NMW transient search results

This analysis is done by the script util/transients/transient_factory_test31.sh /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP

The list of candidates will appear below. Please manually reload the page every few minutes untill the 'Processing complete' message appears.

Processing fields Aur-03-Q1b1x1

Processing complete!

Total number of candidates identified: 0

FITS images used in this processing run:

Field Aur-03-Q1b1x1 reference image: Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits
Field Aur-03-Q1b1x1 reference image: Aur-03-Q1b1x1_2026-02-21_20-50-53_20.00sec_-15.00C_LIGHT_0054.fits
Field Aur-03-Q1b1x1 second-epoch image: Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits
Field Aur-03-Q1b1x1 second-epoch image: Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits

Processing log:

Filtering log:

######## Processing parameters ########
AAVSO_COMMENT_STRING= NMW-TexasTech Camera-1 135mm f/2.2 telephoto lens + QHY600M CMOS
ASTCHECK_ASTEROID_SEARCH_RADIUS_ARCSEC= 
BAD_REGION_FILE= /var/www/nmw_calibration/TTUQ1b1x1/TTUQ1_bad_region.lst
CAMERA_SETTINGS= TTUQ1b1x1
CHECK_POINTING_ACCURACY= yes
DARK_FRAMES_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ1b1x1/darks
EXCLUSION_LIST= ../exclusion_list_TTUQ1.txt
FILTER_BAD_IMG__MAX_APERTURE_STAR_SIZE_PIX= 12.5
FILTER_BAD_IMG__MAX_ELONGATION_AminusB_PIX= 0.55
FILTER_BAD_IMG__MIN_APERTURE_STAR_SIZE_PIX= 2.0
FILTER_BRIGHT_MAG_CUTOFF_TRANSIENT_SEARCH= -5
FILTER_FAINT_MAG_CUTOFF_TRANSIENT_SEARCH= 15.5
FLAT_FIELD_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ1b1x1/flats
FRAME_EDGE_OFFSET_PIX= 100
GAIA_BAND_FOR_CATALOGED_SOURCE_CHECK= 
MAX_NEW_TO_REF_MEAN_IMG_VALUE_RATIO= 100
DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK= yes
MAX_NEW_IMG_MEAN_VALUE= 25000
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS= 0.18
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS_SOFT_LIMIT= 0.12
MPC_CODE= V36
NMW_CALIBRATION= /var/www/nmw_calibration
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_HARD_LIMIT= 10000
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_SOFT_LIMIT= 8000
OMP_NUM_THREADS= 3
ONLINE_MPCHECKER_BUTTON_ASTEROID_SEARCH_RADIUS_ARCMIN= 
PHOTOMETRIC_CALIBRATION= 
REQUIRE_PIX_SHIFT_BETWEEN_IMAGES_FOR_TRANSIENT_CANDIDATES= yes
SEXTRACTOR_CONFIG_BRIGHTSTARPASS= default.sex.telephoto_lens_onlybrightstars_v1
SEXTRACTOR_CONFIG_FILES= default.sex.telephoto_lens_onlybrightstars_v1 default.sex.telephoto_lens_vSTL
STARMATCH_RADIUS_PIX= 5
SYSREM_ITERATIONS= 0
TELESCOP= 
TELESCOP_NAME_KNOWN_TO_VaST_FOR_FOV_DETERMINATION= 
UCAC5_PLATESOLVE_ITERATIONS= 2
FPACK_FULLY_CALIBRATED_IMAGE= no
#######################################
HOSTNAME= tau
USER= 
HOME= 
#######################################
SExtractor catalog cache: enabled, directory /data_ssd/NMW-TexasTech/vast_sextractor_cache
Reference image directory is set to /data_ssd/NMW-TexasTech/reference_imgs
VIZIER_SITE=vizier.cds.unistra.fr
GAIA_DR2_CLIENT=vizquery (lib/vizquery -> VizieR vizier.cds.unistra.fr)
INFO: MAKE_PNG_PLOTS is set to yes
FITS_FILE_EXT=fits
CALIBRATION_STATUS_PREFIX=
Fields in the data directory: 
Aur-03-Q1b1x1
#######################################
########### Starting Aur-03-Q1b1x1 ###########
Processing Aur-03-Q1b1x1
server tau has sufficient free disk space available: 269736 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 269736 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-02-21_20-50-53_20.00sec_-15.00C_LIGHT_0054.fits
Small preview (one of the new images): 
Large previews of the second-epoch (new) images:
MAKE_PNG_PLOTS=yes
renamed 'Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.png' -> 'transient_report/Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits_preview.png'
Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits

renamed 'Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.png' -> 'transient_report/Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits_preview.png'
Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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= 589.4561 INFO: REFERENCE_EPOCH__FIRST_IMAGE_SD= 820.9163 INFO: SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1723.2411 INFO: SECOND_EPOCH__FIRST_IMAGE_SD= 465.7624 INFO: SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1795.9034 INFO: SECOND_EPOCH__SECOND_IMAGE_SD= 449.1153 ---------------------------------------------- INFO: ref_to_second_epoch_img_mean_ratio= 2.92344 INFO: SECOND_EPOCH__SD_ratio= 0.037 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 = 27.2900009155273 / [degC] Focuser temperature AMBTEMP = 21.7 / [degC] Ambient air temperature Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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= '2026-09-10T06:16:23.9564217' / Time of observation (local)" status=0 Record 12: "DATE-OBS= '2026-09-10T11:16:23.9564217' / Time of observation (UTC)" status=0 Record 13: "MJD-OBS = 61293.4697217131 / Modified Julian Date of observation" status=0 Record 14: "DATE-AVG= '2026-09-10T11:16:33.8588172' / Averaged midpoint time (UTC)" status=0 Record 15: "MJD-AVG = 61293.4698363193 / 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 = 81.8155987066733 / [deg] RA of telescope" status=0 Record 32: "DEC = 38.000103651769 / [deg] Declination of telescope" status=0 Record 33: "CENTALT = 68.9433333333333 / [deg] Altitude of telescope" status=0 Record 34: "CENTAZ = 70.9494444444445 / [deg] Azimuth of telescope" status=0 Record 35: "AIRMASS = 1.07132150018897 / Airmass at frame center (Gueymard 1993)" status=0 Record 36: "PIERSIDE= 'West' / Telescope pointing state" status=0 Record 37: "SITEELEV= 1015.0 / [m] Observation site elevation" status=0 Record 38: "SITELAT = 33.7480555555556 / [deg] Observation site latitude" status=0 Record 39: "SITELONG= -101.958333333333 / [deg] Observation site longitude" status=0 Record 40: "OBSERVER= 'Sokolovsky' / Observer name" status=0 Record 41: "OBSERVAT= 'TTU Skyview' / Observatory name" status=0 Record 42: "SITENAME= '' / Observatory site name" status=0 Record 43: "FWHEEL = 'Simulator' / Filter Wheel name" status=0 Record 44: "FILTER = 'CV' / Active filter name" status=0 Record 45: "OBJECT = 'Aur-03' / Name of the object of interest" status=0 Record 46: "OBJCTRA = '05 27 16' / [H M S] RA of imaged object" status=0 Record 47: "OBJCTDEC= '+38 00 00' / [D M S] Declination of imaged object" status=0 Record 48: "OBJCTROT= 0.0 / [deg] planned rotation of imaged object" status=0 Record 49: "FOCNAME = 'ZWO Focuser' / Focusing equipment name" status=0 Record 50: "FOCPOS = 29503 / [step] Focuser position" status=0 Record 51: "FOCUSPOS= 29503 / [step] Focuser position" status=0 Record 52: "FOCUSSZ = 0.0 / [um] Focuser step size" status=0 Record 53: "FOCTEMP = 27.2900009155273 / [degC] Focuser temperature" status=0 Record 54: "FOCUSTEM= 27.2900009155273 / [degC] Focuser temperature" status=0 Record 55: "DEWPOINT= 14.4 / [degC] Dew point" status=0 Record 56: "HUMIDITY= 63.0 / [percent] Relative humidity" status=0 Record 57: "PRESSURE= 902.3 / [hPa] Air pressure" status=0 Record 58: "AMBTEMP = 21.7 / [degC] Ambient air temperature" status=0 Record 59: "WINDDIR = 21.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0 Record 60: "WINDGUST= 3.600288 / [kph] Wind gust" status=0 Record 61: "WINDSPD = 1.800144 / [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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits 9576 6388 16 bitpix SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/d_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits :) Spent 0.645304 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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/d_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits EXPTIME = 20.0 / [s] Exposure duration SET-TEMP= 0.0 / [degC] CCD temperature setpoint CCD-TEMP= -0.0 / [degC] CCD temperature FOCTEMP = 27.2900009155273 / [degC] Focuser temperature AMBTEMP = 21.7 / [degC] Ambient air temperature Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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= '2026-09-10T06:17:04.6052151' / Time of observation (local)" status=0 Record 12: "DATE-OBS= '2026-09-10T11:17:04.6052151' / Time of observation (UTC)" status=0 Record 13: "MJD-OBS = 61293.4701921875 / Modified Julian Date of observation" status=0 Record 14: "DATE-AVG= '2026-09-10T11:17:14.5090138' / Averaged midpoint time (UTC)" status=0 Record 15: "MJD-AVG = 61293.470306817 / 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 = 81.8155986480432 / [deg] RA of telescope" status=0 Record 32: "DEC = 38.0001036453334 / [deg] Declination of telescope" status=0 Record 33: "CENTALT = 69.0744444444444 / [deg] Altitude of telescope" status=0 Record 34: "CENTAZ = 70.9241666666667 / [deg] Azimuth of telescope" status=0 Record 35: "AIRMASS = 1.07038342933944 / Airmass at frame center (Gueymard 1993)" status=0 Record 36: "PIERSIDE= 'West' / Telescope pointing state" status=0 Record 37: "SITEELEV= 1015.0 / [m] Observation site elevation" status=0 Record 38: "SITELAT = 33.7480555555556 / [deg] Observation site latitude" status=0 Record 39: "SITELONG= -101.958333333333 / [deg] Observation site longitude" status=0 Record 40: "OBSERVER= 'Sokolovsky' / Observer name" status=0 Record 41: "OBSERVAT= 'TTU Skyview' / Observatory name" status=0 Record 42: "SITENAME= '' / Observatory site name" status=0 Record 43: "FWHEEL = 'Simulator' / Filter Wheel name" status=0 Record 44: "FILTER = 'CV' / Active filter name" status=0 Record 45: "OBJECT = 'Aur-03' / Name of the object of interest" status=0 Record 46: "OBJCTRA = '05 27 16' / [H M S] RA of imaged object" status=0 Record 47: "OBJCTDEC= '+38 00 00' / [D M S] Declination of imaged object" status=0 Record 48: "OBJCTROT= 0.0 / [deg] planned rotation of imaged object" status=0 Record 49: "FOCNAME = 'ZWO Focuser' / Focusing equipment name" status=0 Record 50: "FOCPOS = 29503 / [step] Focuser position" status=0 Record 51: "FOCUSPOS= 29503 / [step] Focuser position" status=0 Record 52: "FOCUSSZ = 0.0 / [um] Focuser step size" status=0 Record 53: "FOCTEMP = 27.2900009155273 / [degC] Focuser temperature" status=0 Record 54: "FOCUSTEM= 27.2900009155273 / [degC] Focuser temperature" status=0 Record 55: "DEWPOINT= 14.4 / [degC] Dew point" status=0 Record 56: "HUMIDITY= 63.0 / [percent] Relative humidity" status=0 Record 57: "PRESSURE= 902.3 / [hPa] Air pressure" status=0 Record 58: "AMBTEMP = 21.7 / [degC] Ambient air temperature" status=0 Record 59: "WINDDIR = 21.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0 Record 60: "WINDGUST= 3.600288 / [kph] Wind gust" status=0 Record 61: "WINDSPD = 1.800144 / [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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits 9576 6388 16 bitpix SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/d_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits :) Spent 0.615924 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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/d_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits Previews of the CALIBRATED second-epoch images:

fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits


fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-02-21_20-50-53_20.00sec_-15.00C_LIGHT_0054.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits Last image: 2461293.96983745 10.09.2026 11:16:23.956 UTC WARNING: VaST exited with code 1 on the field Aur-03-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_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits to check the telescope pointing Entering WCS image calibration mode. ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits WCS_IMAGE_NAME=wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits Field of view for the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits /data_ssd/NMW-TexasTech/workdir/vast_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/lib/make_outxyls_for_astrometric_calibration found 1736 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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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: "out3451093.xyls"... Reading sort column "FLUX_APER" Sorting sort column mmapping input file Copying table header. Writing row 0 Done Solving... Reading file "./out3451093.axy"... Field 1 did not solve (index index-4119.fits, field objects 1-10). Field 1 did not solve (index index-4118.fits, field objects 1-10). Field 1 did not solve (index index-4117.fits, field objects 1-10). Field 1 did not solve (index index-4116.fits, field objects 1-10). Field 1 did not solve (index index-4115.fits, field objects 1-10). log-odds ratio 23.8394 (2.25598e+10), 9 match, 0 conflict, 22 distractors, 92 index. RA,Dec = (81.7487,38.0011), pixel scale 5.91873 arcsec/pix. Hit/miss: Hit/miss: +---++------+---++----------+++(best)---------++--------------------------+--------+----------+---+------- Field 1: solved with index index-4114.fits. Field 1 solved: writing to file ./out3451093.solved to indicate this. Field: out3451093.xyls Field center: (RA,Dec) = (81.824309, 38.010662) deg. Field center: (RA H:M:S, Dec D:M:S) = (05:27:17.834, +38:00:38.383). Field size: 15.792 x 10.574 degrees Field rotation angle: up is 3.24328 degrees E of N Field parity: neg Inserting WCS header... '/data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits' -> 'fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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 Sep 10 06:22 fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits -rw-r--r-- 1 apache apache 12K Sep 10 06:22 out3451093.wcs Inserting WCS header (1st iteration local)... Opening FITS image file fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits for reading... done! Creating new image file (wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits)... done! done! All done! done The WCS header appears to be added with no errors in /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits (fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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: "out3451093.xyls"... Reading sort column "FLUX_APER" Sorting sort column mmapping input file Copying table header. Writing row 0 Done Solving... Reading file "./out3451093.axy"... Only searching for solutions within 15.7217 degrees of RA,Dec (81.8254,38.0114) log-odds ratio 25.7534 (1.5295e+11), 3 match, 0 conflict, 2 distractors, 27 index. RA,Dec = (81.8067,38.031), pixel scale 5.94257 arcsec/pix. Hit/miss: Hit/miss: +-+-+(best)-----------------------------+----------------------------------------------------------------- Field 1: solved with index index-4116.fits. Field 1 solved: writing to file ./out3451093.solved to indicate this. Field: out3451093.xyls Field center: (RA,Dec) = (81.825127, 38.011364) deg. Field center: (RA H:M:S, Dec D:M:S) = (05:27:18.030, +38:00:40.909). Field size: 15.7695 x 10.5693 degrees Field rotation angle: up is 3.24122 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 Sep 10 06:22 fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits -rw-r--r-- 1 apache apache 12K Sep 10 06:22 out3451093.wcs Inserting WCS header (2nd iteration local)... Opening FITS image file fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits for reading... done! Creating new image file (wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits"... Found an existing WCS header, will try to verify it. Extracting sources... simplexy: found 13595 sources. Solving... Reading file "./wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.axy"... Verifying WCS using indices with quads of size [63.7221, 955.233] arcmin Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits) Verifying WCS of field 1. log-odds ratio 158.186 (5.0039e+68), 15 match, 0 conflict, 69 distractors, 15 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: --+-++------+-+--+----+-----------------+-------+++-----+--------+--------+--------+(best)---------------- --> log-odds 158.186 Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits) Verifying WCS of field 1. log-odds ratio 304.634 (2.00016e+132), 27 match, 0 conflict, 128 distractors, 27 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: --++++++---++-+--+---++--------+--+----++++-----++++----+--------+--------+--------+---------------- --> log-odds 304.634 Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits) Verifying WCS of field 1. log-odds ratio 528.713 (4.14061e+229), 48 match, 0 conflict, 111 distractors, 48 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: +-++++++--+++-+--+--+++--------++++-+-+++++-----++++----++-------+--+--+-++----++--+-+++------------ --> log-odds 528.713 Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits) Verifying WCS of field 1. log-odds ratio 1007.38 (inf), 97 match, 0 conflict, 408 distractors, 98 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: ++++++++--+++-++-++-+++-++++++-++++++-+++++-++--+++++---++-+-+--++--+++++++----++-++++++-+-----+---- --> log-odds 1007.38 Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits) Verifying WCS of field 1. log-odds ratio 1826.18 (inf), 187 match, 0 conflict, 1208 distractors, 188 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: +++++++++++++-++-++++++-+++++++++++++++++++++++-++++++++++++-++-+++-+++++++-+-+++-++-+++++----+++++- --> log-odds 1826.18 Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits) Verifying WCS of field 1. log-odds ratio 3369 (inf), 370 match, 0 conflict, 1689 distractors, 373 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: +++++++++++++-++-++++++-+++++++++++++++++++++++-++++++++++++-++-+++++++++++++-++++++++++++---+++++++ --> log-odds 3369 Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits) Verifying WCS of field 1. log-odds ratio 6071.69 (inf), 716 match, 0 conflict, 3977 distractors, 724 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: +++++++++++++-++-++++++-+++++++++++++++++++++++-++++++++++++-++-+++++++++++++-++++++++++++-+-+++++++ --> log-odds 6071.69 Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits) Verifying WCS of field 1. log-odds ratio 11359.9 (inf), 1436 match, 1 conflict, 3751 distractors, 1461 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: +++++++++++++-++-++++++-+++++++++++++++++++++++-++++++++++++-++-+++++++++++++-++++++++++++-+-+++++++ --> log-odds 11359.9 Verifying WCS using indices with quads of size [63.7221, 955.233] arcmin Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits) Verifying WCS of field 1. log-odds ratio 158.186 (5.0039e+68), 15 match, 0 conflict, 69 distractors, 15 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: --+-++------+-+--+----+-----------------+-------+++-----+--------+--------+--------+(best)---------------- --> log-odds 158.186 Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits) Verifying WCS of field 1. log-odds ratio 304.634 (2.00016e+132), 27 match, 0 conflict, 128 distractors, 27 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: --++++++---++-+--+---++--------+--+----++++-----++++----+--------+--------+--------+---------------- --> log-odds 304.634 Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits) Verifying WCS of field 1. log-odds ratio 528.713 (4.14061e+229), 48 match, 0 conflict, 111 distractors, 48 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: +-++++++--+++-+--+--+++--------++++-+-+++++-----++++----++-------+--+--+-++----++--+-+++------------ --> log-odds 528.713 Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits) Verifying WCS of field 1. log-odds ratio 1007.38 (inf), 97 match, 0 conflict, 408 distractors, 98 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: ++++++++--+++-++-++-+++-++++++-++++++-+++++-++--+++++---++-+-+--++--+++++++----++-++++++-+-----+---- --> log-odds 1007.38 Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits) Verifying WCS of field 1. log-odds ratio 1826.18 (inf), 187 match, 0 conflict, 1208 distractors, 188 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: +++++++++++++-++-++++++-+++++++++++++++++++++++-++++++++++++-++-+++-+++++++-+-+++-++-+++++----+++++- --> log-odds 1826.18 Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits) Verifying WCS of field 1. log-odds ratio 3369 (inf), 370 match, 0 conflict, 1689 distractors, 373 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: +++++++++++++-++-++++++-+++++++++++++++++++++++-++++++++++++-++-+++++++++++++-++++++++++++---+++++++ --> log-odds 3369 Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits) Verifying WCS of field 1. log-odds ratio 6071.69 (inf), 716 match, 0 conflict, 3977 distractors, 724 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: +++++++++++++-++-++++++-+++++++++++++++++++++++-++++++++++++-++-+++++++++++++-++++++++++++-+-+++++++ --> log-odds 6071.69 Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits) Verifying WCS of field 1. log-odds ratio 11359.9 (inf), 1436 match, 1 conflict, 3751 distractors, 1461 index. RA,Dec = (81.824,38.0106), pixel scale 5.98517 arcsec/pix. Hit/miss: Hit/miss: +++++++++++++-++-++++++-+++++++++++++++++++++++-++++++++++++-++-+++++++++++++-++++++++++++-+-+++++++ --> log-odds 11359.9 Got 16 solutions. Field: wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits Field center: (RA,Dec) = (81.825633, 38.010475) deg. Field center: (RA H:M:S, Dec D:M:S) = (05:27:18.152, +38:00:37.710). Field size: 15.7698 x 10.5724 degrees Field rotation angle: up is 3.24242 degrees E of N Field parity: neg Creating new FITS file "./wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.new"... renamed 'wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.new' -> 'wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits' Checking if the catalog wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits.wcscat corresponding to the image wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits alredy exist and is non-empty... Catalog wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits.wcscat corresponding to the image wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits was not found. verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits verification OK: wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits Generating wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits.wcscat from image00003.cat Catalog wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits.wcscat corresponding to the image wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits created. verification OK: wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits verification OK: wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits Image size: 941.1'x626.6' 15.7(deg)x10.4(deg) 9576x6388 pix Image scale: 5.90"/pix along the X axis and 5.89"/pix along the Y axis Image center: 05:27:18.419 +38:00:40.53 J2000 4789.000 3195.000 ### Converting SExtractor-derived pixel positions to celestial coordinates using xy2sky from WCSTools ### ### Converted positions of 1887 stars ### 'wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits.wcscat' -> 'vast_debug_catalog_before_xy2sky_correction.cat.log' '/data_ssd/NMW-TexasTech/workdir/vast_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/correct_sextractor_wcs_catalog_usingxy2sky3462092.tmp' -> 'vast_debug_catalog_after_xy2sky_correction.cat.log' The plate-solved (WCS-calibrated) image is saved to wcs_fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits ################################### # Check the image center offset between the reference and the blindly solved unmatched second-epoch image (pointing accuracy) Reference image center 05:27:16.998 +37:59:58.58 Second-epoch image center 05:27:18.419 +38:00:40.53 Angular distance between the image centers 0.0126 deg. ################################### The second-epoch image center is consistent with the reference image center (offset 0.0126 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 ... 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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP)... 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/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-02-21_20-50-53_20.00sec_-15.00C_LIGHT_0054.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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 Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits catalog from cache SExtractor catalog cache: restored Aur-03-Q1b1x1_2026-02-21_20-50-53_20.00sec_-15.00C_LIGHT_0054.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/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-02-21_20-50-53_20.00sec_-15.00C_LIGHT_0054.fits The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits The above guess is based on the non-default gain value specified in default.sex by user Parent process says: we are done fork()ing. Waiting for thread 2 to finish... The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits > image00003.cat.sex_log 2>&1 autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits > image00004.cat.sex_log 2>&1 autodetect_aperture() is doing the main SExtractor run sex -PARAMETERS_NAME default.param -PHOT_APERTURES 6.4,6.4,5.8,7.0,7.7,8.3 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits > image00003.cat.sex_log 2>&1 autodetect_aperture() is doing the main SExtractor run sex -PARAMETERS_NAME default.param -PHOT_APERTURES 6.5,6.5,5.8,7.1,7.7,8.4 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits > image00004.cat.sex_log 2>&1 autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits Waiting for thread 1 to finish... autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits 9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits Trying to guess the time system by parsing the comment string 'Time of observation (UTC)' Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)' The input time system is identified as: UTC (blank if unknown) Setting observation date using DATE-OBS keyword: 2026-01-18T02:41:07.3186602 Setting observation time using DATE-OBS keyword: 2026-01-18T02:41:07.3186602 Observing time converted to the "standard" FITS header format: DATE-OBS= 2026-01-18T02:41:07.318 EXPTIME = 20.000 Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits Exposure 20 sec, 18.01.2026 02:41:07.318 UTC = JD(UTC) 2461058.61200600 mid. exp. SExtractor output filtering results: * passed selection: 27695, (27692 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: 0 * rejected close to frame edge: 137 * rejected as being too small (<1.6 pix): 0 * rejected as being too large (>6.2 pix): 0 * rejected as outliers in mag-size plot: 0 * rejected as having SExtractor flags > 99 and <= 7: 0 * rejected as having hopelessly bad SExtractor flags (>7): 11 * 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: -7.70 Detection limit from the magnitude-SNR relation= -7.7 (5.0 sigma detection) The simple faintest star detection limit= -9.8 80 percent brightest stars detection limit= -10.5 Selected detection limit= -10.5 Final detection limit= -10.5 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0) Parameter box for transient search: 10.06.1 pix): 0 * rejected as outliers in mag-size plot: 0 * rejected as having SExtractor flags > 99 and <= 7: 0 * rejected as having hopelessly bad SExtractor flags (>7): 13 * 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'. 26955 * detected, using 486/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.013757, number_of_ambiguous_matches=381 refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=23837 inliers=23837 rms 1.36 -> 0.36 pix, max corner correction 5.3 pix] fraction_of_ambiguous_matches= 0.010182, number_of_ambiguous_matches=282 23839 * matched, [CVPOLY iter 2: order=1 pairs=23839 inliers=23839 rms 0.29 -> 0.29 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.006752, number_of_ambiguous_matches=187 23829 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=23829 inliers=23829 rms 0.20 -> 0.20 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.003105, number_of_ambiguous_matches=86 23823 * matched (3rd iteration). Success! rotation [degrees] = 174.730 26955 stars detected, 23823 stars matched Performing magnitude calibration using automatically selected comparison stars Expecting to find at least 40 * for magnitude calibration We have N_good_stars = 20755, N_manually_selected_comparison_stars = 0 Using 20755 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 20754 stars for magnitude calibration. Using the linear CCD position-dependent magnitude correction: delta_m = -0.00002*X_pix -0.00001*Y_pix +0.09458 Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)... Computing robust linear magnitude calibration. Used 20729 stars for magnitude calibration (after filtering). get_detection_limit_sn(): Detection limit: -7.72 30827 objects stored in memory (1000000 max.) Magnitude calibration is performed successfully! Saving observations to the cache... OK memory: 211436 kB used, 249960 kB peak, 65263848 kB available RAM processed 2 of 4 images ( 50.0%) Processing /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits 9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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: 2026-09-10T11:16:23.9564217 Setting observation time using DATE-OBS keyword: 2026-09-10T11:16:23.9564217 Observing time converted to the "standard" FITS header format: DATE-OBS= 2026-09-10T11:16:23.956 EXPTIME = 20.000 Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits SExtractor output filtering results: * passed selection: 1874 * 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: 13 * rejected as being too small (<1.6 pix): 0 * rejected as being too large (>6.4 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): 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'. 1874 * 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=1834 inliers=1834 rms 0.59 -> 0.16 pix, max corner correction 3.4 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 1834 * matched, [CVPOLY iter 2: order=1 pairs=1834 inliers=1834 rms 0.16 -> 0.16 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 1834 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=1834 inliers=1834 rms 0.16 -> 0.16 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 1834 * matched (3rd iteration). Success! rotation [degrees] = -6.559 1874 stars detected, 1834 stars matched Performing magnitude calibration using automatically selected comparison stars Expecting to find at least 40 * for magnitude calibration We have N_good_stars = 1088, N_manually_selected_comparison_stars = 0 Using 1088 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 882 stars for magnitude calibration. Using the linear CCD position-dependent magnitude correction: delta_m = 0.00017*X_pix -0.00003*Y_pix -0.17334 ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG Used 882 stars for magnitude calibration (after filtering). get_detection_limit_sn(): Detection limit: -8.01  ERROR!!! Magnitude calibration failure. Dropping image.  30827 objects stored in memory (1000000 max.) memory: 210152 kB used, 249960 kB peak, 65263848 kB available RAM processed 3 of 4 images ( 75.0%) Processing /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits 9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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: 2026-09-10T11:17:04.6052151 Setting observation time using DATE-OBS keyword: 2026-09-10T11:17:04.6052151 Observing time converted to the "standard" FITS header format: DATE-OBS= 2026-09-10T11:17:04.605 EXPTIME = 20.000 Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits SExtractor output filtering results: * passed selection: 1248 * 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: 5 * 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): 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'. 1248 * 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=1231 inliers=1231 rms 0.59 -> 0.18 pix, max corner correction 3.5 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 1231 * matched, [CVPOLY iter 2: order=1 pairs=1231 inliers=1231 rms 0.18 -> 0.18 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 1231 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=1231 inliers=1231 rms 0.18 -> 0.18 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000000, number_of_ambiguous_matches=0 1231 * matched (3rd iteration). Success! rotation [degrees] = -6.559 1248 stars detected, 1231 stars matched Performing magnitude calibration using automatically selected comparison stars Expecting to find at least 40 * for magnitude calibration We have N_good_stars = 635, N_manually_selected_comparison_stars = 0 Using 635 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 509 stars for magnitude calibration. Using the linear CCD position-dependent magnitude correction: delta_m = 0.00019*X_pix -0.00002*Y_pix -0.21814 ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG Used 509 stars for magnitude calibration (after filtering). get_detection_limit_sn(): Detection limit: -8.06  ERROR!!! Magnitude calibration failure. Dropping image.  30827 objects stored in memory (1000000 max.) memory: 241340 kB used, 249960 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 54650 (54650 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 4952 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 8413 stars Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 2630 stars Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 2481 stars Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 5347 stars done! =) TIMING select_aperture: 1 seconds Computing lightcurve statistics... Will not compute variability indexes for objects having <1 points in lightcurve You may disable this by commenting out the line '#define DROP_LIGHTCURVES_WITH_SMALL_NUMBER_OF_POINTS_FROM_ALL_PLOTS' in src/vast_limits.h an re-compiling VaST with 'make' Computing, please wait a bit ............................................................................................................................................................................................................................................ vast_lightcurve_statistics.log: 23623 objects, the longest string is 385 bytes. Allocating memory for resorting the file. ----***** VaST processing WARNING *****---- You asked VaST to process 4 images, but only 1 were actually matched to the reference one. Please investigate this! ************************************************************** This error might be a bug, but it is far more likely that it is caused by inappropriate input data. A few simple things to check in the diagnostic messages printed above (or the vast*.log files): * How many of the input images are matched? * Does the number of detected stars on each image look reasonable? * Do images have a sufficient overlap of at least about 20 percent? You may run ./sextract_single_image /path/to/my/image/file.fit to see how well VaST detects stars with the current SExtractor settings (star detection settings can be changed in the default.sex configuration file, see various examples in the VaST directory). If you cannot identify the problem, please e-mail Kirill Sokolovsky Please try to describe the problem in details and, if possible, attach vast_summary.log file and a few example images. If the images are too big to be sent by e-mail, please upload them through a web-form http://scan.sai.msu.ru/upload/ ************************************************************** Low percentage of matched images - we'll declare this an unsuccessful VaST run (exit code 1) _____________________ ERROR running VaST on the field Aur-03-Q1b1x1 (less than 4 images processed) exp_start= 18.01.2026 02:41:07.318 exp= 20.000 JD= 2461058.61200600 ap= 6.2 rotation= 0.000 *detected= 27695 *matched= 27695 status=OK /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits exp_start= 22.02.2026 02:50:53.978 exp= 20.000 JD= 2461093.61879604 ap= 6.1 rotation= 174.730 *detected= 26955 *matched= 23823 status=OK /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-02-21_20-50-53_20.00sec_-15.00C_LIGHT_0054.fits exp_start= 10.09.2026 11:16:23.956 exp= 20.000 JD= 2461293.96983745 ap= 6.4 rotation= -6.559 *detected= 1874 *matched= 1834 status=ERROR /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits exp_start= 10.09.2026 11:17:04.605 exp= 20.000 JD= 2461293.97030793 ap= 6.5 rotation= -6.559 *detected= 1248 *matched= 1231 status=ERROR /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-02-21_20-50-53_20.00sec_-15.00C_LIGHT_0054.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits Last image: 2461293.96983745 10.09.2026 11:16:23.956 UTC WARNING: VaST exited with code 1 on the field Aur-03-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 ... 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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP)... 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/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-02-21_20-50-53_20.00sec_-15.00C_LIGHT_0054.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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 Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits catalog from cache SExtractor catalog cache: restored Aur-03-Q1b1x1_2026-02-21_20-50-53_20.00sec_-15.00C_LIGHT_0054.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/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-02-21_20-50-53_20.00sec_-15.00C_LIGHT_0054.fits The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits Parent process says: we are done fork()ing. Waiting for thread 2 to finish... 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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits > image00003.cat.sex_log 2>&1 The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits > image00004.cat.sex_log 2>&1 autodetect_aperture() is doing the main SExtractor run sex -PARAMETERS_NAME default.param -PHOT_APERTURES 4.9,4.9,4.5,5.4,5.9,6.4 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits > image00004.cat.sex_log 2>&1 autodetect_aperture() is doing the main SExtractor run sex -PARAMETERS_NAME default.param -PHOT_APERTURES 5.0,5.0,4.5,5.5,6.0,6.5 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits > image00003.cat.sex_log 2>&1 autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits Waiting for thread 1 to finish... autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits Done with SExtractor! TIMING SExtractor: 6 seconds Matching stars between images! No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine. Processing /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits 9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits Trying to guess the time system by parsing the comment string 'Time of observation (UTC)' Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)' The input time system is identified as: UTC (blank if unknown) Setting observation date using DATE-OBS keyword: 2026-01-18T02:41:07.3186602 Setting observation time using DATE-OBS keyword: 2026-01-18T02:41:07.3186602 Observing time converted to the "standard" FITS header format: DATE-OBS= 2026-01-18T02:41:07.318 EXPTIME = 20.000 Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits Exposure 20 sec, 18.01.2026 02:41:07.318 UTC = JD(UTC) 2461058.61200600 mid. exp. The reference image star 8500.386 870.656 is rejected, see bad_region.lst The reference image star 9441.752 4280.150 is rejected, see bad_region.lst The reference image star 2317.999 4331.999 is rejected, see bad_region.lst The reference image star 1543.303 5510.395 is rejected, see bad_region.lst The reference image star 1505.036 5323.224 is rejected, see bad_region.lst SExtractor output filtering results: * passed selection: 201264, (201263 good for image matching) * rejected as having no flux measurement: 0 * rejected as having SNR<3.0: 55 * rejected inside rectangles defined in bad_region.lst: 5 * rejected close to frame edge: 979 * rejected as being too small (<1.2 pix): 0 * rejected as being too large (>4.7 pix): 0 * rejected as outliers in mag-size plot: 0 * rejected as having SExtractor flags > 99 and <= 7: 0 * rejected as having hopelessly bad SExtractor flags (>7): 12 * 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: -7.38 Detection limit from the magnitude-SNR relation= -7.4 (5.0 sigma detection) The simple faintest star detection limit= -6.6 80 percent brightest stars detection limit= -7.9 Selected detection limit= -7.9 Final detection limit= -7.9 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0) Parameter box for transient search: 10.04.5 pix): 0 * rejected as outliers in mag-size plot: 0 * rejected as having SExtractor flags > 99 and <= 7: 0 * rejected as having hopelessly bad SExtractor flags (>7): 9 * 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'. 211154 * detected, using 524/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.025124, number_of_ambiguous_matches=5305 refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=177834 inliers=177834 rms 1.32 -> 0.38 pix, max corner correction 5.1 pix] fraction_of_ambiguous_matches= 0.023296, number_of_ambiguous_matches=4919 178250 * matched, [CVPOLY iter 2: order=1 pairs=178250 inliers=178250 rms 0.31 -> 0.31 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.023267, number_of_ambiguous_matches=4913 178250 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=178250 inliers=178250 rms 0.32 -> 0.32 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.023267, number_of_ambiguous_matches=4913 178250 * matched (3rd iteration). Success! rotation [degrees] = 174.730 211154 stars detected, 178250 stars matched Performing magnitude calibration using automatically selected comparison stars Expecting to find at least 40 * for magnitude calibration We have N_good_stars = 145257, N_manually_selected_comparison_stars = 0 Using 145257 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 145245 stars for magnitude calibration. Using the linear CCD position-dependent magnitude correction: delta_m = -0.00001*X_pix -0.00001*Y_pix +0.10588 Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)... Computing robust linear magnitude calibration. Used 133070 stars for magnitude calibration (after filtering). get_detection_limit_sn(): Detection limit: -7.37 234168 objects stored in memory (1000000 max.) Magnitude calibration is performed successfully! Saving observations to the cache... OK memory: 370488 kB used, 398868 kB peak, 65263848 kB available RAM Total number of measurements 412418 (412418 measurements stored in RAM) sorting the measurements cached in memory, writing lightcurve (outNNNNN.dat) files... processed 2 of 4 images ( 50.0%) Processing /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits 9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.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: 2026-09-10T11:16:23.9564217 Setting observation time using DATE-OBS keyword: 2026-09-10T11:16:23.9564217 Observing time converted to the "standard" FITS header format: DATE-OBS= 2026-09-10T11:16:23.956 EXPTIME = 20.000 Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits The star 8497.986 871.998 is rejected, see bad_region.lst The star 1151.990 918.973 is rejected, see bad_region.lst The star 190.983 1040.276 is rejected, see bad_region.lst The star 884.011 1377.012 is rejected, see bad_region.lst The star 3618.991 1437.013 is rejected, see bad_region.lst The star 352.010 1875.996 is rejected, see bad_region.lst The star 724.997 2732.013 is rejected, see bad_region.lst The star 1454.993 3132.993 is rejected, see bad_region.lst The star 3305.211 3303.646 is rejected, see bad_region.lst The star 1502.005 5325.814 is rejected, see bad_region.lst Excluding more stars falling at bad regions!.. (will not print them all) SExtractor output filtering results: * passed selection: 18685 * rejected as having no flux measurement: 0 * rejected as having SNR<3.0: 3 * rejected inside rectangles defined in bad_region.lst: 16 * rejected close to frame edge: 79 * 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): 16 * 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'. 18685 * detected, using 100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000068, number_of_ambiguous_matches=16 refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=18304 inliers=18304 rms 0.73 -> 0.27 pix, max corner correction 3.5 pix] fraction_of_ambiguous_matches= 0.000064, number_of_ambiguous_matches=15 18303 * matched, [CVPOLY iter 2: order=1 pairs=18303 inliers=18303 rms 0.26 -> 0.26 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000064, number_of_ambiguous_matches=15 18303 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=18303 inliers=18303 rms 0.26 -> 0.26 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000064, number_of_ambiguous_matches=15 18303 * matched (3rd iteration). Success! rotation [degrees] = -6.553 18685 stars detected, 18303 stars matched Performing magnitude calibration using automatically selected comparison stars Expecting to find at least 40 * for magnitude calibration We have N_good_stars = 11963, N_manually_selected_comparison_stars = 0 Using 11963 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 7909 stars for magnitude calibration. Using the linear CCD position-dependent magnitude correction: delta_m = 0.00021*X_pix +0.00004*Y_pix -0.48836 ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG Used 7909 stars for magnitude calibration (after filtering). get_detection_limit_sn(): Detection limit: -7.71  ERROR!!! Magnitude calibration failure. Dropping image.  234168 objects stored in memory (1000000 max.) memory: 482460 kB used, 649024 kB peak, 65263848 kB available RAM processed 3 of 4 images ( 75.0%) Processing /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits 9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.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: 2026-09-10T11:17:04.6052151 Setting observation time using DATE-OBS keyword: 2026-09-10T11:17:04.6052151 Observing time converted to the "standard" FITS header format: DATE-OBS= 2026-09-10T11:17:04.605 EXPTIME = 20.000 Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits The star 1809.739 167.067 is rejected, see bad_region.lst The star 8498.013 872.011 is rejected, see bad_region.lst The star 1151.971 919.009 is rejected, see bad_region.lst The star 190.839 1040.014 is rejected, see bad_region.lst The star 883.623 1378.164 is rejected, see bad_region.lst The star 3619.136 1437.059 is rejected, see bad_region.lst The star 352.006 1876.009 is rejected, see bad_region.lst The star 2635.996 2107.904 is rejected, see bad_region.lst The star 724.974 2731.997 is rejected, see bad_region.lst The star 1454.995 3133.009 is rejected, see bad_region.lst Excluding more stars falling at bad regions!.. (will not print them all) SExtractor output filtering results: * passed selection: 12790 * rejected as having no flux measurement: 0 * rejected as having SNR<3.0: 1 * rejected inside rectangles defined in bad_region.lst: 17 * rejected close to frame edge: 57 * rejected as being too small (<1.2 pix): 0 * rejected as being too large (>4.9 pix): 0 * rejected as outliers in mag-size plot: 0 * rejected as having SExtractor flags > 99 and <= 7: 0 * rejected as having hopelessly bad SExtractor flags (>7): 5 * rejected due to an external image flag: 0 * rejected as having bad PSF fit: 0 --- You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'. 12790 * detected, using 100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000051, number_of_ambiguous_matches=12 refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=12571 inliers=12571 rms 1.45 -> 0.33 pix, max corner correction 3.9 pix] fraction_of_ambiguous_matches= 0.000030, number_of_ambiguous_matches=7 12577 * matched, [CVPOLY iter 2: order=1 pairs=12577 inliers=12577 rms 0.26 -> 0.26 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000030, number_of_ambiguous_matches=7 12577 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=12577 inliers=12577 rms 0.26 -> 0.26 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000030, number_of_ambiguous_matches=7 12577 * matched (3rd iteration). Success! rotation [degrees] = -6.572 12790 stars detected, 12577 stars matched Performing magnitude calibration using automatically selected comparison stars Expecting to find at least 40 * for magnitude calibration We have N_good_stars = 7956, N_manually_selected_comparison_stars = 0 Using 7956 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 4514 stars for magnitude calibration. Using the linear CCD position-dependent magnitude correction: delta_m = 0.00018*X_pix +0.00003*Y_pix -0.42047 ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG Used 4514 stars for magnitude calibration (after filtering). get_detection_limit_sn(): Detection limit: -7.74  ERROR!!! Magnitude calibration failure. Dropping image.  234168 objects stored in memory (1000000 max.) memory: 482460 kB used, 649024 kB peak, 65263848 kB available RAM processed 4 of 4 images (100.0%) TIMING matching_and_photometry: 8 seconds Done with measurements! =) Total number of measurements 412418 (0 measurements stored in RAM) Freeing up some memory... Sorting the measurements cached in memory... Writing lightcurve (outNNNNN.dat) files... TIMING lightcurve_write: 0 seconds The lightcurve files have been written, freeing up more memory... Creating vast_image_details.log ... Writing summary file: vast_summary.log ... OK Selecting the best aperture for each source Aperture with index 0 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for 40838 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 46261 stars Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for 25023 stars Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for 24929 stars Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for 41199 stars done! =) TIMING select_aperture: 8 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: 177441 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 Aur-03-Q1b1x1 (less than 4 images processed) exp_start= 18.01.2026 02:41:07.318 exp= 20.000 JD= 2461058.61200600 ap= 4.7 rotation= 0.000 *detected= 201264 *matched= 201264 status=OK /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-01-17_20-41-07_20.00sec_-15.00C_LIGHT_0049.fits exp_start= 22.02.2026 02:50:53.978 exp= 20.000 JD= 2461093.61879604 ap= 4.5 rotation= 174.730 *detected= 211154 *matched= 178250 status=OK /data_ssd/NMW-TexasTech/reference_imgs/Aur-03-Q1b1x1_2026-02-21_20-50-53_20.00sec_-15.00C_LIGHT_0054.fits exp_start= 10.09.2026 11:16:23.956 exp= 20.000 JD= 2461293.96983745 ap= 5.0 rotation= -6.553 *detected= 18685 *matched= 18303 status=ERROR /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-16-23_20.00sec_-0.00C_LIGHTs_0085.fits exp_start= 10.09.2026 11:17:04.605 exp= 20.000 JD= 2461293.97030793 ap= 4.9 rotation= -6.572 *detected= 12790 *matched= 12577 status=ERROR /data_ssd/NMW-TexasTech/workdir//img_2026-09-10_CI_Aur-03-Q1b1x1_061747_TTUQ1b1x1_3250941_XSPy9kDP/fd_Aur-03-Q1b1x1_2026-09-10_06-17-04_20.00sec_-0.00C_LIGHTs_0086.fits ########### Completed Aur-03-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

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