FITS images used in this processing run:

Field Dra-04-Q1b1x1 reference image: Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits
Field Dra-04-Q1b1x1 reference image: Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.fits
Field Dra-04-Q1b1x1 second-epoch image: Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
Field Dra-04-Q1b1x1 second-epoch image: Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.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-1 135mm f/2.2 telephoto lens + QHY600M CMOS
ASTCHECK_ASTEROID_SEARCH_RADIUS_ARCSEC= 
BAD_REGION_FILE= /var/www/nmw_calibration/TTUQ1b1x1/TTUQ1_bad_region.lst
CAMERA_SETTINGS= TTUQ1b1x1
CHECK_POINTING_ACCURACY= yes
DARK_FRAMES_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ1b1x1/darks
EXCLUSION_LIST= ../exclusion_list_TTUQ1.txt
FILTER_BAD_IMG__MAX_APERTURE_STAR_SIZE_PIX= 12.5
FILTER_BAD_IMG__MAX_ELONGATION_AminusB_PIX= 0.55
FILTER_BAD_IMG__MIN_APERTURE_STAR_SIZE_PIX= 2.0
FILTER_BRIGHT_MAG_CUTOFF_TRANSIENT_SEARCH= -5
FILTER_FAINT_MAG_CUTOFF_TRANSIENT_SEARCH= 15.5
FLAT_FIELD_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ1b1x1/flats
FRAME_EDGE_OFFSET_PIX= 100
GAIA_BAND_FOR_CATALOGED_SOURCE_CHECK= 
MAX_NEW_TO_REF_MEAN_IMG_VALUE_RATIO= 100
DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK= yes
MAX_NEW_IMG_MEAN_VALUE= 25000
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS= 0.18
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS_SOFT_LIMIT= 0.12
MPC_CODE= V36
NMW_CALIBRATION= /var/www/nmw_calibration
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_HARD_LIMIT= 10000
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_SOFT_LIMIT= 8000
OMP_NUM_THREADS= 3
ONLINE_MPCHECKER_BUTTON_ASTEROID_SEARCH_RADIUS_ARCMIN= 
PHOTOMETRIC_CALIBRATION= 
REQUIRE_PIX_SHIFT_BETWEEN_IMAGES_FOR_TRANSIENT_CANDIDATES= yes
SEXTRACTOR_CONFIG_BRIGHTSTARPASS= default.sex.telephoto_lens_onlybrightstars_v1
SEXTRACTOR_CONFIG_FILES= default.sex.telephoto_lens_onlybrightstars_v1 default.sex.telephoto_lens_vSTL
STARMATCH_RADIUS_PIX= 5
SYSREM_ITERATIONS= 0
TELESCOP= 
TELESCOP_NAME_KNOWN_TO_VaST_FOR_FOV_DETERMINATION= 
UCAC5_PLATESOLVE_ITERATIONS= 2
FPACK_FULLY_CALIBRATED_IMAGE= no
#######################################
HOSTNAME= tau
USER= 
HOME= 
#######################################
SExtractor catalog cache: enabled, directory /data_ssd/NMW-TexasTech/vast_sextractor_cache
Reference image directory is set to /data_ssd/NMW-TexasTech/reference_imgs
VIZIER_SITE=vizier.nao.ac.jp
GAIA_DR2_CLIENT=vizquery (lib/vizquery -> VizieR vizier.nao.ac.jp)
INFO: MAKE_PNG_PLOTS is set to yes
FITS_FILE_EXT=fits
CALIBRATION_STATUS_PREFIX=
Fields in the data directory: 
Dra-04-Q1b1x1
#######################################
########### Starting Dra-04-Q1b1x1 ###########
Processing Dra-04-Q1b1x1
server tau has sufficient free disk space available: 651247 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 651247 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.png' -> 'transient_report/Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits_preview.png'

Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits


renamed 'Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.png' -> 'transient_report/Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits_preview.png'

Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.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= 424.1538
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 523.5073
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1423.9324
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 332.0005
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1427.7806
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 323.7438
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 3.35711
INFO:                  SECOND_EPOCH__SD_ratio= 0.026
INFO: the new-to-reference mean image value ratio check is disabled (DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK=yes) - expected with a background-subtracted reference image
----------------------------------------------
Calibration settings: DARK_FRAMES_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ1b1x1/darks FLAT_FIELD_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ1b1x1/flats
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     24.2900009155273 / [degC] Focuser temperature
AMBTEMP =                 23.1 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-08-22T05:05:41.9671254' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-22T10:05:41.9671254' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =      61274.420624618 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-22T10:05:51.8689511' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =      61274.420739213 / Modified Julian Date of averaged midpoint" status=0
Record 16: "XBINNING=                    1 / X axis binning factor" status=0
Record 17: "YBINNING=                    1 / Y axis binning factor" status=0
Record 18: "GAIN    =                   30 / Sensor gain" status=0
Record 19: "OFFSET  =                   30 / Sensor gain offset" status=0
Record 20: "XPIXSZ  =                 3.76 / [um] Pixel X axis size" status=0
Record 21: "YPIXSZ  =                 3.76 / [um] Pixel Y axis size" status=0
Record 22: "INSTRUME= 'QHY600M'            / Imaging instrument name" status=0
Record 23: "CAMERAID= 'QHY600M-33d3d743814b8b447' / Imaging instrument identifier" status=0
Record 24: "SET-TEMP=                  0.0 / [degC] CCD temperature setpoint" status=0
Record 25: "CCD-TEMP=                 -0.0 / [degC] CCD temperature" status=0
Record 26: "READOUTM= '2CMS-0'             / Sensor readout mode" status=0
Record 27: "USBLIMIT=                   50 / Camera-specific USB setting" status=0
Record 28: "TELESCOP= 'QHY600M-TTU1'       / Name of telescope" status=0
Record 29: "FOCALLEN=                135.0 / [mm] Focal length" status=0
Record 30: "FOCRATIO=                  2.2 / Focal ratio" status=0
Record 31: "RA      =     251.998621375938 / [deg] RA of telescope" status=0
Record 32: "DEC     =     69.9998023728701 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     20.1927777777778 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     343.352222222222 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.87605743778654 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1015.0 / [m] Observation site elevation" status=0
Record 38: "SITELAT =     33.7480555555556 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=    -101.958333333333 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Dra-04'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '16 48 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+70 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  =                29507 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                29507 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     24.2900009155273 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     24.2900009155273 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 10.5 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 45.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               903.69 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 23.1 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 72.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             5.400432 / [kph] Wind gust" status=0
Record 61: "WINDSPD =              4.00032 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/d_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits :)

Spent 0.618800 seconds 
renamed 'mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ1b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/d_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-08-12_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 36313.440328
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits :)


No overscan detected - all values seem high! (left_median=23343.0, right_median=27331.5)
renamed 'mff_TTUQ1b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     24.2900009155273 / [degC] Focuser temperature
AMBTEMP =                 23.1 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-08-22T05:06:50.2232867' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-22T10:06:50.2232867' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61274.4214146179 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-22T10:07:00.1272201' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61274.4215292479 / Modified Julian Date of averaged midpoint" status=0
Record 16: "XBINNING=                    1 / X axis binning factor" status=0
Record 17: "YBINNING=                    1 / Y axis binning factor" status=0
Record 18: "GAIN    =                   30 / Sensor gain" status=0
Record 19: "OFFSET  =                   30 / Sensor gain offset" status=0
Record 20: "XPIXSZ  =                 3.76 / [um] Pixel X axis size" status=0
Record 21: "YPIXSZ  =                 3.76 / [um] Pixel Y axis size" status=0
Record 22: "INSTRUME= 'QHY600M'            / Imaging instrument name" status=0
Record 23: "CAMERAID= 'QHY600M-33d3d743814b8b447' / Imaging instrument identifier" status=0
Record 24: "SET-TEMP=                  0.0 / [degC] CCD temperature setpoint" status=0
Record 25: "CCD-TEMP=                 -0.0 / [degC] CCD temperature" status=0
Record 26: "READOUTM= '2CMS-0'             / Sensor readout mode" status=0
Record 27: "USBLIMIT=                   50 / Camera-specific USB setting" status=0
Record 28: "TELESCOP= 'QHY600M-TTU1'       / Name of telescope" status=0
Record 29: "FOCALLEN=                135.0 / [mm] Focal length" status=0
Record 30: "FOCRATIO=                  2.2 / Focal ratio" status=0
Record 31: "RA      =     251.998621591613 / [deg] RA of telescope" status=0
Record 32: "DEC     =     69.9998023624014 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     20.1252777777778 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     343.426944444444 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     2.88514396019968 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1015.0 / [m] Observation site elevation" status=0
Record 38: "SITELAT =     33.7480555555556 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=    -101.958333333333 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Dra-04'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '16 48 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+70 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  =                29507 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                29507 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     24.2900009155273 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     24.2900009155273 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 10.5 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 45.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               903.69 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 23.1 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 72.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             5.400432 / [kph] Wind gust" status=0
Record 61: "WINDSPD =              4.00032 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ1b1x1/darks/mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/d_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits :)

Spent 0.625072 seconds 
renamed 'mdark_TTUQ1b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ1b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/d_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ1b1x1/flats/mff_TTUQ1b1x1_2026-08-12_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 36313.440328
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits :)


No overscan detected - all values seem high! (left_median=23343.0, right_median=27331.5)
renamed 'mff_TTUQ1b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
Dark frame used to calibrate the second-epoch images:



Flat field used to calibrate the second-epoch images:



after the calibration attempt:
SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
Previews of the CALIBRATED second-epoch images:


fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits



fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits




Updating neverexclude_list.txt
'/var/www/nmw_calibration/neverexclude_list.txt' -> './neverexclude_list.txt'
Choosing bad regions list
'/var/www/nmw_calibration/TTUQ1b1x1/TTUQ1_bad_region.lst' -> 'bad_region.lst'
wait
*------ default.sex.telephoto_lens_onlybrightstars_v1 ------*
'default.sex.telephoto_lens_onlybrightstars_v1' -> 'default.sex'
Starting VaST with default.sex.telephoto_lens_onlybrightstars_v1

  ./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
  
Last  image: 2461274.92074036 22.08.2026 10:05:41.967 UTC
WARNING: VaST exited with code 1 on the field Dra-04-Q1b1x1 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_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits to check the telescope pointing
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.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_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
WCS_IMAGE_NAME=wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
Field of view for the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.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_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.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_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/lib/make_outxyls_for_astrometric_calibration found 1970 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_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.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: "out636345.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out636345.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).
  log-odds ratio 31.5979 (5.28168e+13), 4 match, 0 conflict, 9 distractors, 22 index.
  RA,Dec = (252.033,70.021), pixel scale 5.98135 arcsec/pix.
  Hit/miss:   Hit/miss: ----+-+-+---+(best)---------------+-----------------+-----------------------------------------------------
Field 1: solved with index index-4116.fits.
Field 1 solved: writing to file ./out636345.solved to indicate this.
Field: out636345.xyls
Field center: (RA,Dec) = (252.036883, 70.017412) deg.
Field center: (RA H:M:S, Dec D:M:S) = (16:48:08.852, +70:01:02.683).
Field size: 15.8087 x 10.5883 degrees
Field rotation angle: up is -176.012 degrees E of N
Field parity: neg

Inserting WCS header...  '/data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits' -> 'fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits'
WCS keywords and Astrometry.net provenance markers have been successfully stripped from all HDUs in the file.
-rw-r--r-- 1 apache apache 117M Aug 22 05:12 fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
-rw-r--r-- 1 apache apache  12K Aug 22 05:12 out636345.wcs
Inserting WCS header (1st iteration local)...  Opening FITS image file fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits for reading...  done!
Creating new image file (wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits)...  done!
done!
All done!
done
The WCS header appears to be added with no errors in /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits (fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits)
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: "out636345.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out636345.axy"...
Only searching for solutions within 15.71 degrees of RA,Dec (252.034,70.0166)
  log-odds ratio 31.5979 (5.28168e+13), 4 match, 0 conflict, 9 distractors, 22 index.
  RA,Dec = (252.033,70.021), pixel scale 5.98135 arcsec/pix.
  Hit/miss:   Hit/miss: ----+-+-+---+(best)---------------+-----------------+-----------------------------------------------------
Field 1: solved with index index-4116.fits.
Field 1 solved: writing to file ./out636345.solved to indicate this.
Field: out636345.xyls
Field center: (RA,Dec) = (252.033049, 70.015522) deg.
Field center: (RA H:M:S, Dec D:M:S) = (16:48:07.932, +70:00:55.881).
Field size: 15.7829 x 10.5876 degrees
Field rotation angle: up is -176.01 degrees E of N
Field parity: neg

WCS keywords and Astrometry.net provenance markers have been successfully stripped from all HDUs in the file.
-rw-r--r-- 1 apache apache 117M Aug 22 05:12 fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
-rw-r--r-- 1 apache apache  12K Aug 22 05:12 out636345.wcs
Inserting WCS header (2nd iteration local)...  Opening FITS image file fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits for reading...  done!
Creating new image file (wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits)...  done!
done!
All done!
The WCS header appears to be added with no errors.
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_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits"...
Found an existing WCS header, will try to verify it.
Extracting sources...
simplexy: found 12809 sources.
Solving...
Reading file "./wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.axy"...
Verifying WCS using indices with quads of size [63.7736, 956.005] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
  log-odds ratio 128.885 (9.42311e+55), 14 match, 1 conflict, 130 distractors, 14 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: -+-----+---+-------+------+----------+----+--+----+------+------+c----------------------------------
 --> log-odds 128.885
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 220.391 (5.18091e+95), 22 match, 0 conflict, 203 distractors, 22 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: -+---+-+---++------+-+----+----------+----++-+----+------+------++-----------+-----------+----------
 --> log-odds 220.391
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 475.598 (3.54452e+206), 46 match, 0 conflict, 187 distractors, 46 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: -+-+-++++-+++++--+++++++--+-----+---++++--++++-+--+------+-----+++-----------+--+--+-----+----------
 --> log-odds 475.598
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 912.439 (inf), 92 match, 0 conflict, 371 distractors, 92 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: -+-++++++-+++++-++++++++--+++++++--+++++--+++++++-+-++--++----++++---+++-+-++++++--+--+++++----+----
 --> log-odds 912.439
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 1703.1 (inf), 182 match, 0 conflict, 473 distractors, 183 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: -++++++++-+++++++++++++++++++++++++++++++-+++++++++++++-+++-++++++++-++++++++++++--+++++++-++++++++-
 --> log-odds 1703.1
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 3227.32 (inf), 372 match, 0 conflict, 1546 distractors, 374 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++++++++++++++++++++++++++-++++++++++++++++++++++++++++++++++++++++++++
 --> log-odds 3227.32
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 5867.73 (inf), 724 match, 0 conflict, 1435 distractors, 729 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++++++++++++++++++++++++++-++++++++++++++++++++++++++++++++++++++++++++
 --> log-odds 5867.73
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 10758.7 (inf), 1444 match, 1 conflict, 3233 distractors, 1458 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++++++++++++++++++++++++++-++++++++++++++++++++++++++++++++++++++++++++
 --> log-odds 10758.7
Verifying WCS using indices with quads of size [63.7736, 956.005] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
  log-odds ratio 128.885 (9.42311e+55), 14 match, 1 conflict, 130 distractors, 14 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: -+-----+---+-------+------+----------+----+--+----+------+------+c----------------------------------
 --> log-odds 128.885
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 220.391 (5.18091e+95), 22 match, 0 conflict, 203 distractors, 22 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: -+---+-+---++------+-+----+----------+----++-+----+------+------++-----------+-----------+----------
 --> log-odds 220.391
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 475.598 (3.54452e+206), 46 match, 0 conflict, 187 distractors, 46 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: -+-+-++++-+++++--+++++++--+-----+---++++--++++-+--+------+-----+++-----------+--+--+-----+----------
 --> log-odds 475.598
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 912.439 (inf), 92 match, 0 conflict, 371 distractors, 92 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: -+-++++++-+++++-++++++++--+++++++--+++++--+++++++-+-++--++----++++---+++-+-++++++--+--+++++----+----
 --> log-odds 912.439
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 1703.1 (inf), 182 match, 0 conflict, 473 distractors, 183 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: -++++++++-+++++++++++++++++++++++++++++++-+++++++++++++-+++-++++++++-++++++++++++--+++++++-++++++++-
 --> log-odds 1703.1
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 3227.32 (inf), 372 match, 0 conflict, 1546 distractors, 374 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++++++++++++++++++++++++++-++++++++++++++++++++++++++++++++++++++++++++
 --> log-odds 3227.32
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 5867.73 (inf), 724 match, 0 conflict, 1435 distractors, 729 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++++++++++++++++++++++++++-++++++++++++++++++++++++++++++++++++++++++++
 --> log-odds 5867.73
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 10758.7 (inf), 1444 match, 1 conflict, 3233 distractors, 1458 index.
  RA,Dec = (252.036,70.0163), pixel scale 5.99001 arcsec/pix.
  Hit/miss:   Hit/miss: +++++++++++++++++++++++++++++++++++++++++++++++++++++++-++++++++++++++++++++++++++++++++++++++++++++
 --> log-odds 10758.7
Got 16 solutions.
Field: wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
Field center: (RA,Dec) = (252.030605, 70.016878) deg.
Field center: (RA H:M:S, Dec D:M:S) = (16:48:07.345, +70:01:00.762).
Field size: 15.7824 x 10.5842 degrees
Field rotation angle: up is -176.008 degrees E of N
Field parity: neg
Creating new FITS file "./wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.new"...

renamed 'wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.new' -> 'wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits'
Checking if the catalog wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits.wcscat corresponding to the image wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits alredy exist and is non-empty...
Catalog wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits.wcscat corresponding to the image wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits was not found.
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
verification OK: wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
Generating wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits.wcscat from image00003.cat
Catalog wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits.wcscat corresponding to the image wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits created.
verification OK: wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
verification OK: wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
Image size: 941.8'x627.1'  15.7(deg)x10.5(deg)  9576x6388 pix
Image scale: 5.90"/pix along the X axis and 5.89"/pix along the Y axis
Image center: 16:48:06.721 +70:00:57.98 J2000 4789.000 3195.000 

 ### Converting SExtractor-derived pixel positions to celestial coordinates using xy2sky from WCSTools ###
 ### Converted positions of 1991 stars ###
'wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits.wcscat' -> 'vast_debug_catalog_before_xy2sky_correction.cat.log'
'/data_ssd/NMW-TexasTech/workdir/vast_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/correct_sextractor_wcs_catalog_usingxy2sky652641.tmp' -> 'vast_debug_catalog_after_xy2sky_correction.cat.log'
The plate-solved (WCS-calibrated) image is saved to wcs_fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
###################################
# Check the image center offset between the reference and the blindly solved unmatched second-epoch image (pointing accuracy)
Reference image center 16:47:55.522 +70:01:38.12
Second-epoch image center 16:48:06.721 +70:00:57.98
Angular distance between the image centers 0.0195 deg.
###################################
The second-epoch image center is consistent with the reference image center (offset 0.0195 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/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.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/Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.fits is already a symlink and we do not allow symlinks on symlinks

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7)...  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/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits 


Preparing to process 4 input FITS images...


######## Forcing special settings for the transient detection ########
transient search mode: disabling the mag-size filter as it should be switched off when running a transient search!
transient search mode: disabling the bad image filter as it will not help during the transient search!
transient search mode: will not try to gues image saturation limit
transient search mode: no UTC-to-TT time system conversion will be performed!!!
transient search mode: setting the maximum acceptable SExtractor flag to 3
transient search mode: disabling rejectin of images with elliptical stars
transient search mode: not discarding large sources
################
Excluding image region:   190.0  1039.0   192.0  1041.0  (defined in bad_region.lst)
Excluding image region:   226.0  1548.0   228.0  1550.0  (defined in bad_region.lst)
Excluding image region:   351.0  1875.0   353.0  1877.0  (defined in bad_region.lst)
Excluding image region:   501.0  5912.0   503.0  5914.0  (defined in bad_region.lst)
Excluding image region:   638.0  5545.0   640.0  5547.0  (defined in bad_region.lst)
Excluding image region:   724.0  2731.0   726.0  2733.0  (defined in bad_region.lst)
Excluding image region:   883.0  1376.0   885.0  1378.0  (defined in bad_region.lst)
Excluding image region:   901.0  3972.0   903.0  3974.0  (defined in bad_region.lst)
Excluding image region:  1151.0   918.0  1153.0   920.0  (defined in bad_region.lst)
Excluding image region:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions  (defined in bad_region.lst).
Setting the fixed star match radius of 5.00 pix
We have 4 images to process.
SExtractor catalog cache: restored Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits catalog from cache
SExtractor catalog cache: restored Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.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/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.fits
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
Excluding image region:   190.0  1039.0   192.0  1041.0  (defined in bad_region.lst)
Excluding image region:   226.0  1548.0   228.0  1550.0  (defined in bad_region.lst)
Excluding image region:   351.0  1875.0   353.0  1877.0  (defined in bad_region.lst)
Excluding image region:   501.0  5912.0   503.0  5914.0  (defined in bad_region.lst)
Excluding image region:   638.0  5545.0   640.0  5547.0  (defined in bad_region.lst)
Excluding image region:   724.0  2731.0   726.0  2733.0  (defined in bad_region.lst)
Excluding image region:   883.0  1376.0   885.0  1378.0  (defined in bad_region.lst)
Excluding image region:   901.0  3972.0   903.0  3974.0  (defined in bad_region.lst)
Excluding image region:  1151.0   918.0  1153.0   920.0  (defined in bad_region.lst)
Excluding image region:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits > image00003.cat.sex_log 2>&1
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
The above guess is based on the non-default gain value specified in default.sex by user
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
Excluding image region:   190.0  1039.0   192.0  1041.0  (defined in bad_region.lst)
Excluding image region:   226.0  1548.0   228.0  1550.0  (defined in bad_region.lst)
Excluding image region:   351.0  1875.0   353.0  1877.0  (defined in bad_region.lst)
Excluding image region:   501.0  5912.0   503.0  5914.0  (defined in bad_region.lst)
Excluding image region:   638.0  5545.0   640.0  5547.0  (defined in bad_region.lst)
Excluding image region:   724.0  2731.0   726.0  2733.0  (defined in bad_region.lst)
Excluding image region:   883.0  1376.0   885.0  1378.0  (defined in bad_region.lst)
Excluding image region:   901.0  3972.0   903.0  3974.0  (defined in bad_region.lst)
Excluding image region:  1151.0   918.0  1153.0   920.0  (defined in bad_region.lst)
Excluding image region:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 5.7,5.7,5.1,6.3,6.9,7.4 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 5.7,5.7,5.1,6.3,6.8,7.4 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.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/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-06-21T07:08:37.4422263
Setting observation time using DATE-OBS keyword: 2026-06-21T07:08:37.4422263

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-06-21T07:08:37.442
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits
Exposure 20 sec, 21.06.2026 07:08:37.442 UTC = JD(UTC) 2461212.79777132 mid. exp.
The reference image star  1500.682  5327.902 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 10202, (10202 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: 1
 * rejected close to frame edge: 50
 * rejected as being too small (<1.6 pix): 0
 * rejected as being too large (>6.5 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): 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'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.45
Detection limit from the magnitude-SNR relation= -7.4  (5.0 sigma detection)
The simple faintest star detection limit= -9.6
80 percent brightest stars detection limit= -10.3
Selected detection limit= -10.3
Final detection limit= -10.3 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.06.4 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 5
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     9662 * detected, using  473/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.006567, number_of_ambiguous_matches=67 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=9347 inliers=9347 rms 0.23 -> 0.22 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.003627, number_of_ambiguous_matches=37 
9345 * matched, [CVPOLY iter 2: order=1 pairs=9345 inliers=9345 rms 0.14 -> 0.14 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.002647, number_of_ambiguous_matches=27 
9345 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=9345 inliers=9345 rms 0.14 -> 0.14 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.001666, number_of_ambiguous_matches=17 
9344 * matched (3rd iteration). Success!
  rotation [degrees] =   0.062
     9662 stars detected,  9344 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 8724, N_manually_selected_comparison_stars = 0
Using 8724 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 8723 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00003*X_pix -0.00001*Y_pix -0.09765
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 8706 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.41
    10520 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  201656 kB used, 235560 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-08-22T10:05:41.9671254
Setting observation time using DATE-OBS keyword: 2026-08-22T10:05:41.9671254

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-22T10:05:41.967
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
SExtractor output filtering results:
 * passed selection: 1980
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 0
 * rejected close to frame edge: 11
 * rejected as being too small (<1.4 pix): 0
 * rejected as being too large (>5.7 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
     1980 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=1939 inliers=1939 rms 0.95 -> 0.17 pix, max corner correction 4.5 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1939 * matched, [CVPOLY iter 2: order=1 pairs=1939 inliers=1939 rms 0.16 -> 0.16 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1939 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=1939 inliers=1939 rms 0.16 -> 0.16 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 
1939 * matched (3rd iteration). Success!
  rotation [degrees] =  -1.983
     1980 stars detected,  1939 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1548, N_manually_selected_comparison_stars = 0
Using 1548 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 1426 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00018*X_pix +0.00008*Y_pix -0.71696
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 1426 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.74
 ERROR!!! Magnitude calibration failure. Dropping image. 
    10520 objects stored in memory (1000000 max.)
memory:  201788 kB used, 235560 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-08-22T10:06:50.2232867
Setting observation time using DATE-OBS keyword: 2026-08-22T10:06:50.2232867

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-22T10:06:50.223
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
The star  1200.530  1170.783 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 1877
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 1
 * rejected close to frame edge: 16
 * rejected as being too small (<1.4 pix): 0
 * rejected as being too large (>5.7 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
     1877 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000095, number_of_ambiguous_matches=1 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=1836 inliers=1836 rms 0.98 -> 0.17 pix, max corner correction 5.4 pix] fraction_of_ambiguous_matches= 0.000095, number_of_ambiguous_matches=1 
1836 * matched, [CVPOLY iter 2: order=1 pairs=1836 inliers=1836 rms 0.17 -> 0.17 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000095, number_of_ambiguous_matches=1 
1836 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=1836 inliers=1836 rms 0.17 -> 0.17 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000095, number_of_ambiguous_matches=1 
1836 * matched (3rd iteration). Success!
  rotation [degrees] =  -1.986
     1877 stars detected,  1836 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 1450, N_manually_selected_comparison_stars = 0
Using 1450 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 1369 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00017*X_pix +0.00007*Y_pix -0.68894
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 1369 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.74
 ERROR!!! Magnitude calibration failure. Dropping image. 
    10520 objects stored in memory (1000000 max.)
memory:  201788 kB used, 235560 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 0 seconds
Done with measurements! =)

Total number of measurements 19864 (19864 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  2969 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  2468 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for   905 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  1256 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  1746 stars

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

Computing, please wait a bit
............................................................................................
vast_lightcurve_statistics.log: 9283 objects, the longest string is 387 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 Dra-04-Q1b1x1 (less than 4 images processed)
exp_start= 21.06.2026 07:08:37.442  exp=   20.000  JD= 2461212.79777132  ap=  6.5  rotation=   0.000  *detected= 10202  *matched= 10202  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits
exp_start= 18.07.2026 05:37:07.116  exp=   20.000  JD= 2461239.73422588  ap=  6.4  rotation=   0.062  *detected=  9662  *matched=  9344  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.fits
exp_start= 22.08.2026 10:05:41.967  exp=   20.000  JD= 2461274.92074036  ap=  5.7  rotation=  -1.983  *detected=  1980  *matched=  1939  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
exp_start= 22.08.2026 10:06:50.223  exp=   20.000  JD= 2461274.92153036  ap=  5.7  rotation=  -1.986  *detected=  1877  *matched=  1836  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.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/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
  
Last  image: 2461274.92074036 22.08.2026 10:05:41.967 UTC
WARNING: VaST exited with code 1 on the field Dra-04-Q1b1x1 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/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.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/Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.fits is already a symlink and we do not allow symlinks on symlinks

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7)...  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/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits 


Preparing to process 4 input FITS images...


######## Forcing special settings for the transient detection ########
transient search mode: disabling the mag-size filter as it should be switched off when running a transient search!
transient search mode: disabling the bad image filter as it will not help during the transient search!
transient search mode: will not try to gues image saturation limit
transient search mode: no UTC-to-TT time system conversion will be performed!!!
transient search mode: setting the maximum acceptable SExtractor flag to 3
transient search mode: disabling rejectin of images with elliptical stars
transient search mode: not discarding large sources
################
Excluding image region:   190.0  1039.0   192.0  1041.0  (defined in bad_region.lst)
Excluding image region:   226.0  1548.0   228.0  1550.0  (defined in bad_region.lst)
Excluding image region:   351.0  1875.0   353.0  1877.0  (defined in bad_region.lst)
Excluding image region:   501.0  5912.0   503.0  5914.0  (defined in bad_region.lst)
Excluding image region:   638.0  5545.0   640.0  5547.0  (defined in bad_region.lst)
Excluding image region:   724.0  2731.0   726.0  2733.0  (defined in bad_region.lst)
Excluding image region:   883.0  1376.0   885.0  1378.0  (defined in bad_region.lst)
Excluding image region:   901.0  3972.0   903.0  3974.0  (defined in bad_region.lst)
Excluding image region:  1151.0   918.0  1153.0   920.0  (defined in bad_region.lst)
Excluding image region:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions  (defined in bad_region.lst).
Setting the fixed star match radius of 5.00 pix
We have 4 images to process.
SExtractor catalog cache: restored Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits catalog from cache
SExtractor catalog cache: restored Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.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/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1Excluding image region:   190.0  1039.0   192.0  1041.0  (defined in bad_region.lst)
b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
The above guess is bExcluding image region:   226.0  1548.0   228.0  1550.0  (defined in bad_region.lst)
ased on the non-default gain value specified in default.sex by user
Excluding image region:   351.0  1875.0   353.0  1877.0  (defined in bad_region.lst)
Excluding image region:   501.0  5912.0   503.0  5914.0  (defined in bad_region.lst)
Excluding image region:   638.0  5545.0   640.0  5547.0  (defined in bad_region.lst)
Excluding image region:   724.0  2731.0   726.0  2733.0  (defined in bad_region.lst)
Excluding image region:   883.0  1376.0   885.0  1378.0  (defined in bad_region.lst)
Excluding image region:   901.0  3972.0   903.0  3974.0  (defined in bad_region.lst)
Excluding image region:  1151.0   918.0  1153.0   920.0  (defined in bad_region.lst)
Excluding image region:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
Excluding image region:   190.0  1039.0   192.0  1041.0  (defined in bad_region.lst)
Excluding image region:   226.0  1548.0   228.0  1550.0  (defined in bad_region.lst)
Excluding image region:   351.0  1875.0   353.0  1877.0  (defined in bad_region.lst)
Excluding image region:   501.0  5912.0   503.0  5914.0  (defined in bad_region.lst)
Excluding image region:   638.0  5545.0   640.0  5547.0  (defined in bad_region.lst)
Excluding image region:   724.0  2731.0   726.0  2733.0  (defined in bad_region.lst)
Excluding image region:   883.0  1376.0   885.0  1378.0  (defined in bad_region.lst)
Excluding image region:   901.0  3972.0   903.0  3974.0  (defined in bad_region.lst)
Excluding image region:  1151.0   918.0  1153.0   920.0  (defined in bad_region.lst)
Excluding image region:  1157.0   135.0  1159.0   137.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 50 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.3,4.3,3.9,4.8,5.2,5.7 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.3,4.3,3.9,4.8,5.2,5.6 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits


Done with SExtractor!

TIMING SExtractor: 5 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-06-21T07:08:37.4422263
Setting observation time using DATE-OBS keyword: 2026-06-21T07:08:37.4422263

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-06-21T07:08:37.442
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits
Exposure 20 sec, 21.06.2026 07:08:37.442 UTC = JD(UTC) 2461212.79777132 mid. exp.
The reference image star  1500.719  5327.879 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 58537, (58536 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 42
 * rejected inside rectangles defined in bad_region.lst: 1
 * rejected close to frame edge: 262
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>5.0 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): 159
 * 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: -7.16
Detection limit from the magnitude-SNR relation= -7.2  (5.0 sigma detection)
The simple faintest star detection limit= -6.5
80 percent brightest stars detection limit= -7.6
Selected detection limit= -7.6
Final detection limit= -7.6 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.04.9 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 138
 * 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'.
    56927 * detected, using  486/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.013547, number_of_ambiguous_matches=793 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=52932 inliers=52932 rms 0.44 -> 0.43 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.013581, number_of_ambiguous_matches=795 
52932 * matched, [CVPOLY iter 2: order=1 pairs=52932 inliers=52932 rms 0.43 -> 0.43 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.012078, number_of_ambiguous_matches=707 
52922 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=52922 inliers=52922 rms 0.42 -> 0.42 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.005603, number_of_ambiguous_matches=328 
52847 * matched (3rd iteration). Success!
  rotation [degrees] =   0.061
    56927 stars detected, 52847 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 49629, N_manually_selected_comparison_stars = 0
Using 49629 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 49578 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00004*X_pix -0.00002*Y_pix -0.10035
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 45912 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.14
    62617 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  236628 kB used, 275416 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-08-22T10:05:41.9671254
Setting observation time using DATE-OBS keyword: 2026-08-22T10:05:41.9671254

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-22T10:05:41.967
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
The star  1158.025   135.982 is rejected, see bad_region.lst
The star  1810.025   167.023 is rejected, see bad_region.lst
The star  8498.015   871.998 is rejected, see bad_region.lst
The star  1151.987   918.991 is rejected, see bad_region.lst
The star   190.989  1039.972 is rejected, see bad_region.lst
The star   883.993  1376.962 is rejected, see bad_region.lst
The star  3618.986  1437.019 is rejected, see bad_region.lst
The star  6736.187  1627.301 is rejected, see bad_region.lst
The star   352.010  1876.008 is rejected, see bad_region.lst
The star  8839.033  2030.000 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 16818
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 1
 * rejected inside rectangles defined in bad_region.lst: 29
 * rejected close to frame edge: 100
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.3 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): 112
 * 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'.
    16818 * detected, using  143/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000383, number_of_ambiguous_matches=24 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=16293 inliers=16293 rms 1.43 -> 0.35 pix, max corner correction 5.8 pix] fraction_of_ambiguous_matches= 0.000303, number_of_ambiguous_matches=19 
16300 * matched, [CVPOLY iter 2: order=1 pairs=16300 inliers=16300 rms 0.33 -> 0.33 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000287, number_of_ambiguous_matches=18 
16295 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=16295 inliers=16295 rms 0.30 -> 0.30 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000176, number_of_ambiguous_matches=11 
16280 * matched (3rd iteration). Success!
  rotation [degrees] =  -2.000
    16818 stars detected, 16280 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 14567, N_manually_selected_comparison_stars = 0
Using 14567 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 12999 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00019*X_pix +0.00007*Y_pix -0.77538
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 12999 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.45
 ERROR!!! Magnitude calibration failure. Dropping image. 
    62617 objects stored in memory (1000000 max.)
memory:  228996 kB used, 275416 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-08-22T10:06:50.2232867
Setting observation time using DATE-OBS keyword: 2026-08-22T10:06:50.2232867

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-22T10:06:50.223
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
The star  1158.014   135.990 is rejected, see bad_region.lst
The star  1810.005   166.992 is rejected, see bad_region.lst
The star  8497.996   871.994 is rejected, see bad_region.lst
The star  1151.998   918.992 is rejected, see bad_region.lst
The star   190.999  1039.990 is rejected, see bad_region.lst
The star  1200.530  1170.782 is rejected, see bad_region.lst
The star   883.999  1377.009 is rejected, see bad_region.lst
The star  3619.017  1436.995 is rejected, see bad_region.lst
The star   226.424  1549.028 is rejected, see bad_region.lst
The star  6735.985  1627.000 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 16040
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 4
 * rejected inside rectangles defined in bad_region.lst: 35
 * rejected close to frame edge: 101
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.3 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): 23
 * 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'.
    16040 * detected, using  137/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000559, number_of_ambiguous_matches=35 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=15470 inliers=15470 rms 1.97 -> 0.44 pix, max corner correction 5.3 pix] fraction_of_ambiguous_matches= 0.000208, number_of_ambiguous_matches=13 
15490 * matched, [CVPOLY iter 2: order=1 pairs=15490 inliers=15490 rms 0.37 -> 0.37 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000208, number_of_ambiguous_matches=13 
15486 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=15486 inliers=15486 rms 0.34 -> 0.34 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000112, number_of_ambiguous_matches=7 
15462 * matched (3rd iteration). Success!
  rotation [degrees] =  -2.017
    16040 stars detected, 15462 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 13797, N_manually_selected_comparison_stars = 0
Using 13797 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 12482 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00017*X_pix +0.00007*Y_pix -0.75589
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 12482 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.45
 ERROR!!! Magnitude calibration failure. Dropping image. 
    62617 objects stored in memory (1000000 max.)
memory:  228996 kB used, 275416 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 2 seconds
Done with measurements! =)

Total number of measurements 115464 (115464 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 1 seconds
The lightcurve files have been written, freeing up more memory...
Creating vast_image_details.log ... 

Writing summary file: vast_summary.log ...  OK
Selecting the best aperture for each source
Aperture with index 0 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for  9175 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 16528 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  7238 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  5944 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 13962 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: 52562 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 Dra-04-Q1b1x1 (less than 4 images processed)
exp_start= 21.06.2026 07:08:37.442  exp=   20.000  JD= 2461212.79777132  ap=  5.0  rotation=   0.000  *detected= 58537  *matched= 58537  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-06-21_02-08-37_20.00sec_5.00C_LIGHT_0262.fits
exp_start= 18.07.2026 05:37:07.116  exp=   20.000  JD= 2461239.73422588  ap=  4.9  rotation=   0.061  *detected= 56927  *matched= 52847  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Dra-04-Q1b1x1_2026-07-18_00-37-07_20.00sec_5.00C_LIGHT_0188.fits
exp_start= 22.08.2026 10:05:41.967  exp=   20.000  JD= 2461274.92074036  ap=  4.3  rotation=  -2.000  *detected= 16818  *matched= 16280  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-05-41_20.00sec_-0.00C_LIGHTs_0158.fits
exp_start= 22.08.2026 10:06:50.223  exp=   20.000  JD= 2461274.92153036  ap=  4.3  rotation=  -2.017  *detected= 16040  *matched= 15462  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/fd_Dra-04-Q1b1x1_2026-08-22_05-06-50_20.00sec_-0.00C_LIGHTs_0159.fits
Source monitoring: measuring positions from /data_ssd/NMW-TexasTech/workdir/img_2026-08-22_CI_Dra-04-Q1b1x1_050730_TTUQ1b1x1_426618_mpK7AXn7/monitoring_positions.txt
Source monitoring: cannot map PHOTOMETRIC_CALIBRATION= to a calibration method - skipping
########### Completed Dra-04-Q1b1x1 ###########
The analysis was running at tau
We are allowed to update the exclusion list at tau host
Found ../exclusion_list_TTUQ1.txt
#### The exclusion list before filtering-out asteroids, bad pixels and adding Gaia sources ####
###################################################################################
renamed 'exclusion_list_index_html.txt_noasteroids' -> 'exclusion_list_index_html.txt'
renamed 'exclusion_list_index_html.txt_nohotpixels' -> 'exclusion_list_index_html.txt'
# Count candidates with no identification (that also don't look like hot pix)
Found 0 unidentified candidates (excluding asteroids, hot pixels and known variable stars).
###################################################################################
0 candidates found (excluding asteroids and hot pixels)
This does not look like a test run
###################################################################################
exclusion_list_gaiadr2.txt NOT FOUND
exclusion_list_apass.txt NOT FOUND
IS_THIS_TEST_RUN=NO  ALLOW_EXCLUSION_LIST_UPDATE= YES
#### Nothing to add to the exclusion list ####
The observatory MPC code is V36
############################################################
ls: cannot access 'planets.txt': No such file or directory
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT):
ls: cannot access 'moons.txt': No such file or directory
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT):
ls: cannot access 'spacecraft.txt': No such file or directory
############################################################
ls: cannot access 'comets.txt': No such file or directory
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
ls: cannot access 'asassn_transients_list.txt': No such file or directory
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
ls: cannot access 'tocp_transients_list.txt': No such file or directory

=== Transient Factory Profiling ===
Started: Sat Aug 22 05:10:21 CDT 2026
=======================================
TIMING SExtractor: 2 seconds
TIMING matching_and_photometry: 0 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 0 seconds
TIMING SExtractor: 5 seconds
TIMING matching_and_photometry: 2 seconds
TIMING lightcurve_write: 1 seconds
TIMING select_aperture: 2 seconds
FIELD_Dra-04-Q1b1x1: 51s (0.85 min)
=======================================
TOTAL_RUNTIME: 154s (2.57 min)
Finished: Sat Aug 22 05:12:55 CDT 2026