FITS images used in this processing run:

Field Her-02-Q2b1x1 reference image: Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
Field Her-02-Q2b1x1 reference image: Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits
Field Her-02-Q2b1x1 second-epoch image: Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits
Field Her-02-Q2b1x1 second-epoch image: Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits

WARNING: VaST exited with code 1 on the field Her-02-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: 2461202.85845161 11.06.2026 08:36:00.219   /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
First image: 2461202.85845161 11.06.2026 08:36:00.219   /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
Last  image: 2461202.85896647 11.06.2026 08:36:44.703   /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.40
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: 2 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):  12317
Objects passed selection criteria:  12237
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: 13115
Average stars matched: 12692 (96.7747 %)
Memory usage VmPeak:   239008 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 04:55:59 CDT 2026
Host name: tau
***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################
WARNING: VaST exited with code 1 on the field Her-02-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: 2461202.85845161 11.06.2026 08:36:00.219   /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
First image: 2461202.85845161 11.06.2026 08:36:00.219   /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
Last  image: 2461202.85896647 11.06.2026 08:36:44.703   /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.06
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: 10 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):  76928
Objects passed selection criteria:  76527
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: 84373.5
Average stars matched: 80331.5 (95.2094 %)
Memory usage VmPeak:   301040 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 04:56:10 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-02-Q2b1x1
#######################################
########### Starting Her-02-Q2b1x1 ###########
Processing Her-02-Q2b1x1
server tau has sufficient free disk space available: 432405 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 432405 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.png' -> 'transient_report/Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits_preview.png'

Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits


renamed 'Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.png' -> 'transient_report/Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits_preview.png'

Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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= 390.4505
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 572.8580
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1583.6129
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 360.0213
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1602.4900
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 354.8309
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 4.05586
INFO:                  SECOND_EPOCH__SD_ratio= 0.015
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 =     23.1800003051758 / [degC] Focuser temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.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= '2026-08-08T04:49:05.3362399' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-08T09:49:05.3362399' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61260.4090895369 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-08T09:49:15.2376677' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61260.4092041319 / 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      =     269.997276164685 / [deg] RA of telescope" status=0
Record 32: "DEC     =       46.00008986824 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     22.2202777777778 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     311.423611111111 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.62888846671815 / 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-02'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '18 00 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+46 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "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 =     23.1800003051758 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     23.1800003051758 / [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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/d_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits :)

Spent 0.468893 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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/d_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                  0.0 / [degC] CCD temperature
FOCTEMP =     23.1299991607666 / [degC] Focuser temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits 
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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= '2026-08-08T04:50:19.3242595' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-08T09:50:19.3242595' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61260.4099458796 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-08T09:50:29.2245354' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =      61260.410060463 / 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      =     269.997276212801 / [deg] RA of telescope" status=0
Record 32: "DEC     =     46.0000898119265 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     22.0277777777778 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     311.526111111111 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.65039269228616 / 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-02'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '18 00 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+46 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "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 =     23.1299991607666 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     23.1299991607666 / [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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/d_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits :)

Spent 0.459456 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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/d_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
Previews of the CALIBRATED second-epoch images:


fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits



fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
  
Last  image: 2461260.90920528 08.08.2026 09:49:05.336 UTC
WARNING: VaST exited with code 1 on the field Her-02-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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr)...  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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits catalog from cache
SExtractor catalog cache: restored Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.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-02-Q2Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits
The above guess is ba11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits
sed 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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
The above guess is basExcluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
ed on the non-default gain value specified in default.sex by user
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.0,6.0,5.4,6.6,7.2,7.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.0,6.0,5.4,6.6,7.2,7.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_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: 2026-06-11T08:36:00.2195061
Setting observation time using DATE-OBS keyword: 2026-06-11T08:36:00.2195061

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-06-11T08:36:00.219
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
Exposure 20 sec, 11.06.2026 08:36:00.219 UTC = JD(UTC) 2461202.85845161 mid. exp.
The reference image star  9332.070    11.366 is rejected, see bad_region.lst
The reference image star  7621.028    11.693 is rejected, see bad_region.lst
The reference image star  8710.249     9.198 is rejected, see bad_region.lst
The reference image star  8300.237     7.831 is rejected, see bad_region.lst
The reference image star  8432.208     5.006 is rejected, see bad_region.lst
The reference image star  7933.328     5.097 is rejected, see bad_region.lst
The reference image star  7661.823     4.262 is rejected, see bad_region.lst
The reference image star  8888.720     1.691 is rejected, see bad_region.lst
The reference image star  7946.144    20.206 is rejected, see bad_region.lst
The reference image star  8288.952    16.901 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: 13067, (13066 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: 3190
 * rejected close to frame edge: 53
 * rejected as being too small (<1.6 pix): 0
 * rejected as being too large (>6.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 6
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.40
Detection limit from the magnitude-SNR relation= -7.4  (5.0 sigma detection)
The simple faintest star detection limit= -9.5
80 percent brightest stars detection limit= -10.3
Selected detection limit= -10.3
Final detection limit= -10.3 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.06.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 5
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
    13163 * detected, using  503/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.015650, number_of_ambiguous_matches=206 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=12328 inliers=12328 rms 0.35 -> 0.35 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.006761, number_of_ambiguous_matches=89 
12323 * matched, [CVPOLY iter 2: order=2 pairs=12323 inliers=12323 rms 0.21 -> 0.20 pix, max corner correction 0.3 pix] fraction_of_ambiguous_matches= 0.003495, number_of_ambiguous_matches=46 
12320 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=12320 inliers=12320 rms 0.14 -> 0.14 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.001747, number_of_ambiguous_matches=23 
12317 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.004
    13163 stars detected, 12317 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 11388, N_manually_selected_comparison_stars = 0
Using 11388 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 11388 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00001*X_pix -0.00001*Y_pix -0.00802
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 11387 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.39
    13913 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  204256 kB used, 239008 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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.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: 2026-08-08T09:49:05.3362399
Setting observation time using DATE-OBS keyword: 2026-08-08T09:49:05.3362399

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-08T09:49:05.336
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits
The star  7769.506    65.172 is rejected, see bad_region.lst
The star  8201.746   125.785 is rejected, see bad_region.lst
The star  7530.779   210.886 is rejected, see bad_region.lst
The star  8238.377   281.957 is rejected, see bad_region.lst
The star  7859.704   490.750 is rejected, see bad_region.lst
The star  9549.628   500.939 is rejected, see bad_region.lst
The star  7804.931   544.274 is rejected, see bad_region.lst
The star  9044.302   619.494 is rejected, see bad_region.lst
The star  8183.562   769.236 is rejected, see bad_region.lst
The star  7587.947   792.092 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 2323
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 30
 * rejected close to frame edge: 18
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>6.0 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
     2323 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000144, number_of_ambiguous_matches=2 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=2277 inliers=2277 rms 0.46 -> 0.34 pix, max corner correction 2.0 pix] fraction_of_ambiguous_matches= 0.000144, number_of_ambiguous_matches=2 
2276 * matched, [CVPOLY iter 2: order=3 pairs=2276 inliers=2276 rms 0.14 -> 0.13 pix, max corner correction 1.5 pix] fraction_of_ambiguous_matches= 0.000144, number_of_ambiguous_matches=2 
2276 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=2276 inliers=2276 rms 0.13 -> 0.13 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000072, number_of_ambiguous_matches=1 
2276 * matched (3rd iteration). Success!
  rotation [degrees] =   0.976
     2323 stars detected,  2276 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1854, N_manually_selected_comparison_stars = 0
Using 1854 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 1754 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00015*X_pix +0.00005*Y_pix -0.38729
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 1754 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.88
 ERROR!!! Magnitude calibration failure. Dropping image. 
    13913 objects stored in memory (1000000 max.)
memory:  203884 kB used, 239008 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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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: 2026-08-08T09:50:19.3242595
Setting observation time using DATE-OBS keyword: 2026-08-08T09:50:19.3242595

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-08T09:50:19.324
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
The star  7771.893    70.487 is rejected, see bad_region.lst
The star  8203.890   130.866 is rejected, see bad_region.lst
The star  7533.028   216.195 is rejected, see bad_region.lst
The star  8240.531   286.976 is rejected, see bad_region.lst
The star  7861.943   495.952 is rejected, see bad_region.lst
The star  9551.755   505.632 is rejected, see bad_region.lst
The star  7807.278   549.476 is rejected, see bad_region.lst
The star  9046.786   624.349 is rejected, see bad_region.lst
The star  7590.321   797.294 is rejected, see bad_region.lst
The star  8309.070   833.643 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 2082
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 23
 * rejected close to frame edge: 11
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>6.0 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
     2082 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000144, number_of_ambiguous_matches=2 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=2031 inliers=2031 rms 0.69 -> 0.36 pix, max corner correction 1.5 pix] fraction_of_ambiguous_matches= 0.000144, number_of_ambiguous_matches=2 
2030 * matched, [CVPOLY iter 2: order=3 pairs=2030 inliers=2030 rms 0.14 -> 0.13 pix, max corner correction 1.4 pix] fraction_of_ambiguous_matches= 0.000144, number_of_ambiguous_matches=2 
2030 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=2030 inliers=2030 rms 0.13 -> 0.13 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000072, number_of_ambiguous_matches=1 
2030 * matched (3rd iteration). Success!
  rotation [degrees] =   0.985
     2082 stars detected,  2030 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1631, N_manually_selected_comparison_stars = 0
Using 1631 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 1546 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00017*X_pix +0.00005*Y_pix -0.45203
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 1546 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.88
 ERROR!!! Magnitude calibration failure. Dropping image. 
    13913 objects stored in memory (1000000 max.)
memory:  203884 kB used, 239008 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 1 seconds
Done with measurements! =)

Total number of measurements 26230 (26230 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  2790 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  3590 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  1540 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  1503 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  2894 stars

done!  =)
TIMING select_aperture: 0 seconds
Computing lightcurve statistics...  Will not compute variability indexes for objects having <1 points in lightcurve
You may disable this by commenting out the line '#define DROP_LIGHTCURVES_WITH_SMALL_NUMBER_OF_POINTS_FROM_ALL_PLOTS' in src/vast_limits.h an re-compiling VaST with 'make'

Computing, please wait a bit
..........................................................................................................................
vast_lightcurve_statistics.log: 12237 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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits.cat to cache
SExtractor catalog cache: saved Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
Last  image: 2461260.90920528 08.08.2026 09:49:05.336 UTC
ERROR running VaST on the field Her-02-Q2b1x1 (less than 4 images processed)
exp_start= 11.06.2026 08:36:00.219  exp=   20.000  JD= 2461202.85845161  ap=  6.4  rotation=   0.000  *detected= 13067  *matched= 13067  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
exp_start= 11.06.2026 08:36:44.703  exp=   20.000  JD= 2461202.85896647  ap=  6.4  rotation=  -0.004  *detected= 13163  *matched= 12317  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits
exp_start= 08.08.2026 09:49:05.336  exp=   20.000  JD= 2461260.90920528  ap=  6.0  rotation=   0.976  *detected=  2323  *matched=  2276  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits
exp_start= 08.08.2026 09:50:19.324  exp=   20.000  JD= 2461260.91006162  ap=  6.0  rotation=   0.985  *detected=  2082  *matched=  2030  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
  
Last  image: 2461260.90920528 08.08.2026 09:49:05.336 UTC
WARNING: VaST exited with code 1 on the field Her-02-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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr)...  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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits catalog from cache
SExtractor catalog cache: restored Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits > image00003.cat.sex_log 2>&1
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.5,4.5,4.1,5.0,5.4,5.9 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.5,4.5,4.1,5.0,5.5,5.9 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits


Done with SExtractor!

TIMING SExtractor: 4 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_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: 2026-06-11T08:36:00.2195061
Setting observation time using DATE-OBS keyword: 2026-06-11T08:36:00.2195061

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-06-11T08:36:00.219
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
Exposure 20 sec, 11.06.2026 08:36:00.219 UTC = JD(UTC) 2461202.85845161 mid. exp.
The reference image star  8542.695    37.315 is rejected, see bad_region.lst
The reference image star  7946.143    20.206 is rejected, see bad_region.lst
The reference image star  8288.925    16.902 is rejected, see bad_region.lst
The reference image star  9050.730    15.103 is rejected, see bad_region.lst
The reference image star  8370.660    14.669 is rejected, see bad_region.lst
The reference image star  8025.325    14.550 is rejected, see bad_region.lst
The reference image star  9332.050    11.368 is rejected, see bad_region.lst
The reference image star  7621.013    11.694 is rejected, see bad_region.lst
The reference image star  8323.247    10.516 is rejected, see bad_region.lst
The reference image star  8710.248     9.199 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: 83735, (83735 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 55
 * rejected inside rectangles defined in bad_region.lst: 14090
 * rejected close to frame edge: 380
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.8 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): 195
 * 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: -7.06
Detection limit from the magnitude-SNR relation= -7.1  (5.0 sigma detection)
The simple faintest star detection limit= -6.4
80 percent brightest stars detection limit= -7.5
Selected detection limit= -7.5
Final detection limit= -7.5 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.04.8 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): 249
 * 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'.
    85012 * detected, using  507/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.018868, number_of_ambiguous_matches=1604 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=77010 inliers=77010 rms 0.37 -> 0.37 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.018868, number_of_ambiguous_matches=1604 
77012 * matched, [CVPOLY iter 2: order=1 pairs=77012 inliers=77012 rms 0.37 -> 0.37 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.018868, number_of_ambiguous_matches=1604 
77012 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=77012 inliers=77012 rms 0.37 -> 0.37 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.009352, number_of_ambiguous_matches=795 
76928 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.004
    85012 stars detected, 76928 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 69628, N_manually_selected_comparison_stars = 0
Using 69628 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 69624 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00001*X_pix -0.00001*Y_pix -0.00621
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 65600 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.06
    91819 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  262992 kB used, 301040 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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.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: 2026-08-08T09:49:05.3362399
Setting observation time using DATE-OBS keyword: 2026-08-08T09:49:05.3362399

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-08T09:49:05.336
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits
The star  8980.898    59.178 is rejected, see bad_region.lst
The star  7769.507    65.172 is rejected, see bad_region.lst
The star  8979.105    60.974 is rejected, see bad_region.lst
The star  7604.225    64.986 is rejected, see bad_region.lst
The star  7580.988    84.677 is rejected, see bad_region.lst
The star  8600.294    86.407 is rejected, see bad_region.lst
The star  8645.125   107.619 is rejected, see bad_region.lst
The star  8201.747   125.786 is rejected, see bad_region.lst
The star  7530.778   210.887 is rejected, see bad_region.lst
The star  7919.275   216.363 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 20174
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 3
 * rejected inside rectangles defined in bad_region.lst: 205
 * rejected close to frame edge: 109
 * 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): 40
 * 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'.
    20174 * detected, using  120/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000261, number_of_ambiguous_matches=24 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=19737 inliers=19737 rms 0.67 -> 0.23 pix, max corner correction 2.8 pix] fraction_of_ambiguous_matches= 0.000283, number_of_ambiguous_matches=26 
19736 * matched, [CVPOLY iter 2: order=1 pairs=19736 inliers=19736 rms 0.23 -> 0.23 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000283, number_of_ambiguous_matches=26 
19736 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=19736 inliers=19736 rms 0.23 -> 0.23 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000174, number_of_ambiguous_matches=16 
19731 * matched (3rd iteration). Success!
  rotation [degrees] =   0.976
    20174 stars detected, 19731 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 16594, N_manually_selected_comparison_stars = 0
Using 16594 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 15098 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00017*X_pix +0.00005*Y_pix -0.49142
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 15098 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.55
 ERROR!!! Magnitude calibration failure. Dropping image. 
    91819 objects stored in memory (1000000 max.)
memory:  277432 kB used, 301040 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-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.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: 2026-08-08T09:50:19.3242595
Setting observation time using DATE-OBS keyword: 2026-08-08T09:50:19.3242595

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-08T09:50:19.324
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
The star  7771.894    70.487 is rejected, see bad_region.lst
The star  8982.879    64.112 is rejected, see bad_region.lst
The star  8981.539    65.347 is rejected, see bad_region.lst
The star  7607.472    70.565 is rejected, see bad_region.lst
The star  7583.231    89.882 is rejected, see bad_region.lst
The star  8203.890   130.866 is rejected, see bad_region.lst
The star  7533.025   216.196 is rejected, see bad_region.lst
The star  7920.723   221.040 is rejected, see bad_region.lst
The star  9343.159   218.001 is rejected, see bad_region.lst
The star  7900.906   237.768 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 18799
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 3
 * rejected inside rectangles defined in bad_region.lst: 176
 * rejected close to frame edge: 106
 * 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): 31
 * 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'.
    18799 * detected, using  112/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000327, number_of_ambiguous_matches=30 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=18321 inliers=18321 rms 0.64 -> 0.23 pix, max corner correction 1.9 pix] fraction_of_ambiguous_matches= 0.000338, number_of_ambiguous_matches=31 
18320 * matched, [CVPOLY iter 2: order=1 pairs=18320 inliers=18320 rms 0.23 -> 0.23 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000338, number_of_ambiguous_matches=31 
18320 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=18320 inliers=18320 rms 0.23 -> 0.23 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000272, number_of_ambiguous_matches=25 
18314 * matched (3rd iteration). Success!
  rotation [degrees] =   0.985
    18799 stars detected, 18314 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 15305, N_manually_selected_comparison_stars = 0
Using 15305 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 13713 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00019*X_pix +0.00005*Y_pix -0.50589
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 13713 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.56
 ERROR!!! Magnitude calibration failure. Dropping image. 
    91819 objects stored in memory (1000000 max.)
memory:  277432 kB used, 301040 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 1 seconds
Done with measurements! =)

Total number of measurements 168747 (168747 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 1 seconds
The lightcurve files have been written, freeing up more memory...
Creating vast_image_details.log ... 

Writing summary file: vast_summary.log ...  OK
Selecting the best aperture for each source
Aperture with index 0 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for 11817 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 22344 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 12667 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 10328 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 19772 stars

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

Computing, please wait a bit
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 76527 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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits.cat to cache
SExtractor catalog cache: saved Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.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-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
Last  image: 2461260.90920528 08.08.2026 09:49:05.336 UTC
ERROR running VaST on the field Her-02-Q2b1x1 (less than 4 images processed)
exp_start= 11.06.2026 08:36:00.219  exp=   20.000  JD= 2461202.85845161  ap=  4.8  rotation=   0.000  *detected= 83735  *matched= 83735  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-00_20.00sec_5.00C_LIGHT_0264.fits
exp_start= 11.06.2026 08:36:44.703  exp=   20.000  JD= 2461202.85896647  ap=  4.8  rotation=  -0.004  *detected= 85012  *matched= 76928  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Her-02-Q2b1x1_2026-06-11_03-36-44_20.00sec_4.90C_LIGHT_0265.fits
exp_start= 08.08.2026 09:49:05.336  exp=   20.000  JD= 2461260.90920528  ap=  4.5  rotation=   0.976  *detected= 20174  *matched= 19731  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-49-05_20.00sec_-0.00C_LIGHT_0275.fits
exp_start= 08.08.2026 09:50:19.324  exp=   20.000  JD= 2461260.91006162  ap=  4.5  rotation=   0.985  *detected= 18799  *matched= 18314  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/fd_Her-02-Q2b1x1_2026-08-08_04-50-19_20.00sec_0.00C_LIGHT_0276.fits
Source monitoring: measuring positions from /data_ssd/NMW-TexasTech/workdir/img_2026-08-08_CI_Her-02-Q2b1x1_045329_TTUQ2b1x1_898876_0bym0MJr/monitoring_positions.txt
Source monitoring: cannot map PHOTOMETRIC_CALIBRATION= to a calibration method - skipping
########### Completed Her-02-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 04:55:27 CDT 2026
=======================================
TIMING SExtractor: 1 seconds
TIMING matching_and_photometry: 1 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 0 seconds
    VAST_RUN_default.sex.telephoto_lens_onlybrightstars_v1: 3s (0.05 min)
TIMING SExtractor: 4 seconds
TIMING matching_and_photometry: 1 seconds
TIMING lightcurve_write: 1 seconds
TIMING select_aperture: 2 seconds
    VAST_RUN_default.sex.telephoto_lens_vSTL: 11s (0.18 min)
FIELD_Her-02-Q2b1x1: 25s (0.42 min)
=======================================
TOTAL_RUNTIME: 43s (0.72 min)
Finished: Sat Aug  8 04:56:10 CDT 2026