+46 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: "DEWPOINT=                  0.8 / [degC] Dew point" status=0
Record 50: "HUMIDITY=                 52.0 / [percent] Relative humidity" status=0
Record 51: "PRESSURE=               910.09 / [hPa] Air pressure" status=0
Record 52: "AMBTEMP =                 10.2 / [degC] Ambient air temperature" status=0
Record 53: "WINDDIR =                338.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 54: "WINDGUST=             5.400432 / [kph] Wind gust" status=0
Record 55: "WINDSPD =              4.00032 / [kph] Wind speed" status=0
Record 56: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 57: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 58: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 59: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 60: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 61: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 62: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 63: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 64: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 65: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 66: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 67: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 68: "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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits 9576 6388  16 bitpix
SET-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
SET-TEMP= -5.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-03-21.fit
CCD-TEMP= -4.900000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
CCD-TEMP= -4.900000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-03-21.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-03-21.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/d_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits :)

Spent 0.510972 seconds 
renamed 'mdark_TTUQ2b1x1_-5C_20s_2026-03-21.png' -> 'transient_report/dark.png'
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/d_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-03-20.fit 9576 6388  16 bitpix
Avarage count on flat field image: 37165.080609
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits :)


No overscan detected - all values seem high! (left_median=23810.0, right_median=27365.5)
renamed 'mff_TTUQ2b1x1_2026-03-20.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
Previews of the CALIBRATED second-epoch images:


fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits



fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits




Updating neverexclude_list.txt
'/var/www/nmw_calibration/neverexclude_list.txt' -> './neverexclude_list.txt'
Choosing bad regions list
'/var/www/nmw_calibration/TTUQ2b1x1/TTUQ2_bad_region.lst' -> 'bad_region.lst'
wait
*------ default.sex.telephoto_lens_onlybrightstars_v1 ------*
'default.sex.telephoto_lens_onlybrightstars_v1' -> 'default.sex'
Starting VaST with default.sex.telephoto_lens_onlybrightstars_v1

  ./vast --norotation --noflagimage --starmatchraius 4 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-10-43_20.00sec_-15.00C_LIGHT_0258.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
  
Last  image: 2461135.72109796 05.04.2026 05:18:12.864 UTC
ERROR running VaST on the field Lyn-03-Q2b1x1 (wrong field? clouds? very bad focus? -- transient_factory_test31.txt)
____ VaST output ____

--==VaST 1.0rc89==--

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': 4.000000 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/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.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/Lyn-03-Q2b1x1_2026-01-18_00-10-43_20.00sec_-15.00C_LIGHT_0258.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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO)...  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 4 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-10-43_20.00sec_-15.00C_LIGHT_0258.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits 


Preparing to process 4 input FITS images...


######## Forcing special settings for the transient detection ########
transient search mode: disabling the mag-size filter as it should be switched off when running a transient search!
transient search mode: disabling the bad image filter as it will not help during the transient search!
transient search mode: will not try to gues image saturation limit
transient search mode: no UTC-to-TT time system conversion will be performed!!!
transient search mode: setting the maximum acceptable SExtractor flag to 3
transient search mode: disabling rejectin of images with elliptical stars
transient search mode: not discarding large sources
################
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  8500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  2000.0  (defined in bad_region.lst)
Setting the fixed star match radius of 4.00 pix
We have 4 images to process.
SExtractor catalog cache: restored Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits catalog from cache
SExtractor catalog cache: restored Lyn-03-Q2b1x1_2026-01-18_00-10-43_20.00sec_-15.00C_LIGHT_0258.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/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-10-43_20.00sec_-15.00C_LIGHT_0258.fits
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.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 3 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  8500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  2000.0  (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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits > image00003.cat.sex_log 2>&1
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  8500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  2000.0  (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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.2,6.2,5.6,6.8,7.4,8.0 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.2,6.2,5.6,6.8,7.4,8.0 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
Waiting for thread 2 to finish...
Waiting for thread 1 to finish...


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/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.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: 2026-01-18T06:09:58.8591481
Setting observation time using DATE-OBS keyword: 2026-01-18T06:09:58.8591481

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-01-18T06:09:58.859
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits
Exposure 20 sec, 18.01.2026 06:09:58.859 UTC = JD(UTC) 2461058.75704698 mid. exp.
The reference image star  8394.282    17.694 is rejected, see bad_region.lst
The reference image star  8464.758    17.161 is rejected, see bad_region.lst
The reference image star  7589.165    12.721 is rejected, see bad_region.lst
The reference image star  8154.322     8.504 is rejected, see bad_region.lst
The reference image star  8107.104     6.707 is rejected, see bad_region.lst
The reference image star  8136.836     3.371 is rejected, see bad_region.lst
The reference image star  7507.700    16.528 is rejected, see bad_region.lst
The reference image star  8949.090    20.136 is rejected, see bad_region.lst
The reference image star  8542.673    28.001 is rejected, see bad_region.lst
The reference image star  8267.988    24.837 is rejected, see bad_region.lst
Excluding more reference image stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 14737, (14737 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: 2124
 * rejected close to frame edge: 66
 * rejected as being too small (<1.6 pix): 0
 * rejected as being too large (>6.2 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 5
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.49
Detection limit from the magnitude-SNR relation= -7.5  (5.0 sigma detection)
The simple faintest star detection limit= -9.6
80 percent brightest stars detection limit= -10.4
Selected detection limit= -10.4
Final detection limit= -10.4 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.06.2 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
    14622 * detected, using  496/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.001018, number_of_ambiguous_matches=15 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.001018, number_of_ambiguous_matches=15 
13872 * matched, fraction_of_ambiguous_matches= 0.001018, number_of_ambiguous_matches=15 
13872 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.001018, number_of_ambiguous_matches=15 
13872 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.007
    14622 stars detected, 13872 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 12646, N_manually_selected_comparison_stars = 0
Using 12646 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 12646 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00000*X_pix -0.00000*Y_pix +0.00029
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 12645 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.49
    15487 objects stored in memory (400000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  109392 kB used, 119552 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.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: 2026-04-05T05:18:12.8640663
Setting observation time using DATE-OBS keyword: 2026-04-05T05:18:12.8640663

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-04-05T05:18:12.864
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
The star  8011.725    14.453 is rejected, see bad_region.lst
The star  8866.079    12.255 is rejected, see bad_region.lst
The star  9323.075     9.788 is rejected, see bad_region.lst
The star  8633.115    23.141 is rejected, see bad_region.lst
The star  8659.408    40.435 is rejected, see bad_region.lst
The star  7633.549    42.581 is rejected, see bad_region.lst
The star  9498.779    61.800 is rejected, see bad_region.lst
The star  8612.878    61.535 is rejected, see bad_region.lst
The star  8027.679    55.996 is rejected, see bad_region.lst
The star  8950.854    63.747 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 494
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 604
 * rejected close to frame edge: 1
 * rejected as being too small (<1.6 pix): 0
 * rejected as being too large (>6.2 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
      494 * detected, using  100/ 494 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
412 * matched, fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
412 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
412 * matched (3rd iteration). Success!
  rotation [degrees] = 176.547
      494 stars detected,   412 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 227, N_manually_selected_comparison_stars = 0
Using 227 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 209 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00019*X_pix +0.00012*Y_pix +1.03787
ERROR in magnitude calibration: fabs(lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 209 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.38
 ERROR!!! Magnitude calibration failure. Dropping image. 
    15487 objects stored in memory (400000 max.)
The transient candidate (new frame position  1593.569  6032.520 ; ref frame position:  7795.677   178.934) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1327.626  4399.999 ; ref frame position:  8158.099  1785.204) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1206.266  5299.663 ; ref frame position:  8224.701   883.927) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1110.760  4849.435 ; ref frame position:  8346.683  1325.585) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1398.286  5818.872 ; ref frame position:  8002.634   379.515) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1807.545  5252.619 ; ref frame position:  7629.814   966.761) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1039.341  5972.201 ; ref frame position:  8350.240   205.610) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1809.013  5242.284 ; ref frame position:  7628.976   977.118) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1037.339  5413.912 ; ref frame position:  8385.764   760.260) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1638.137  5458.074 ; ref frame position:  7785.876   752.433) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1872.684  5256.718 ; ref frame position:  7564.815   966.596) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1073.269  4758.594 ; ref frame position:  8389.407  1413.604) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1331.893  4730.640 ; ref frame position:  8133.998  1456.902) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1848.187  4365.653 ; ref frame position:  7642.689  1850.574) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1367.561  4347.138 ; ref frame position:  8121.576  1840.128) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1252.001  5945.087 ; ref frame position:  8140.471   245.316) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1202.167  4655.678 ; ref frame position:  8267.456  1523.606) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
memory:  110372 kB used, 119552 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.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: 2026-04-05T05:18:56.0562780
Setting observation time using DATE-OBS keyword: 2026-04-05T05:18:56.0562780

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-04-05T05:18:56.056
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
The star  8866.153    14.321 is rejected, see bad_region.lst
The star  9323.138    11.810 is rejected, see bad_region.lst
The star  8431.097    10.192 is rejected, see bad_region.lst
The star  9345.554     4.306 is rejected, see bad_region.lst
The star  8633.248    25.102 is rejected, see bad_region.lst
The star  8011.918    16.429 is rejected, see bad_region.lst
The star  7605.093    32.352 is rejected, see bad_region.lst
The star  8659.553    42.437 is rejected, see bad_region.lst
The star  7633.706    44.566 is rejected, see bad_region.lst
The star  8932.112    47.434 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 601
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 770
 * rejected close to frame edge: 2
 * rejected as being too small (<1.6 pix): 0
 * rejected as being too large (>6.2 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
      601 * 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= 0.000000, number_of_ambiguous_matches=0 
517 * matched, fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
517 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
517 * matched (3rd iteration). Success!
  rotation [degrees] = 176.552
      601 stars detected,   517 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 278, N_manually_selected_comparison_stars = 0
Using 278 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 246 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00024*X_pix +0.00005*Y_pix +1.55291
ERROR in magnitude calibration: fabs(lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 246 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.35
 ERROR!!! Magnitude calibration failure. Dropping image. 
    15487 objects stored in memory (400000 max.)
memory:  110372 kB used, 119552 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 29359 (29359 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  3205 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  3637 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  1986 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  2540 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  2504 stars

done!  =)
TIMING select_aperture: 0 seconds
WARNING: Can't open candidates-transients.lst for reading! -- No candidates found?
Non-zero exit code of lib/transient_list
ERROR running  lib/create_list_of_candidate_transients.sh
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: 13733 objects, the longest string is 383 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 4 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-10-43_20.00sec_-15.00C_LIGHT_0258.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
  
Last  image: 2461135.72109796 05.04.2026 05:18:12.864 UTC
ERROR running VaST on the field Lyn-03-Q2b1x1 (wrong field? clouds? very bad focus? -- transient_factory_test31.txt)
____ VaST output ____

--==VaST 1.0rc89==--

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': 4.000000 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/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.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/Lyn-03-Q2b1x1_2026-01-18_00-10-43_20.00sec_-15.00C_LIGHT_0258.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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO)...  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 4 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-10-43_20.00sec_-15.00C_LIGHT_0258.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits 


Preparing to process 4 input FITS images...


######## Forcing special settings for the transient detection ########
transient search mode: disabling the mag-size filter as it should be switched off when running a transient search!
transient search mode: disabling the bad image filter as it will not help during the transient search!
transient search mode: will not try to gues image saturation limit
transient search mode: no UTC-to-TT time system conversion will be performed!!!
transient search mode: setting the maximum acceptable SExtractor flag to 3
transient search mode: disabling rejectin of images with elliptical stars
transient search mode: not discarding large sources
################
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  8500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  2000.0  (defined in bad_region.lst)
Setting the fixed star match radius of 4.00 pix
We have 4 images to process.
SExtractor catalog cache: restored Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits catalog from cache
SExtractor catalog cache: restored Lyn-03-Q2b1x1_2026-01-18_00-10-43_20.00sec_-15.00C_LIGHT_0258.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/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-10-43_20.00sec_-15.00C_LIGHT_0258.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.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.
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1Waiting for thread 3 to finish...
_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  8500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  2000.0  (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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  8500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  2000.0  (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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.4,4.4,4.0,4.9,5.3,5.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.4,4.4,4.0,4.9,5.3,5.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits


Done with SExtractor!

TIMING SExtractor: 4 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/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.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: 2026-01-18T06:09:58.8591481
Setting observation time using DATE-OBS keyword: 2026-01-18T06:09:58.8591481

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-01-18T06:09:58.859
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-03-Q2b1x1_2026-01-18_00-09-58_20.00sec_-15.00C_LIGHT_0257.fits
Exposure 20 sec, 18.01.2026 06:09:58.859 UTC = JD(UTC) 2461058.75704698 mid. exp.
The reference image star  8542.669    28.003 is rejected, see bad_region.lst
The reference image star  8949.088    20.137 is rejected, see bad_region.lst
The reference image star  8394.279    17.695 is rejected, see bad_region.lst
The reference image star  8464.754    17.164 is rejected, see bad_region.lst
The reference image star  7507.660    16.548 is rejected, see bad_region.lst
The reference image star  7983.189    14.828 is rejected, see bad_region.lst
The reference image star  7589.160    12.725 is rejected, see bad_region.lst
The reference image star  8818.232    12.412 is rejected, see bad_region.lst
The reference image star  8154.319     8.505 is rejected, see bad_region.lst
The reference image star  8730.067     9.981 is rejected, see bad_region.lst
Excluding more reference image stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 96963, (96963 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 41
 * rejected inside rectangles defined in bad_region.lst: 10098
 * rejected close to frame edge: 464
 * 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): 136
 * 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: -7.18
Detection limit from the magnitude-SNR relation= -7.2  (5.0 sigma detection)
The simple faintest star detection limit= -6.5
80 percent brightest stars detection limit= -7.7
Selected detection limit= -7.7
Final detection limit= -7.7 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.04.6 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 110
 * 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'.
    97758 * detected, using  504/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.005514, number_of_ambiguous_matches=539 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.005432, number_of_ambiguous_matches=531 
89222 * matched, fraction_of_ambiguous_matches= 0.005432, number_of_ambiguous_matches=531 
89222 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.005432, number_of_ambiguous_matches=531 
89222 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.007
    97758 stars detected, 89222 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 79985, N_manually_selected_comparison_stars = 0
Using 79985 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 79981 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00000*X_pix -0.00000*Y_pix -0.00183
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 75360 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.15
    105499 objects stored in memory (400000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  164680 kB used, 190204 kB peak, 65263848 kB available RAM
Total number of measurements 194721 (194721 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_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.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: 2026-04-05T05:18:12.8640663
Setting observation time using DATE-OBS keyword: 2026-04-05T05:18:12.8640663

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-04-05T05:18:12.864
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-12_20.00sec_-5.00C_LIGHT_0150.fits
The star  8633.115    23.143 is rejected, see bad_region.lst
The star  8011.721    14.454 is rejected, see bad_region.lst
The star  8866.079    12.255 is rejected, see bad_region.lst
The star  9323.073     9.791 is rejected, see bad_region.lst
The star  9215.984    11.783 is rejected, see bad_region.lst
The star  8936.132    11.807 is rejected, see bad_region.lst
The star  8833.633    12.015 is rejected, see bad_region.lst
The star  8948.179     8.748 is rejected, see bad_region.lst
The star  8431.102     8.095 is rejected, see bad_region.lst
The star  8133.438     7.665 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 5967
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 2
 * rejected inside rectangles defined in bad_region.lst: 3571
 * rejected close to frame edge: 19
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 12
 * 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'.
     5967 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000019, number_of_ambiguous_matches=2 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.000019, number_of_ambiguous_matches=2 
5296 * matched, fraction_of_ambiguous_matches= 0.000019, number_of_ambiguous_matches=2 
5296 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.000019, number_of_ambiguous_matches=2 
5296 * matched (3rd iteration). Success!
  rotation [degrees] = 176.548
     5967 stars detected,  5296 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 3990, N_manually_selected_comparison_stars = 0
Using 3990 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 3185 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00022*X_pix +0.00014*Y_pix +1.12841
ERROR in magnitude calibration: fabs(lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 3185 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.92
 ERROR!!! Magnitude calibration failure. Dropping image. 
    105499 objects stored in memory (400000 max.)
The transient candidate (new frame position  1593.565  6032.521 ; ref frame position:  7795.818   178.897) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1327.624  4399.999 ; ref frame position:  8158.265  1785.231) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1206.293  5299.651 ; ref frame position:  8224.835   883.937) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1110.790  4849.424 ; ref frame position:  8346.821  1325.612) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1398.284  5818.873 ; ref frame position:  8002.783   379.489) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1039.349  5972.196 ; ref frame position:  8350.392   205.590) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1807.569  5252.605 ; ref frame position:  7629.930   966.766) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1808.994  5242.292 ; ref frame position:  7629.133   977.101) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1037.398  5413.884 ; ref frame position:  8385.871   760.286) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1872.696  5256.711 ; ref frame position:  7564.940   966.593) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1638.151  5458.064 ; ref frame position:  7786.006   752.429) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1073.348  4758.572 ; ref frame position:  8389.501  1413.648) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1331.922  4730.629 ; ref frame position:  8134.130  1456.930) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1848.232  4365.635 ; ref frame position:  7642.791  1850.617) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1252.031  5945.078 ; ref frame position:  8140.592   245.299) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1367.647  4347.117 ; ref frame position:  8121.656  1840.183) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1315.274  4901.436 ; ref frame position:  8140.420  1286.196) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1202.202  4655.660 ; ref frame position:  8267.589  1523.646) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1504.169  5276.653 ; ref frame position:  7930.097   924.664) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1497.067  5588.078 ; ref frame position:  7918.448   614.765) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1251.596  5087.095 ; ref frame position:  8192.567  1097.879) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1203.569  5184.355 ; ref frame position:  8234.469   998.347) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1414.999  5076.667 ; ref frame position:  8030.755  1118.046) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1777.421  5898.362 ; ref frame position:  7621.106   323.248) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1206.383  6138.782 ; ref frame position:  8174.334    50.071) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1326.284  5803.649 ; ref frame position:  8075.273   390.297) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1790.142  5992.602 ; ref frame position:  7602.799   230.361) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1304.186  5147.483 ; ref frame position:  8136.661  1041.025) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1199.388  4548.505 ; ref frame position:  8276.825  1629.961) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1154.252  6058.811 ; ref frame position:  8230.963   126.412) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1581.384  4213.786 ; ref frame position:  7917.188  1985.503) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1051.785  5142.535 ; ref frame position:  8387.870  1030.797) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1197.114  5441.814 ; ref frame position:  8225.419   742.114) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1601.197  5557.931 ; ref frame position:  7816.743   650.971) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1730.568  4718.502 ; ref frame position:  7738.564  1492.901) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1425.472  6020.399 ; ref frame position:  7963.648   180.857) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position   931.790  5621.503 ; ref frame position:  8478.384   547.631) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1637.905  5010.510 ; ref frame position:  7813.137  1197.163) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1315.400  5365.369 ; ref frame position:  8112.423   825.178) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1915.967  5589.714 ; ref frame position:  7501.919   638.274) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1580.687  6034.985 ; ref frame position:  7808.472   175.676) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position   970.702  5682.441 ; ref frame position:  8436.041   489.409) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1537.358  4935.022 ; ref frame position:  7917.627  1266.145) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1792.910  5746.714 ; ref frame position:  7614.819   474.874) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1057.811  4586.917 ; ref frame position:  8415.259  1583.294) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1543.156  5808.261 ; ref frame position:  7859.403   398.727) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1656.830  4719.676 ; ref frame position:  7811.796  1487.311) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1326.049  5978.299 ; ref frame position:  8065.015   216.728) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1160.354  4180.751 ; ref frame position:  8337.721  1993.068) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1841.514  6066.304 ; ref frame position:  7547.302   160.204) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1928.179  4365.882 ; ref frame position:  7563.300  1855.168) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1931.551  4580.651 ; ref frame position:  7547.046  1641.948) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1234.900  5485.676 ; ref frame position:  8185.221   700.794) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1041.357  4451.439 ; ref frame position:  8439.755  1716.936) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1536.953  5356.614 ; ref frame position:  7892.701   847.171) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1808.922  6002.221 ; ref frame position:  7583.552   221.930) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1241.228  5878.757 ; ref frame position:  8155.315   310.556) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position   973.739  5626.125 ; ref frame position:  8436.405   545.555) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1833.387  5127.854 ; ref frame position:  7611.758  1092.284) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1492.315  4842.760 ; ref frame position:  7967.947  1355.126) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1326.123  5801.031 ; ref frame position:  8075.590   392.889) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1542.582  4524.092 ; ref frame position:  7937.120  1674.813) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1554.323  4873.908 ; ref frame position:  7904.433  1327.895) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1767.126  6175.761 ; ref frame position:  7614.675    46.969) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1166.485  6093.196 ; ref frame position:  8216.736    92.977) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1563.585  5692.194 ; ref frame position:  7846.066   515.293) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position   985.042  6157.659 ; ref frame position:  8393.236    18.031) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1575.682  6074.083 ; ref frame position:  7811.100   136.523) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1484.647  5005.610 ; ref frame position:  7965.786  1192.837) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1603.266  4383.674 ; ref frame position:  7885.229  1817.993) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1435.628  4932.119 ; ref frame position:  8018.932  1262.926) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1858.628  5949.376 ; ref frame position:  7537.313   277.426) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1212.685  5321.292 ; ref frame position:  8217.181   862.814) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1748.351  5515.795 ; ref frame position:  7672.987   701.673) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position   946.642  5801.539 ; ref frame position:  8452.805   369.615) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1122.379  5421.213 ; ref frame position:  8300.951   758.101) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1680.743  5665.031 ; ref frame position:  7731.232   549.315) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1020.201  5712.680 ; ref frame position:  8385.018   462.331) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1578.121  5853.101 ; ref frame position:  7821.950   356.267) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1110.355  5484.052 ; ref frame position:  8309.128   694.935) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1836.798  5358.430 ; ref frame position:  7594.516   863.359) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1669.114  5085.419 ; ref frame position:  7777.612  1124.596) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1598.008  5834.636 ; ref frame position:  7803.290   375.809) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1749.966  4420.869 ; ref frame position:  7737.160  1789.833) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position   901.005  5858.000 ; ref frame position:  8494.780   310.768) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1284.108  4784.777 ; ref frame position:  8178.409  1400.253) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1771.051  6057.338 ; ref frame position:  7617.889   164.886) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1241.586  5993.574 ; ref frame position:  8148.062   196.480) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1192.561  5389.516 ; ref frame position:  8233.087   793.811) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1157.761  4933.948 ; ref frame position:  8295.050  1244.436) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1259.545  4964.344 ; ref frame position:  8192.040  1220.337) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1599.124  4830.847 ; ref frame position:  7862.483  1373.373) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1920.206  4424.561 ; ref frame position:  7567.702  1796.380) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1598.776  4766.813 ; ref frame position:  7866.676  1436.985) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1563.396  5208.160 ; ref frame position:  7875.333   996.281) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1898.506  5000.904 ; ref frame position:  7554.650  1222.346) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1878.660  5704.517 ; ref frame position:  7532.110   521.952) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1370.728  5444.854 ; ref frame position:  8052.646   749.511) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1395.905  4463.016 ; ref frame position:  8086.603  1726.705) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1341.735  4363.577 ; ref frame position:  8146.426  1822.271) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1731.403  5351.889 ; ref frame position:  7699.683   863.534) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1713.598  6064.949 ; ref frame position:  7674.545   153.875) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1243.991  6145.983 ; ref frame position:  8136.515    45.171) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1112.305  4427.027 ; ref frame position:  8370.690  1745.452) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1571.108  5766.881 ; ref frame position:  7834.101   441.525) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1878.177  5198.130 ; ref frame position:  7563.011  1025.136) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1428.074  4258.104 ; ref frame position:  8066.933  1932.264) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1276.407  6125.825 ; ref frame position:  8105.501    67.148) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1165.262  5450.731 ; ref frame position:  8256.547   731.341) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1245.376  5466.857 ; ref frame position:  8175.937   720.124) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1759.878  4751.345 ; ref frame position:  7707.453  1462.023) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1010.244  5720.096 ; ref frame position:  8394.470   454.363) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1276.717  5126.038 ; ref frame position:  8165.255  1060.687) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1413.536  5954.140 ; ref frame position:  7979.495   245.985) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position   923.661  5504.734 ; ref frame position:  8493.480   663.180) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1527.142  5229.748 ; ref frame position:  7910.077   972.654) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1401.495  5008.881 ; ref frame position:  8048.251  1184.597) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1135.994  5826.206 ; ref frame position:  8263.087   356.464) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1212.138  4871.367 ; ref frame position:  8244.754  1309.887) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1587.021  6077.705 ; ref frame position:  7799.610   133.604) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1471.284  4854.898 ; ref frame position:  7988.125  1341.802) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1783.769  5768.130 ; ref frame position:  7622.620   453.044) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position   969.664  5421.008 ; ref frame position:  8452.779   749.142) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position   989.976  5085.083 ; ref frame position:  8452.766  1084.181) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1567.712  4803.098 ; ref frame position:  7895.378  1399.064) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1804.861  4436.161 ; ref frame position:  7681.669  1777.931) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1698.655  4250.873 ; ref frame position:  7798.381  1955.685) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1338.581  4264.666 ; ref frame position:  8155.503  1920.373) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1146.975  4733.083 ; ref frame position:  8317.840  1443.395) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1051.025  5799.412 ; ref frame position:  8349.165   377.991) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1766.877  5245.291 ; ref frame position:  7670.821   971.593) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1004.753  5159.046 ; ref frame position:  8433.633  1011.568) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1176.175  5277.653 ; ref frame position:  8256.097   903.989) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1008.552  5486.616 ; ref frame position:  8410.179   686.279) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1742.753  4719.001 ; ref frame position:  7726.420  1493.137) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1157.665  5116.820 ; ref frame position:  8284.159  1062.704) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1678.359  4687.013 ; ref frame position:  7792.357  1521.060) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1794.674  4672.298 ; ref frame position:  7677.610  1542.663) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1128.019  4983.946 ; ref frame position:  8321.613  1192.966) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1465.209  5550.387 ; ref frame position:  7952.383   650.308) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1154.765  4780.466 ; ref frame position:  8307.249  1396.776) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1246.155  4807.528 ; ref frame position:  8214.771  1375.367) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position  1514.349  6104.844 ; ref frame position:  7870.223   102.275) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
The transient candidate (new frame position   995.675  5939.687 ; ref frame position:  8395.761   235.275) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
memory:  1853668 kB used, 1926052 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.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: 2026-04-05T05:18:56.0562780
Setting observation time using DATE-OBS keyword: 2026-04-05T05:18:56.0562780

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-04-05T05:18:56.056
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-04-05_CI_Lyn-03-Q2b1x1_003117_TTUQ2b1x1_3689_XgC3CxwO/fd_Lyn-03-Q2b1x1_2026-04-05_00-18-56_20.00sec_-4.90C_LIGHT_0151.fits
The star  8633.248    25.103 is rejected, see bad_region.lst
The star  8011.916    16.429 is rejected, see bad_region.lst
The star  8866.133    14.327 is rejected, see bad_region.lst
The star  9323.139    11.810 is rejected, see bad_region.lst
The star  9216.126    13.686 is rejected, see bad_region.lst
The star  8935.933    13.541 is rejected, see bad_region.lst
The star  8948.105    10.827 is rejected, see bad_region.lst
The star  8431.076    10.183 is rejected, see bad_region.lst
The star  9490.945     9.692 is rejected, see bad_region.lst
The star  8586.232     9.721 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 6842
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 4566
 * rejected close to frame edge: 16
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 11
 * 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'.
     6842 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000019, number_of_ambiguous_matches=2 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.000019, number_of_ambiguous_matches=2 
6141 * matched, fraction_of_ambiguous_matches= 0.000019, number_of_ambiguous_matches=2 
6141 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.000019, number_of_ambiguous_matches=2 
6141 * matched (3rd iteration). Success!
  rotation [degrees] = 176.570
     6842 stars detected,  6141 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 4730, N_manually_selected_comparison_stars = 0
Using 4730 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 3019 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00024*X_pix +0.00010*Y_pix +1.40914
ERROR in magnitude calibration: fabs(lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 3019 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.91
 ERROR!!! Magnitude calibration failure. Dropping image. 
    105499 objects stored in memory (400000 max.)
memory:  1854064 kB used, 1926052 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 2 seconds
Done with measurements! =)

Total number of measurements 194721 (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 20950 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 22031 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 13636 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 12818 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 19787 stars

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

Computing, please wait a bit
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 88843 objects, the longest string is 384 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 Lyn-03-Q2b1x1 ###########
The analysis was running at tau
We are allowed to update the exclusion list at tau host
Found ../exclusion_list_TTUQ2.txt
#### The exclusion list before filtering-out asteroids, bad pixels and adding Gaia sources ####
###################################################################################
renamed 'exclusion_list_index_html.txt_noasteroids' -> 'exclusion_list_index_html.txt'
renamed 'exclusion_list_index_html.txt_nohotpixels' -> 'exclusion_list_index_html.txt'
# Count candidates with no identification (that also don't look like hot pix)
Found 0 unidentified candidates (excluding asteroids, hot pixels and known variable stars).
###################################################################################
0 candidates found (excluding asteroids and hot pixels)
This does not look like a test run
###################################################################################
exclusion_list_gaiadr2.txt NOT FOUND
exclusion_list_apass.txt NOT FOUND
IS_THIS_TEST_RUN=NO  ALLOW_EXCLUSION_LIST_UPDATE= YES
#### Nothing to add to the exclusion list ####
The observatory MPC code is V36
############################################################
ls: cannot access 'planets.txt': No such file or directory
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT):
ls: cannot access 'moons.txt': No such file or directory
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT):
ls: cannot access 'spacecraft.txt': No such file or directory
############################################################
ls: cannot access 'comets.txt': No such file or directory
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
ls: cannot access 'asassn_transients_list.txt': No such file or directory
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
ls: cannot access 'tocp_transients_list.txt': No such file or directory

=== Transient Factory Profiling ===
Started: Sun Apr  5 00:33:13 CDT 2026
=======================================
FIELD_Lyn-03-Q2b1x1: 70s (1.17 min)
=======================================
TOTAL_RUNTIME: 87s (1.45 min)
Finished: Sun Apr  5 00:34:40 CDT 2026