NMW transient search results

This analysis is done by the script util/transients/transient_factory_test31.sh /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs

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

Processing fields Cas-04-Q1b1x1

Processing complete!

Total number of candidates identified: 0

FITS images used in this processing run:

Field Cas-04-Q1b1x1 reference image: Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits
Field Cas-04-Q1b1x1 reference image: Cas-04-Q1b1x1_2026-07-21_23-21-38_20.00sec_5.00C_LIGHT_0111.fits
Field Cas-04-Q1b1x1 second-epoch image: Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
Field Cas-04-Q1b1x1 second-epoch image: Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.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
SEXTRACTOR_CONFIG_FILES_HIGH_PRIORITY_EXTRA= default.sex.telephoto_lens_vTTU
HIGH_PRIORITY_FIELDS= Sco6 Oph-08-Q1b1x1 Oph-08-Q2b1x1 Sco-04-Q1b1x1 Sco-04-Q2b1x1 Sgr-04-Q1b1x1 Sgr-04-Q2b1x1 242
STARMATCH_RADIUS_PIX= 5
SYSREM_ITERATIONS= 0
TELESCOP= 
TELESCOP_NAME_KNOWN_TO_VaST_FOR_FOV_DETERMINATION= 
UCAC5_PLATESOLVE_ITERATIONS= 2
FPACK_FULLY_CALIBRATED_IMAGE= no
#######################################
HOSTNAME= tau
USER= 
HOME= 
#######################################
SExtractor catalog cache: enabled, directory /data_ssd/NMW-TexasTech/vast_sextractor_cache
Reference image directory is set to /data_ssd/NMW-TexasTech/reference_imgs
VIZIER_SITE=vizier.cds.unistra.fr
GAIA_DR2_CLIENT=vizquery (lib/vizquery -> VizieR vizier.cds.unistra.fr)
INFO: MAKE_PNG_PLOTS is set to yes
FITS_FILE_EXT=fits
CALIBRATION_STATUS_PREFIX=
Fields in the data directory: 
Cas-04-Q1b1x1
#######################################
########### Starting Cas-04-Q1b1x1 ###########
Processing Cas-04-Q1b1x1
server tau has sufficient free disk space available: 463406 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 463406 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-21_23-21-38_20.00sec_5.00C_LIGHT_0111.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.png' -> 'transient_report/Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits_preview.png'

Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits


renamed 'Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.png' -> 'transient_report/Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits_preview.png'

Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.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= 492.5525
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 719.0413
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1327.1831
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 394.1287
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1305.7262
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 345.7565
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 2.6945
INFO:                  SECOND_EPOCH__SD_ratio= 0.140
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
ERROR: passing clouds (SD ratio=0.140 soft threshold=0.12)
----------------------------------------------
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 =     18.2900009155273 / [degC] Focuser temperature
AMBTEMP =                 16.2 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-10-03T23:06:43.9796861' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-10-04T04:06:43.9796861' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61317.1713423496 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-10-04T04:06:53.8831179' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61317.1714569791 / 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      =     359.998765480515 / [deg] RA of telescope" status=0
Record 32: "DEC     =     54.0000945487742 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =                61.83 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     35.1805555555556 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     1.13397289470994 / 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  = 'Cas-04'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '00 00 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+54 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  =                29489 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                29489 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     18.2900009155273 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     18.2900009155273 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 14.2 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 88.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=                906.6 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 16.2 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 32.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=                  0.0 / [kph] Wind gust" status=0
Record 61: "WINDSPD =                  0.0 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.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_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.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_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/d_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits :)

Spent 0.670138 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_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/d_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.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_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.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_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     19.2900009155273 / [degC] Focuser temperature
AMBTEMP =                 16.2 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-10-03T23:07:33.8845966' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-10-04T04:07:33.8845966' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61317.1719199535 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-10-04T04:07:43.7850322' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61317.1720345486 / 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      =      359.99876546985 / [deg] RA of telescope" status=0
Record 32: "DEC     =     54.0000944917663 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =                61.93 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     35.0305555555556 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     1.13291819478446 / 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  = 'Cas-04'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '00 00 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+54 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  =                29489 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                29489 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     19.2900009155273 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     19.2900009155273 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 14.2 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 88.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=                906.6 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 16.2 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 32.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=                  0.0 / [kph] Wind gust" status=0
Record 61: "WINDSPD =                  0.0 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.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_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.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_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/d_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits :)

Spent 0.824161 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_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/d_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.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_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.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_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
Dark frame used to calibrate the second-epoch images:



Flat field used to calibrate the second-epoch images:



after the calibration attempt:
SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
Previews of the CALIBRATED second-epoch images:


fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits



fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.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/Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-21_23-21-38_20.00sec_5.00C_LIGHT_0111.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
  
Last  image: 2461317.67145809 04.10.2026 04:06:43.979 UTC
WARNING: VaST exited with code 1 on the field Cas-04-Q1b1x1 as too few input images were matched to the reference image - wrong pointing? clouds? very bad focus?
Blind plate solve of the unmatched second-epoch image fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits to check the telescope pointing
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
WCS_IMAGE_NAME=wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
Field of view for the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits was not set. Trying to guess...
The guess is  605 arcmin.
No image with WCS calibration found for /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits .... Determining astrometry method...
Using the local copy of Astrometry.net software...
Choosing aperture...
Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
/data_ssd/NMW-TexasTech/workdir/vast_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/lib/make_outxyls_for_astrometric_calibration found 4012 high-SNR stars for plate solving
 
This service uses tools provided by Astrometry.net.
For more information visit http://astrometry.net/ 

######### Trying to solve plate assuming 605' field of view #########
 /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.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: "out645780.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out645780.axy"...
Field 1 did not solve (index index-4119.fits, field objects 1-10).
Field 1 did not solve (index index-4118.fits, field objects 1-10).
Field 1 did not solve (index index-4117.fits, field objects 1-10).
Field 1 did not solve (index index-4116.fits, field objects 1-10).
Field 1 did not solve (index index-4115.fits, field objects 1-10).
Field 1 did not solve (index index-4114.fits, field objects 1-10).
Field 1 did not solve (index index-4113.fits, field objects 1-10).
  log-odds ratio 59.5572 (7.33461e+25), 43 match, 0 conflict, 101 distractors, 366 index.
  RA,Dec = (0.0496712,53.9766), pixel scale 5.90828 arcsec/pix.
  Hit/miss:   Hit/miss: -------+---++--+++--+++-++----------+--+++--++-+-----+---++--+++--++------------+---+--++-+-----+---
Field 1: solved with index index-4112.fits.
Field 1 solved: writing to file ./out645780.solved to indicate this.
Field: out645780.xyls
Field center: (RA,Dec) = (359.948330, 53.978720) deg.
Field center: (RA H:M:S, Dec D:M:S) = (23:59:47.599, +53:58:43.392).
Field size: 15.8134 x 10.5799 degrees
Field rotation angle: up is 3.28667 degrees E of N
Field parity: neg

Inserting WCS header...  '/data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits' -> 'fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.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 Oct  3 23:15 fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
-rw-r--r-- 1 apache apache  12K Oct  3 23:15 out645780.wcs
Inserting WCS header (1st iteration local)...  Opening FITS image file fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits for reading...  done!
Creating new image file (wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits)...  done!
done!
All done!
done
The WCS header appears to be added with no errors in /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits (fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.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: "out645780.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out645780.axy"...
Only searching for solutions within 15.7367 degrees of RA,Dec (359.95,53.9795)
Field 1 did not solve (index index-4116.fits, field objects 1-100).
  log-odds ratio 23.0358 (1.00996e+10), 3 match, 0 conflict, 6 distractors, 45 index.
  RA,Dec = (0.0829915,53.9947), pixel scale 5.89064 arcsec/pix.
  Hit/miss:   Hit/miss: --+--+--+(best)--------+----------------------------------------------------------------------------------
Field 1: solved with index index-4115.fits.
Field 1 solved: writing to file ./out645780.solved to indicate this.
Field: out645780.xyls
Field center: (RA,Dec) = (359.945347, 53.979361) deg.
Field center: (RA H:M:S, Dec D:M:S) = (23:59:46.883, +53:58:45.701).
Field size: 15.7722 x 10.5716 degrees
Field rotation angle: up is 3.29847 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 Oct  3 23:15 fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
-rw-r--r-- 1 apache apache  12K Oct  3 23:15 out645780.wcs
Inserting WCS header (2nd iteration local)...  Opening FITS image file fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits for reading...  done!
Creating new image file (wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.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_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits"...
Found an existing WCS header, will try to verify it.
Extracting sources...
simplexy: found 23443 sources.
Solving...
Reading file "./wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.axy"...
Verifying WCS using indices with quads of size [63.7106, 955.06] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
 --> log-odds 20.0708
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 105.808 (8.95274e+45), 13 match, 0 conflict, 70 distractors, 26 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-------+---++------+--+-------+--------------------------------++------+------+-+(best)-----------------
 --> log-odds 105.808
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 217.661 (3.3801e+94), 29 match, 0 conflict, 209 distractors, 48 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-++----+--+++------++-+-------+-------------------------+------++------+------+-+-------+-+-------
 --> log-odds 217.661
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 371.889 (3.23164e+161), 48 match, 0 conflict, 260 distractors, 90 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-++----++++++++----++-++--+---+--+--------------+-------+-+----++------+------+-+-------+-+-----+-
 --> log-odds 371.889
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 705.991 (4.05417e+306), 101 match, 0 conflict, 600 distractors, 186 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-++--++++++++++-+--++++++++--++--+---+----------++----+++++---+++------+-+---++-+----+-++-+-----+-
 --> log-odds 705.991
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 1598.09 (inf), 203 match, 0 conflict, 613 distractors, 379 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-++--++++++++++-++++++++++++-++++++--++++-----++++----+++++---+++++----+++---+++++---+++++++--+++-
 --> log-odds 1598.09
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 2973.72 (inf), 418 match, 0 conflict, 1459 distractors, 731 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-++--++++++++++-++++++++++++-++++++--+++++++--++++++--+++++--++++++---++++---++++++--+++++++--++++
 --> log-odds 2973.72
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 5494.64 (inf), 800 match, 0 conflict, 2081 distractors, 1447 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-++--++++++++++-++++++++++++-++++++--+++++++--++++++-++++++--++++++---+++++--++++++--+++++++--++++
 --> log-odds 5494.64
Verifying WCS using indices with quads of size [63.7106, 955.06] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
 --> log-odds 20.0708
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 105.808 (8.95274e+45), 13 match, 0 conflict, 70 distractors, 26 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-------+---++------+--+-------+--------------------------------++------+------+-+(best)-----------------
 --> log-odds 105.808
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 217.661 (3.3801e+94), 29 match, 0 conflict, 209 distractors, 48 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-++----+--+++------++-+-------+-------------------------+------++------+------+-+-------+-+-------
 --> log-odds 217.661
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 371.889 (3.23164e+161), 48 match, 0 conflict, 260 distractors, 90 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-++----++++++++----++-++--+---+--+--------------+-------+-+----++------+------+-+-------+-+-----+-
 --> log-odds 371.889
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 705.991 (4.05417e+306), 101 match, 0 conflict, 600 distractors, 186 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-++--++++++++++-+--++++++++--++--+---+----------++----+++++---+++------+-+---++-+----+-++-+-----+-
 --> log-odds 705.991
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 1598.09 (inf), 203 match, 0 conflict, 613 distractors, 379 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-++--++++++++++-++++++++++++-++++++--++++-----++++----+++++---+++++----+++---+++++---+++++++--+++-
 --> log-odds 1598.09
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 2973.72 (inf), 418 match, 0 conflict, 1459 distractors, 731 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-++--++++++++++-++++++++++++-++++++--+++++++--++++++--+++++--++++++---++++---++++++--+++++++--++++
 --> log-odds 2973.72
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 5494.64 (inf), 800 match, 0 conflict, 2081 distractors, 1447 index.
  RA,Dec = (359.944,53.9786), pixel scale 5.98409 arcsec/pix.
  Hit/miss:   Hit/miss: ++-++--++++++++++-++++++++++++-++++++--+++++++--++++++-++++++--++++++---+++++--++++++--+++++++--++++
 --> log-odds 5494.64
Got 14 solutions.
Field: wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
Field center: (RA,Dec) = (359.945226, 53.979124) deg.
Field center: (RA H:M:S, Dec D:M:S) = (23:59:46.854, +53:58:44.846).
Field size: 15.7707 x 10.5737 degrees
Field rotation angle: up is 3.29289 degrees E of N
Field parity: neg
Creating new FITS file "./wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.new"...

renamed 'wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.new' -> 'wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits'
Checking if the catalog wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits.wcscat corresponding to the image wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits alredy exist and is non-empty...
Catalog wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits.wcscat corresponding to the image wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits was not found.
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
verification OK: wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
Generating wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits.wcscat from image00003.cat
Catalog wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits.wcscat corresponding to the image wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits created.
verification OK: wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
verification OK: wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
Image size: 941.2'x626.7'  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: 23:59:47.212 +53:58:47.66 J2000 4789.000 3195.000 

 ### Converting SExtractor-derived pixel positions to celestial coordinates using xy2sky from WCSTools ###
 ### Converted positions of 4602 stars ###
'wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits.wcscat' -> 'vast_debug_catalog_before_xy2sky_correction.cat.log'
'/data_ssd/NMW-TexasTech/workdir/vast_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/correct_sextractor_wcs_catalog_usingxy2sky665510.tmp' -> 'vast_debug_catalog_after_xy2sky_correction.cat.log'
The plate-solved (WCS-calibrated) image is saved to wcs_fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
###################################
# Check the image center offset between the reference and the blindly solved unmatched second-epoch image (pointing accuracy)
Reference image center 00:00:01.062 +54:00:02.05
Second-epoch image center 23:59:47.212 +53:58:47.66
Angular distance between the image centers 0.0397 deg.
###################################
The second-epoch image center is consistent with the reference image center (offset 0.0397 deg.) - the star matching failure is probably not a pointing problem
____ VaST output ____

--==VaST 1.0rc90==--

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

Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-21_23-21-38_20.00sec_5.00C_LIGHT_0111.fits is already a symlink and we do not allow symlinks on symlinks

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs)...  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/Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-21_23-21-38_20.00sec_5.00C_LIGHT_0111.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.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 Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits catalog from cache
SExtractor catalog cache: restored Cas-04-Q1b1x1_2026-07-21_23-21-38_20.00sec_5.00C_LIGHT_0111.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/Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
The above guess is based on the non-default gain value specified in default.sex by user
21_23-21-38_20.00sec_5.00C_LIGHT_0111.fits
The gain value (GAIN=0.370) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
The above guess is bautodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
Parent process says: we are done fork()ing.
ased on the non-default gain value specified in default.sex by user
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_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits > image00003.cat.sex_log 2>&1
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.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_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.8,6.8,6.1,7.5,8.2,8.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 6.9,6.9,6.2,7.6,8.3,9.0 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.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/Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-07-18T07:46:42.3488988
Setting observation time using DATE-OBS keyword: 2026-07-18T07:46:42.3488988

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-07-18T07:46:42.348
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits
Exposure 20 sec, 18.07.2026 07:46:42.348 UTC = JD(UTC) 2461239.82421699 mid. exp.
The reference image star   906.635  3968.483 is rejected, see bad_region.lst
SExtractor output filtering results:
 * passed selection: 33470, (33469 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 0
 * rejected inside rectangles defined in bad_region.lst: 1
 * rejected close to frame edge: 182
 * rejected as being too small (<1.9 pix): 0
 * rejected as being too large (>7.5 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): 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'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.55
Detection limit from the magnitude-SNR relation= -7.5  (4.0 sigma detection)
The simple faintest star detection limit= -9.6
80 percent brightest stars detection limit= -10.4
Selected detection limit= -10.4
Final detection limit= -10.4 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.06.4 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): 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'.
    14811 * detected, using  221/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000956, number_of_ambiguous_matches=32 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=14186 inliers=14186 rms 1.01 -> 0.23 pix, max corner correction 3.6 pix] fraction_of_ambiguous_matches= 0.000956, number_of_ambiguous_matches=32 
14186 * matched, [CVPOLY iter 2: order=1 pairs=14186 inliers=14186 rms 0.22 -> 0.22 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000896, number_of_ambiguous_matches=30 
14184 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=14184 inliers=14184 rms 0.18 -> 0.18 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000568, number_of_ambiguous_matches=19 
14183 * matched (3rd iteration). Success!
  rotation [degrees] =   4.993
    14811 stars detected, 14183 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 12544, N_manually_selected_comparison_stars = 0
Using 12544 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 12543 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00002*X_pix -0.00001*Y_pix -0.05444
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 12495 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.87
    34098 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  210644 kB used, 248324 kB peak, 65261712 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-10-04T04:06:43.9796861
Setting observation time using DATE-OBS keyword: 2026-10-04T04:06:43.9796861

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-10-04T04:06:43.979
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
SExtractor output filtering results:
 * passed selection: 4571
 * 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: 31
 * rejected as being too small (<1.7 pix): 0
 * rejected as being too large (>6.9 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): 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'.
     4571 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000323, number_of_ambiguous_matches=11 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=4512 inliers=4512 rms 0.36 -> 0.18 pix, max corner correction 1.7 pix] fraction_of_ambiguous_matches= 0.000323, number_of_ambiguous_matches=11 
4512 * matched, [CVPOLY iter 2: order=1 pairs=4512 inliers=4512 rms 0.18 -> 0.18 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000293, number_of_ambiguous_matches=10 
4511 * matched (2nd iteration). [CVPOLY iter 3: order=3 pairs=4511 inliers=4511 rms 0.12 -> 0.12 pix, max corner correction 0.6 pix] fraction_of_ambiguous_matches= 0.000117, number_of_ambiguous_matches=4 
4511 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.008
     4571 stars detected,  4511 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 4076, N_manually_selected_comparison_stars = 0
Using 4076 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 3363 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00016*X_pix +0.00010*Y_pix +1.07657
ERROR in magnitude calibration: fabs(lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 3363 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.64
 ERROR!!! Magnitude calibration failure. Dropping image. 
    34098 objects stored in memory (1000000 max.)
memory:  213096 kB used, 248324 kB peak, 65261712 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-10-04T04:07:33.8845966
Setting observation time using DATE-OBS keyword: 2026-10-04T04:07:33.8845966

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-10-04T04:07:33.884
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
SExtractor output filtering results:
 * passed selection: 3417
 * 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: 22
 * rejected as being too small (<1.7 pix): 0
 * rejected as being too large (>6.8 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 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'.
     3417 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000411, number_of_ambiguous_matches=14 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=3351 inliers=3351 rms 0.51 -> 0.12 pix, max corner correction 2.6 pix] fraction_of_ambiguous_matches= 0.000381, number_of_ambiguous_matches=13 
3351 * matched, [CVPOLY iter 2: order=1 pairs=3351 inliers=3351 rms 0.12 -> 0.12 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000293, number_of_ambiguous_matches=10 
3351 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=3351 inliers=3351 rms 0.12 -> 0.12 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000088, number_of_ambiguous_matches=3 
3351 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.029
     3417 stars detected,  3351 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 2958, N_manually_selected_comparison_stars = 0
Using 2958 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 2361 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00012*X_pix +0.00007*Y_pix +0.74560
ERROR in magnitude calibration: fabs(lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 2361 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.61
 ERROR!!! Magnitude calibration failure. Dropping image. 
    34098 objects stored in memory (1000000 max.)
memory:  213096 kB used, 248324 kB peak, 65261712 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 1 seconds
Done with measurements! =)

Total number of measurements 48281 (48281 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 6 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  1355 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  7004 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for   780 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for   757 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  4287 stars

done!  =)
TIMING select_aperture: 7 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: 14131 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 Cas-04-Q1b1x1 (less than 4 images processed)
exp_start= 18.07.2026 07:46:42.348  exp=   20.000  JD= 2461239.82421699  ap=  7.5  rotation=   0.000  *detected= 33470  *matched= 33470  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits
exp_start= 22.07.2026 04:21:38.993  exp=   20.000  JD= 2461243.68181705  ap=  6.4  rotation=   4.993  *detected= 14811  *matched= 14183  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-21_23-21-38_20.00sec_5.00C_LIGHT_0111.fits
exp_start= 04.10.2026 04:06:43.979  exp=   20.000  JD= 2461317.67145809  ap=  6.9  rotation=  -0.008  *detected=  4571  *matched=  4511  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
exp_start= 04.10.2026 04:07:33.884  exp=   20.000  JD= 2461317.67203569  ap=  6.8  rotation=  -0.029  *detected=  3417  *matched=  3351  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.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/Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-21_23-21-38_20.00sec_5.00C_LIGHT_0111.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
  
SExtractor catalog cache: saved Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits.cat to cache
SExtractor catalog cache: saved Cas-04-Q1b1x1_2026-07-21_23-21-38_20.00sec_5.00C_LIGHT_0111.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_vSTL
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-21_23-21-38_20.00sec_5.00C_LIGHT_0111.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
Last  image: 2461317.67145809 04.10.2026 04:06:43.979 UTC
ERROR running VaST on the field Cas-04-Q1b1x1 (less than 4 images processed)
exp_start= 18.07.2026 07:46:42.348  exp=   20.000  JD= 2461239.82421699  ap=  6.4  rotation=   0.000  *detected= 172058  *matched= 172058  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-18_02-46-42_20.00sec_-0.00C_LIGHTs_0246.fits
exp_start= 22.07.2026 04:21:38.993  exp=   20.000  JD= 2461243.68181705  ap=  4.7  rotation=   4.983  *detected= 121697  *matched= 114433  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Cas-04-Q1b1x1_2026-07-21_23-21-38_20.00sec_5.00C_LIGHT_0111.fits
exp_start= 04.10.2026 04:06:43.979  exp=   20.000  JD= 2461317.67145809  ap=  5.6  rotation=  -0.008  *detected= 34588  *matched= 32291  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-06-43_20.00sec_-0.00C_LIGHTs_0052.fits
exp_start= 04.10.2026 04:07:33.884  exp=   20.000  JD= 2461317.67203569  ap=  5.4  rotation=  -0.016  *detected= 26615  *matched= 24518  status=OK     /data_ssd/NMW-TexasTech/workdir//img_2026-10-03_CI_Cas-04-Q1b1x1_230824_TTUQ1b1x1_489742_xlNprFHs/fd_Cas-04-Q1b1x1_2026-10-03_23-07-33_20.00sec_-0.00C_LIGHTs_0053.fits
########### Completed Cas-04-Q1b1x1 ###########
The analysis was running at tau
We are allowed to update the exclusion list at tau host
Found ../exclusion_list_TTUQ1.txt
#### The exclusion list before filtering-out asteroids, bad pixels and adding Gaia sources ####
###################################################################################
renamed 'exclusion_list_index_html.txt_noasteroids' -> 'exclusion_list_index_html.txt'
renamed 'exclusion_list_index_html.txt_nohotpixels' -> 'exclusion_list_index_html.txt'
# Count candidates with no identification (that also don't look like hot pix)
Found 0 unidentified candidates (excluding asteroids, hot pixels and known variable stars).
###################################################################################
0 candidates found (excluding asteroids and hot pixels)
This does not look like a test run
###################################################################################
exclusion_list_gaiadr2.txt NOT FOUND
exclusion_list_apass.txt NOT FOUND
IS_THIS_TEST_RUN=NO  ALLOW_EXCLUSION_LIST_UPDATE= YES
#### Nothing to add to the exclusion list ####
The observatory MPC code is V36
############################################################
ls: cannot access 'planets.txt': No such file or directory
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT):
ls: cannot access 'moons.txt': No such file or directory
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT):
ls: cannot access 'spacecraft.txt': No such file or directory
############################################################
ls: cannot access 'comets.txt': No such file or directory
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
ls: cannot access 'asassn_transients_list.txt': No such file or directory
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
ls: cannot access 'tocp_transients_list.txt': No such file or directory

Profiling:

 CPU temperature: 97 C - WARNING