FITS images used in this processing run:

Field Cam-10-Q2b1x1 reference image: Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
Field Cam-10-Q2b1x1 reference image: Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits
Field Cam-10-Q2b1x1 second-epoch image: Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
Field Cam-10-Q2b1x1 second-epoch image: Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits

WARNING: VaST exited with code 1 on the field Cam-10-Q2b1x1 after completing the measurements (memory cleanup crash); the transient search continues.
## VaST run with SExtractor config file default.sex.telephoto_lens_onlybrightstars_v1 ##
Images processed 4
Images used for photometry 2
Ref.  image: 2461058.80202095 18.01.2026 07:14:44.610   /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
First image: 2461058.80202095 18.01.2026 07:14:44.610   /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
Last  image: 2461082.77083781 11.02.2026 06:29:50.387   /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.49
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: 4 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):  10176
Objects passed selection criteria:  10082
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: 10867
Average stars matched: 10694 (98.408 %)
Memory usage VmPeak:   237584 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Fri Aug 14 19:27:11 CDT 2026
VaST build number  1.0rc89-191-g1c132b07
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-08-14)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Sun Aug 16 04:27:05 CDT 2026
Host name: tau
***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################
WARNING: VaST exited with code 1 on the field Cam-10-Q2b1x1 after completing the measurements (memory cleanup crash); the transient search continues.
## VaST run with SExtractor config file default.sex.telephoto_lens_vSTL ##
Images processed 4
Images used for photometry 2
Ref.  image: 2461058.80202095 18.01.2026 07:14:44.610   /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
First image: 2461058.80202095 18.01.2026 07:14:44.610   /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
Last  image: 2461082.77083781 11.02.2026 06:29:50.387   /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.14
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: 13 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):  67772
Objects passed selection criteria:  67436
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: 73736
Average stars matched: 70852.5 (96.0894 %)
Memory usage VmPeak:   294664 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Fri Aug 14 19:27:11 CDT 2026
VaST build number  1.0rc89-191-g1c132b07
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-08-14)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Sun Aug 16 04:27:19 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: 
Cam-10-Q2b1x1
#######################################
########### Starting Cam-10-Q2b1x1 ###########
Processing Cam-10-Q2b1x1
server tau has sufficient free disk space available: 869436 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 869436 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.png' -> 'transient_report/Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits_preview.png'

Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits


renamed 'Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.png' -> 'transient_report/Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits_preview.png'

Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.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= 491.4987
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 638.0208
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1655.0402
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 349.2062
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1656.7352
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 349.9621
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 3.36733
INFO:                  SECOND_EPOCH__SD_ratio= 0.002
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 =     26.6800003051758 / [degC] Focuser temperature
AMBTEMP =                 26.5 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-08-16T02:35:25.6566882' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-16T07:35:25.6566882' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61268.3162691668 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-16T07:35:35.5556931' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61268.3163837385 / 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      =     102.853747642553 / [deg] RA of telescope" status=0
Record 32: "DEC     =     61.9996639614978 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     14.8613888888889 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =              22.9275 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.84421839003359 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'West'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Cam-10'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '06 51 26'           / [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  =                20440 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20440 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     26.6800003051758 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     26.6800003051758 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 14.9 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 49.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               905.32 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 26.5 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 36.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=            20.201616 / [kph] Wind gust" status=0
Record 61: "WINDSPD =            13.701096 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/d_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits :)

Spent 0.737480 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/d_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 37096.658242
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits :)


No overscan detected - all values seem high! (left_median=24199.0, right_median=29433.0)
renamed 'mff_TTUQ2b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     26.7000007629395 / [degC] Focuser temperature
AMBTEMP =                 26.5 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-08-16T02:36:03.6902315' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-16T07:36:03.6902315' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =      61268.316709375 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-16T07:36:13.5906144' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61268.3168239584 / 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      =     102.853747578567 / [deg] RA of telescope" status=0
Record 32: "DEC     =     61.9996639846194 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     14.9127777777778 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     22.9833333333333 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =      3.8316613481539 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'West'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Cam-10'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '06 51 26'           / [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  =                20440 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20440 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     26.7000007629395 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     26.7000007629395 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 14.9 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 49.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               905.32 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 26.5 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 36.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=            20.201616 / [kph] Wind gust" status=0
Record 61: "WINDSPD =            13.701096 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/d_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits :)

Spent 0.816640 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/d_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 37096.658242
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits :)


No overscan detected - all values seem high! (left_median=24199.0, right_median=29433.0)
renamed 'mff_TTUQ2b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.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_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
Previews of the CALIBRATED second-epoch images:


fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits



fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.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/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
  
Last  image: 2461268.81638491 16.08.2026 07:35:25.656 UTC
WARNING: VaST exited with code 1 on the field Cam-10-Q2b1x1 AFTER completing the measurements. This is a memory-management crash during cleanup (a VaST bug to report), NOT a wrong field / clouds / bad focus. The lightcurves were written, so the transient search continues.
____ VaST output (crashed during memory cleanup; the measurements above are complete) ____

--==VaST 1.0rc90==--

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

Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits is already a symlink and we do not allow symlinks on symlinks
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits is already a symlink and we do not allow symlinks on symlinks

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx)...  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-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.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 Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits catalog from cache
SExtractor catalog cache: restored Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits catalog from cache
Running SExtractor in 3 parallel threads...
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.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_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.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_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits > image00003.cat.sex_log 2>&1
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits
18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.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_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.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_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.2,6.2,5.6,6.8,7.4,8.1 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.3,6.3,5.6,6.9,7.5,8.2 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits


Done with SExtractor!

TIMING SExtractor: 2 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.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: 2026-01-18T07:14:44.6104086
Setting observation time using DATE-OBS keyword: 2026-01-18T07:14:44.6104086

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-01-18T07:14:44.610
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
Exposure 20 sec, 18.01.2026 07:14:44.610 UTC = JD(UTC) 2461058.80202095 mid. exp.
The reference image star  9162.977    18.968 is rejected, see bad_region.lst
The reference image star  7815.449    22.674 is rejected, see bad_region.lst
The reference image star  9239.171    21.733 is rejected, see bad_region.lst
The reference image star  9295.190    23.020 is rejected, see bad_region.lst
The reference image star  8672.612    13.159 is rejected, see bad_region.lst
The reference image star  8628.670    11.204 is rejected, see bad_region.lst
The reference image star  8564.836     8.583 is rejected, see bad_region.lst
The reference image star  7826.268     7.392 is rejected, see bad_region.lst
The reference image star  8696.648     2.609 is rejected, see bad_region.lst
The reference image star  8192.599     4.750 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: 11212, (11211 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: 4549
 * rejected close to frame edge: 46
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>6.1 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 3
 * 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: -7.49
Detection limit from the magnitude-SNR relation= -7.5  (5.0 sigma detection)
The simple faintest star detection limit= -9.6
80 percent brightest stars detection limit= -10.4
Selected detection limit= -10.4
Final detection limit= -10.4 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.06.1 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 3
 * 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'.
    10522 * detected, using  469/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.006422, number_of_ambiguous_matches=72 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=10182 inliers=10182 rms 0.32 -> 0.32 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.003924, number_of_ambiguous_matches=44 
10178 * matched, [CVPOLY iter 2: order=2 pairs=10178 inliers=10178 rms 0.21 -> 0.21 pix, max corner correction 0.3 pix] fraction_of_ambiguous_matches= 0.002765, number_of_ambiguous_matches=31 
10176 * matched (2nd iteration). [CVPOLY iter 3: order=3 pairs=10176 inliers=10176 rms 0.09 -> 0.09 pix, max corner correction 0.2 pix] fraction_of_ambiguous_matches= 0.001249, number_of_ambiguous_matches=14 
10176 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.130
    10522 stars detected, 10176 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 9345, N_manually_selected_comparison_stars = 0
Using 9345 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 9344 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix +0.00000*Y_pix -0.00234
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 9336 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.54
    11558 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  203428 kB used, 237584 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.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: 2026-08-16T07:35:25.6566882
Setting observation time using DATE-OBS keyword: 2026-08-16T07:35:25.6566882

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-16T07:35:25.656
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
The star  7754.594  5191.105 is rejected, see bad_region.lst
The star  7619.663  6017.019 is rejected, see bad_region.lst
The star  7651.818  6146.883 is rejected, see bad_region.lst
The star  8362.950  5508.316 is rejected, see bad_region.lst
The star  7784.656  5895.486 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 1059
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 5
 * rejected close to frame edge: 9
 * rejected as being too small (<1.6 pix): 0
 * rejected as being too large (>6.3 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'.
     1059 * 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=329 inliers=329 rms 2.41 -> 0.18 pix, max corner correction 14.7 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
329 * matched, [CVPOLY iter 2: order=1 pairs=329 inliers=329 rms 0.18 -> 0.18 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
329 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=329 inliers=329 rms 0.18 -> 0.18 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
329 * matched (3rd iteration). Success!
  rotation [degrees] = -171.964
     1059 stars detected,   329 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 197, N_manually_selected_comparison_stars = 0
Using 197 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 178 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00032*X_pix -0.00022*Y_pix -0.03913
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_B * Y_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 178 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.96
 ERROR!!! Magnitude calibration failure. Dropping image. 
    11558 objects stored in memory (1000000 max.)
memory:  202296 kB used, 237584 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.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: 2026-08-16T07:36:03.6902315
Setting observation time using DATE-OBS keyword: 2026-08-16T07:36:03.6902315

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-16T07:36:03.690
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
The star  7752.934  5193.340 is rejected, see bad_region.lst
The star  7650.194  6149.085 is rejected, see bad_region.lst
The star  7783.051  5897.829 is rejected, see bad_region.lst
The star  8361.295  5510.583 is rejected, see bad_region.lst
The star  7618.155  6019.324 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 1042
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 5
 * rejected close to frame edge: 9
 * rejected as being too small (<1.6 pix): 0
 * rejected as being too large (>6.2 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
     1042 * 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=323 inliers=323 rms 2.33 -> 0.18 pix, max corner correction 7.7 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
323 * matched, [CVPOLY iter 2: order=1 pairs=323 inliers=323 rms 0.18 -> 0.18 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
323 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=323 inliers=323 rms 0.18 -> 0.18 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
323 * matched (3rd iteration). Success!
  rotation [degrees] = -171.887
     1042 stars detected,   323 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 188, N_manually_selected_comparison_stars = 0
Using 188 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 168 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00034*X_pix -0.00021*Y_pix -0.16391
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_B * Y_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 168 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.94
 ERROR!!! Magnitude calibration failure. Dropping image. 
    11558 objects stored in memory (1000000 max.)
memory:  202292 kB used, 237584 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 21734 (21734 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  2416 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  3142 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  1291 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  1304 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  2023 stars

done!  =)
TIMING select_aperture: 0 seconds
WARNING: Can't open candidates-transients.lst for reading! -- No candidates found?
Non-zero exit code of lib/transient_list
ERROR running  lib/create_list_of_candidate_transients.sh
Computing lightcurve statistics...  Will not compute variability indexes for objects having <1 points in lightcurve
You may disable this by commenting out the line '#define DROP_LIGHTCURVES_WITH_SMALL_NUMBER_OF_POINTS_FROM_ALL_PLOTS' in src/vast_limits.h an re-compiling VaST with 'make'

Computing, please wait a bit
....................................................................................................
vast_lightcurve_statistics.log: 10082 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-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits.cat to cache
SExtractor catalog cache: saved Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.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-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
Last  image: 2461268.81638491 16.08.2026 07:35:25.656 UTC
ERROR running VaST on the field Cam-10-Q2b1x1 (less than 4 images processed)
exp_start= 18.01.2026 07:14:44.610  exp=   20.000  JD= 2461058.80202095  ap=  6.1  rotation=   0.000  *detected= 11212  *matched= 11212  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
exp_start= 11.02.2026 06:29:50.387  exp=   20.000  JD= 2461082.77083781  ap=  6.1  rotation=  -0.130  *detected= 10522  *matched= 10176  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits
exp_start= 16.08.2026 07:35:25.656  exp=   20.000  JD= 2461268.81638491  ap=  6.3  rotation= -171.964  *detected=  1059  *matched=   329  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
exp_start= 16.08.2026 07:36:03.690  exp=   20.000  JD= 2461268.81682512  ap=  6.2  rotation= -171.887  *detected=  1042  *matched=   323  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.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-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
  
Last  image: 2461268.81638491 16.08.2026 07:35:25.656 UTC
WARNING: VaST exited with code 1 on the field Cam-10-Q2b1x1 AFTER completing the measurements. This is a memory-management crash during cleanup (a VaST bug to report), NOT a wrong field / clouds / bad focus. The lightcurves were written, so the transient search continues.
____ VaST output (crashed during memory cleanup; the measurements above are complete) ____

--==VaST 1.0rc90==--

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

Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits is already a symlink and we do not allow symlinks on symlinks
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits is already a symlink and we do not allow symlinks on symlinks

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx)...  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-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.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 Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits catalog from cache
SExtractor catalog cache: restored Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.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-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.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...
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.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_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.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_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.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_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.7,4.7,4.2,5.1,5.6,6.0 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.6,4.6,4.1,5.0,5.5,5.9 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits


Done with SExtractor!

TIMING SExtractor: 5 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.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: 2026-01-18T07:14:44.6104086
Setting observation time using DATE-OBS keyword: 2026-01-18T07:14:44.6104086

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-01-18T07:14:44.610
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
Exposure 20 sec, 18.01.2026 07:14:44.610 UTC = JD(UTC) 2461058.80202095 mid. exp.
The reference image star  8394.556    44.906 is rejected, see bad_region.lst
The reference image star  9050.274    38.380 is rejected, see bad_region.lst
The reference image star  9162.977    18.968 is rejected, see bad_region.lst
The reference image star  7815.449    22.676 is rejected, see bad_region.lst
The reference image star  9239.168    21.733 is rejected, see bad_region.lst
The reference image star  9018.283    26.507 is rejected, see bad_region.lst
The reference image star  9295.189    23.021 is rejected, see bad_region.lst
The reference image star  9135.931    21.767 is rejected, see bad_region.lst
The reference image star  7777.391    16.005 is rejected, see bad_region.lst
The reference image star  8672.611    13.160 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: 73933, (73931 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 13
 * rejected inside rectangles defined in bad_region.lst: 22960
 * rejected close to frame edge: 311
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.6 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 62
 * 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: -7.14
Detection limit from the magnitude-SNR relation= -7.1  (5.0 sigma detection)
The simple faintest star detection limit= -6.5
80 percent brightest stars detection limit= -7.6
Selected detection limit= -7.6
Final detection limit= -7.6 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.04.5 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): 56
 * 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'.
    73539 * detected, using  497/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.016244, number_of_ambiguous_matches=1201 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=67828 inliers=67828 rms 0.33 -> 0.33 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.016231, number_of_ambiguous_matches=1200 
67828 * matched, [CVPOLY iter 2: order=1 pairs=67828 inliers=67828 rms 0.33 -> 0.33 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.016231, number_of_ambiguous_matches=1200 
67828 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=67828 inliers=67828 rms 0.33 -> 0.33 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.007723, number_of_ambiguous_matches=571 
67772 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.130
    73539 stars detected, 67772 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 61969, N_manually_selected_comparison_stars = 0
Using 61969 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 61961 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix +0.00000*Y_pix -0.00051
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 57856 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.16
    79700 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  259444 kB used, 294664 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.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: 2026-08-16T07:35:25.6566882
Setting observation time using DATE-OBS keyword: 2026-08-16T07:35:25.6566882

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-16T07:35:25.656
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
The star  8888.917   242.995 is rejected, see bad_region.lst
The star  8899.988   510.002 is rejected, see bad_region.lst
The star  8843.002  1331.998 is rejected, see bad_region.lst
The star  8208.996  1400.002 is rejected, see bad_region.lst
The star  9052.994  1534.997 is rejected, see bad_region.lst
The star  1123.000  1551.005 is rejected, see bad_region.lst
The star  9356.011  1814.991 is rejected, see bad_region.lst
The star  7501.003  1917.014 is rejected, see bad_region.lst
The star  9150.989  2410.016 is rejected, see bad_region.lst
The star  8242.007  3125.982 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 9801
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 1
 * rejected inside rectangles defined in bad_region.lst: 84
 * rejected close to frame edge: 65
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.7 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): 17
 * 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'.
     9801 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000075, number_of_ambiguous_matches=6 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=3631 inliers=3631 rms 2.32 -> 0.46 pix, max corner correction 12.6 pix] fraction_of_ambiguous_matches= 0.000025, number_of_ambiguous_matches=2 
3635 * matched, [CVPOLY iter 2: order=3 pairs=3635 inliers=3635 rms 0.35 -> 0.33 pix, max corner correction 7.1 pix] fraction_of_ambiguous_matches= 0.000025, number_of_ambiguous_matches=2 
3635 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=3635 inliers=3635 rms 0.33 -> 0.33 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
3629 * matched (3rd iteration). Success!
  rotation [degrees] = -171.964
     9801 stars detected,  3629 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 2847, N_manually_selected_comparison_stars = 0
Using 2847 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 2004 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00049*X_pix -0.00025*Y_pix -0.53703
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_B * Y_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 2004 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.66
 ERROR!!! Magnitude calibration failure. Dropping image. 
    79700 objects stored in memory (1000000 max.)
memory:  269500 kB used, 294664 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.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: 2026-08-16T07:36:03.6902315
Setting observation time using DATE-OBS keyword: 2026-08-16T07:36:03.6902315

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-16T07:36:03.690
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
The star  8888.792   243.011 is rejected, see bad_region.lst
The star  8899.996   510.008 is rejected, see bad_region.lst
The star  8843.000  1331.999 is rejected, see bad_region.lst
The star  8209.004  1399.998 is rejected, see bad_region.lst
The star  9052.965  1534.990 is rejected, see bad_region.lst
The star  1123.007  1550.997 is rejected, see bad_region.lst
The star  8519.945  2340.134 is rejected, see bad_region.lst
The star  9151.000  2410.008 is rejected, see bad_region.lst
The star  8406.057  2599.020 is rejected, see bad_region.lst
The star  8241.996  3125.974 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 10106
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 2
 * rejected inside rectangles defined in bad_region.lst: 82
 * rejected close to frame edge: 65
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.6 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 17
 * 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'.
    10106 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000301, number_of_ambiguous_matches=24 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=3711 inliers=3711 rms 3.17 -> 1.03 pix, max corner correction 16.8 pix] fraction_of_ambiguous_matches= 0.000063, number_of_ambiguous_matches=5 
3734 * matched, [CVPOLY iter 2: order=3 pairs=3734 inliers=3734 rms 0.38 -> 0.29 pix, max corner correction 7.9 pix] fraction_of_ambiguous_matches= 0.000050, number_of_ambiguous_matches=4 
3735 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=3735 inliers=3735 rms 0.31 -> 0.31 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000013, number_of_ambiguous_matches=1 
3731 * matched (3rd iteration). Success!
  rotation [degrees] = -171.980
    10106 stars detected,  3731 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 2951, N_manually_selected_comparison_stars = 0
Using 2951 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 2081 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00047*X_pix -0.00023*Y_pix -0.57395
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_B * Y_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 2081 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.63
 ERROR!!! Magnitude calibration failure. Dropping image. 
    79700 objects stored in memory (1000000 max.)
memory:  269632 kB used, 294664 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 2 seconds
Done with measurements! =)

Total number of measurements 147472 (147472 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 11657 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 19485 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  9596 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 11871 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 15163 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: 67436 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-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits.cat to cache
SExtractor catalog cache: saved Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.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-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
Last  image: 2461268.81638491 16.08.2026 07:35:25.656 UTC
ERROR running VaST on the field Cam-10-Q2b1x1 (less than 4 images processed)
exp_start= 18.01.2026 07:14:44.610  exp=   20.000  JD= 2461058.80202095  ap=  4.6  rotation=   0.000  *detected= 73933  *matched= 73933  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-01-18_01-14-44_20.00sec_-15.00C_LIGHT_0302.fits
exp_start= 11.02.2026 06:29:50.387  exp=   20.000  JD= 2461082.77083781  ap=  4.5  rotation=  -0.130  *detected= 73539  *matched= 67772  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cam-10-Q2b1x1_2026-02-11_00-29-50_20.00sec_-15.00C_LIGHT_0256.fits
exp_start= 16.08.2026 07:35:25.656  exp=   20.000  JD= 2461268.81638491  ap=  4.7  rotation= -171.964  *detected=  9801  *matched=  3629  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-35-25_20.00sec_-0.00C_LIGHT_0344.fits
exp_start= 16.08.2026 07:36:03.690  exp=   20.000  JD= 2461268.81682512  ap=  4.6  rotation= -171.980  *detected= 10106  *matched=  3731  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Cam-10-Q2b1x1_042439_TTUQ2b1x1_2656207_9MT2jcQx/fd_Cam-10-Q2b1x1_2026-08-16_02-36-03_20.00sec_-0.00C_LIGHT_0345.fits
########### Completed Cam-10-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: Sun Aug 16 04:26:40 CDT 2026
=======================================
TIMING SExtractor: 2 seconds
TIMING matching_and_photometry: 1 seconds
TIMING lightcurve_write: 1 seconds
TIMING select_aperture: 0 seconds
    VAST_RUN_default.sex.telephoto_lens_onlybrightstars_v1: 5s (0.08 min)
TIMING SExtractor: 5 seconds
TIMING matching_and_photometry: 2 seconds
TIMING lightcurve_write: 1 seconds
TIMING select_aperture: 4 seconds
    VAST_RUN_default.sex.telephoto_lens_vSTL: 14s (0.23 min)
FIELD_Cam-10-Q2b1x1: 35s (0.58 min)
=======================================
TOTAL_RUNTIME: 39s (0.65 min)
Finished: Sun Aug 16 04:27:19 CDT 2026