FITS images used in this processing run:

Field Per-05-Q2b1x1 reference image: Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits
Field Per-05-Q2b1x1 reference image: Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.fits
Field Per-05-Q2b1x1 second-epoch image: Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
Field Per-05-Q2b1x1 second-epoch image: Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits

***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################
***** 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
SEXTRACTOR_CONFIG_FILES_HIGH_PRIORITY_EXTRA= default.sex.telephoto_lens_vTTU
HIGH_PRIORITY_FIELDS= Sco6 Oph-08-Q1b1x1 Oph-08-Q2b1x1 Sco-04-Q1b1x1 Sco-04-Q2b1x1 Sgr-04-Q1b1x1 Sgr-04-Q2b1x1 242
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: 
Per-05-Q2b1x1
#######################################
########### Starting Per-05-Q2b1x1 ###########
Processing Per-05-Q2b1x1
server tau has sufficient free disk space available: 227525 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 227525 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.png' -> 'transient_report/Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits_preview.png'

Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits


renamed 'Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.png' -> 'transient_report/Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits_preview.png'

Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.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= 551.5128
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 689.1023
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1653.7540
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 445.2735
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1726.7762
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 476.9056
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 2.99858
INFO:                  SECOND_EPOCH__SD_ratio= 0.066
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 =     12.3299999237061 / [degC] Focuser temperature
AMBTEMP =                 12.0 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-10-20T01:24:37.4988115' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-10-20T06:24:37.4988115' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61333.2671006713 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-10-20T06:24:47.4016869' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61333.2672152892 / 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      =     65.4510847658596 / [deg] RA of telescope" status=0
Record 32: "DEC     =     38.0001178470391 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     55.2947222222222 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     70.2688888888889 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     1.21577988346713 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'West'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Per-05'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '04 21 49'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+38 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  =                20678 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20678 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     12.3299999237061 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     12.3299999237061 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                  7.3 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 73.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               905.79 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 12.0 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                305.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             3.600288 / [kph] Wind gust" status=0
Record 61: "WINDSPD =               2.5002 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/d_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits :)

Spent 0.520242 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/d_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 37096.658242
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits :)


No overscan detected - all values seem high! (left_median=24199.0, right_median=29433.0)
renamed 'mff_TTUQ2b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =      12.289999961853 / [degC] Focuser temperature
AMBTEMP =                 12.0 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-10-20T01:25:17.0373714' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-10-20T06:25:17.0373714' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61333.2675582985 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-10-20T06:25:26.9380369' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61333.2676728936 / 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      =     65.4510847132228 / [deg] RA of telescope" status=0
Record 32: "DEC     =     38.0001178269189 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     55.4255555555556 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     70.2938888888889 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     1.21386838713922 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'West'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Per-05'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '04 21 49'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+38 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  =                20678 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20678 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =      12.289999961853 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=      12.289999961853 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                  7.3 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 73.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               905.79 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 12.0 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                305.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             3.600288 / [kph] Wind gust" status=0
Record 61: "WINDSPD =               2.5002 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/d_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits :)

Spent 0.503470 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/d_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 37096.658242
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits :)


No overscan detected - all values seem high! (left_median=24199.0, right_median=29433.0)
renamed 'mff_TTUQ2b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.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_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
Previews of the CALIBRATED second-epoch images:


fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits



fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.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/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
  
Last  image: 2461333.76721641 20.10.2026 06:24:37.498 UTC
WARNING: VaST exited with code 1 on the field Per-05-Q2b1x1 as too few input images were matched to the reference image - wrong pointing? clouds? very bad focus?
Blind plate solve of the unmatched second-epoch image fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits to check the telescope pointing
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
WCS_IMAGE_NAME=wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
Field of view for the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits was not set. Trying to guess...
The guess is  605 arcmin.
No image with WCS calibration found for /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits .... Determining astrometry method...
Using the local copy of Astrometry.net software...
Choosing aperture...
Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
/data_ssd/NMW-TexasTech/workdir/vast_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/lib/make_outxyls_for_astrometric_calibration found 3625 high-SNR stars for plate solving
 
This service uses tools provided by Astrometry.net.
For more information visit http://astrometry.net/ 

######### Trying to solve plate assuming 605' field of view #########
 /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
Using the local copy of Astrometry.net code
IMAGE_SIZE= --width 9576 --height 6388    SCALE_LOW=544.5 SCALE_HIGH=3025.0
Using solve-field binary
/usr/local/astrometry/bin/solve-field
Reading input file 1 of 1: "out3296063.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out3296063.axy"...
Field 1 did not solve (index index-4119.fits, field objects 1-10).
Field 1 did not solve (index index-4118.fits, field objects 1-10).
Field 1 did not solve (index index-4117.fits, field objects 1-10).
Field 1 did not solve (index index-4116.fits, field objects 1-10).
Field 1 did not solve (index index-4115.fits, field objects 1-10).
Field 1 did not solve (index index-4114.fits, field objects 1-10).
Field 1 did not solve (index index-4113.fits, field objects 1-10).
Field 1 did not solve (index index-4112.fits, field objects 1-10).
Field 1 did not solve (index index-4111.fits, field objects 1-10).
Field 1 did not solve (index index-4110.fits, field objects 1-10).
Field 1 did not solve (index index-4109.fits, field objects 1-10).
Field 1 did not solve (index index-4108.fits, field objects 1-10).
Field 1 did not solve (index index-4119.fits, field objects 11-20).
Field 1 did not solve (index index-4118.fits, field objects 11-20).
Field 1 did not solve (index index-4117.fits, field objects 11-20).
Field 1 did not solve (index index-4116.fits, field objects 11-20).
  log-odds ratio 232.057 (6.04278e+100), 30 match, 0 conflict, 97 distractors, 52 index.
  RA,Dec = (65.4639,37.9892), pixel scale 5.95799 arcsec/pix.
  Hit/miss:   Hit/miss: +++++-+++-+-++--+-+--++-----+-----++-----+--++---+---------+--++-+------------------+--------+------
Field 1: solved with index index-4115.fits.
Field 1 solved: writing to file ./out3296063.solved to indicate this.
Field: out3296063.xyls
Field center: (RA,Dec) = (65.470294, 37.990871) deg.
Field center: (RA H:M:S, Dec D:M:S) = (04:21:52.870, +37:59:27.136).
Field size: 15.7325 x 10.5334 degrees
Field rotation angle: up is -0.648939 degrees E of N
Field parity: neg

WCS keywords and Astrometry.net provenance markers have been successfully stripped from all HDUs in the file.
Opening FITS image file input.fits for reading...  done!
Creating new image file (wcs_input.fits)...  done!
done!
All done!
Keyword does not exist
Keyword has been changed to:
VAST001 = 'wcs_image_calibration.sh' / VaST script name
Keyword does not exist
Keyword has been changed to:
VAST002 = 'local   '           / ASTROMETRYNET_LOCAL_OR_REMOTE
Keyword does not exist
Keyword has been changed to:
VAST003 = 'local   '           / PLATE_SOLVE_SERVER
Keyword does not exist
Keyword has been changed to:
VAST004 = 'iteration01'        / astrometry.net run
Reading input file 1 of 1: "out3296063.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out3296063.axy"...
Only searching for solutions within 15.6583 degrees of RA,Dec (65.4713,37.9917)
Field 1 did not solve (index index-4116.fits, field objects 1-100).
  log-odds ratio 232.057 (6.04278e+100), 30 match, 0 conflict, 97 distractors, 52 index.
  RA,Dec = (65.4639,37.9892), pixel scale 5.95799 arcsec/pix.
  Hit/miss:   Hit/miss: +++++-+++-+-++--+-+--++-----+-----++-----+--++---+---------+--++-+------------------+--------+------
Field 1: solved with index index-4115.fits.
Field 1 solved: writing to file ./out3296063.solved to indicate this.
Field: out3296063.xyls
Field center: (RA,Dec) = (65.466899, 37.990814) deg.
Field center: (RA H:M:S, Dec D:M:S) = (04:21:52.056, +37:59:26.930).
Field size: 15.7097 x 10.5303 degrees
Field rotation angle: up is -0.644457 degrees E of N
Field parity: neg

WCS keywords and Astrometry.net provenance markers have been successfully stripped from all HDUs in the file.
Opening FITS image file input.fits for reading...  done!
Creating new image file (wcs_input.fits)...  done!
done!
All done!
Keyword does not exist
Keyword has been changed to:
VAST001 = 'wcs_image_calibration.sh' / VaST script name
Keyword does not exist
Keyword has been changed to:
VAST002 = 'local   '           / ASTROMETRYNET_LOCAL_OR_REMOTE
Keyword does not exist
Keyword has been changed to:
VAST003 = 'local   '           / PLATE_SOLVE_SERVER
Keyword does not exist
Keyword has been changed to:
VAST004 = 'iteration02'        / astrometry.net run
The field of view is large: we'll try to run Astromety.net code on the image itself rather than a star list
Reading input file "wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits"...
Found an existing WCS header, will try to verify it.
Extracting sources...
simplexy: found 22451 sources.
Solving...
Reading file "/data_ssd/NMW-TexasTech/workdir/vast_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/out3296063_image_verify.wP5Rmp/solution.axy"...
Verifying WCS using indices with quads of size [63.462, 951.334] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
  log-odds ratio 138.554 (1.4902e+60), 14 match, 0 conflict, 73 distractors, 15 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: -+---------+--+---++-----------+--------++---------------+--------------+-++---+------+(best)-------------
 --> log-odds 138.554
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 194.684 (3.55022e+84), 19 match, 0 conflict, 88 distractors, 21 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: -+-----+---+--+---++-+---+-----+--------++---------------+--------------+-++---+------+------------+
 --> log-odds 194.684
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 449.307 (1.35396e+195), 44 match, 0 conflict, 179 distractors, 52 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: -+-++--+-+-+--+---++-+--++-----+-++-+---++++-+-+-+-------+--------+-----++++---+-+----+--------+---+
 --> log-odds 449.307
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 791.244 (inf), 82 match, 0 conflict, 434 distractors, 96 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: ++-+++-+-+-++-+--+++++--+++-++-++++-+-+-++++-+-++++-----++-------+++--+-+++++--+-++---+--------+--++
 --> log-odds 791.244
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 1453.88 (inf), 169 match, 0 conflict, 1847 distractors, 185 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++-++-+--++++++++++++++++++++-+-++++-+-++++-----+++-+---++++--++++++++-++++---+-+------+--++
 --> log-odds 1453.88
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 2779.2 (inf), 346 match, 0 conflict, 4165 distractors, 371 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++-++++++++++++++++++++++++++-++++++++-++++++++++++++++-+++++++++++++++++++++-+-+++++-+++-++
 --> log-odds 2779.2
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 5091.93 (inf), 651 match, 0 conflict, 4234 distractors, 722 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++-++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-++++++++++++
 --> log-odds 5091.93
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 9291.64 (inf), 1264 match, 0 conflict, 6177 distractors, 1437 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++-++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-++++++++++++
 --> log-odds 9291.64
Verifying WCS using indices with quads of size [63.462, 951.334] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
  log-odds ratio 138.554 (1.4902e+60), 14 match, 0 conflict, 73 distractors, 15 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: -+---------+--+---++-----------+--------++---------------+--------------+-++---+------+(best)-------------
 --> log-odds 138.554
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 194.684 (3.55022e+84), 19 match, 0 conflict, 88 distractors, 21 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: -+-----+---+--+---++-+---+-----+--------++---------------+--------------+-++---+------+------------+
 --> log-odds 194.684
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 449.307 (1.35396e+195), 44 match, 0 conflict, 179 distractors, 52 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: -+-++--+-+-+--+---++-+--++-----+-++-+---++++-+-+-+-------+--------+-----++++---+-+----+--------+---+
 --> log-odds 449.307
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 791.244 (inf), 82 match, 0 conflict, 434 distractors, 96 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: ++-+++-+-+-++-+--+++++--+++-++-++++-+-+-++++-+-++++-----++-------+++--+-+++++--+-++---+--------+--++
 --> log-odds 791.244
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 1453.88 (inf), 169 match, 0 conflict, 1847 distractors, 185 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++-++-+--++++++++++++++++++++-+-++++-+-++++-----+++-+---++++--++++++++-++++---+-+------+--++
 --> log-odds 1453.88
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 2779.2 (inf), 346 match, 0 conflict, 4165 distractors, 371 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++-++++++++++++++++++++++++++-++++++++-++++++++++++++++-+++++++++++++++++++++-+-+++++-+++-++
 --> log-odds 2779.2
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 5091.93 (inf), 651 match, 0 conflict, 4234 distractors, 722 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++-++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-++++++++++++
 --> log-odds 5091.93
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 9291.64 (inf), 1264 match, 0 conflict, 6177 distractors, 1437 index.
  RA,Dec = (65.4659,37.99), pixel scale 5.96074 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++-++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-++++++++++++
 --> log-odds 9291.64
Got 16 solutions.
Field: wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
Field center: (RA,Dec) = (65.466781, 37.990427) deg.
Field center: (RA H:M:S, Dec D:M:S) = (04:21:52.028, +37:59:25.536).
Field size: 15.7084 x 10.5306 degrees
Field rotation angle: up is -0.643482 degrees E of N
Field parity: neg
Creating new FITS file "/data_ssd/NMW-TexasTech/workdir/vast_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/out3296063_image_verify.wP5Rmp/solution.new"...

renamed '/data_ssd/NMW-TexasTech/workdir/vast_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/out3296063_image_verify.wP5Rmp/solution.new' -> 'wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits'
Checking if the catalog wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits.wcscat corresponding to the image wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits alredy exist and is non-empty...
Catalog wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits.wcscat corresponding to the image wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits was not found.
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
verification OK: wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
Generating wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits.wcscat from image00003.cat
Catalog wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits.wcscat corresponding to the image wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits created.
verification OK: wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
verification OK: wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
Image size: 937.2'x624.1'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.86"/pix along the Y axis
Image center: 04:21:52.277 +37:59:28.55 J2000 4789.000 3195.000 

 ### Converting SExtractor-derived pixel positions to celestial coordinates using xy2sky from WCSTools ###
 ### Converted positions of 3799 stars ###
'wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits.wcscat' -> 'vast_debug_catalog_before_xy2sky_correction_3346250.cat.log'
'wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits.wcscat.xy2sky.R4yVrd' -> 'vast_debug_catalog_after_xy2sky_correction_3346250.cat.log'
The plate-solved (WCS-calibrated) image is saved to wcs_fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
###################################
# Check the image center offset between the reference and the blindly solved unmatched second-epoch image (pointing accuracy)
Reference image center 04:21:49.059 +37:59:50.85
Second-epoch image center 04:21:52.277 +37:59:28.55
Angular distance between the image centers 0.0122 deg.
###################################
The second-epoch image center is consistent with the reference image center (offset 0.0122 deg.) - the star matching failure is probably not a pointing problem
____ VaST output ____

--==VaST 1.0rc90==--

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

Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits is already a symlink and we do not allow symlinks on symlinks
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.fits is already a symlink and we do not allow symlinks on symlinks

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K)...  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/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.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 Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits catalog from cache
SExtractor catalog cache: restored Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.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/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.fits
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
The above guess is bb1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
The above guess is based on the non-default gain value specified in default.sex by user
ased on the non-default gain value specified in default.sex by user
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.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_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.2,6.2,5.6,6.8,7.4,8.0 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.2,6.2,5.6,6.8,7.4,8.0 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits


Done with SExtractor!

TIMING SExtractor: 2 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.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: 2025-12-23T06:55:19.5018393
Setting observation time using DATE-OBS keyword: 2025-12-23T06:55:19.5018393

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2025-12-23T06:55:19.501
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits
Exposure 20 sec, 23.12.2025 06:55:19.501 UTC = JD(UTC) 2461032.78853589 mid. exp.
The reference image star  9539.159    17.385 is rejected, see bad_region.lst
The reference image star  9442.662    13.637 is rejected, see bad_region.lst
The reference image star  8015.303    14.304 is rejected, see bad_region.lst
The reference image star  7793.551    14.870 is rejected, see bad_region.lst
The reference image star  7662.314    10.394 is rejected, see bad_region.lst
The reference image star  8636.199    13.153 is rejected, see bad_region.lst
The reference image star  7559.686    12.658 is rejected, see bad_region.lst
The reference image star  7612.140    12.208 is rejected, see bad_region.lst
The reference image star  8489.603     8.953 is rejected, see bad_region.lst
The reference image star  9237.069     5.215 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: 14431, (14430 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: 4141
 * rejected close to frame edge: 100
 * 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): 5
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.34
Detection limit from the magnitude-SNR relation= -7.3  (4.0 sigma detection)
The simple faintest star detection limit= -9.7
80 percent brightest stars detection limit= -10.5
Selected detection limit= -10.5
Final detection limit= -10.5 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.05.8 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
    12742 * detected, using  441/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.009008, number_of_ambiguous_matches=130 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=8424 inliers=8424 rms 0.94 -> 0.38 pix, max corner correction 4.7 pix] fraction_of_ambiguous_matches= 0.004851, number_of_ambiguous_matches=70 
8422 * matched, [CVPOLY iter 2: order=1 pairs=8422 inliers=8422 rms 0.26 -> 0.26 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.003049, number_of_ambiguous_matches=44 
8418 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=8418 inliers=8418 rms 0.14 -> 0.14 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.001455, number_of_ambiguous_matches=21 
8418 * matched (3rd iteration). Success!
  rotation [degrees] = -174.805
    12742 stars detected,  8418 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 7573, N_manually_selected_comparison_stars = 0
Using 7573 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 7573 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix -0.00000*Y_pix +0.02187
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 7561 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.31
    18755 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  204952 kB used, 239832 kB peak, 65261732 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.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: 2026-10-20T06:24:37.4988115
Setting observation time using DATE-OBS keyword: 2026-10-20T06:24:37.4988115

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-10-20T06:24:37.498
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
The star  7558.747    21.950 is rejected, see bad_region.lst
The star  7555.607    28.103 is rejected, see bad_region.lst
The star  7776.904    61.684 is rejected, see bad_region.lst
The star  9571.066    67.682 is rejected, see bad_region.lst
The star  8062.867    89.147 is rejected, see bad_region.lst
The star  7559.028   125.046 is rejected, see bad_region.lst
The star  7737.853   114.295 is rejected, see bad_region.lst
The star  7740.810   166.277 is rejected, see bad_region.lst
The star  9074.331   154.575 is rejected, see bad_region.lst
The star  7809.798   208.797 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 2327
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 1467
 * rejected close to frame edge: 4
 * 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): 1
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     2327 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=2318 inliers=2318 rms 0.87 -> 0.31 pix, max corner correction 2.7 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
2317 * matched, [CVPOLY iter 2: order=3 pairs=2317 inliers=2317 rms 0.15 -> 0.14 pix, max corner correction 0.5 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
2317 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=2317 inliers=2317 rms 0.14 -> 0.14 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
2317 * matched (3rd iteration). Success!
  rotation [degrees] = -177.491
     2327 stars detected,  2317 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1724, N_manually_selected_comparison_stars = 0
Using 1724 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 1526 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00015*X_pix +0.00013*Y_pix +0.43151
ERROR in magnitude calibration: fabs(lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 1526 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.72
 ERROR!!! Magnitude calibration failure. Dropping image. 
    18755 objects stored in memory (1000000 max.)
memory:  205040 kB used, 239832 kB peak, 65261732 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.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: 2026-10-20T06:25:17.0373714
Setting observation time using DATE-OBS keyword: 2026-10-20T06:25:17.0373714

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-10-20T06:25:17.037
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
The star  7780.116    60.956 is rejected, see bad_region.lst
The star  9573.769    67.154 is rejected, see bad_region.lst
The star  8066.162    88.528 is rejected, see bad_region.lst
The star  7562.176   124.190 is rejected, see bad_region.lst
The star  9077.180   153.891 is rejected, see bad_region.lst
The star  9210.737   145.993 is rejected, see bad_region.lst
The star  7743.998   165.600 is rejected, see bad_region.lst
The star  8931.520   158.527 is rejected, see bad_region.lst
The star  8524.288   184.055 is rejected, see bad_region.lst
The star  8581.754   180.220 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 1537
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 1230
 * rejected close to frame edge: 6
 * rejected as being too small (<1.6 pix): 0
 * rejected as being too large (>6.2 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 0
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     1537 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000053, number_of_ambiguous_matches=1 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=1512 inliers=1512 rms 1.95 -> 0.24 pix, max corner correction 3.9 pix] fraction_of_ambiguous_matches= 0.000053, number_of_ambiguous_matches=1 
1512 * matched, [CVPOLY iter 2: order=1 pairs=1512 inliers=1512 rms 0.17 -> 0.17 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.000053, number_of_ambiguous_matches=1 
1512 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=1512 inliers=1512 rms 0.17 -> 0.17 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000053, number_of_ambiguous_matches=1 
1512 * matched (3rd iteration). Success!
  rotation [degrees] = -177.515
     1537 stars detected,  1512 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 859, N_manually_selected_comparison_stars = 0
Using 859 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 770 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00014*X_pix +0.00015*Y_pix +0.34242
ERROR in magnitude calibration: fabs(lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 770 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.77
 ERROR!!! Magnitude calibration failure. Dropping image. 
    18755 objects stored in memory (1000000 max.)
memory:  204972 kB used, 239832 kB peak, 65261732 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 0 seconds
Done with measurements! =)

Total number of measurements 27173 (27173 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  1891 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  2525 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  1551 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for   847 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  1604 stars

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

Computing, please wait a bit
...................................................................................
vast_lightcurve_statistics.log: 8364 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)
_____________________
ERROR running VaST on the field Per-05-Q2b1x1 (less than 4 images processed)
exp_start= 23.12.2025 06:55:19.501  exp=   20.000  JD= 2461032.78853589  ap=  6.0  rotation=   0.000  *detected= 14431  *matched= 14431  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits
exp_start= 09.01.2026 02:03:57.693  exp=   20.000  JD= 2461049.58620015  ap=  5.8  rotation= -174.805  *detected= 12742  *matched=  8418  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.fits
exp_start= 20.10.2026 06:24:37.498  exp=   20.000  JD= 2461333.76721641  ap=  6.2  rotation= -177.491  *detected=  2327  *matched=  2317  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
exp_start= 20.10.2026 06:25:17.037  exp=   20.000  JD= 2461333.76767404  ap=  6.2  rotation= -177.515  *detected=  1537  *matched=  1512  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.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/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
  
Last  image: 2461333.76721641 20.10.2026 06:24:37.498 UTC
WARNING: VaST exited with code 1 on the field Per-05-Q2b1x1 as too few input images were matched to the reference image - wrong pointing? clouds? very bad focus?
____ VaST output ____

--==VaST 1.0rc90==--

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

Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits is already a symlink and we do not allow symlinks on symlinks
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.fits is already a symlink and we do not allow symlinks on symlinks

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K)...  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/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.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 Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits catalog from cache
SExtractor catalog cache: restored Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.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/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.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.
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1Waiting for thread 2 to finish...
_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits > image00003.cat.sex_log 2>&1
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
The above guess is based on the non-default gain value specified in default.sex by user
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.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_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.4,4.4,4.0,4.9,5.3,5.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.5,4.5,4.0,4.9,5.4,5.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits


Done with SExtractor!

TIMING SExtractor: 7 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/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.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: 2025-12-23T06:55:19.5018393
Setting observation time using DATE-OBS keyword: 2025-12-23T06:55:19.5018393

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2025-12-23T06:55:19.501
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits
Exposure 20 sec, 23.12.2025 06:55:19.501 UTC = JD(UTC) 2461032.78853589 mid. exp.
The reference image star  9384.569     1.103 is rejected, see bad_region.lst
The reference image star  7521.675     2.079 is rejected, see bad_region.lst
The reference image star  9186.441     3.172 is rejected, see bad_region.lst
The reference image star  7727.282     2.001 is rejected, see bad_region.lst
The reference image star  7893.706     1.952 is rejected, see bad_region.lst
The reference image star  8582.440     1.732 is rejected, see bad_region.lst
The reference image star  8632.896     1.645 is rejected, see bad_region.lst
The reference image star  8762.925     1.186 is rejected, see bad_region.lst
The reference image star  9352.585     1.534 is rejected, see bad_region.lst
The reference image star  8398.137     2.524 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: 113450, (113449 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 20
 * rejected inside rectangles defined in bad_region.lst: 23064
 * rejected close to frame edge: 630
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.5 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 117
 * 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: -7.01
Detection limit from the magnitude-SNR relation= -7.0  (4.0 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:    10.04.3 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 92
 * 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'.
    106553 * detected, using  469/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.015602, number_of_ambiguous_matches=1770 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=69238 inliers=69238 rms 0.92 -> 0.34 pix, max corner correction 4.8 pix] fraction_of_ambiguous_matches= 0.015522, number_of_ambiguous_matches=1761 
69254 * matched, [CVPOLY iter 2: order=1 pairs=69254 inliers=69254 rms 0.33 -> 0.33 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.015540, number_of_ambiguous_matches=1763 
69253 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=69253 inliers=69253 rms 0.33 -> 0.33 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.011230, number_of_ambiguous_matches=1274 
69216 * matched (3rd iteration). Success!
  rotation [degrees] = -174.816
    106553 stars detected, 69216 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 60631, N_manually_selected_comparison_stars = 0
Using 60631 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 60624 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00000*X_pix -0.00000*Y_pix +0.00184
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 54789 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -6.94
    150787 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  292176 kB used, 325712 kB peak, 65261732 kB available RAM
Total number of measurements 220003 (220003 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_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.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: 2026-10-20T06:24:37.4988115
Setting observation time using DATE-OBS keyword: 2026-10-20T06:24:37.4988115

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-10-20T06:24:37.498
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
The star  7558.754    21.937 is rejected, see bad_region.lst
The star  7909.693     8.927 is rejected, see bad_region.lst
The star  7658.504     3.199 is rejected, see bad_region.lst
The star  7555.565    28.163 is rejected, see bad_region.lst
The star  9547.606    22.637 is rejected, see bad_region.lst
The star  7564.173    30.627 is rejected, see bad_region.lst
The star  9512.404    27.106 is rejected, see bad_region.lst
The star  7718.620    34.182 is rejected, see bad_region.lst
The star  7626.025    45.648 is rejected, see bad_region.lst
The star  9406.037    42.255 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 23808
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 2
 * rejected inside rectangles defined in bad_region.lst: 8803
 * rejected close to frame edge: 39
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.5 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 65
 * 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'.
    23808 * detected, using  104/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000153, number_of_ambiguous_matches=23 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=23451 inliers=23451 rms 1.09 -> 0.27 pix, max corner correction 3.7 pix] fraction_of_ambiguous_matches= 0.000133, number_of_ambiguous_matches=20 
23455 * matched, [CVPOLY iter 2: order=1 pairs=23455 inliers=23455 rms 0.25 -> 0.25 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000133, number_of_ambiguous_matches=20 
23455 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=23455 inliers=23455 rms 0.25 -> 0.25 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000133, number_of_ambiguous_matches=20 
23454 * matched (3rd iteration). Success!
  rotation [degrees] = -177.508
    23808 stars detected, 23454 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 17420, N_manually_selected_comparison_stars = 0
Using 17420 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 14955 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00014*X_pix +0.00013*Y_pix +0.35044
ERROR in magnitude calibration: fabs(lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 14955 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.23
 ERROR!!! Magnitude calibration failure. Dropping image. 
    150787 objects stored in memory (1000000 max.)
memory:  448268 kB used, 505176 kB peak, 65261732 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.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: 2026-10-20T06:25:17.0373714
Setting observation time using DATE-OBS keyword: 2026-10-20T06:25:17.0373714

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-10-20T06:25:17.037
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
The star  7913.578     8.891 is rejected, see bad_region.lst
The star  8687.155    15.723 is rejected, see bad_region.lst
The star  9040.605    16.922 is rejected, see bad_region.lst
The star  9550.591    21.933 is rejected, see bad_region.lst
The star  9515.981    26.245 is rejected, see bad_region.lst
The star  7561.890    21.057 is rejected, see bad_region.lst
The star  7558.329    27.171 is rejected, see bad_region.lst
The star  9356.035    37.788 is rejected, see bad_region.lst
The star  9409.234    41.577 is rejected, see bad_region.lst
The star  9343.349    37.588 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 16436
 * rejected as having no flux measurement: 1
 * rejected as having SNR<3.0: 1
 * rejected inside rectangles defined in bad_region.lst: 8148
 * rejected close to frame edge: 47
 * 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): 40
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
    16436 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000086, number_of_ambiguous_matches=13 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=15948 inliers=15948 rms 1.19 -> 0.30 pix, max corner correction 3.0 pix] fraction_of_ambiguous_matches= 0.000060, number_of_ambiguous_matches=9 
15949 * matched, [CVPOLY iter 2: order=3 pairs=15949 inliers=15949 rms 0.26 -> 0.26 pix, max corner correction 0.8 pix] fraction_of_ambiguous_matches= 0.000060, number_of_ambiguous_matches=9 
15949 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=15949 inliers=15949 rms 0.26 -> 0.26 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000060, number_of_ambiguous_matches=9 
15948 * matched (3rd iteration). Success!
  rotation [degrees] = -177.471
    16436 stars detected, 15948 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 9824, N_manually_selected_comparison_stars = 0
Using 9824 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 7888 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00013*X_pix +0.00015*Y_pix +0.26409
ERROR in magnitude calibration: fabs(lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 7888 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.27
 ERROR!!! Magnitude calibration failure. Dropping image. 
    150787 objects stored in memory (1000000 max.)
memory:  448268 kB used, 505176 kB peak, 65261732 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 3 seconds
Done with measurements! =)

Total number of measurements 220003 (0 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 0 seconds
The lightcurve files have been written, freeing up more memory...
Creating vast_image_details.log ... 

Writing summary file: vast_summary.log ...  OK
Selecting the best aperture for each source
Aperture with index 0 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for 16793 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 17352 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  8713 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  8298 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 18060 stars

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

Computing, please wait a bit
.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 68952 objects, the longest string is 386 bytes.
Allocating memory for resorting the file.



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



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

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

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

Low percentage of matched images - we'll declare this an unsuccessful VaST run (exit code 1)
_____________________
ERROR running VaST on the field Per-05-Q2b1x1 (less than 4 images processed)
exp_start= 23.12.2025 06:55:19.501  exp=   20.000  JD= 2461032.78853589  ap=  4.5  rotation=   0.000  *detected= 113450  *matched= 113450  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2025-12-23_00-55-19_20.00sec_-15.00C_LIGHT_0342.fits
exp_start= 09.01.2026 02:03:57.693  exp=   20.000  JD= 2461049.58620015  ap=  4.3  rotation= -174.816  *detected= 106553  *matched= 69216  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Per-05-Q2b1x1_2026-01-08_20-03-57_20.00sec_-15.00C_LIGHT_0025.fits
exp_start= 20.10.2026 06:24:37.498  exp=   20.000  JD= 2461333.76721641  ap=  4.5  rotation= -177.508  *detected= 23808  *matched= 23454  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-24-37_20.00sec_-0.00C_LIGHT_0083.fits
exp_start= 20.10.2026 06:25:17.037  exp=   20.000  JD= 2461333.76767404  ap=  4.4  rotation= -177.471  *detected= 16436  *matched= 15948  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-10-20_CI_Per-05-Q2b1x1_013937_TTUQ2b1x1_3289359_iewyp64K/fd_Per-05-Q2b1x1_2026-10-20_01-25-17_20.00sec_-0.00C_LIGHT_0084.fits
########### Completed Per-05-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: Tue Oct 20 01:41:36 CDT 2026
=======================================
TIMING SExtractor: 2 seconds
TIMING matching_and_photometry: 0 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 1 seconds
TIMING SExtractor: 7 seconds
TIMING matching_and_photometry: 3 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 2 seconds
FIELD_Per-05-Q2b1x1: 56s (0.93 min)
=======================================
TOTAL_RUNTIME: 59s (0.98 min)
Finished: Tue Oct 20 01:42:35 CDT 2026