FITS images used in this processing run:

Field Her-08-Q2b1x1 reference image: Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
Field Her-08-Q2b1x1 reference image: Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits
Field Her-08-Q2b1x1 second-epoch image: Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits
Field Her-08-Q2b1x1 second-epoch image: Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits

WARNING: VaST exited with code 1 on the field Her-08-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: 2461203.88061436 12.06.2026 09:07:55.081   /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
First image: 2461203.88061436 12.06.2026 09:07:55.081   /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
Last  image: 2461203.88116186 12.06.2026 09:08:42.385   /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.51
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):  19634
Objects passed selection criteria:  19476
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: 21117
Average stars matched: 20315 (96.2021 %)
Memory usage VmPeak:   246092 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Thu Aug  6 15:05:04 CDT 2026
VaST build number  1.0rc89-190-gdf2934b0
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-08-06)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Sat Aug  8 04:43:55 CDT 2026
Host name: tau
***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################
WARNING: VaST exited with code 1 on the field Her-08-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: 2461203.88061436 12.06.2026 09:07:55.081   /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
First image: 2461203.88061436 12.06.2026 09:07:55.081   /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
Last  image: 2461203.88116186 12.06.2026 09:08:42.385   /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.20
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: 16 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):  155123
Objects passed selection criteria:  154485
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: 171278
Average stars matched: 163702 (95.5762 %)
Memory usage VmPeak:   561468 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Thu Aug  6 15:05:04 CDT 2026
VaST build number  1.0rc89-190-gdf2934b0
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-08-06)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Sat Aug  8 04:44:14 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: 
Her-08-Q2b1x1
#######################################
########### Starting Her-08-Q2b1x1 ###########
Processing Her-08-Q2b1x1
server tau has sufficient free disk space available: 435162 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 435162 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.png' -> 'transient_report/Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits_preview.png'

Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits


renamed 'Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.png' -> 'transient_report/Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits_preview.png'

Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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= 467.6022
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 667.1151
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1694.0796
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 345.1065
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1688.8216
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 347.6858
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 3.62291
INFO:                  SECOND_EPOCH__SD_ratio= 0.007
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 =     23.7399997711182 / [degC] Focuser temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.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= '2026-08-08T04:37:51.0680781' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-08T09:37:51.0680781' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61260.4012855091 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-08T09:38:00.9688050' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61260.4014000925 / 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      =     276.920395159204 / [deg] RA of telescope" status=0
Record 32: "DEC     =     21.9997388352869 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     18.1555555555556 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     284.798055555556 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.17987951764038 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Her-08'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '18 27 42'           / [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  =                20457 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20457 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     23.7399997711182 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     23.7399997711182 / [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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/d_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits :)

Spent 0.468277 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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/d_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                  0.0 / [degC] CCD temperature
FOCTEMP =     23.5799999237061 / [degC] Focuser temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits 
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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= '2026-08-08T04:38:32.9969017' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-08T09:38:32.9969017' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61260.4017707868 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-08T09:38:42.8969864' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61260.4018853703 / 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      =     276.920395160332 / [deg] RA of telescope" status=0
Record 32: "DEC     =     21.9997388073336 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     18.0147222222222 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     284.883333333333 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.20339844438176 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Her-08'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '18 27 42'           / [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  =                20457 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20457 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     23.5799999237061 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     23.5799999237061 / [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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/d_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits :)

Spent 0.465518 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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/d_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits
Previews of the CALIBRATED second-epoch images:


fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits



fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits
  
Last  image: 2461260.90140125 08.08.2026 09:37:51.068 UTC
WARNING: VaST exited with code 1 on the field Her-08-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 ...

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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4)...  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/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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 Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits catalog from cache
SExtractor catalog cache: restored Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.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/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits > image00003.cat.sex_log 2>&1
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.1,6.1,5.5,6.7,7.3,7.9 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.1,6.1,5.5,6.7,7.4,8.0 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.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: 2026-06-12T09:07:55.0812884
Setting observation time using DATE-OBS keyword: 2026-06-12T09:07:55.0812884

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-06-12T09:07:55.081
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
Exposure 20 sec, 12.06.2026 09:07:55.081 UTC = JD(UTC) 2461203.88061436 mid. exp.
The reference image star  7917.204    20.845 is rejected, see bad_region.lst
The reference image star  8709.068    19.496 is rejected, see bad_region.lst
The reference image star  8857.420    15.846 is rejected, see bad_region.lst
The reference image star  8417.446    14.239 is rejected, see bad_region.lst
The reference image star  7996.310    13.621 is rejected, see bad_region.lst
The reference image star  7983.712    10.700 is rejected, see bad_region.lst
The reference image star  7947.132    10.563 is rejected, see bad_region.lst
The reference image star  8314.999     9.784 is rejected, see bad_region.lst
The reference image star  7837.976    14.894 is rejected, see bad_region.lst
The reference image star  8321.802     5.972 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: 20996, (20996 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: 4995
 * rejected close to frame edge: 99
 * 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): 2
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.51
Detection limit from the magnitude-SNR relation= -7.5  (5.0 sigma detection)
The simple faintest star detection limit= -9.4
80 percent brightest stars detection limit= -10.4
Selected detection limit= -10.4
Final detection limit= -10.4 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.06.1 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): 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'.
    21238 * detected, using  505/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.019917, number_of_ambiguous_matches=423 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=19657 inliers=19657 rms 0.45 -> 0.45 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.012289, number_of_ambiguous_matches=261 
19643 * matched, [CVPOLY iter 2: order=2 pairs=19643 inliers=19643 rms 0.22 -> 0.22 pix, max corner correction 0.3 pix] fraction_of_ambiguous_matches= 0.007675, number_of_ambiguous_matches=163 
19639 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=19639 inliers=19639 rms 0.15 -> 0.15 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.003437, number_of_ambiguous_matches=73 
19634 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.002
    21238 stars detected, 19634 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 17794, N_manually_selected_comparison_stars = 0
Using 17794 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 17794 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix -0.00000*Y_pix +0.00142
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 17792 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.51
    22600 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  209212 kB used, 246092 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.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: 2026-08-08T09:37:51.0680781
Setting observation time using DATE-OBS keyword: 2026-08-08T09:37:51.0680781

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-08T09:37:51.068
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits
The star  8006.355   253.579 is rejected, see bad_region.lst
The star  7519.756   424.967 is rejected, see bad_region.lst
The star  7685.973   455.469 is rejected, see bad_region.lst
The star  9194.142   543.978 is rejected, see bad_region.lst
The star  9220.739  1038.076 is rejected, see bad_region.lst
The star  7551.244  1056.561 is rejected, see bad_region.lst
The star  9526.910  1171.148 is rejected, see bad_region.lst
The star  9493.595  1304.695 is rejected, see bad_region.lst
The star  7735.565  1636.210 is rejected, see bad_region.lst
The star  8407.244  1699.979 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 2081
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 66
 * rejected close to frame edge: 7
 * 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'.
     2081 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000133, number_of_ambiguous_matches=3 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=2062 inliers=2062 rms 0.59 -> 0.27 pix, max corner correction 9.9 pix] fraction_of_ambiguous_matches= 0.000133, number_of_ambiguous_matches=3 
2061 * matched, [CVPOLY iter 2: order=1 pairs=2061 inliers=2061 rms 0.12 -> 0.12 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000133, number_of_ambiguous_matches=3 
2061 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=2061 inliers=2061 rms 0.12 -> 0.12 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000133, number_of_ambiguous_matches=3 
2061 * matched (3rd iteration). Success!
  rotation [degrees] =   0.482
     2081 stars detected,  2061 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1507, N_manually_selected_comparison_stars = 0
Using 1507 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 1459 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00022*X_pix +0.00015*Y_pix -0.84816
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 1459 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.96
 ERROR!!! Magnitude calibration failure. Dropping image. 
    22600 objects stored in memory (1000000 max.)
memory:  208608 kB used, 246092 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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: 2026-08-08T09:38:32.9969017
Setting observation time using DATE-OBS keyword: 2026-08-08T09:38:32.9969017

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-08T09:38:32.996
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits
The star  7524.163   422.380 is rejected, see bad_region.lst
The star  9198.673   541.188 is rejected, see bad_region.lst
The star  9225.255  1035.289 is rejected, see bad_region.lst
The star  9205.393  1105.370 is rejected, see bad_region.lst
The star  9531.282  1168.153 is rejected, see bad_region.lst
The star  9140.098  1196.970 is rejected, see bad_region.lst
The star  9498.008  1301.904 is rejected, see bad_region.lst
The star  7740.087  1633.536 is rejected, see bad_region.lst
The star  8411.783  1697.202 is rejected, see bad_region.lst
The star  9015.105  1814.692 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 2151
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 84
 * rejected close to frame edge: 8
 * 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): 2
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     2151 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000088, number_of_ambiguous_matches=2 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=2135 inliers=2135 rms 0.59 -> 0.27 pix, max corner correction 10.5 pix] fraction_of_ambiguous_matches= 0.000088, number_of_ambiguous_matches=2 
2134 * matched, [CVPOLY iter 2: order=1 pairs=2134 inliers=2134 rms 0.13 -> 0.13 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000088, number_of_ambiguous_matches=2 
2134 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=2134 inliers=2134 rms 0.13 -> 0.13 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000088, number_of_ambiguous_matches=2 
2134 * matched (3rd iteration). Success!
  rotation [degrees] =   0.488
     2151 stars detected,  2134 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1577, N_manually_selected_comparison_stars = 0
Using 1577 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 1533 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00023*X_pix +0.00015*Y_pix -0.85991
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 1533 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.96
 ERROR!!! Magnitude calibration failure. Dropping image. 
    22600 objects stored in memory (1000000 max.)
memory:  208608 kB used, 246092 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 0 seconds
Done with measurements! =)

Total number of measurements 42234 (42234 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  4749 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  5824 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  2597 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  2513 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  3951 stars

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

Computing, please wait a bit
..................................................................................................................................................................................................
vast_lightcurve_statistics.log: 19476 objects, the longest string is 383 bytes.
Allocating memory for resorting the file.



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



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

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

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

Low percentage of matched images - we'll declare this an unsuccessful VaST run (exit code 1)
_____________________
SExtractor catalog cache: saved Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits.cat to cache
SExtractor catalog cache: saved Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.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/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits
Last  image: 2461260.90140125 08.08.2026 09:37:51.068 UTC
ERROR running VaST on the field Her-08-Q2b1x1 (less than 4 images processed)
exp_start= 12.06.2026 09:07:55.081  exp=   20.000  JD= 2461203.88061436  ap=  6.1  rotation=   0.000  *detected= 20996  *matched= 20996  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
exp_start= 12.06.2026 09:08:42.385  exp=   20.000  JD= 2461203.88116186  ap=  6.1  rotation=  -0.002  *detected= 21238  *matched= 19634  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits
exp_start= 08.08.2026 09:37:51.068  exp=   20.000  JD= 2461260.90140125  ap=  6.1  rotation=   0.482  *detected=  2081  *matched=  2061  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits
exp_start= 08.08.2026 09:38:32.996  exp=   20.000  JD= 2461260.90188653  ap=  6.1  rotation=   0.488  *detected=  2151  *matched=  2134  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits
  
Last  image: 2461260.90140125 08.08.2026 09:37:51.068 UTC
WARNING: VaST exited with code 1 on the field Her-08-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 ...

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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4)...  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/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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 Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits catalog from cache
SExtractor catalog cache: restored Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.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/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.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)
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2Excluded a total of 31 image regions  (defined in bad_region.lst).
b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits
The above guess is based on the non-default gain value specified in default.sex by user
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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.5,4.5,4.0,4.9,5.4,5.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.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: 2026-06-12T09:07:55.0812884
Setting observation time using DATE-OBS keyword: 2026-06-12T09:07:55.0812884

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-06-12T09:07:55.081
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
Exposure 20 sec, 12.06.2026 09:07:55.081 UTC = JD(UTC) 2461203.88061436 mid. exp.
The reference image star  8211.391     1.737 is rejected, see bad_region.lst
The reference image star  8528.374     1.572 is rejected, see bad_region.lst
The reference image star  9303.466     1.939 is rejected, see bad_region.lst
The reference image star  8233.855     2.318 is rejected, see bad_region.lst
The reference image star  8781.762     1.308 is rejected, see bad_region.lst
The reference image star  9306.082     1.736 is rejected, see bad_region.lst
The reference image star  7692.042     4.787 is rejected, see bad_region.lst
The reference image star  8203.418     5.417 is rejected, see bad_region.lst
The reference image star  7894.781     1.467 is rejected, see bad_region.lst
The reference image star  8964.362     1.991 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: 172280, (172280 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 46
 * rejected inside rectangles defined in bad_region.lst: 21081
 * rejected close to frame edge: 786
 * 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): 8
 * 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: -7.20
Detection limit from the magnitude-SNR relation= -7.2  (5.0 sigma detection)
The simple faintest star detection limit= -6.5
80 percent brightest stars detection limit= -7.7
Selected detection limit= -7.7
Final detection limit= -7.7 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.04.6 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 8
 * 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'.
    170277 * detected, using  494/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.017553, number_of_ambiguous_matches=3024 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=155124 inliers=155124 rms 0.32 -> 0.32 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.017570, number_of_ambiguous_matches=3027 
155123 * matched, [CVPOLY iter 2: order=1 pairs=155123 inliers=155123 rms 0.31 -> 0.31 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.017564, number_of_ambiguous_matches=3026 
155123 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=155123 inliers=155123 rms 0.31 -> 0.31 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.017564, number_of_ambiguous_matches=3026 
155123 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.002
    170277 stars detected, 155123 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 130328, N_manually_selected_comparison_stars = 0
Using 130328 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 130318 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix +0.00000*Y_pix +0.00033
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 124590 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.20
    187434 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  348468 kB used, 375152 kB peak, 65263848 kB available RAM
Total number of measurements 342557 (342557 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_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.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: 2026-08-08T09:37:51.0680781
Setting observation time using DATE-OBS keyword: 2026-08-08T09:37:51.0680781

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-08T09:37:51.068
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits
The star  7608.113    10.293 is rejected, see bad_region.lst
The star  8083.693    90.621 is rejected, see bad_region.lst
The star  7559.285   104.861 is rejected, see bad_region.lst
The star  7860.210   125.403 is rejected, see bad_region.lst
The star  8133.442   146.298 is rejected, see bad_region.lst
The star  9011.490   202.544 is rejected, see bad_region.lst
The star  9056.410   204.362 is rejected, see bad_region.lst
The star  7582.380   226.536 is rejected, see bad_region.lst
The star  7669.631   230.896 is rejected, see bad_region.lst
The star  7658.889   236.990 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 25150
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 4
 * rejected inside rectangles defined in bad_region.lst: 482
 * rejected close to frame edge: 139
 * 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): 81
 * 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'.
    25150 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000085, number_of_ambiguous_matches=16 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=24971 inliers=24971 rms 0.60 -> 0.23 pix, max corner correction 9.3 pix] fraction_of_ambiguous_matches= 0.000080, number_of_ambiguous_matches=15 
24971 * matched, [CVPOLY iter 2: order=1 pairs=24971 inliers=24971 rms 0.22 -> 0.22 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000080, number_of_ambiguous_matches=15 
24971 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=24971 inliers=24971 rms 0.22 -> 0.22 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000080, number_of_ambiguous_matches=15 
24971 * matched (3rd iteration). Success!
  rotation [degrees] =   0.483
    25150 stars detected, 24971 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 18255, N_manually_selected_comparison_stars = 0
Using 18255 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 16878 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00023*X_pix +0.00015*Y_pix -0.95576
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 16878 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.63
 ERROR!!! Magnitude calibration failure. Dropping image. 
    187434 objects stored in memory (1000000 max.)
memory:  470504 kB used, 561468 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.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: 2026-08-08T09:38:32.9969017
Setting observation time using DATE-OBS keyword: 2026-08-08T09:38:32.9969017

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-08T09:38:32.996
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits
The star  7611.947     7.134 is rejected, see bad_region.lst
The star  7563.593   102.295 is rejected, see bad_region.lst
The star  9016.017   199.958 is rejected, see bad_region.lst
The star  9061.245   201.156 is rejected, see bad_region.lst
The star  7663.509   234.366 is rejected, see bad_region.lst
The star  7605.183   236.867 is rejected, see bad_region.lst
The star  8888.989   243.003 is rejected, see bad_region.lst
The star  8010.810   250.986 is rejected, see bad_region.lst
The star  9433.084   266.029 is rejected, see bad_region.lst
The star  9512.390   288.977 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 25627
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 2
 * rejected inside rectangles defined in bad_region.lst: 563
 * rejected close to frame edge: 127
 * 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): 102
 * 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'.
    25627 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000069, number_of_ambiguous_matches=13 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=25428 inliers=25428 rms 0.53 -> 0.23 pix, max corner correction 10.2 pix] fraction_of_ambiguous_matches= 0.000075, number_of_ambiguous_matches=14 
25433 * matched, [CVPOLY iter 2: order=1 pairs=25433 inliers=25433 rms 0.23 -> 0.23 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000075, number_of_ambiguous_matches=14 
25433 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=25433 inliers=25433 rms 0.23 -> 0.23 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000075, number_of_ambiguous_matches=14 
25433 * matched (3rd iteration). Success!
  rotation [degrees] =   0.489
    25627 stars detected, 25433 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 18645, N_manually_selected_comparison_stars = 0
Using 18645 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 17157 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00024*X_pix +0.00016*Y_pix -0.97002
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 17157 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.63
 ERROR!!! Magnitude calibration failure. Dropping image. 
    187434 objects stored in memory (1000000 max.)
memory:  470636 kB used, 561468 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 342557 (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 26610 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 44649 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 21784 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 22269 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 39811 stars

done!  =)
TIMING select_aperture: 4 seconds
Computing lightcurve statistics...  Will not compute variability indexes for objects having <1 points in lightcurve
You may disable this by commenting out the line '#define DROP_LIGHTCURVES_WITH_SMALL_NUMBER_OF_POINTS_FROM_ALL_PLOTS' in src/vast_limits.h an re-compiling VaST with 'make'

Computing, please wait a bit
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 154485 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 Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits.cat to cache
SExtractor catalog cache: saved Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_vSTL
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits
Last  image: 2461260.90140125 08.08.2026 09:37:51.068 UTC
ERROR running VaST on the field Her-08-Q2b1x1 (less than 4 images processed)
exp_start= 12.06.2026 09:07:55.081  exp=   20.000  JD= 2461203.88061436  ap=  4.6  rotation=   0.000  *detected= 172280  *matched= 172280  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-07-55_20.00sec_4.90C_LIGHT_0224.fits
exp_start= 12.06.2026 09:08:42.385  exp=   20.000  JD= 2461203.88116186  ap=  4.6  rotation=  -0.002  *detected= 170277  *matched= 155123  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Her-08-Q2b1x1_2026-06-12_04-08-42_20.00sec_5.00C_LIGHT_0225.fits
exp_start= 08.08.2026 09:37:51.068  exp=   20.000  JD= 2461260.90140125  ap=  4.5  rotation=   0.483  *detected= 25150  *matched= 24971  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-37-51_20.00sec_-0.00C_LIGHT_0263.fits
exp_start= 08.08.2026 09:38:32.996  exp=   20.000  JD= 2461260.90188653  ap=  4.5  rotation=   0.489  *detected= 25627  *matched= 25433  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-08-Q2b1x1_044129_TTUQ2b1x1_816998_2LowTmO4/fd_Her-08-Q2b1x1_2026-08-08_04-38-32_20.00sec_0.00C_LIGHT_0264.fits
########### Completed Her-08-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: Sat Aug  8 04:43:24 CDT 2026
=======================================
TIMING SExtractor: 1 seconds
TIMING matching_and_photometry: 0 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: 4 seconds
    VAST_RUN_default.sex.telephoto_lens_vSTL: 19s (0.32 min)
FIELD_Her-08-Q2b1x1: 33s (0.55 min)
=======================================
TOTAL_RUNTIME: 50s (0.83 min)
Finished: Sat Aug  8 04:44:14 CDT 2026