NMW transient search results

This analysis is done by the script util/transients/transient_factory_test31.sh /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF

The list of candidates will appear below. Please manually reload the page every few minutes untill the 'Processing complete' message appears.

Processing fields Gem-03-Q2b1x1

Processing complete!

Total number of candidates identified: 0

Processing log:

Filtering log:

 
######## 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_2026-04-08_multinight.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= 8000
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_SOFT_LIMIT= 4000
OMP_NUM_THREADS= 
ONLINE_MPCHECKER_BUTTON_ASTEROID_SEARCH_RADIUS_ARCMIN= 
PHOTOMETRIC_CALIBRATION= 
REQUIRE_PIX_SHIFT_BETWEEN_IMAGES_FOR_TRANSIENT_CANDIDATES= yes
SEXTRACTOR_CONFIG_BRIGHTSTARPASS= default.sex.telephoto_lens_onlybrightstars_v1
SEXTRACTOR_CONFIG_FILES= default.sex.telephoto_lens_onlybrightstars_v1 default.sex.telephoto_lens_vSTL
STARMATCH_RADIUS_PIX= 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: 
Gem-03-Q2b1x1
#######################################
########### Starting Gem-03-Q2b1x1 ###########
Processing Gem-03-Q2b1x1
WARNING: server tau is low on disk space, only 30866 MB free at /data_ssd/NMW-TexasTech/workdir
WARNING: server tau is low on disk space, only 30866 MB free at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-15-24_20.00sec_-15.00C_LIGHT_0059.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.png' -> 'transient_report/Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits_preview.png'

Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits


renamed 'Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.png' -> 'transient_report/Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits_preview.png'

Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.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= 647.1715
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 849.8297
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 2052.5539
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 382.1001
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 2047.7515
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 394.8783
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 3.17158
INFO:                  SECOND_EPOCH__SD_ratio= 0.032
----------------------------------------------
Calibration settings: DARK_FRAMES_DIR=/var/www/nmw_calibration/TTUQ2b1x1/darks FLAT_FIELD_FILE=/var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-04-08_multinight.fit
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                 -5.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -5.0 / [degC] CCD temperature
FOCTEMP =     14.8599996566772 / [degC] Focuser temperature
AMBTEMP =                 15.1 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits 
CCD-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits
SET-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-04-19T22:08:13.2687128' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-04-20T03:08:13.2687128' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61150.1307091205 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-04-20T03:08:23.1726591' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =       61150.13082375 / 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      =     96.9006204941537 / [deg] RA of telescope" status=0
Record 32: "DEC     =     22.0441495662615 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     39.6486111111111 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =             271.8425 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     1.56501537394698 / 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  = 'Gem-03'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '06 27 41'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+22 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "FOCNAME = 'ZWO Focuser'        / Focusing equipment name" status=0
Record 50: "FOCPOS  =                20341 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20341 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     14.8599996566772 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     14.8599996566772 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 -7.1 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 21.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=                906.1 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 15.1 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 18.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             13.00104 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             7.900632 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits 9576 6388  16 bitpix
SET-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits
SET-TEMP= -5.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-04-09.fit
CCD-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits
CCD-TEMP= -5.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-04-09.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-04-09.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/d_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits :)

Spent 0.679610 seconds 
renamed 'mdark_TTUQ2b1x1_-5C_20s_2026-04-09.png' -> 'transient_report/dark.png'
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/d_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-04-08_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 40671.357813
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits :)


No overscan detected - all values seem high! (left_median=26440.0, right_median=31961.0)
renamed 'mff_TTUQ2b1x1_2026-04-08_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                 -5.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -5.0 / [degC] CCD temperature
FOCTEMP =      14.789999961853 / [degC] Focuser temperature
AMBTEMP =                 15.1 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits 
CCD-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
SET-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-04-19T22:09:01.7800667' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-04-20T03:09:01.7800667' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61150.1312706019 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-04-20T03:09:11.6806679' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61150.1313851853 / 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      =     96.9006205054505 / [deg] RA of telescope" status=0
Record 32: "DEC     =      22.044149575208 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     39.4819444444444 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     271.949444444444 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     1.57050957994274 / 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  = 'Gem-03'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '06 27 41'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+22 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "FOCNAME = 'ZWO Focuser'        / Focusing equipment name" status=0
Record 50: "FOCPOS  =                20341 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20341 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =      14.789999961853 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=      14.789999961853 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 -7.1 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 21.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=                906.1 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 15.1 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 18.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             13.00104 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             7.900632 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits 9576 6388  16 bitpix
SET-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
SET-TEMP= -5.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-04-09.fit
CCD-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
CCD-TEMP= -5.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-04-09.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-04-09.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/d_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits :)

Spent 0.652789 seconds 
renamed 'mdark_TTUQ2b1x1_-5C_20s_2026-04-09.png' -> 'transient_report/dark.png'
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/d_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-04-08_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 40671.357813
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits :)


No overscan detected - all values seem high! (left_median=26440.0, right_median=31961.0)
renamed 'mff_TTUQ2b1x1_2026-04-08_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.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_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
Previews of the CALIBRATED second-epoch images:


fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits



fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.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/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-15-24_20.00sec_-15.00C_LIGHT_0059.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
  
Last  image: 2461150.63082486 20.04.2026 03:08:13.268 UTC
ERROR running VaST on the field Gem-03-Q2b1x1 (wrong field? clouds? very bad focus? -- transient_factory_test31.txt)
____ VaST output ____

--==VaST 1.0rc90==--

Parsing command line arguments...
opt 'r': assuming no rotation larger than 15.0 degrees!
opt 'F': Will NOT create flag images for SExtractor
opt '5': 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 ...

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_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF)...  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/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-15-24_20.00sec_-15.00C_LIGHT_0059.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits 


Preparing to process 4 input FITS images...


######## Forcing special settings for the transient detection ########
transient search mode: disabling the mag-size filter as it should be switched off when running a transient search!
transient search mode: disabling the bad image filter as it will not help during the transient search!
transient search mode: will not try to gues image saturation limit
transient search mode: no UTC-to-TT time system conversion will be performed!!!
transient search mode: setting the maximum acceptable SExtractor flag to 3
transient search mode: disabling rejectin of images with elliptical stars
transient search mode: not discarding large sources
################
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  3322.0  3744.0  3324.0  3746.0  (defined in bad_region.lst)
Excluding image region:  3586.0  4005.0  3588.0  4007.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 14 image regions  (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 Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits catalog from cache
SExtractor catalog cache: restored Gem-03-Q2b1x1_2026-02-21_21-15-24_20.00sec_-15.00C_LIGHT_0059.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/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-15-24_20.00sec_-15.00C_LIGHT_0059.fits
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.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_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Parent process says: we are done fork()ing.
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Waiting for thread 3 to finish...
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  3322.0  3744.0  3324.0  3746.0  (defined in bad_region.lst)
Excluding image region:  3586.0  4005.0  3588.0  4007.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 14 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.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_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.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_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  3322.0  3744.0  3324.0  3746.0  (defined in bad_region.lst)
Excluding image region:  3586.0  4005.0  3588.0  4007.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 14 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.4,6.4,5.8,7.1,7.7,8.4 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.4,6.4,5.8,7.1,7.7,8.4 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.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_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits


Done with SExtractor!

TIMING SExtractor: 2 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-02-22T03:14:32.9803333
Setting observation time using DATE-OBS keyword: 2026-02-22T03:14:32.9803333

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-02-22T03:14:32.980
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits
Exposure 20 sec, 22.02.2026 03:14:32.980 UTC = JD(UTC) 2461093.63521968 mid. exp.
The reference image star  7681.259    36.146 is rejected, see bad_region.lst
The reference image star  8214.552    27.689 is rejected, see bad_region.lst
The reference image star  8008.732    25.780 is rejected, see bad_region.lst
The reference image star  7697.544    25.314 is rejected, see bad_region.lst
The reference image star  8915.167    23.934 is rejected, see bad_region.lst
The reference image star  8918.275    22.941 is rejected, see bad_region.lst
The reference image star  8447.507    21.062 is rejected, see bad_region.lst
The reference image star  8621.610    23.634 is rejected, see bad_region.lst
The reference image star  7998.056    21.597 is rejected, see bad_region.lst
The reference image star  7527.489    21.869 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: 26997, (26997 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: 7292
 * rejected close to frame edge: 130
 * rejected as being too small (<1.8 pix): 0
 * rejected as being too large (>7.0 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 24
 * 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: -7.88
Detection limit from the magnitude-SNR relation= -7.9  (5.0 sigma detection)
The simple faintest star detection limit= -9.9
80 percent brightest stars detection limit= -10.6
Selected detection limit= -10.6
Final detection limit= -10.6 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.06.9 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 19
 * 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'.
    26787 * detected, using  496/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.001222, number_of_ambiguous_matches=33 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.001222, number_of_ambiguous_matches=33 
25482 * matched, fraction_of_ambiguous_matches= 0.001222, number_of_ambiguous_matches=33 
25482 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.001222, number_of_ambiguous_matches=33 
25482 * matched (3rd iteration). Success!
  rotation [degrees] =   0.004
    26787 stars detected, 25482 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 22882, N_manually_selected_comparison_stars = 0
Using 22882 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 22882 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00000*X_pix -0.00000*Y_pix -0.00092
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 22881 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.86
    28302 objects stored in memory (400000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  117684 kB used, 131088 kB peak, 65263856 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.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: 2026-04-20T03:08:13.2687128
Setting observation time using DATE-OBS keyword: 2026-04-20T03:08:13.2687128

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-04-20T03:08:13.268
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits
The star  7583.187    41.572 is rejected, see bad_region.lst
The star  7796.500    51.378 is rejected, see bad_region.lst
The star  8844.629    77.315 is rejected, see bad_region.lst
The star  8292.777   188.803 is rejected, see bad_region.lst
The star  7523.302   196.246 is rejected, see bad_region.lst
The star  8376.587   205.452 is rejected, see bad_region.lst
The star  7963.307   212.624 is rejected, see bad_region.lst
The star  9447.345   278.583 is rejected, see bad_region.lst
The star  7517.241   282.278 is rejected, see bad_region.lst
The star  9323.772   303.432 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 1669
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 184
 * rejected close to frame edge: 6
 * rejected as being too small (<1.6 pix): 0
 * rejected as being too large (>6.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
     1669 * 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 
1612 * matched, fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1612 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1612 * matched (3rd iteration). Success!
  rotation [degrees] =   4.893
     1669 stars detected,  1612 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1000, N_manually_selected_comparison_stars = 0
Using 1000 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 994 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00014*X_pix -0.00007*Y_pix -0.16134
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 994 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.14
 ERROR!!! Magnitude calibration failure. Dropping image. 
    28302 objects stored in memory (400000 max.)
memory:  121296 kB used, 131088 kB peak, 65263856 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.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: 2026-04-20T03:09:01.7800667
Setting observation time using DATE-OBS keyword: 2026-04-20T03:09:01.7800667

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-04-20T03:09:01.780
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
The star  7587.015    45.078 is rejected, see bad_region.lst
The star  7800.276    54.930 is rejected, see bad_region.lst
The star  8848.471    80.822 is rejected, see bad_region.lst
The star  7527.046   199.818 is rejected, see bad_region.lst
The star  8380.467   208.867 is rejected, see bad_region.lst
The star  7967.123   216.179 is rejected, see bad_region.lst
The star  9451.159   282.060 is rejected, see bad_region.lst
The star  7521.024   285.806 is rejected, see bad_region.lst
The star  9327.700   306.901 is rejected, see bad_region.lst
The star  8002.756   342.122 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 1787
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 190
 * rejected close to frame edge: 7
 * rejected as being too small (<1.6 pix): 0
 * rejected as being too large (>6.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
     1787 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000035, number_of_ambiguous_matches=1 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1722 * matched, fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1722 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1722 * matched (3rd iteration). Success!
  rotation [degrees] =   4.925
     1787 stars detected,  1722 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1091, N_manually_selected_comparison_stars = 0
Using 1091 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 1075 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00017*X_pix -0.00008*Y_pix -0.15228
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 1075 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.14
 ERROR!!! Magnitude calibration failure. Dropping image. 
    28302 objects stored in memory (400000 max.)
memory:  121296 kB used, 131088 kB peak, 65263856 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 1 seconds
Done with measurements! =)

Total number of measurements 53784 (53784 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 2 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  5419 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  7443 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  3775 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  3286 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  5559 stars

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

Computing, please wait a bit
............................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 25231 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/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-15-24_20.00sec_-15.00C_LIGHT_0059.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
  
Last  image: 2461150.63082486 20.04.2026 03:08:13.268 UTC
ERROR running VaST on the field Gem-03-Q2b1x1 (wrong field? clouds? very bad focus? -- transient_factory_test31.txt)
____ VaST output ____

--==VaST 1.0rc90==--

Parsing command line arguments...
opt 'r': assuming no rotation larger than 15.0 degrees!
opt 'F': Will NOT create flag images for SExtractor
opt '5': 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 ...

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_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF)...  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/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-15-24_20.00sec_-15.00C_LIGHT_0059.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits 


Preparing to process 4 input FITS images...


######## Forcing special settings for the transient detection ########
transient search mode: disabling the mag-size filter as it should be switched off when running a transient search!
transient search mode: disabling the bad image filter as it will not help during the transient search!
transient search mode: will not try to gues image saturation limit
transient search mode: no UTC-to-TT time system conversion will be performed!!!
transient search mode: setting the maximum acceptable SExtractor flag to 3
transient search mode: disabling rejectin of images with elliptical stars
transient search mode: not discarding large sources
################
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  3322.0  3744.0  3324.0  3746.0  (defined in bad_region.lst)
Excluding image region:  3586.0  4005.0  3588.0  4007.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 14 image regions  (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 Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits catalog from cache
SExtractor catalog cache: restored Gem-03-Q2b1x1_2026-02-21_21-15-24_20.00sec_-15.00C_LIGHT_0059.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/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-15-24_20.00sec_-15.00C_LIGHT_0059.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.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_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  3322.0  3744.0  3324.0  3746.0  (defined in bad_region.lst)
Excluding image region:  3586.0  4005.0  3588.0  4007.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 14 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.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_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.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_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  3322.0  3744.0  3324.0  3746.0  (defined in bad_region.lst)
Excluding image region:  3586.0  4005.0  3588.0  4007.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 14 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.9,4.9,4.4,5.4,5.9,6.4 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.9,4.9,4.4,5.4,5.9,6.4 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.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_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits


Done with SExtractor!

TIMING SExtractor: 7 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/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-02-22T03:14:32.9803333
Setting observation time using DATE-OBS keyword: 2026-02-22T03:14:32.9803333

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-02-22T03:14:32.980
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-02-21_21-14-32_20.00sec_-15.00C_LIGHT_0058.fits
Exposure 20 sec, 22.02.2026 03:14:32.980 UTC = JD(UTC) 2461093.63521968 mid. exp.
The reference image star  7681.257    36.146 is rejected, see bad_region.lst
The reference image star  8345.454    41.966 is rejected, see bad_region.lst
The reference image star  7586.937    42.089 is rejected, see bad_region.lst
The reference image star  8127.298    37.923 is rejected, see bad_region.lst
The reference image star  7747.908    29.365 is rejected, see bad_region.lst
The reference image star  8052.075    28.422 is rejected, see bad_region.lst
The reference image star  8008.729    25.782 is rejected, see bad_region.lst
The reference image star  7998.035    21.594 is rejected, see bad_region.lst
The reference image star  9545.600    26.972 is rejected, see bad_region.lst
The reference image star  7697.546    25.314 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: 156690, (156690 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 37
 * rejected inside rectangles defined in bad_region.lst: 26132
 * rejected close to frame edge: 673
 * rejected as being too small (<1.4 pix): 0
 * rejected as being too large (>5.5 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 46
 * 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: -7.58
Detection limit from the magnitude-SNR relation= -7.6  (5.0 sigma detection)
The simple faintest star detection limit= -6.9
80 percent brightest stars detection limit= -8.2
Selected detection limit= -8.2
Final detection limit= -8.2 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.05.4 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): 35
 * 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'.
    159179 * detected, using  507/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.009580, number_of_ambiguous_matches=1525 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.009580, number_of_ambiguous_matches=1525 
145086 * matched, fraction_of_ambiguous_matches= 0.009580, number_of_ambiguous_matches=1525 
145086 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.009580, number_of_ambiguous_matches=1525 
145086 * matched (3rd iteration). Success!
  rotation [degrees] =   0.005
    159179 stars detected, 145086 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 116425, N_manually_selected_comparison_stars = 0
Using 116425 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 116423 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00000*X_pix -0.00000*Y_pix +0.00080
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 112178 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.55
    170783 objects stored in memory (400000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  218092 kB used, 244568 kB peak, 65263856 kB available RAM
Total number of measurements 315869 (315869 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_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.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: 2026-04-20T03:08:13.2687128
Setting observation time using DATE-OBS keyword: 2026-04-20T03:08:13.2687128

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-04-20T03:08:13.268
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-08-13_20.00sec_-5.00C_LIGHT_0056.fits
The star  8163.708    13.440 is rejected, see bad_region.lst
The star  8336.026    11.702 is rejected, see bad_region.lst
The star  7546.893    20.671 is rejected, see bad_region.lst
The star  7583.172    41.580 is rejected, see bad_region.lst
The star  7994.150    46.358 is rejected, see bad_region.lst
The star  7796.518    51.369 is rejected, see bad_region.lst
The star  8301.839    52.866 is rejected, see bad_region.lst
The star  8844.630    77.315 is rejected, see bad_region.lst
The star  9177.318    65.778 is rejected, see bad_region.lst
The star  8910.442    77.281 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 16501
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 1
 * rejected inside rectangles defined in bad_region.lst: 1414
 * rejected close to frame edge: 80
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.9 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 57
 * 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'.
    16501 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000141, number_of_ambiguous_matches=24 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.000088, number_of_ambiguous_matches=15 
15948 * matched, fraction_of_ambiguous_matches= 0.000088, number_of_ambiguous_matches=15 
15946 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.000088, number_of_ambiguous_matches=15 
15946 * matched (3rd iteration). Success!
  rotation [degrees] =   4.899
    16501 stars detected, 15946 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 10736, N_manually_selected_comparison_stars = 0
Using 10736 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 10241 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00016*X_pix -0.00006*Y_pix -0.24498
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 10241 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.87
 ERROR!!! Magnitude calibration failure. Dropping image. 
    170783 objects stored in memory (400000 max.)
The transient candidate (new frame position  7289.086  1041.574 ; ref frame position:  7496.327  1242.049) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
memory:  1888252 kB used, 1913928 kB peak, 65263856 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.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: 2026-04-20T03:09:01.7800667
Setting observation time using DATE-OBS keyword: 2026-04-20T03:09:01.7800667

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-04-20T03:09:01.780
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-04-19_CI_Gem-03-Q2b1x1_221541_TTUQ2b1x1_3457335_fohrEgyF/fd_Gem-03-Q2b1x1_2026-04-19_22-09-01_20.00sec_-5.00C_LIGHT_0057.fits
The star  7811.416     2.365 is rejected, see bad_region.lst
The star  7550.471    24.254 is rejected, see bad_region.lst
The star  8167.459    16.959 is rejected, see bad_region.lst
The star  8340.577    15.763 is rejected, see bad_region.lst
The star  7587.012    45.080 is rejected, see bad_region.lst
The star  7998.141    49.655 is rejected, see bad_region.lst
The star  7800.262    54.934 is rejected, see bad_region.lst
The star  8304.658    56.054 is rejected, see bad_region.lst
The star  8307.261    56.921 is rejected, see bad_region.lst
The star  8848.469    80.821 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 17062
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 1435
 * rejected close to frame edge: 83
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.9 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 52
 * 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'.
    17062 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000076, number_of_ambiguous_matches=13 
refining the coordinate transformation... fraction_of_ambiguous_matches= 0.000082, number_of_ambiguous_matches=14 
16497 * matched, fraction_of_ambiguous_matches= 0.000076, number_of_ambiguous_matches=13 
16507 * matched (2nd iteration). fraction_of_ambiguous_matches= 0.000076, number_of_ambiguous_matches=13 
16507 * matched (3rd iteration). Success!
  rotation [degrees] =   4.923
    17062 stars detected, 16507 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 11197, N_manually_selected_comparison_stars = 0
Using 11197 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 10717 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00020*X_pix -0.00007*Y_pix -0.29472
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 10717 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.87
 ERROR!!! Magnitude calibration failure. Dropping image. 
    170783 objects stored in memory (400000 max.)
memory:  1888516 kB used, 1913928 kB peak, 65263856 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 7 seconds
Done with measurements! =)

Total number of measurements 315869 (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 28886 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 40883 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 20200 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 18887 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 36230 stars

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

Computing, please wait a bit
....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 144422 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 Gem-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

Profiling:

 CPU temperature: 89 C