FITS images used in this processing run:

Field Cam-08-Q1b1x1 reference image: Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
Field Cam-08-Q1b1x1 reference image: Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits
Field Cam-08-Q1b1x1 second-epoch image: Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
Field Cam-08-Q1b1x1 second-epoch image: Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits

WARNING: VaST exited with code 1 on the field Cam-08-Q1b1x1 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: 2461049.58702274 09.01.2026 02:05:08.765   /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
First image: 2461049.58702274 09.01.2026 02:05:08.765   /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
Last  image: 2461049.58758767 09.01.2026 02:05:57.575   /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.57
Magnitude-Size filter: Disabled
For each source choose aperture with the smallest scatter: YES
Photometric errors rescaling: NO
Number of identified bad images: 0
Number of SysRem iterations: 0
User-specified moving object: none
Computation time: 3 seconds
Number of parallel threads: 3
SExtractor parameter file: default.sex
Some important SExtractor parameters:
DETECT_MINAREA  10.0             # minimum number of pixels above threshold
DETECT_THRESH   10.0             #  or , in mag.arcsec-2
ANALYSIS_THRESH 10.0             #  or , in mag.arcsec-2
SATUR_LEVEL     55000.0         # level (in ADUs) at which arises saturation
GAIN            0.37            # detector gain in e-/ADU
VAST_SKIP_INDEX_VS_MAG is set - skipping the lib/index_vs_mag variability-index fitting
Total objects detected (at least 2 times):  19441
Objects passed selection criteria:  19234
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: 20713
Average stars matched: 20125 (97.1612 %)
Memory usage VmPeak:   244552 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Wed Jul 29 18:03:05 CDT 2026
VaST build number  1.0rc89-187-gf9db235a
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-07-29)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Tue Aug  4 00:18:32 CDT 2026
Host name: tau
***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################
WARNING: VaST exited with code 1 on the field Cam-08-Q1b1x1 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: 2461049.58702274 09.01.2026 02:05:08.765   /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
First image: 2461049.58702274 09.01.2026 02:05:08.765   /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
Last  image: 2461049.58758767 09.01.2026 02:05:57.575   /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.26
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: 17 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):  139990
Objects passed selection criteria:  139361
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: 154100
Average stars matched: 147034 (95.4144 %)
Memory usage VmPeak:   541792 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Wed Jul 29 18:03:05 CDT 2026
VaST build number  1.0rc89-187-gf9db235a
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-07-29)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Tue Aug  4 00:18:51 CDT 2026
Host name: tau
***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################

######## Processing parameters ########
AAVSO_COMMENT_STRING= NMW-TexasTech Camera-1 135mm f/2.2 telephoto lens + QHY600M CMOS
ASTCHECK_ASTEROID_SEARCH_RADIUS_ARCSEC= 
BAD_REGION_FILE= /var/www/nmw_calibration/TTUQ1b1x1/TTUQ1_bad_region.lst
CAMERA_SETTINGS= TTUQ1b1x1
CHECK_POINTING_ACCURACY= yes
DARK_FRAMES_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ1b1x1/darks
EXCLUSION_LIST= ../exclusion_list_TTUQ1.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/TTUQ1b1x1/flats
FRAME_EDGE_OFFSET_PIX= 100
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: 
Cam-08-Q1b1x1
#######################################
########### Starting Cam-08-Q1b1x1 ###########
Processing Cam-08-Q1b1x1
server tau has sufficient free disk space available: 314193 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 314193 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.png' -> 'transient_report/Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits_preview.png'

Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits


renamed 'Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.png' -> 'transient_report/Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits_preview.png'

Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.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= 564.9269
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 758.6000
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 2715.9944
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 668.3008
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 2740.5983
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 674.9375
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 4.80769
INFO:                  SECOND_EPOCH__SD_ratio= 0.010
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/TTUQ1b1x1/darks FLAT_FIELD_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ1b1x1/flats
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                  0.0 / [degC] CCD temperature
FOCTEMP =     29.2999992370605 / [degC] Focuser temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits 
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.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= '2026-08-03T23:58:27.2600819' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-04T04:58:27.2600819' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61256.2072599535 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-04T04:58:37.1669201' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61256.2073746063 / 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-33d3d743814b8b447' / 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-TTU1'       / 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      =     51.4249177386086 / [deg] RA of telescope" status=0
Record 32: "DEC     =     62.0001441356625 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =              15.0475 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     22.9427777777778 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.79913603984234 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'West'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1015.0 / [m] Observation site elevation" status=0
Record 38: "SITELAT =     33.7480555555556 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=    -101.958333333333 / [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  = 'Cam-08'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '03 25 43'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+62 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  =                29494 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                29494 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     29.2999992370605 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     29.2999992370605 / [degC] Focuser temperature" status=0
Record 55: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 56: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 57: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 58: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 59: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 60: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 61: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 62: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 63: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 64: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 65: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 66: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 67: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-07-30.fit
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-07-30.fit
Reading dark frame /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-07-30.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/d_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits :)

Spent 0.476951 seconds 
renamed 'mdark_TTUQ1b1x1_0C_20s_2026-07-30.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-07-30.fit from directory /var/www/nmw_calibration/TTUQ1b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/d_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-07-30.fit 9576 6388  16 bitpix
Avarage count on flat field image: 26658.571233
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits :)


No overscan detected - all values seem high! (left_median=17308.5, right_median=19900.5)
renamed 'mff_TTUQ1b1x1_2026-07-30.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     29.2999992370605 / [degC] Focuser temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.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= '2026-08-03T23:59:10.9580361' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-04T04:59:10.9580361' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61256.2077657175 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-04T04:59:20.8626640' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =      61256.207880347 / 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-33d3d743814b8b447' / 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-TTU1'       / 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      =     51.4249176249381 / [deg] RA of telescope" status=0
Record 32: "DEC     =     62.0001441346836 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     15.1072222222222 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     23.0072222222222 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.78489750977261 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'West'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1015.0 / [m] Observation site elevation" status=0
Record 38: "SITELAT =     33.7480555555556 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=    -101.958333333333 / [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  = 'Cam-08'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '03 25 43'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+62 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  =                29494 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                29494 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     29.2999992370605 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     29.2999992370605 / [degC] Focuser temperature" status=0
Record 55: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 56: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 57: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 58: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 59: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 60: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 61: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 62: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 63: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 64: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 65: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 66: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 67: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-07-30.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-07-30.fit
Reading dark frame /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-07-30.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/d_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits :)

Spent 0.465154 seconds 
renamed 'mdark_TTUQ1b1x1_0C_20s_2026-07-30.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-07-30.fit from directory /var/www/nmw_calibration/TTUQ1b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/d_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-07-30.fit 9576 6388  16 bitpix
Avarage count on flat field image: 26658.571233
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits :)


No overscan detected - all values seem high! (left_median=17308.5, right_median=19900.5)
renamed 'mff_TTUQ1b1x1_2026-07-30.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
Dark frame used to calibrate the second-epoch images:



Flat field used to calibrate the second-epoch images:



after the calibration attempt:
SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
Previews of the CALIBRATED second-epoch images:


fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits



fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits




Updating neverexclude_list.txt
'/var/www/nmw_calibration/neverexclude_list.txt' -> './neverexclude_list.txt'
Choosing bad regions list
'/var/www/nmw_calibration/TTUQ1b1x1/TTUQ1_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/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
  
Last  image: 2461256.70737569 04.08.2026 04:58:27.260 UTC
WARNING: VaST exited with code 1 on the field Cam-08-Q1b1x1 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_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe)...  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/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.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:   190.0  1039.0   192.0  1041.0  (defined in bad_region.lst)
Excluding image region:   226.0  1548.0   228.0  1550.0  (defined in bad_region.lst)
Excluding image region:   351.0  1875.0   353.0  1877.0  (defined in bad_region.lst)
Excluding image region:   501.0  5912.0   503.0  5914.0  (defined in bad_region.lst)
Excluding image region:   638.0  5545.0   640.0  5547.0  (defined in bad_region.lst)
Excluding image region:   724.0  2731.0   726.0  2733.0  (defined in bad_region.lst)
Excluding image region:   883.0  1376.0   885.0  1378.0  (defined in bad_region.lst)
Excluding image region:   901.0  3972.0   903.0  3974.0  (defined in bad_region.lst)
Excluding image region:  1151.0   918.0  1153.0   920.0  (defined in bad_region.lst)
Excluding image region:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 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 Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits catalog from cache
SExtractor catalog cache: restored Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.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/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
Excluding image region:   190.0  1039.0   192.0  1041.0  (defined in bad_region.lst)
Excluding image region:   226.0  1548.0   228.0  1550.0  (defined in bad_region.lst)
Excluding image region:   351.0  1875.0   353.0  1877.0  (defined in bad_region.lst)
Excluding image region:   501.0  5912.0   503.0  5914.0  (defined in bad_region.lst)
Excluding image region:   638.0  5545.0   640.0  5547.0  (defined in bad_region.lst)
Excluding image region:   724.0  2731.0   726.0  2733.0  (defined in bad_region.lst)
Excluding image region:   883.0  1376.0   885.0  1378.0  (defined in bad_region.lst)
Excluding image region:   901.0  3972.0   903.0  3974.0  (defined in bad_region.lst)
Excluding image region:  1151.0   918.0  1153.0   920.0  (defined in bad_region.lst)
Excluding image region:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits > image00003.cat.sex_log 2>&1
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
The above guess is based on the non-default gain value specified in default.sex by user
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
Excluding image region:   190.0  1039.0   192.0  1041.0  (defined in bad_region.lst)
Excluding image region:   226.0  1548.0   228.0  1550.0  (defined in bad_region.lst)
Excluding image region:   351.0  1875.0   353.0  1877.0  (defined in bad_region.lst)
Excluding image region:   501.0  5912.0   503.0  5914.0  (defined in bad_region.lst)
Excluding image region:   638.0  5545.0   640.0  5547.0  (defined in bad_region.lst)
Excluding image region:   724.0  2731.0   726.0  2733.0  (defined in bad_region.lst)
Excluding image region:   883.0  1376.0   885.0  1378.0  (defined in bad_region.lst)
Excluding image region:   901.0  3972.0   903.0  3974.0  (defined in bad_region.lst)
Excluding image region:  1151.0   918.0  1153.0   920.0  (defined in bad_region.lst)
Excluding image region:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 7.5,7.5,6.8,8.3,9.1,9.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 7.5,7.5,6.8,8.3,9.1,9.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.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/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-01-09T02:05:08.7659013
Setting observation time using DATE-OBS keyword: 2026-01-09T02:05:08.7659013

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-01-09T02:05:08.765
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
Exposure 20 sec, 09.01.2026 02:05:08.765 UTC = JD(UTC) 2461049.58702274 mid. exp.
The reference image star  9386.850  5657.742 is rejected, see bad_region.lst
The reference image star  1543.480  5511.704 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 20809, (20809 good for image matching)
 * rejected as having no flux measurement: 1
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 2
 * rejected close to frame edge: 103
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>5.9 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 15
 * 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: -7.57
Detection limit from the magnitude-SNR relation= -7.6  (5.0 sigma detection)
The simple faintest star detection limit= -9.7
80 percent brightest stars detection limit= -10.5
Selected detection limit= -10.5
Final detection limit= -10.5 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.05.9 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
    20617 * detected, using  495/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.012206, number_of_ambiguous_matches=254 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=19453 inliers=19453 rms 0.36 -> 0.35 pix, max corner correction 0.2 pix] fraction_of_ambiguous_matches= 0.006872, number_of_ambiguous_matches=143 
19446 * matched, [CVPOLY iter 2: order=1 pairs=19446 inliers=19446 rms 0.18 -> 0.18 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.004085, number_of_ambiguous_matches=85 
19443 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=19443 inliers=19443 rms 0.13 -> 0.13 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.001730, number_of_ambiguous_matches=36 
19441 * matched (3rd iteration). Success!
  rotation [degrees] =   0.008
    20617 stars detected, 19441 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 17252, N_manually_selected_comparison_stars = 0
Using 17252 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 17252 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix -0.00000*Y_pix +0.00045
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 17251 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.57
    21985 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  207784 kB used, 244552 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.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: 2026-08-04T04:58:27.2600819
Setting observation time using DATE-OBS keyword: 2026-08-04T04:58:27.2600819

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-04T04:58:27.260
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
SExtractor output filtering results:
 * passed selection: 3898
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 0
 * rejected close to frame edge: 32
 * rejected as being too small (<1.9 pix): 0
 * rejected as being too large (>7.5 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): 1
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     3898 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=3623 inliers=3623 rms 2.20 -> 0.39 pix, max corner correction 19.5 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
3627 * matched, [CVPOLY iter 2: order=2 pairs=3627 inliers=3627 rms 0.23 -> 0.23 pix, max corner correction 0.5 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
3627 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=3627 inliers=3627 rms 0.23 -> 0.23 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
3627 * matched (3rd iteration). Success!
  rotation [degrees] = -10.010
     3898 stars detected,  3627 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 2609, N_manually_selected_comparison_stars = 0
Using 2609 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 2511 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00012*X_pix -0.00010*Y_pix -0.00778
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 2511 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.52
 ERROR!!! Magnitude calibration failure. Dropping image. 
    21985 objects stored in memory (1000000 max.)
memory:  238724 kB used, 244552 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.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: 2026-08-04T04:59:10.9580361
Setting observation time using DATE-OBS keyword: 2026-08-04T04:59:10.9580361

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-04T04:59:10.958
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
The star  1200.846  1169.482 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 3920
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 1
 * rejected close to frame edge: 29
 * rejected as being too small (<1.9 pix): 0
 * rejected as being too large (>7.5 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): 1
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     3920 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000045, number_of_ambiguous_matches=1 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=3644 inliers=3644 rms 2.18 -> 0.45 pix, max corner correction 19.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
3649 * matched, [CVPOLY iter 2: order=2 pairs=3649 inliers=3649 rms 0.24 -> 0.23 pix, max corner correction 0.7 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
3649 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=3649 inliers=3649 rms 0.23 -> 0.23 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
3649 * matched (3rd iteration). Success!
  rotation [degrees] = -10.008
     3920 stars detected,  3649 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 2633, N_manually_selected_comparison_stars = 0
Using 2633 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 2542 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00012*X_pix -0.00010*Y_pix -0.01709
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 2542 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.52
 ERROR!!! Magnitude calibration failure. Dropping image. 
    21985 objects stored in memory (1000000 max.)
memory:  207132 kB used, 244552 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 41426 (41426 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  3548 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  5484 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  2787 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  2607 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  5015 stars

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

Computing, please wait a bit
................................................................................................................................................................................................
vast_lightcurve_statistics.log: 19234 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 Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits.cat to cache
SExtractor catalog cache: saved Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.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/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
Last  image: 2461256.70737569 04.08.2026 04:58:27.260 UTC
ERROR running VaST on the field Cam-08-Q1b1x1 (less than 4 images processed)
exp_start= 09.01.2026 02:05:08.765  exp=   20.000  JD= 2461049.58702274  ap=  5.9  rotation=   0.000  *detected= 20809  *matched= 20809  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
exp_start= 09.01.2026 02:05:57.575  exp=   20.000  JD= 2461049.58758767  ap=  5.9  rotation=   0.008  *detected= 20617  *matched= 19441  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits
exp_start= 04.08.2026 04:58:27.260  exp=   20.000  JD= 2461256.70737569  ap=  7.5  rotation= -10.010  *detected=  3898  *matched=  3627  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
exp_start= 04.08.2026 04:59:10.958  exp=   20.000  JD= 2461256.70788146  ap=  7.5  rotation= -10.008  *detected=  3920  *matched=  3649  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.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/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
  
Last  image: 2461256.70737569 04.08.2026 04:58:27.260 UTC
WARNING: VaST exited with code 1 on the field Cam-08-Q1b1x1 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_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe)...  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/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.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:   190.0  1039.0   192.0  1041.0  (defined in bad_region.lst)
Excluding image region:   226.0  1548.0   228.0  1550.0  (defined in bad_region.lst)
Excluding image region:   351.0  1875.0   353.0  1877.0  (defined in bad_region.lst)
Excluding image region:   501.0  5912.0   503.0  5914.0  (defined in bad_region.lst)
Excluding image region:   638.0  5545.0   640.0  5547.0  (defined in bad_region.lst)
Excluding image region:   724.0  2731.0   726.0  2733.0  (defined in bad_region.lst)
Excluding image region:   883.0  1376.0   885.0  1378.0  (defined in bad_region.lst)
Excluding image region:   901.0  3972.0   903.0  3974.0  (defined in bad_region.lst)
Excluding image region:  1151.0   918.0  1153.0   920.0  (defined in bad_region.lst)
Excluding image region:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 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 Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits catalog from cache
SExtractor catalog cache: restored Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.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/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
Excluding image region:   190.0  1039.0   192.0  1041.0  (defined in bad_region.lst)
Excluding image region:   226.0  1548.0   228.0  1550.0  (defined in bad_region.lst)
Excluding image region:   351.0  1875.0   353.0  1877.0  (defined in bad_region.lst)
Excluding image region:   501.0  5912.0   503.0  5914.0  (defined in bad_region.lst)
Excluding image region:   638.0  5545.0   640.0  5547.0  (defined in bad_region.lst)
Excluding image region:   724.0  2731.0   726.0  2733.0  (defined in bad_region.lst)
Excluding image region:   883.0  1376.0   885.0  1378.0  (defined in bad_region.lst)
Excluding image region:   901.0  3972.0   903.0  3974.0  (defined in bad_region.lst)
Excluding image region:  1151.0   918.0  1153.0   920.0  (defined in bad_region.lst)
Excluding image region:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits > image00003.cat.sex_log 2>&1The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1
b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
The above guess is based on the non-default gain value specified in default.sex by user
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
Excluding image region:   190.0  1039.0   192.0  1041.0  (defined in bad_region.lst)
Excluding image region:   226.0  1548.0   228.0  1550.0  (defined in bad_region.lst)
Excluding image region:   351.0  1875.0   353.0  1877.0  (defined in bad_region.lst)
Excluding image region:   501.0  5912.0   503.0  5914.0  (defined in bad_region.lst)
Excluding image region:   638.0  5545.0   640.0  5547.0  (defined in bad_region.lst)
Excluding image region:   724.0  2731.0   726.0  2733.0  (defined in bad_region.lst)
Excluding image region:   883.0  1376.0   885.0  1378.0  (defined in bad_region.lst)
Excluding image region:   901.0  3972.0   903.0  3974.0  (defined in bad_region.lst)
Excluding image region:  1151.0   918.0  1153.0   920.0  (defined in bad_region.lst)
Excluding image region:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 5.9,5.9,5.3,6.5,7.1,7.7 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 5.9,5.9,5.3,6.5,7.1,7.7 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits


Done with SExtractor!

TIMING SExtractor: 6 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/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-01-09T02:05:08.7659013
Setting observation time using DATE-OBS keyword: 2026-01-09T02:05:08.7659013

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-01-09T02:05:08.765
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
Exposure 20 sec, 09.01.2026 02:05:08.765 UTC = JD(UTC) 2461049.58702274 mid. exp.
The reference image star  3616.269  1438.186 is rejected, see bad_region.lst
The reference image star   502.127  5911.988 is rejected, see bad_region.lst
The reference image star  1543.483  5511.701 is rejected, see bad_region.lst
The reference image star  2318.005  4332.000 is rejected, see bad_region.lst
The reference image star  2173.005  4208.586 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 154078, (154078 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 28
 * rejected inside rectangles defined in bad_region.lst: 5
 * rejected close to frame edge: 796
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 57
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.26
Detection limit from the magnitude-SNR relation= -7.3  (5.0 sigma detection)
The simple faintest star detection limit= -6.5
80 percent brightest stars detection limit= -7.8
Selected detection limit= -7.8
Final detection limit= -7.8 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.04.4 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): 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'.
    154123 * detected, using  500/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.014618, number_of_ambiguous_matches=2253 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=139986 inliers=139986 rms 0.29 -> 0.29 pix, max corner correction 0.2 pix] fraction_of_ambiguous_matches= 0.014657, number_of_ambiguous_matches=2259 
139990 * matched, [CVPOLY iter 2: order=1 pairs=139990 inliers=139990 rms 0.29 -> 0.29 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.014657, number_of_ambiguous_matches=2259 
139990 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=139990 inliers=139990 rms 0.29 -> 0.29 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.014657, number_of_ambiguous_matches=2259 
139990 * matched (3rd iteration). Success!
  rotation [degrees] =   0.008
    154123 stars detected, 139990 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 121117, N_manually_selected_comparison_stars = 0
Using 121117 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 121107 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix -0.00000*Y_pix -0.00041
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 116040 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.26
    168211 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  328792 kB used, 355204 kB peak, 65263848 kB available RAM
Total number of measurements 308201 (308201 measurements stored in RAM)
sorting the measurements cached in memory,
writing lightcurve (outNNNNN.dat) files...
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.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: 2026-08-04T04:58:27.2600819
Setting observation time using DATE-OBS keyword: 2026-08-04T04:58:27.2600819

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-04T04:58:27.260
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
The star  9337.001  3590.999 is rejected, see bad_region.lst
The star  2173.945  3865.810 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 24230
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 1
 * rejected inside rectangles defined in bad_region.lst: 2
 * rejected close to frame edge: 115
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>5.9 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 71
 * 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'.
    24230 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000184, number_of_ambiguous_matches=31 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=20402 inliers=20402 rms 1.52 -> 0.82 pix, max corner correction 7.1 pix] fraction_of_ambiguous_matches= 0.000113, number_of_ambiguous_matches=19 
21487 * matched, [CVPOLY iter 2: order=2 pairs=21487 inliers=21487 rms 1.01 -> 0.80 pix, max corner correction 6.0 pix] fraction_of_ambiguous_matches= 0.000071, number_of_ambiguous_matches=12 
21931 * matched (2nd iteration). [CVPOLY iter 3: order=3 pairs=21931 inliers=21931 rms 0.90 -> 0.70 pix, max corner correction 12.5 pix] fraction_of_ambiguous_matches= 0.000077, number_of_ambiguous_matches=13 
22336 * matched (3rd iteration). Success!
  rotation [degrees] = -10.063
    24230 stars detected, 22336 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 16871, N_manually_selected_comparison_stars = 0
Using 16871 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 15949 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00012*X_pix -0.00013*Y_pix +0.06365
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 15949 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.26
 ERROR!!! Magnitude calibration failure. Dropping image. 
    168211 objects stored in memory (1000000 max.)
memory:  458560 kB used, 541792 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.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: 2026-08-04T04:59:10.9580361
Setting observation time using DATE-OBS keyword: 2026-08-04T04:59:10.9580361

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-04T04:59:10.958
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
The star  1200.846  1169.482 is rejected, see bad_region.lst
READING SEXTRACTOR CAT: 5070  2539.628 1897.900  (1.598000)  s=0 v=     0
The star  9336.999  3591.000 is rejected, see bad_region.lst
The star   637.304  5546.543 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 24512
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 2
 * rejected inside rectangles defined in bad_region.lst: 3
 * rejected close to frame edge: 115
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>5.9 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
    24512 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000196, number_of_ambiguous_matches=33 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=19588 inliers=19588 rms 1.80 -> 1.00 pix, max corner correction 8.9 pix] fraction_of_ambiguous_matches= 0.000119, number_of_ambiguous_matches=20 
21072 * matched, [CVPOLY iter 2: order=2 pairs=21072 inliers=21072 rms 1.17 -> 0.89 pix, max corner correction 6.5 pix] fraction_of_ambiguous_matches= 0.000113, number_of_ambiguous_matches=19 
21743 * matched (2nd iteration). [CVPOLY iter 3: order=2 pairs=21743 inliers=21743 rms 1.01 -> 0.81 pix, max corner correction 6.0 pix] fraction_of_ambiguous_matches= 0.000101, number_of_ambiguous_matches=17 
22155 * matched (3rd iteration). Success!
  rotation [degrees] = -10.060
    24512 stars detected, 22155 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 16757, N_manually_selected_comparison_stars = 0
Using 16757 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 16040 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00013*X_pix -0.00013*Y_pix +0.06307
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 16040 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.27
 ERROR!!! Magnitude calibration failure. Dropping image. 
    168211 objects stored in memory (1000000 max.)
memory:  458560 kB used, 541792 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 5 seconds
Done with measurements! =)

Total number of measurements 308201 (0 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 0 seconds
The lightcurve files have been written, freeing up more memory...
Creating vast_image_details.log ... 

Writing summary file: vast_summary.log ...  OK
Selecting the best aperture for each source
Aperture with index 0 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for 27934 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 39530 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 19331 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 18067 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 35128 stars

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

Computing, please wait a bit
.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 139361 objects, the longest string is 385 bytes.
Allocating memory for resorting the file.



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



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

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

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

Low percentage of matched images - we'll declare this an unsuccessful VaST run (exit code 1)
_____________________
SExtractor catalog cache: saved Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits.cat to cache
SExtractor catalog cache: saved Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_vSTL
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
Last  image: 2461256.70737569 04.08.2026 04:58:27.260 UTC
ERROR running VaST on the field Cam-08-Q1b1x1 (less than 4 images processed)
exp_start= 09.01.2026 02:05:08.765  exp=   20.000  JD= 2461049.58702274  ap=  4.4  rotation=   0.000  *detected= 154078  *matched= 154078  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-08_20.00sec_-14.90C_LIGHT_0026.fits
exp_start= 09.01.2026 02:05:57.575  exp=   20.000  JD= 2461049.58758767  ap=  4.4  rotation=   0.008  *detected= 154123  *matched= 139990  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cam-08-Q1b1x1_2026-01-08_20-05-57_20.00sec_-15.00C_LIGHT_0027.fits
exp_start= 04.08.2026 04:58:27.260  exp=   20.000  JD= 2461256.70737569  ap=  5.9  rotation= -10.063  *detected= 24230  *matched= 22336  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-58-27_20.00sec_0.00C_LIGHTs_0152.fits
exp_start= 04.08.2026 04:59:10.958  exp=   20.000  JD= 2461256.70788146  ap=  5.9  rotation= -10.060  *detected= 24512  *matched= 22155  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-04_CI_Cam-08-Q1b1x1_001513_TTUQ1b1x1_976475_ivyDxCYe/fd_Cam-08-Q1b1x1_2026-08-03_23-59-10_20.00sec_-0.00C_LIGHTs_0153.fits
########### Completed Cam-08-Q1b1x1 ###########
The analysis was running at tau
We are allowed to update the exclusion list at tau host
Found ../exclusion_list_TTUQ1.txt
#### The exclusion list before filtering-out asteroids, bad pixels and adding Gaia sources ####
###################################################################################
renamed 'exclusion_list_index_html.txt_noasteroids' -> 'exclusion_list_index_html.txt'
renamed 'exclusion_list_index_html.txt_nohotpixels' -> 'exclusion_list_index_html.txt'
# Count candidates with no identification (that also don't look like hot pix)
Found 0 unidentified candidates (excluding asteroids, hot pixels and known variable stars).
###################################################################################
0 candidates found (excluding asteroids and hot pixels)
This does not look like a test run
###################################################################################
exclusion_list_gaiadr2.txt NOT FOUND
exclusion_list_apass.txt NOT FOUND
IS_THIS_TEST_RUN=NO  ALLOW_EXCLUSION_LIST_UPDATE= YES
#### Nothing to add to the exclusion list ####
The observatory MPC code is V36
############################################################
ls: cannot access 'planets.txt': No such file or directory
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT):
ls: cannot access 'moons.txt': No such file or directory
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT):
ls: cannot access 'spacecraft.txt': No such file or directory
############################################################
ls: cannot access 'comets.txt': No such file or directory
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
ls: cannot access 'asassn_transients_list.txt': No such file or directory
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
ls: cannot access 'tocp_transients_list.txt': No such file or directory

=== Transient Factory Profiling ===
Started: Tue Aug  4 00:18:01 CDT 2026
=======================================
TIMING SExtractor: 1 seconds
TIMING matching_and_photometry: 1 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 1 seconds
    VAST_RUN_default.sex.telephoto_lens_onlybrightstars_v1: 3s (0.05 min)
TIMING SExtractor: 6 seconds
TIMING matching_and_photometry: 5 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 4 seconds
    VAST_RUN_default.sex.telephoto_lens_vSTL: 19s (0.32 min)
FIELD_Cam-08-Q1b1x1: 34s (0.57 min)
=======================================
TOTAL_RUNTIME: 50s (0.83 min)
Finished: Tue Aug  4 00:18:51 CDT 2026