FITS images used in this processing run:

Field Gem-03-Q2b1x1 reference image: Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
Field Gem-03-Q2b1x1 reference image: Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits
Field Gem-03-Q2b1x1 second-epoch image: Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
Field Gem-03-Q2b1x1 second-epoch image: Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits

WARNING: VaST exited with code 1 on the field Gem-03-Q2b1x1 after completing the measurements (memory cleanup crash); the transient search continues.
## VaST run with SExtractor config file default.sex.telephoto_lens_onlybrightstars_v1 ##
Images processed 4
Images used for photometry 2
Ref.  image: 2461058.61760534 18.01.2026 02:49:11.101   /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
First image: 2461058.61760534 18.01.2026 02:49:11.101   /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
Last  image: 2461121.68456495 22.03.2026 04:25:36.412   /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.79
Magnitude-Size filter: Disabled
For each source choose aperture with the smallest scatter: YES
Photometric errors rescaling: NO
Number of identified bad images: 0
Number of SysRem iterations: 0
User-specified moving object: none
Computation time: 3 seconds
Number of parallel threads: 3
SExtractor parameter file: default.sex
Some important SExtractor parameters:
DETECT_MINAREA  10.0             # minimum number of pixels above threshold
DETECT_THRESH   10.0             #  or , in mag.arcsec-2
ANALYSIS_THRESH 10.0             #  or , in mag.arcsec-2
SATUR_LEVEL     55000.0         # level (in ADUs) at which arises saturation
GAIN            0.37            # detector gain in e-/ADU
VAST_SKIP_INDEX_VS_MAG is set - skipping the lib/index_vs_mag variability-index fitting
Total objects detected (at least 2 times):  15693
Objects passed selection criteria:  15584
Measurements per detected object (mean, median, min, max):    2.0    2.0    2    2
Measurements per selected object (mean, median, min, max):    2.0    2.0    2    2
Average stars detected per image: 23405
Average stars matched: 19102 (81.615 %)
Memory usage VmPeak:   248308 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Wed Jul 29 18:03:05 CDT 2026
VaST build number  1.0rc89-187-gf9db235a
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-07-29)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Tue Aug  4 06:21:21 CDT 2026
Host name: tau
***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################
WARNING: VaST exited with code 1 on the field Gem-03-Q2b1x1 after completing the measurements (memory cleanup crash); the transient search continues.
## VaST run with SExtractor config file default.sex.telephoto_lens_vSTL ##
Images processed 4
Images used for photometry 2
Ref.  image: 2461058.61760534 18.01.2026 02:49:11.101   /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
First image: 2461058.61760534 18.01.2026 02:49:11.101   /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
Last  image: 2461121.68456495 22.03.2026 04:25:36.412   /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.41
Magnitude-Size filter: Disabled
For each source choose aperture with the smallest scatter: YES
Photometric errors rescaling: NO
Number of identified bad images: 0
Number of SysRem iterations: 0
User-specified moving object: none
Computation time: 19 seconds
Number of parallel threads: 3
SExtractor parameter file: default.sex
Some important SExtractor parameters:
DETECT_MINAREA  2.0             # minimum number of pixels above threshold
DETECT_THRESH   3.0             #  or , in mag.arcsec-2
ANALYSIS_THRESH 3.0             #  or , in mag.arcsec-2
SATUR_LEVEL     57000.0         # level (in ADUs) at which arises saturation
GAIN            0.83            # detector gain in e-/ADU
WEIGHT_TYPE BACKGROUND
VAST_SKIP_INDEX_VS_MAG is set - skipping the lib/index_vs_mag variability-index fitting
Total objects detected (at least 2 times):  112825
Objects passed selection criteria:  112370
Measurements per detected object (mean, median, min, max):    2.0    2.0    2    2
Measurements per selected object (mean, median, min, max):    2.0    2.0    2    2
Average stars detected per image: 162656
Average stars matched: 140286 (86.247 %)
Memory usage VmPeak:   622932 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Wed Jul 29 18:03:05 CDT 2026
VaST build number  1.0rc89-187-gf9db235a
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-07-29)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Tue Aug  4 06:21:41 CDT 2026
Host name: tau
***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################

######## Processing parameters ########
AAVSO_COMMENT_STRING= NMW-TexasTech Camera-2 135mm f/2.2 telephoto lens + QHY600M CMOS
ASTCHECK_ASTEROID_SEARCH_RADIUS_ARCSEC= 
BAD_REGION_FILE= /var/www/nmw_calibration/TTUQ2b1x1/TTUQ2_bad_region.lst
CAMERA_SETTINGS= TTUQ2b1x1
CHECK_POINTING_ACCURACY= yes
DARK_FRAMES_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ2b1x1/darks
EXCLUSION_LIST= ../exclusion_list_TTUQ2.txt
FILTER_BAD_IMG__MAX_APERTURE_STAR_SIZE_PIX= 12.5
FILTER_BAD_IMG__MAX_ELONGATION_AminusB_PIX= 0.55
FILTER_BAD_IMG__MIN_APERTURE_STAR_SIZE_PIX= 2.0
FILTER_BRIGHT_MAG_CUTOFF_TRANSIENT_SEARCH= -5
FILTER_FAINT_MAG_CUTOFF_TRANSIENT_SEARCH= 15.5
FLAT_FIELD_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ2b1x1/flats
FRAME_EDGE_OFFSET_PIX= 600
GAIA_BAND_FOR_CATALOGED_SOURCE_CHECK= 
MAX_NEW_TO_REF_MEAN_IMG_VALUE_RATIO= 100
DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK= yes
MAX_NEW_IMG_MEAN_VALUE= 25000
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS= 0.18
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS_SOFT_LIMIT= 0.12
MPC_CODE= V36
NMW_CALIBRATION= /var/www/nmw_calibration
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_HARD_LIMIT= 10000
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_SOFT_LIMIT= 8000
OMP_NUM_THREADS= 3
ONLINE_MPCHECKER_BUTTON_ASTEROID_SEARCH_RADIUS_ARCMIN= 
PHOTOMETRIC_CALIBRATION= 
REQUIRE_PIX_SHIFT_BETWEEN_IMAGES_FOR_TRANSIENT_CANDIDATES= yes
SEXTRACTOR_CONFIG_BRIGHTSTARPASS= default.sex.telephoto_lens_onlybrightstars_v1
SEXTRACTOR_CONFIG_FILES= default.sex.telephoto_lens_onlybrightstars_v1 default.sex.telephoto_lens_vSTL
STARMATCH_RADIUS_PIX= 5
SYSREM_ITERATIONS= 0
TELESCOP= 
TELESCOP_NAME_KNOWN_TO_VaST_FOR_FOV_DETERMINATION= 
UCAC5_PLATESOLVE_ITERATIONS= 2
FPACK_FULLY_CALIBRATED_IMAGE= no
#######################################
HOSTNAME= tau
USER= 
HOME= 
#######################################
SExtractor catalog cache: enabled, directory /data_ssd/NMW-TexasTech/vast_sextractor_cache
Reference image directory is set to /data_ssd/NMW-TexasTech/reference_imgs
VIZIER_SITE=vizier.cds.unistra.fr
GAIA_DR2_CLIENT=vizquery (lib/vizquery -> VizieR vizier.cds.unistra.fr)
INFO: MAKE_PNG_PLOTS is set to yes
FITS_FILE_EXT=fits
CALIBRATION_STATUS_PREFIX=
Fields in the data directory: 
Gem-03-Q2b1x1
#######################################
########### Starting Gem-03-Q2b1x1 ###########
Processing Gem-03-Q2b1x1
server tau has sufficient free disk space available: 121130 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 121130 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.png' -> 'transient_report/Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits_preview.png'

Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits


renamed 'Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.png' -> 'transient_report/Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits_preview.png'

Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.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= 700.5971
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 833.3070
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 4546.9611
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 875.5866
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 4537.0477
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 876.0122
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 6.49012
INFO:                  SECOND_EPOCH__SD_ratio= 0.000
INFO: the new-to-reference mean image value ratio check is disabled (DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK=yes) - expected with a background-subtracted reference image
----------------------------------------------
Calibration settings: DARK_FRAMES_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ2b1x1/darks FLAT_FIELD_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ2b1x1/flats
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     22.9500007629395 / [degC] Focuser temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
Header: 67 keys total, 4 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= '2026-08-04T05:39:25.4168402' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-04T10:39:25.4168402' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61256.4440441667 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-04T10:39:35.3163183' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61256.4441587501 / Modified Julian Date of averaged midpoint" status=0
Record 16: "XBINNING=                    1 / X axis binning factor" status=0
Record 17: "YBINNING=                    1 / Y axis binning factor" status=0
Record 18: "GAIN    =                   30 / Sensor gain" status=0
Record 19: "OFFSET  =                   30 / Sensor gain offset" status=0
Record 20: "XPIXSZ  =                 3.76 / [um] Pixel X axis size" status=0
Record 21: "YPIXSZ  =                 3.76 / [um] Pixel Y axis size" status=0
Record 22: "INSTRUME= 'QHY600M'            / Imaging instrument name" status=0
Record 23: "CAMERAID= 'QHY600M-84137c4dbbbd119a9' / Imaging instrument identifier" status=0
Record 24: "SET-TEMP=                  0.0 / [degC] CCD temperature setpoint" status=0
Record 25: "CCD-TEMP=                 -0.0 / [degC] CCD temperature" status=0
Record 26: "READOUTM= '2CMS-0'             / Sensor readout mode" status=0
Record 27: "USBLIMIT=                   50 / Camera-specific USB setting" status=0
Record 28: "TELESCOP= 'QHY600M-TTU2'       / Name of telescope" status=0
Record 29: "FOCALLEN=                135.0 / [mm] Focal length" status=0
Record 30: "FOCRATIO=                  2.2 / Focal ratio" status=0
Record 31: "RA      =      96.922880639122 / [deg] RA of telescope" status=0
Record 32: "DEC     =     21.9998658863656 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     14.9161111111111 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     73.2658333333333 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.83084973119173 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'West'               / 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  =                20430 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20430 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     22.9500007629395 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     22.9500007629395 / [degC] Focuser temperature" status=0
Record 55: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 56: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 57: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 58: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 59: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 60: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 61: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 62: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 63: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 64: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 65: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 66: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 67: "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_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/d_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits :)

Spent 0.477924 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-07-30.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-07-30.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/d_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-07-30.fit 9576 6388  16 bitpix
Avarage count on flat field image: 19899.553568
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits :)


No overscan detected - all values seem high! (left_median=13115.0, right_median=15628.5)
renamed 'mff_TTUQ2b1x1_2026-07-30.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                  0.0 / [degC] CCD temperature
FOCTEMP =     22.9400005340576 / [degC] Focuser temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits 
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
Header: 67 keys total, 4 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= '2026-08-04T05:40:13.1020005' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-04T10:40:13.1020005' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =      61256.444596088 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-04T10:40:23.0069981' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61256.4447107175 / Modified Julian Date of averaged midpoint" status=0
Record 16: "XBINNING=                    1 / X axis binning factor" status=0
Record 17: "YBINNING=                    1 / Y axis binning factor" status=0
Record 18: "GAIN    =                   30 / Sensor gain" status=0
Record 19: "OFFSET  =                   30 / Sensor gain offset" status=0
Record 20: "XPIXSZ  =                 3.76 / [um] Pixel X axis size" status=0
Record 21: "YPIXSZ  =                 3.76 / [um] Pixel Y axis size" status=0
Record 22: "INSTRUME= 'QHY600M'            / Imaging instrument name" status=0
Record 23: "CAMERAID= 'QHY600M-84137c4dbbbd119a9' / Imaging instrument identifier" status=0
Record 24: "SET-TEMP=                  0.0 / [degC] CCD temperature setpoint" status=0
Record 25: "CCD-TEMP=                  0.0 / [degC] CCD temperature" status=0
Record 26: "READOUTM= '2CMS-0'             / Sensor readout mode" status=0
Record 27: "USBLIMIT=                   50 / Camera-specific USB setting" status=0
Record 28: "TELESCOP= 'QHY600M-TTU2'       / Name of telescope" status=0
Record 29: "FOCALLEN=                135.0 / [mm] Focal length" status=0
Record 30: "FOCRATIO=                  2.2 / Focal ratio" status=0
Record 31: "RA      =     96.9228805950787 / [deg] RA of telescope" status=0
Record 32: "DEC     =     21.9998658914116 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     15.0758333333333 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     73.3644444444444 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.79236737901554 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'West'               / 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  =                20430 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20430 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     22.9400005340576 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     22.9400005340576 / [degC] Focuser temperature" status=0
Record 55: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 56: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 57: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 58: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 59: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 60: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 61: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 62: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 63: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 64: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 65: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 66: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 67: "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_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/d_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits :)

Spent 0.456517 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-07-30.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-07-30.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/d_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-07-30.fit 9576 6388  16 bitpix
Avarage count on flat field image: 19899.553568
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits :)


No overscan detected - all values seem high! (left_median=13115.0, right_median=15628.5)
renamed 'mff_TTUQ2b1x1_2026-07-30.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.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_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
Previews of the CALIBRATED second-epoch images:


fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits



fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits




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

  ./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
  
Last  image: 2461256.94415991 04.08.2026 10:39:25.416 UTC
WARNING: VaST exited with code 1 on the field Gem-03-Q2b1x1 AFTER completing the measurements. This is a memory-management crash during cleanup (a VaST bug to report), NOT a wrong field / clouds / bad focus. The lightcurves were written, so the transient search continues.
____ VaST output (crashed during memory cleanup; the measurements above are complete) ____

--==VaST 1.0rc90==--

Parsing command line arguments...
opt 'F': Will NOT create flag images for SExtractor
opt '5': 5.000000 pix is the new fixed star matching radius!
opt 'b': Using 500 reference stars for image matching!
opt '3': Will try to select best aperture for each source!
opt 'y': 0 SysRem iterations will be conducted!
opt 't 4': robust linear magnitude calibration (vary zero-point and slope)
opt 'x': 99 is the maximum acceptable SExtractor flag!
WARNING: disabling the mag-size filter in order not to reject blended stars.
opt 'u': Stick with UTC time system, no conversion to TT will be done!
opt 'f': Run ./find_candidates manually!
opt 'k': "JD" keyword in FITS image header will be ignored!
INFO from vast_remove_directory(): Could not open directory: symlinks_to_images
INFO from vast_remove_directory(): Could not open directory: converted_images
INFO from vast_remove_directory(): Could not open directory: unpacked_images

Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.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_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d)...  OK
Found a system-wide installation of SExtractor
Cleaning old outNNNNN.dat files.
Done with cleaning!

 VaST was started with the following command line: 
./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits 


Preparing to process 4 input FITS images...


######## Forcing special settings for the transient detection ########
transient search mode: disabling the mag-size filter as it should be switched off when running a transient search!
transient search mode: disabling the bad image filter as it will not help during the transient search!
transient search mode: will not try to gues image saturation limit
transient search mode: no UTC-to-TT time system conversion will be performed!!!
transient search mode: setting the maximum acceptable SExtractor flag to 3
transient search mode: disabling rejectin of images with elliptical stars
transient search mode: not discarding large sources
################
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
Setting the fixed star match radius of 5.00 pix
We have 4 images to process.
SExtractor catalog cache: restored Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits catalog from cache
SExtractor catalog cache: restored Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits catalog from cache
Running SExtractor in 3 parallel threads...
Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.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)
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
The above guess is baExcluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
sed on the non-default gain value specified in default.sex by user
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.2,6.2,5.6,6.9,7.5,8.1 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.1,6.1,5.5,6.7,7.3,7.9 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits


Done with SExtractor!

TIMING SExtractor: 1 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_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: 2026-01-18T02:49:11.1013391
Setting observation time using DATE-OBS keyword: 2026-01-18T02:49:11.1013391

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-01-18T02:49:11.101
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
Exposure 20 sec, 18.01.2026 02:49:11.101 UTC = JD(UTC) 2461058.61760534 mid. exp.
The reference image star  7520.620    20.630 is rejected, see bad_region.lst
The reference image star  8176.605    14.979 is rejected, see bad_region.lst
The reference image star  8778.759    14.682 is rejected, see bad_region.lst
The reference image star  8906.577    13.551 is rejected, see bad_region.lst
The reference image star  8927.032    13.096 is rejected, see bad_region.lst
The reference image star  9448.317    12.530 is rejected, see bad_region.lst
The reference image star  8377.349    11.329 is rejected, see bad_region.lst
The reference image star  8322.834    12.562 is rejected, see bad_region.lst
The reference image star  7865.144    10.957 is rejected, see bad_region.lst
The reference image star  9168.829    27.154 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: 22511, (22509 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: 6714
 * rejected close to frame edge: 104
 * 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): 9
 * 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: -7.79
Detection limit from the magnitude-SNR relation= -7.8  (5.0 sigma detection)
The simple faintest star detection limit= -9.8
80 percent brightest stars detection limit= -10.7
Selected detection limit= -10.7
Final detection limit= -10.7 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.06.5 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): 18
 * 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'.
    24299 * detected, using  539/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.018807, number_of_ambiguous_matches=457 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=15707 inliers=15707 rms 0.55 -> 0.44 pix, max corner correction 1.8 pix] fraction_of_ambiguous_matches= 0.011029, number_of_ambiguous_matches=268 
15701 * matched, [CVPOLY iter 2: order=1 pairs=15701 inliers=15701 rms 0.25 -> 0.25 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.005926, number_of_ambiguous_matches=144 
15698 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=15698 inliers=15698 rms 0.18 -> 0.18 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.002017, number_of_ambiguous_matches=49 
15693 * matched (3rd iteration). Success!
  rotation [degrees] = 177.372
    24299 stars detected, 15693 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 13845, N_manually_selected_comparison_stars = 0
Using 13845 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 13844 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00002*X_pix +0.00001*Y_pix +0.04588
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 13826 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.81
    31117 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  210824 kB used, 248308 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.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: 2026-08-04T10:39:25.4168402
Setting observation time using DATE-OBS keyword: 2026-08-04T10:39:25.4168402

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-04T10:39:25.416
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
The star  7536.451   103.650 is rejected, see bad_region.lst
The star  7559.158   132.099 is rejected, see bad_region.lst
The star  7520.781   222.014 is rejected, see bad_region.lst
The star  9194.957   462.571 is rejected, see bad_region.lst
The star  9299.271   506.480 is rejected, see bad_region.lst
The star  7949.940   513.635 is rejected, see bad_region.lst
The star  8189.348   568.451 is rejected, see bad_region.lst
The star  8610.451   582.196 is rejected, see bad_region.lst
The star  8845.812   618.781 is rejected, see bad_region.lst
The star  9053.524   724.616 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 1684
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 156
 * rejected close to frame edge: 18
 * 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'.
     1684 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=1678 inliers=1678 rms 1.95 -> 0.41 pix, max corner correction 21.5 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1678 * matched, [CVPOLY iter 2: order=3 pairs=1678 inliers=1678 rms 0.22 -> 0.19 pix, max corner correction 3.2 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1678 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=1678 inliers=1678 rms 0.19 -> 0.19 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1678 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.885
     1684 stars detected,  1678 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 851, N_manually_selected_comparison_stars = 0
Using 851 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 847 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00013*X_pix -0.00004*Y_pix -0.20161
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 847 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.62
 ERROR!!! Magnitude calibration failure. Dropping image. 
    31117 objects stored in memory (1000000 max.)
memory:  209876 kB used, 248308 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.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: 2026-08-04T10:40:13.1020005
Setting observation time using DATE-OBS keyword: 2026-08-04T10:40:13.1020005

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-04T10:40:13.102
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
The star  7540.076    96.528 is rejected, see bad_region.lst
The star  7562.743   125.001 is rejected, see bad_region.lst
The star  7524.324   214.846 is rejected, see bad_region.lst
The star  9199.414   455.128 is rejected, see bad_region.lst
The star  7953.786   506.390 is rejected, see bad_region.lst
The star  8193.129   561.277 is rejected, see bad_region.lst
The star  8614.540   574.846 is rejected, see bad_region.lst
The star  8849.519   611.755 is rejected, see bad_region.lst
The star  9057.441   717.513 is rejected, see bad_region.lst
The star  7910.538   749.696 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 1699
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 162
 * rejected close to frame edge: 16
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>6.1 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
     1699 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=1690 inliers=1690 rms 1.83 -> 0.17 pix, max corner correction 23.4 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1690 * matched, [CVPOLY iter 2: order=1 pairs=1690 inliers=1690 rms 0.17 -> 0.17 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1690 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=1690 inliers=1690 rms 0.17 -> 0.17 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1690 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.888
     1699 stars detected,  1690 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 863, N_manually_selected_comparison_stars = 0
Using 863 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 857 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00013*X_pix -0.00004*Y_pix -0.19917
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 857 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.60
 ERROR!!! Magnitude calibration failure. Dropping image. 
    31117 objects stored in memory (1000000 max.)
memory:  209872 kB used, 248308 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 1 seconds
Done with measurements! =)

Total number of measurements 46810 (46810 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  2420 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  7023 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  1502 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  1413 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  3335 stars

done!  =)
TIMING select_aperture: 1 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: 15584 objects, the longest string is 385 bytes.
Allocating memory for resorting the file.



----***** VaST processing WARNING *****----
You asked VaST to process 4 images, but only 1 were actually matched to the reference one.
Please investigate this!



**************************************************************
This error might be a bug, but it is far more likely that it is caused by 
inappropriate input data. A few simple things to check in the diagnostic
messages printed above (or the vast*.log files):
 * How many of the input images are matched?
 * Does the number of detected stars on each image look reasonable?
 * Do images have a sufficient overlap of at least about 20 percent?

You may run
 ./sextract_single_image /path/to/my/image/file.fit
to see how well VaST detects stars with the current SExtractor settings
(star detection settings can be changed in the default.sex configuration
file, see various examples in the VaST directory).

If you cannot identify the problem, please e-mail Kirill Sokolovsky 
Please try to describe the problem in details and, if possible, attach vast_summary.log
file and a few example images. If the images are too big to be sent by e-mail, please 
upload them through a web-form http://scan.sai.msu.ru/upload/
**************************************************************

Low percentage of matched images - we'll declare this an unsuccessful VaST run (exit code 1)
_____________________
SExtractor catalog cache: saved Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits.cat to cache
SExtractor catalog cache: saved Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_onlybrightstars_v1
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
Last  image: 2461256.94415991 04.08.2026 10:39:25.416 UTC
ERROR running VaST on the field Gem-03-Q2b1x1 (less than 4 images processed)
exp_start= 18.01.2026 02:49:11.101  exp=   20.000  JD= 2461058.61760534  ap=  6.2  rotation=   0.000  *detected= 22511  *matched= 22511  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
exp_start= 22.03.2026 04:25:36.412  exp=   20.000  JD= 2461121.68456495  ap=  6.5  rotation= 177.372  *detected= 24299  *matched= 15693  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits
exp_start= 04.08.2026 10:39:25.416  exp=   20.000  JD= 2461256.94415991  ap=  6.2  rotation=  -0.885  *detected=  1684  *matched=  1678  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
exp_start= 04.08.2026 10:40:13.102  exp=   20.000  JD= 2461256.94471183  ap=  6.1  rotation=  -0.888  *detected=  1699  *matched=  1690  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
wait
*------ default.sex.telephoto_lens_vSTL ------*
'default.sex.telephoto_lens_vSTL' -> 'default.sex'
Starting VaST with default.sex.telephoto_lens_vSTL

  ./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
  
Last  image: 2461256.94415991 04.08.2026 10:39:25.416 UTC
WARNING: VaST exited with code 1 on the field Gem-03-Q2b1x1 AFTER completing the measurements. This is a memory-management crash during cleanup (a VaST bug to report), NOT a wrong field / clouds / bad focus. The lightcurves were written, so the transient search continues.
____ VaST output (crashed during memory cleanup; the measurements above are complete) ____

--==VaST 1.0rc90==--

Parsing command line arguments...
opt 'F': Will NOT create flag images for SExtractor
opt '5': 5.000000 pix is the new fixed star matching radius!
opt 'b': Using 500 reference stars for image matching!
opt '3': Will try to select best aperture for each source!
opt 'y': 0 SysRem iterations will be conducted!
opt 't 4': robust linear magnitude calibration (vary zero-point and slope)
opt 'x': 99 is the maximum acceptable SExtractor flag!
WARNING: disabling the mag-size filter in order not to reject blended stars.
opt 'u': Stick with UTC time system, no conversion to TT will be done!
opt 'f': Run ./find_candidates manually!
opt 'k': "JD" keyword in FITS image header will be ignored!
INFO from vast_remove_directory(): Could not open directory: symlinks_to_images
INFO from vast_remove_directory(): Could not open directory: converted_images
INFO from vast_remove_directory(): Could not open directory: unpacked_images

Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.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_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d)...  OK
Found a system-wide installation of SExtractor
Cleaning old outNNNNN.dat files.
Done with cleaning!

 VaST was started with the following command line: 
./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits 


Preparing to process 4 input FITS images...


######## Forcing special settings for the transient detection ########
transient search mode: disabling the mag-size filter as it should be switched off when running a transient search!
transient search mode: disabling the bad image filter as it will not help during the transient search!
transient search mode: will not try to gues image saturation limit
transient search mode: no UTC-to-TT time system conversion will be performed!!!
transient search mode: setting the maximum acceptable SExtractor flag to 3
transient search mode: disabling rejectin of images with elliptical stars
transient search mode: not discarding large sources
################
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
Setting the fixed star match radius of 5.00 pix
We have 4 images to process.
SExtractor catalog cache: restored Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits catalog from cache
SExtractor catalog cache: restored Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits catalog from cache
Running SExtractor in 3 parallel threads...
Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.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_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.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_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.6,4.6,4.1,5.1,5.5,6.0 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.5,4.5,4.0,5.0,5.4,5.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits


Done with SExtractor!

TIMING SExtractor: 5 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_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_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: 2026-01-18T02:49:11.1013391
Setting observation time using DATE-OBS keyword: 2026-01-18T02:49:11.1013391

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-01-18T02:49:11.101
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
Exposure 20 sec, 18.01.2026 02:49:11.101 UTC = JD(UTC) 2461058.61760534 mid. exp.
The reference image star  7885.762     1.418 is rejected, see bad_region.lst
The reference image star  8031.391     1.183 is rejected, see bad_region.lst
The reference image star  8071.086     1.057 is rejected, see bad_region.lst
The reference image star  8122.473     1.196 is rejected, see bad_region.lst
The reference image star  8407.612     1.225 is rejected, see bad_region.lst
The reference image star  9080.627     1.138 is rejected, see bad_region.lst
The reference image star  9306.577     1.205 is rejected, see bad_region.lst
The reference image star  7760.431     2.990 is rejected, see bad_region.lst
The reference image star  7586.654     1.448 is rejected, see bad_region.lst
The reference image star  7995.825     1.327 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: 167747, (167747 good for image matching)
 * rejected as having no flux measurement: 1
 * rejected as having SNR<3.0: 37
 * rejected inside rectangles defined in bad_region.lst: 37785
 * rejected close to frame edge: 711
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.6 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.41
Detection limit from the magnitude-SNR relation= -7.4  (5.0 sigma detection)
The simple faintest star detection limit= -6.6
80 percent brightest stars detection limit= -8.0
Selected detection limit= -8.0
Final detection limit= -8.0 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.05.1 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 6
 * 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'.
    157565 * detected, using  469/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.009425, number_of_ambiguous_matches=1581 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=112819 inliers=112819 rms 0.42 -> 0.30 pix, max corner correction 1.7 pix] fraction_of_ambiguous_matches= 0.009401, number_of_ambiguous_matches=1577 
112824 * matched, [CVPOLY iter 2: order=1 pairs=112824 inliers=112824 rms 0.30 -> 0.30 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.009395, number_of_ambiguous_matches=1576 
112825 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=112825 inliers=112825 rms 0.30 -> 0.30 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.009395, number_of_ambiguous_matches=1576 
112825 * matched (3rd iteration). Success!
  rotation [degrees] = 177.371
    157565 stars detected, 112825 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 90409, N_manually_selected_comparison_stars = 0
Using 90409 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 90399 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00002*X_pix +0.00001*Y_pix +0.05373
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 79958 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.49
    212487 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  344396 kB used, 370940 kB peak, 65263848 kB available RAM
Total number of measurements 325312 (325312 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_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.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: 2026-08-04T10:39:25.4168402
Setting observation time using DATE-OBS keyword: 2026-08-04T10:39:25.4168402

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-04T10:39:25.416
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
The star  9127.708     4.241 is rejected, see bad_region.lst
The star  7543.248    28.537 is rejected, see bad_region.lst
The star  8134.168    42.076 is rejected, see bad_region.lst
The star  8907.295    61.554 is rejected, see bad_region.lst
The star  7544.736    66.160 is rejected, see bad_region.lst
The star  8198.770    74.933 is rejected, see bad_region.lst
The star  9009.877    75.055 is rejected, see bad_region.lst
The star  7536.448   103.652 is rejected, see bad_region.lst
The star  8569.876    98.181 is rejected, see bad_region.lst
The star  8173.062   110.590 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 17388
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 1
 * rejected inside rectangles defined in bad_region.lst: 1432
 * rejected close to frame edge: 84
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.6 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 64
 * 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'.
    17388 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000085, number_of_ambiguous_matches=18 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=17094 inliers=17094 rms 1.67 -> 0.48 pix, max corner correction 14.3 pix] fraction_of_ambiguous_matches= 0.000042, number_of_ambiguous_matches=9 
17289 * matched, [CVPOLY iter 2: order=3 pairs=17289 inliers=17289 rms 0.40 -> 0.25 pix, max corner correction 8.4 pix] fraction_of_ambiguous_matches= 0.000042, number_of_ambiguous_matches=9 
17291 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=17291 inliers=17291 rms 0.25 -> 0.25 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000042, number_of_ambiguous_matches=9 
17291 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.845
    17388 stars detected, 17291 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 10945, N_manually_selected_comparison_stars = 0
Using 10945 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 10431 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00015*X_pix -0.00005*Y_pix -0.24053
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 10431 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.32
 ERROR!!! Magnitude calibration failure. Dropping image. 
    212487 objects stored in memory (1000000 max.)
memory:  473812 kB used, 622932 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.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: 2026-08-04T10:40:13.1020005
Setting observation time using DATE-OBS keyword: 2026-08-04T10:40:13.1020005

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-04T10:40:13.102
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
The star  7547.089    21.383 is rejected, see bad_region.lst
The star  8911.382    54.005 is rejected, see bad_region.lst
The star  7548.913    59.427 is rejected, see bad_region.lst
The star  8202.649    67.578 is rejected, see bad_region.lst
The star  9013.936    67.577 is rejected, see bad_region.lst
The star  7540.074    96.528 is rejected, see bad_region.lst
The star  8176.916   103.435 is rejected, see bad_region.lst
The star  7561.653   100.834 is rejected, see bad_region.lst
The star  9189.340   102.732 is rejected, see bad_region.lst
The star  7562.741   125.003 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 18345
 * rejected as having no flux measurement: 1
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 1474
 * rejected close to frame edge: 111
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.5 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 38
 * 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'.
    18345 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000160, number_of_ambiguous_matches=34 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=17900 inliers=17900 rms 1.76 -> 0.53 pix, max corner correction 15.5 pix] fraction_of_ambiguous_matches= 0.000099, number_of_ambiguous_matches=21 
18093 * matched, [CVPOLY iter 2: order=3 pairs=18093 inliers=18093 rms 0.39 -> 0.30 pix, max corner correction 6.8 pix] fraction_of_ambiguous_matches= 0.000099, number_of_ambiguous_matches=21 
18092 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=18092 inliers=18092 rms 0.30 -> 0.30 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000099, number_of_ambiguous_matches=21 
18092 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.849
    18345 stars detected, 18092 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 11478, N_manually_selected_comparison_stars = 0
Using 11478 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 10915 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00015*X_pix -0.00005*Y_pix -0.23100
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 10915 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.29
 ERROR!!! Magnitude calibration failure. Dropping image. 
    212487 objects stored in memory (1000000 max.)
memory:  474208 kB used, 622932 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 5 seconds
Done with measurements! =)

Total number of measurements 325312 (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 32347 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 31050 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 11620 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 14684 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 23124 stars

done!  =)
TIMING select_aperture: 6 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: 112370 objects, the longest string is 386 bytes.
Allocating memory for resorting the file.



----***** VaST processing WARNING *****----
You asked VaST to process 4 images, but only 1 were actually matched to the reference one.
Please investigate this!



**************************************************************
This error might be a bug, but it is far more likely that it is caused by 
inappropriate input data. A few simple things to check in the diagnostic
messages printed above (or the vast*.log files):
 * How many of the input images are matched?
 * Does the number of detected stars on each image look reasonable?
 * Do images have a sufficient overlap of at least about 20 percent?

You may run
 ./sextract_single_image /path/to/my/image/file.fit
to see how well VaST detects stars with the current SExtractor settings
(star detection settings can be changed in the default.sex configuration
file, see various examples in the VaST directory).

If you cannot identify the problem, please e-mail Kirill Sokolovsky 
Please try to describe the problem in details and, if possible, attach vast_summary.log
file and a few example images. If the images are too big to be sent by e-mail, please 
upload them through a web-form http://scan.sai.msu.ru/upload/
**************************************************************

Low percentage of matched images - we'll declare this an unsuccessful VaST run (exit code 1)
_____________________
SExtractor catalog cache: saved Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits.cat to cache
SExtractor catalog cache: saved Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_vSTL
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
Last  image: 2461256.94415991 04.08.2026 10:39:25.416 UTC
ERROR running VaST on the field Gem-03-Q2b1x1 (less than 4 images processed)
exp_start= 18.01.2026 02:49:11.101  exp=   20.000  JD= 2461058.61760534  ap=  4.6  rotation=   0.000  *detected= 167747  *matched= 167747  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-01-17_20-49-11_20.00sec_-14.90C_LIGHT_0057.fits
exp_start= 22.03.2026 04:25:36.412  exp=   20.000  JD= 2461121.68456495  ap=  5.1  rotation= 177.371  *detected= 157565  *matched= 112825  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Gem-03-Q2b1x1_2026-03-21_23-25-36_20.00sec_-15.00C_LIGHT_0041.fits
exp_start= 04.08.2026 10:39:25.416  exp=   20.000  JD= 2461256.94415991  ap=  4.6  rotation=  -0.845  *detected= 17388  *matched= 17291  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-39-25_20.00sec_-0.00C_LIGHT_0512.fits
exp_start= 04.08.2026 10:40:13.102  exp=   20.000  JD= 2461256.94471183  ap=  4.5  rotation=  -0.849  *detected= 18345  *matched= 18092  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Gem-03-Q2b1x1_061802_TTUQ2b1x1_2120132_GyMf0c9d/fd_Gem-03-Q2b1x1_2026-08-04_05-40-13_20.00sec_0.00C_LIGHT_0513.fits
########### 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

=== Transient Factory Profiling ===
Started: Tue Aug  4 06:21:04 CDT 2026
=======================================
TIMING SExtractor: 1 seconds
TIMING matching_and_photometry: 1 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 1 seconds
    VAST_RUN_default.sex.telephoto_lens_onlybrightstars_v1: 3s (0.05 min)
TIMING SExtractor: 5 seconds
TIMING matching_and_photometry: 5 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 6 seconds
    VAST_RUN_default.sex.telephoto_lens_vSTL: 20s (0.33 min)
FIELD_Gem-03-Q2b1x1: 35s (0.58 min)
=======================================
TOTAL_RUNTIME: 37s (0.62 min)
Finished: Tue Aug  4 06:21:41 CDT 2026