FITS images used in this processing run:

Field Lyr-03-Q2b1x1 reference image: Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
Field Lyr-03-Q2b1x1 reference image: Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits
Field Lyr-03-Q2b1x1 second-epoch image: Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
Field Lyr-03-Q2b1x1 second-epoch image: Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits

WARNING: VaST exited with code 1 on the field Lyr-03-Q2b1x1 after completing the measurements (memory cleanup crash); the transient search continues.
## VaST run with SExtractor config file default.sex.telephoto_lens_onlybrightstars_v1 ##
Images processed 4
Images used for photometry 2
Ref.  image: 2461243.80902481 22.07.2026 07:24:49.744   /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
First image: 2461243.80902481 22.07.2026 07:24:49.744   /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
Last  image: 2461244.80429580 23.07.2026 07:18:01.157   /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.51
Magnitude-Size filter: Disabled
For each source choose aperture with the smallest scatter: YES
Photometric errors rescaling: NO
Number of identified bad images: 0
Number of SysRem iterations: 0
User-specified moving object: none
Computation time: 3 seconds
Number of parallel threads: 3
SExtractor parameter file: default.sex
Some important SExtractor parameters:
DETECT_MINAREA  10.0             # minimum number of pixels above threshold
DETECT_THRESH   10.0             #  or , in mag.arcsec-2
ANALYSIS_THRESH 10.0             #  or , in mag.arcsec-2
SATUR_LEVEL     55000.0         # level (in ADUs) at which arises saturation
GAIN            0.37            # detector gain in e-/ADU
VAST_SKIP_INDEX_VS_MAG is set - skipping the lib/index_vs_mag variability-index fitting
Total objects detected (at least 2 times):  27315
Objects passed selection criteria:  27087
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: 29644.5
Average stars matched: 28725.5 (96.8999 %)
Memory usage VmPeak:   253528 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Thu Aug  6 15:05:04 CDT 2026
VaST build number  1.0rc89-190-gdf2934b0
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-08-06)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Sat Aug  8 05:03:58 CDT 2026
Host name: tau
***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################
WARNING: VaST exited with code 1 on the field Lyr-03-Q2b1x1 after completing the measurements (memory cleanup crash); the transient search continues.
## VaST run with SExtractor config file default.sex.telephoto_lens_vSTL ##
Images processed 4
Images used for photometry 2
Ref.  image: 2461243.80902481 22.07.2026 07:24:49.744   /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
First image: 2461243.80902481 22.07.2026 07:24:49.744   /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
Last  image: 2461244.80429580 23.07.2026 07:18:01.157   /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.27
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: 27 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):  203830
Objects passed selection criteria:  202903
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: 225312
Average stars matched: 215332 (95.5706 %)
Memory usage VmPeak:   672572 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Thu Aug  6 15:05:04 CDT 2026
VaST build number  1.0rc89-190-gdf2934b0
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-08-06)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Sat Aug  8 05:04:27 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: 
Lyr-03-Q2b1x1
#######################################
########### Starting Lyr-03-Q2b1x1 ###########
Processing Lyr-03-Q2b1x1
server tau has sufficient free disk space available: 430309 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 430309 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.png' -> 'transient_report/Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits_preview.png'

Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits


renamed 'Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.png' -> 'transient_report/Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits_preview.png'

Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.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= 444.8045
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 743.8818
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1647.7995
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 407.2167
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1662.4669
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 394.0559
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 3.70455
INFO:                  SECOND_EPOCH__SD_ratio= 0.033
INFO: the new-to-reference mean image value ratio check is disabled (DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK=yes) - expected with a background-subtracted reference image
----------------------------------------------
Calibration settings: DARK_FRAMES_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ2b1x1/darks FLAT_FIELD_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ2b1x1/flats
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     23.0799999237061 / [degC] Focuser temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
Header: 67 keys total, 4 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-08-08T04:57:09.9765406' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-08T09:57:09.9765406' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61260.4146987963 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-08T09:57:19.8766481' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61260.4148133798 / 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      =      285.00150475266 / [deg] RA of telescope" status=0
Record 32: "DEC     =     30.0002122003311 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     24.4858333333333 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     290.932222222222 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.40147098881612 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Lyr-03'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '19 00 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+30 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "FOCNAME = 'ZWO Focuser'        / Focusing equipment name" status=0
Record 50: "FOCPOS  =                20457 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20457 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     23.0799999237061 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     23.0799999237061 / [degC] Focuser temperature" status=0
Record 55: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 56: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 57: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 58: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 59: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 60: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 61: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 62: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 63: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 64: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 65: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 66: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 67: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/d_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits :)

Spent 0.473894 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-07-30.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-07-30.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/d_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-07-30.fit 9576 6388  16 bitpix
Avarage count on flat field image: 19899.553568
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits :)


No overscan detected - all values seem high! (left_median=13115.0, right_median=15628.5)
renamed 'mff_TTUQ2b1x1_2026-07-30.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                  0.0 / [degC] CCD temperature
FOCTEMP =     23.0200004577637 / [degC] Focuser temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits 
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
Header: 67 keys total, 4 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-08-08T04:58:08.8534880' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-08T09:58:08.8534880' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61260.4153802432 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-08T09:58:18.7565401' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61260.4154948611 / 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      =     285.001504752454 / [deg] RA of telescope" status=0
Record 32: "DEC     =     30.0002121498223 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     24.2911111111111 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     291.037777777778 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.41932726166417 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Lyr-03'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '19 00 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+30 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "FOCNAME = 'ZWO Focuser'        / Focusing equipment name" status=0
Record 50: "FOCPOS  =                20457 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20457 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     23.0200004577637 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     23.0200004577637 / [degC] Focuser temperature" status=0
Record 55: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 56: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 57: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 58: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 59: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 60: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 61: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 62: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 63: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 64: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 65: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 66: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 67: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-07-30.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/d_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits :)

Spent 0.464372 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-07-30.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-07-30.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/d_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-07-30.fit 9576 6388  16 bitpix
Avarage count on flat field image: 19899.553568
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits :)


No overscan detected - all values seem high! (left_median=13115.0, right_median=15628.5)
renamed 'mff_TTUQ2b1x1_2026-07-30.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
Dark frame used to calibrate the second-epoch images:



Flat field used to calibrate the second-epoch images:



after the calibration attempt:
SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
Previews of the CALIBRATED second-epoch images:


fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits



fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.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/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
  
Last  image: 2461260.91481454 08.08.2026 09:57:09.976 UTC
WARNING: VaST exited with code 1 on the field Lyr-03-Q2b1x1 AFTER completing the measurements. This is a memory-management crash during cleanup (a VaST bug to report), NOT a wrong field / clouds / bad focus. The lightcurves were written, so the transient search continues.
____ VaST output (crashed during memory cleanup; the measurements above are complete) ____

--==VaST 1.0rc90==--

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

Checking the list of input images specified on the command line ...

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl)...  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/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.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 Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits catalog from cache
SExtractor catalog cache: restored Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.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/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2Excluded a total of 31 image regions  (defined in bad_region.lst).
b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
The above guess is based on the non-default gain value specified in default.sex by user
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.0,6.0,5.4,6.7,7.3,7.9 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.1,6.1,5.5,6.7,7.3,7.9 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits


Done with SExtractor!

TIMING SExtractor: 1 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_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: 2026-07-22T07:24:49.7445368
Setting observation time using DATE-OBS keyword: 2026-07-22T07:24:49.7445368

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-07-22T07:24:49.744
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
Exposure 20 sec, 22.07.2026 07:24:49.744 UTC = JD(UTC) 2461243.80902481 mid. exp.
The reference image star  9281.022    25.098 is rejected, see bad_region.lst
The reference image star  7549.708    22.566 is rejected, see bad_region.lst
The reference image star  9362.859    15.491 is rejected, see bad_region.lst
The reference image star  9025.673    12.093 is rejected, see bad_region.lst
The reference image star  8446.713     9.806 is rejected, see bad_region.lst
The reference image star  7977.192    10.211 is rejected, see bad_region.lst
The reference image star  7880.181     7.889 is rejected, see bad_region.lst
The reference image star  7954.075     6.206 is rejected, see bad_region.lst
The reference image star  8303.484     5.189 is rejected, see bad_region.lst
The reference image star  8184.052     6.251 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: 30136, (30136 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: 5554
 * rejected close to frame edge: 139
 * 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): 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'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.51
Detection limit from the magnitude-SNR relation= -7.5  (5.0 sigma detection)
The simple faintest star detection limit= -9.4
80 percent brightest stars detection limit= -10.3
Selected detection limit= -10.3
Final detection limit= -10.3 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.06.2 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): 71
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
    29153 * detected, using  483/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.016359, number_of_ambiguous_matches=493 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=27352 inliers=27352 rms 0.40 -> 0.40 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.014036, number_of_ambiguous_matches=423 
27347 * matched, [CVPOLY iter 2: order=1 pairs=27347 inliers=27347 rms 0.36 -> 0.36 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.009092, number_of_ambiguous_matches=274 
27331 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=27331 inliers=27331 rms 0.23 -> 0.23 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.004314, number_of_ambiguous_matches=130 
27315 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.006
    29153 stars detected, 27315 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 23774, N_manually_selected_comparison_stars = 0
Using 23774 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 23774 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix +0.00000*Y_pix +0.00723
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 23768 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.53
    31974 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  214388 kB used, 253528 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-08-08T09:57:09.9765406
Setting observation time using DATE-OBS keyword: 2026-08-08T09:57:09.9765406

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-08T09:57:09.976
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
The star  7517.981     7.686 is rejected, see bad_region.lst
The star  7642.466   140.382 is rejected, see bad_region.lst
The star  9275.230   233.721 is rejected, see bad_region.lst
The star  8091.142   294.812 is rejected, see bad_region.lst
The star  7874.859   374.916 is rejected, see bad_region.lst
The star  8010.482   371.624 is rejected, see bad_region.lst
The star  9252.836   377.392 is rejected, see bad_region.lst
The star  7965.297   393.873 is rejected, see bad_region.lst
The star  7628.588   594.282 is rejected, see bad_region.lst
The star  8436.082   654.616 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 4019
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 217
 * rejected close to frame edge: 31
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>6.1 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 2
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     4019 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000125, number_of_ambiguous_matches=4 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=3984 inliers=3984 rms 0.42 -> 0.13 pix, max corner correction 4.6 pix] fraction_of_ambiguous_matches= 0.000125, number_of_ambiguous_matches=4 
3984 * matched, [CVPOLY iter 2: order=1 pairs=3984 inliers=3984 rms 0.13 -> 0.13 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000125, number_of_ambiguous_matches=4 
3984 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=3984 inliers=3984 rms 0.13 -> 0.13 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000063, number_of_ambiguous_matches=2 
3984 * matched (3rd iteration). Success!
  rotation [degrees] =   0.443
     4019 stars detected,  3984 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 2850, N_manually_selected_comparison_stars = 0
Using 2850 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 2692 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00020*X_pix +0.00008*Y_pix -0.53292
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 2692 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.94
 ERROR!!! Magnitude calibration failure. Dropping image. 
    31974 objects stored in memory (1000000 max.)
The transient candidate (new frame position  2908.749  3988.771 ; ref frame position:  2906.179  3964.161) is rejected as at the reference frame it would land at a bad region listed in bad_region.lst
memory:  212272 kB used, 253528 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-08-08T09:58:08.8534880
Setting observation time using DATE-OBS keyword: 2026-08-08T09:58:08.8534880

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-08T09:58:08.853
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
The star  7522.445    13.054 is rejected, see bad_region.lst
The star  7647.020   145.790 is rejected, see bad_region.lst
The star  8408.710   221.938 is rejected, see bad_region.lst
The star  9279.780   238.755 is rejected, see bad_region.lst
The star  8095.550   299.983 is rejected, see bad_region.lst
The star  7879.278   380.137 is rejected, see bad_region.lst
The star  8014.900   376.830 is rejected, see bad_region.lst
The star  9257.287   382.439 is rejected, see bad_region.lst
The star  7969.772   399.029 is rejected, see bad_region.lst
The star  7633.157   599.636 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 3608
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 158
 * rejected close to frame edge: 26
 * rejected as being too small (<1.5 pix): 0
 * rejected as being too large (>6.0 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
     3608 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000063, number_of_ambiguous_matches=2 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=3571 inliers=3571 rms 0.44 -> 0.13 pix, max corner correction 3.9 pix] fraction_of_ambiguous_matches= 0.000063, number_of_ambiguous_matches=2 
3571 * matched, [CVPOLY iter 2: order=1 pairs=3571 inliers=3571 rms 0.13 -> 0.13 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000063, number_of_ambiguous_matches=2 
3571 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=3571 inliers=3571 rms 0.13 -> 0.13 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000031, number_of_ambiguous_matches=1 
3571 * matched (3rd iteration). Success!
  rotation [degrees] =   0.445
     3608 stars detected,  3571 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 2490, N_manually_selected_comparison_stars = 0
Using 2490 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 2282 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00019*X_pix +0.00008*Y_pix -0.47175
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 2282 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.93
 ERROR!!! Magnitude calibration failure. Dropping image. 
    31974 objects stored in memory (1000000 max.)
memory:  212160 kB used, 253528 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 59289 (59289 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 0 seconds
The lightcurve files have been written, freeing up more memory...
Creating vast_image_details.log ... 

Writing summary file: vast_summary.log ...  OK
Selecting the best aperture for each source
Aperture with index 0 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for  7957 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  7725 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  3280 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  3291 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  5062 stars

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

Computing, please wait a bit
..............................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 27087 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 Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits.cat to cache
SExtractor catalog cache: saved Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.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/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
Last  image: 2461260.91481454 08.08.2026 09:57:09.976 UTC
ERROR running VaST on the field Lyr-03-Q2b1x1 (less than 4 images processed)
exp_start= 22.07.2026 07:24:49.744  exp=   20.000  JD= 2461243.80902481  ap=  6.2  rotation=   0.000  *detected= 30136  *matched= 30136  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
exp_start= 23.07.2026 07:18:01.157  exp=   20.000  JD= 2461244.80429580  ap=  6.2  rotation=  -0.006  *detected= 29153  *matched= 27315  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits
exp_start= 08.08.2026 09:57:09.976  exp=   20.000  JD= 2461260.91481454  ap=  6.1  rotation=   0.443  *detected=  4019  *matched=  3984  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
exp_start= 08.08.2026 09:58:08.853  exp=   20.000  JD= 2461260.91549598  ap=  6.0  rotation=   0.445  *detected=  3608  *matched=  3571  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.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/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
  
Last  image: 2461260.91481454 08.08.2026 09:57:09.976 UTC
WARNING: VaST exited with code 1 on the field Lyr-03-Q2b1x1 AFTER completing the measurements. This is a memory-management crash during cleanup (a VaST bug to report), NOT a wrong field / clouds / bad focus. The lightcurves were written, so the transient search continues.
____ VaST output (crashed during memory cleanup; the measurements above are complete) ____

--==VaST 1.0rc90==--

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

Checking the list of input images specified on the command line ...

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl)...  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/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.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 Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits catalog from cache
SExtractor catalog cache: restored Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.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/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits
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_2026-08-08_CI_Lyr-03-Q2The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
The above guess is basb1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
The above guess is baed on the non-default gain value specified in default.sex by user
sed on the non-default gain value specified in default.sex by user
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.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)
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
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:    -1.0    -1.0     1.0     1.0  (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)
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)
Excluded a total of 31 image regions  (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)
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits > image00003.cat.sex_log 2>&1Excluding more image regions!.. (will not print them all)

Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.4,4.4,3.9,4.8,5.2,5.7 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.4,4.4,3.9,4.8,5.3,5.7 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits


Done with SExtractor!

TIMING SExtractor: 11 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/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_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: 2026-07-22T07:24:49.7445368
Setting observation time using DATE-OBS keyword: 2026-07-22T07:24:49.7445368

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-07-22T07:24:49.744
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
Exposure 20 sec, 22.07.2026 07:24:49.744 UTC = JD(UTC) 2461243.80902481 mid. exp.
The reference image star  7636.028     1.096 is rejected, see bad_region.lst
The reference image star  8330.420     1.304 is rejected, see bad_region.lst
The reference image star  7886.356     1.441 is rejected, see bad_region.lst
The reference image star  8091.908     1.370 is rejected, see bad_region.lst
The reference image star  8585.680     1.859 is rejected, see bad_region.lst
The reference image star  8645.192     1.687 is rejected, see bad_region.lst
The reference image star  8855.183     3.258 is rejected, see bad_region.lst
The reference image star  8567.146     2.131 is rejected, see bad_region.lst
The reference image star  7779.062     3.820 is rejected, see bad_region.lst
The reference image star  9458.220     8.882 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: 226835, (226835 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 33
 * rejected inside rectangles defined in bad_region.lst: 25850
 * rejected close to frame edge: 908
 * 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): 15
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.27
Detection limit from the magnitude-SNR relation= -7.3  (5.0 sigma detection)
The simple faintest star detection limit= -6.5
80 percent brightest stars detection limit= -7.8
Selected detection limit= -7.8
Final detection limit= -7.8 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.04.6 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'.
    223790 * detected, using  493/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.023987, number_of_ambiguous_matches=5441 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=203833 inliers=203833 rms 0.34 -> 0.33 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.023929, number_of_ambiguous_matches=5428 
203830 * matched, [CVPOLY iter 2: order=1 pairs=203830 inliers=203830 rms 0.33 -> 0.33 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.023929, number_of_ambiguous_matches=5428 
203830 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=203830 inliers=203830 rms 0.33 -> 0.33 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.023929, number_of_ambiguous_matches=5428 
203830 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.006
    223790 stars detected, 203830 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 160515, N_manually_selected_comparison_stars = 0
Using 160515 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 160505 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00001*X_pix +0.00000*Y_pix +0.01853
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 153834 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.28
    246795 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  394036 kB used, 425912 kB peak, 65263848 kB available RAM
Total number of measurements 450625 (450625 measurements stored in RAM)
sorting the measurements cached in memory,
writing lightcurve (outNNNNN.dat) files...
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-08-08T09:57:09.9765406
Setting observation time using DATE-OBS keyword: 2026-08-08T09:57:09.9765406

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-08T09:57:09.976
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
The star  7517.978     7.687 is rejected, see bad_region.lst
The star  9360.727     2.793 is rejected, see bad_region.lst
The star  7782.731    12.299 is rejected, see bad_region.lst
The star  7686.551    18.559 is rejected, see bad_region.lst
The star  7839.218    23.848 is rejected, see bad_region.lst
The star  8738.619    29.185 is rejected, see bad_region.lst
The star  7581.399    43.932 is rejected, see bad_region.lst
The star  7556.126    71.232 is rejected, see bad_region.lst
The star  8910.239    73.277 is rejected, see bad_region.lst
The star  7853.532    90.666 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 48332
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 4
 * rejected inside rectangles defined in bad_region.lst: 1539
 * rejected close to frame edge: 273
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 181
 * 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'.
    48332 * detected, using  106/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000425, number_of_ambiguous_matches=105 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=47788 inliers=47788 rms 0.33 -> 0.22 pix, max corner correction 4.3 pix] fraction_of_ambiguous_matches= 0.000425, number_of_ambiguous_matches=105 
47789 * matched, [CVPOLY iter 2: order=1 pairs=47789 inliers=47789 rms 0.22 -> 0.22 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000425, number_of_ambiguous_matches=105 
47789 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=47789 inliers=47789 rms 0.22 -> 0.22 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000425, number_of_ambiguous_matches=105 
47789 * matched (3rd iteration). Success!
  rotation [degrees] =   0.444
    48332 stars detected, 47789 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 32338, N_manually_selected_comparison_stars = 0
Using 32338 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 29527 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00021*X_pix +0.00008*Y_pix -0.57420
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 29527 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.63
 ERROR!!! Magnitude calibration failure. Dropping image. 
    246795 objects stored in memory (1000000 max.)
memory:  506212 kB used, 672572 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-08-08T09:58:08.8534880
Setting observation time using DATE-OBS keyword: 2026-08-08T09:58:08.8534880

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-08T09:58:08.853
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
The star  7522.439    13.053 is rejected, see bad_region.lst
The star  9365.278     7.329 is rejected, see bad_region.lst
The star  7843.328    29.212 is rejected, see bad_region.lst
The star  8742.655    34.246 is rejected, see bad_region.lst
The star  7586.138    49.721 is rejected, see bad_region.lst
The star  7560.431    76.939 is rejected, see bad_region.lst
The star  8915.592    78.376 is rejected, see bad_region.lst
The star  7857.633    95.640 is rejected, see bad_region.lst
The star  7924.612   102.926 is rejected, see bad_region.lst
The star  8369.674   115.932 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 44311
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 8
 * rejected inside rectangles defined in bad_region.lst: 1287
 * rejected close to frame edge: 262
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 140
 * 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'.
    44311 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000397, number_of_ambiguous_matches=98 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=43735 inliers=43735 rms 0.39 -> 0.23 pix, max corner correction 4.4 pix] fraction_of_ambiguous_matches= 0.000393, number_of_ambiguous_matches=97 
43736 * matched, [CVPOLY iter 2: order=1 pairs=43736 inliers=43736 rms 0.22 -> 0.22 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000393, number_of_ambiguous_matches=97 
43736 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=43736 inliers=43736 rms 0.22 -> 0.22 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000393, number_of_ambiguous_matches=97 
43736 * matched (3rd iteration). Success!
  rotation [degrees] =   0.448
    44311 stars detected, 43736 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 29198, N_manually_selected_comparison_stars = 0
Using 29198 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 26075 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00021*X_pix +0.00008*Y_pix -0.54566
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 26075 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.63
 ERROR!!! Magnitude calibration failure. Dropping image. 
    246795 objects stored in memory (1000000 max.)
memory:  506212 kB used, 672572 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 7 seconds
Done with measurements! =)

Total number of measurements 450625 (0 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 33934 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 59059 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 29019 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 28102 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 53716 stars

done!  =)
TIMING select_aperture: 6 seconds
Computing lightcurve statistics...  Will not compute variability indexes for objects having <1 points in lightcurve
You may disable this by commenting out the line '#define DROP_LIGHTCURVES_WITH_SMALL_NUMBER_OF_POINTS_FROM_ALL_PLOTS' in src/vast_limits.h an re-compiling VaST with 'make'

Computing, please wait a bit
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 202903 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 Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits.cat to cache
SExtractor catalog cache: saved Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_vSTL
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
Last  image: 2461260.91481454 08.08.2026 09:57:09.976 UTC
ERROR running VaST on the field Lyr-03-Q2b1x1 (less than 4 images processed)
exp_start= 22.07.2026 07:24:49.744  exp=   20.000  JD= 2461243.80902481  ap=  4.6  rotation=   0.000  *detected= 226835  *matched= 226835  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-22_02-24-49_20.00sec_5.00C_LIGHT_0302.fits
exp_start= 23.07.2026 07:18:01.157  exp=   20.000  JD= 2461244.80429580  ap=  4.6  rotation=  -0.006  *detected= 223790  *matched= 203830  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Lyr-03-Q2b1x1_2026-07-23_02-18-01_20.00sec_4.90C_LIGHT_0278.fits
exp_start= 08.08.2026 09:57:09.976  exp=   20.000  JD= 2461260.91481454  ap=  4.4  rotation=   0.444  *detected= 48332  *matched= 47789  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-57-09_20.00sec_-0.00C_LIGHT_0283.fits
exp_start= 08.08.2026 09:58:08.853  exp=   20.000  JD= 2461260.91549598  ap=  4.4  rotation=   0.448  *detected= 44311  *matched= 43736  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-08_CI_Lyr-03-Q2b1x1_050135_TTUQ2b1x1_963845_RatfSStl/fd_Lyr-03-Q2b1x1_2026-08-08_04-58-08_20.00sec_0.00C_LIGHT_0284.fits
########### Completed Lyr-03-Q2b1x1 ###########
The analysis was running at tau
We are allowed to update the exclusion list at tau host
Found ../exclusion_list_TTUQ2.txt
#### The exclusion list before filtering-out asteroids, bad pixels and adding Gaia sources ####
###################################################################################
renamed 'exclusion_list_index_html.txt_noasteroids' -> 'exclusion_list_index_html.txt'
renamed 'exclusion_list_index_html.txt_nohotpixels' -> 'exclusion_list_index_html.txt'
# Count candidates with no identification (that also don't look like hot pix)
Found 0 unidentified candidates (excluding asteroids, hot pixels and known variable stars).
###################################################################################
0 candidates found (excluding asteroids and hot pixels)
This does not look like a test run
###################################################################################
exclusion_list_gaiadr2.txt NOT FOUND
exclusion_list_apass.txt NOT FOUND
IS_THIS_TEST_RUN=NO  ALLOW_EXCLUSION_LIST_UPDATE= YES
#### Nothing to add to the exclusion list ####
The observatory MPC code is V36
############################################################
ls: cannot access 'planets.txt': No such file or directory
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT):
ls: cannot access 'moons.txt': No such file or directory
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT):
ls: cannot access 'spacecraft.txt': No such file or directory
############################################################
ls: cannot access 'comets.txt': No such file or directory
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
ls: cannot access 'asassn_transients_list.txt': No such file or directory
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
ls: cannot access 'tocp_transients_list.txt': No such file or directory

=== Transient Factory Profiling ===
Started: Sat Aug  8 05:03:26 CDT 2026
=======================================
TIMING SExtractor: 1 seconds
TIMING matching_and_photometry: 1 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 0 seconds
    VAST_RUN_default.sex.telephoto_lens_onlybrightstars_v1: 4s (0.07 min)
TIMING SExtractor: 11 seconds
TIMING matching_and_photometry: 7 seconds
TIMING lightcurve_write: 1 seconds
TIMING select_aperture: 6 seconds
    VAST_RUN_default.sex.telephoto_lens_vSTL: 29s (0.48 min)
FIELD_Lyr-03-Q2b1x1: 45s (0.75 min)
=======================================
TOTAL_RUNTIME: 61s (1.02 min)
Finished: Sat Aug  8 05:04:27 CDT 2026