fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits
fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits
util/transients/transient_factory_test31.sh /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs
| Date (UTC) | JD(UTC) | mag. | R.A. & Dec.(J2000) | X & Y (pix) | Image | |
|---|---|---|---|---|---|---|
| Discovery image 1 | 2026 09 03.32453 | 2461286.82453 | 10.04 | 05:21:07.61 +23:38:20.3 | 3265 4234 | /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits |
| Discovery image 2 | 2026 09 03.32498 | 2461286.82498 | 10.05 | 05:21:07.63 +23:38:20.3 | 3266 4232 | /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits |
Mean magnitude and position on the discovery images:
2026 09 03.3248 2461286.8248 10.04 05:21:07.62 +23:38:20.3
181.48695 -7.48058 galactic Tau Second-epoch detections are separated by 0.2" and 2.8 pix This object is listed in tocp_transients_list.txt 0.9" TCP J05210763+2338194 2026-08-06.4109 11.2mag
The object was not found in VSX
The object was not found in ASASSN-V
The object was not found in astcheck.
online_id | N Tau | 05:21:07.62 +23:38:20.3 (user input) | 2026 (VSX @ VizieR) | N (VSX @ VizieR) | (position from user input)
Check this position in TNS. Manually check the ASAS-SN list of transients!
Search this object in SIMBAD.
Search this object in VizieR catalogs. WISE atlas Aladin Lite SNAD ZTF viewer
Online MPChecker may fail to identify bright comets! Please manually check the Seiichi Yoshida's and Gideon van Buitenen's pages.
| Date (UTC) | JD(UTC) | mag. | R.A. & Dec.(J2000) | X & Y (pix) | Image | |
|---|---|---|---|---|---|---|
| Discovery image 1 | 2026 09 03.32453 | 2461286.82453 | 10.19 | 05:21:07.63 +23:38:20.2 | 3265 4234 | /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits |
| Discovery image 2 | 2026 09 03.32498 | 2461286.82498 | 10.21 | 05:21:07.65 +23:38:19.8 | 3266 4232 | /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits |
Mean magnitude and position on the discovery images:
2026 09 03.3248 2461286.8248 10.20 05:21:07.64 +23:38:20.0
181.48707 -7.48056 galactic Tau Second-epoch detections are separated by 0.5" and 2.8 pix This object is listed in tocp_transients_list.txt 0.6" TCP J05210763+2338194 2026-08-06.4109 11.2mag
The object was not found in VSX
The object was not found in ASASSN-V
The object was not found in astcheck.
online_id | N Tau | 05:21:07.64 +23:38:20.0 (user input) | 2026 (VSX @ VizieR) | N (VSX @ VizieR) | (position from user input)
Check this position in TNS. Manually check the ASAS-SN list of transients!
Search this object in SIMBAD.
Search this object in VizieR catalogs. WISE atlas Aladin Lite SNAD ZTF viewer
Online MPChecker may fail to identify bright comets! Please manually check the Seiichi Yoshida's and Gideon van Buitenen's pages.
######## Processing parameters ######## AAVSO_COMMENT_STRING= NMW-TexasTech Camera-2 135mm f/2.2 telephoto lens + QHY600M CMOS ASTCHECK_ASTEROID_SEARCH_RADIUS_ARCSEC= BAD_REGION_FILE= /var/www/nmw_calibration/TTUQ2b1x1/TTUQ2_bad_region.lst CAMERA_SETTINGS= TTUQ2b1x1 CHECK_POINTING_ACCURACY= yes DARK_FRAMES_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ2b1x1/darks EXCLUSION_LIST= ../exclusion_list_TTUQ2.txt FILTER_BAD_IMG__MAX_APERTURE_STAR_SIZE_PIX= 12.5 FILTER_BAD_IMG__MAX_ELONGATION_AminusB_PIX= 0.55 FILTER_BAD_IMG__MIN_APERTURE_STAR_SIZE_PIX= 2.0 FILTER_BRIGHT_MAG_CUTOFF_TRANSIENT_SEARCH= -5 FILTER_FAINT_MAG_CUTOFF_TRANSIENT_SEARCH= 15.5 FLAT_FIELD_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ2b1x1/flats FRAME_EDGE_OFFSET_PIX= 600 GAIA_BAND_FOR_CATALOGED_SOURCE_CHECK= MAX_NEW_TO_REF_MEAN_IMG_VALUE_RATIO= 100 DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK= yes MAX_NEW_IMG_MEAN_VALUE= 25000 MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS= 0.18 MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS_SOFT_LIMIT= 0.12 MPC_CODE= V36 NMW_CALIBRATION= /var/www/nmw_calibration NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_HARD_LIMIT= 10000 NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_SOFT_LIMIT= 8000 OMP_NUM_THREADS= 3 ONLINE_MPCHECKER_BUTTON_ASTEROID_SEARCH_RADIUS_ARCMIN= PHOTOMETRIC_CALIBRATION= REQUIRE_PIX_SHIFT_BETWEEN_IMAGES_FOR_TRANSIENT_CANDIDATES= yes SEXTRACTOR_CONFIG_BRIGHTSTARPASS= default.sex.telephoto_lens_onlybrightstars_v1 SEXTRACTOR_CONFIG_FILES= default.sex.telephoto_lens_onlybrightstars_v1 default.sex.telephoto_lens_vSTL STARMATCH_RADIUS_PIX= 5 SYSREM_ITERATIONS= 0 TELESCOP= TELESCOP_NAME_KNOWN_TO_VaST_FOR_FOV_DETERMINATION= UCAC5_PLATESOLVE_ITERATIONS= 2 FPACK_FULLY_CALIBRATED_IMAGE= no ####################################### HOSTNAME= tau USER= HOME= ####################################### SExtractor catalog cache: enabled, directory /data_ssd/NMW-TexasTech/vast_sextractor_cache Reference image directory is set to /data_ssd/NMW-TexasTech/reference_imgs VIZIER_SITE=vizier.cds.unistra.fr GAIA_DR2_CLIENT=vizquery (lib/vizquery -> VizieR vizier.cds.unistra.fr) INFO: MAKE_PNG_PLOTS is set to yes FITS_FILE_EXT=fits CALIBRATION_STATUS_PREFIX= Fields in the data directory: Tau-04-Q2b1x1 ####################################### ########### Starting Tau-04-Q2b1x1 ########### Processing Tau-04-Q2b1x1 server tau has sufficient free disk space available: 155448 MB at /data_ssd/NMW-TexasTech/workdir server tau has sufficient free disk space available: 155448 MB at . Checking input images (2 new) REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits Small preview (one of the new images):
Large previews of the second-epoch (new) images:
MAKE_PNG_PLOTS=yes
renamed 'Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.png' -> 'transient_report/Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits_preview.png'
Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits
renamed 'Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.png' -> 'transient_report/Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits_preview.png'
Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.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= 599.0891 INFO: REFERENCE_EPOCH__FIRST_IMAGE_SD= 758.4070 INFO: SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 6094.4818 INFO: SECOND_EPOCH__FIRST_IMAGE_SD= 1132.0550 INFO: SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 6057.6401 INFO: SECOND_EPOCH__SECOND_IMAGE_SD= 1126.6985 ---------------------------------------------- INFO: ref_to_second_epoch_img_mean_ratio= 10.1729 INFO: SECOND_EPOCH__SD_ratio= 0.005 INFO: the new-to-reference mean image value ratio check is disabled (DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK=yes) - expected with a background-subtracted reference image ---------------------------------------------- Calibration settings: DARK_FRAMES_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ2b1x1/darks FLAT_FIELD_DIR_OR_FILE=/var/www/nmw_calibration/TTUQ2b1x1/flats EXPTIME = 20.0 / [s] Exposure duration SET-TEMP= 0.0 / [degC] CCD temperature setpoint CCD-TEMP= -0.0 / [degC] CCD temperature FOCTEMP = 24.6499996185303 / [degC] Focuser temperature AMBTEMP = 26.1 / [degC] Ambient air temperature Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.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= '2026-09-03T02:47:09.1350531' / Time of observation (local)" status=0 Record 12: "DATE-OBS= '2026-09-03T07:47:09.1350531' / Time of observation (UTC)" status=0 Record 13: "MJD-OBS = 61286.3244112846 / Modified Julian Date of observation" status=0 Record 14: "DATE-AVG= '2026-09-03T07:47:19.0336857' / Averaged midpoint time (UTC)" status=0 Record 15: "MJD-AVG = 61286.3245258448 / Modified Julian Date of averaged midpoint" status=0 Record 16: "XBINNING= 1 / X axis binning factor" status=0 Record 17: "YBINNING= 1 / Y axis binning factor" status=0 Record 18: "GAIN = 30 / Sensor gain" status=0 Record 19: "OFFSET = 30 / Sensor gain offset" status=0 Record 20: "XPIXSZ = 3.76 / [um] Pixel X axis size" status=0 Record 21: "YPIXSZ = 3.76 / [um] Pixel Y axis size" status=0 Record 22: "INSTRUME= 'QHY600M' / Imaging instrument name" status=0 Record 23: "CAMERAID= 'QHY600M-84137c4dbbbd119a9' / Imaging instrument identifier" status=0 Record 24: "SET-TEMP= 0.0 / [degC] CCD temperature setpoint" status=0 Record 25: "CCD-TEMP= -0.0 / [degC] CCD temperature" status=0 Record 26: "READOUTM= '2CMS-0' / Sensor readout mode" status=0 Record 27: "USBLIMIT= 50 / Camera-specific USB setting" status=0 Record 28: "TELESCOP= 'QHY600M-TTU2' / Name of telescope" status=0 Record 29: "FOCALLEN= 135.0 / [mm] Focal length" status=0 Record 30: "FOCRATIO= 2.2 / Focal ratio" status=0 Record 31: "RA = 83.0765391810812 / [deg] RA of telescope" status=0 Record 32: "DEC = 21.999888861903 / [deg] Declination of telescope" status=0 Record 33: "CENTALT = 15.1102777777778 / [deg] Altitude of telescope" status=0 Record 34: "CENTAZ = 73.3422222222222 / [deg] Azimuth of telescope" status=0 Record 35: "AIRMASS = 3.78417196187339 / Airmass at frame center (Gueymard 1993)" status=0 Record 36: "PIERSIDE= 'West' / Telescope pointing state" status=0 Record 37: "SITEELEV= 1009.5 / [m] Observation site elevation" status=0 Record 38: "SITELAT = 33.7482925 / [deg] Observation site latitude" status=0 Record 39: "SITELONG= -101.958319 / [deg] Observation site longitude" status=0 Record 40: "OBSERVER= 'Sokolovsky' / Observer name" status=0 Record 41: "OBSERVAT= 'TTU Skyview' / Observatory name" status=0 Record 42: "SITENAME= '' / Observatory site name" status=0 Record 43: "FWHEEL = 'Simulator' / Filter Wheel name" status=0 Record 44: "FILTER = 'CV' / Active filter name" status=0 Record 45: "OBJECT = 'Tau-04' / Name of the object of interest" status=0 Record 46: "OBJCTRA = '05 32 19' / [H M S] RA of imaged object" status=0 Record 47: "OBJCTDEC= '+22 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 = 20473 / [step] Focuser position" status=0 Record 51: "FOCUSPOS= 20473 / [step] Focuser position" status=0 Record 52: "FOCUSSZ = 0.0 / [um] Focuser step size" status=0 Record 53: "FOCTEMP = 24.6499996185303 / [degC] Focuser temperature" status=0 Record 54: "FOCUSTEM= 24.6499996185303 / [degC] Focuser temperature" status=0 Record 55: "DEWPOINT= 10.7 / [degC] Dew point" status=0 Record 56: "HUMIDITY= 38.0 / [percent] Relative humidity" status=0 Record 57: "PRESSURE= 899.7 / [hPa] Air pressure" status=0 Record 58: "AMBTEMP = 26.1 / [degC] Ambient air temperature" status=0 Record 59: "WINDDIR = 6.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0 Record 60: "WINDGUST= 7.200576 / [kph] Wind gust" status=0 Record 61: "WINDSPD = 4.00032 / [kph] Wind speed" status=0 Record 62: "ROWORDER= 'TOP-DOWN' / FITS Image Orientation" status=0 Record 63: "EQUINOX = 2000.0 / Equinox of celestial coordinate system" status=0 Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0 Record 65: "QHY_EXP = 20.000096 / [s] Actual exposure time" status=0 Record 66: "QHY_PP = 13888.0 / [ps] pixelPeriod" status=0 Record 67: "QHY_LP = 85000.0 / [ns] linePeriod" status=0 Record 68: "GPS_LP = 85000.0 / [ns] linePeriod" status=0 Record 69: "QHY_FP = 20000160.0 / [us] framePeriod" status=0 Record 70: "QHY_CPL = 6120.0 / clocksPerLine" status=0 Record 71: "QHY_LPF = 235295.0 / linesPerFrame" status=0 Record 72: "QHY_AET = 20000096.0 / [us] actualExposureTime" status=0 Record 73: "QHY_LEM = T / isLongExposureMode" status=0 Record 74: "QHY_OFF0= 3767.777 / [us] RollingShutterEndOffset row 0" status=0 Allocating memory for image, dark and result arrays... Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits 9576 6388 16 bitpix SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388 16 bitpix Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/d_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits :) Spent 0.480043 seconds renamed 'mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png' try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats MegaDivider v7 Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/d_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits 9576 6388 16 bitpix Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit 9576 6388 16 bitpix Avarage count on flat field image: 37096.658242 Minimal real count (from overscan): 5 Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits :) No overscan detected - all values seem high! (left_median=24199.0, right_median=29433.0) renamed 'mff_TTUQ2b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png' Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits EXPTIME = 20.0 / [s] Exposure duration SET-TEMP= 0.0 / [degC] CCD temperature setpoint CCD-TEMP= -0.0 / [degC] CCD temperature FOCTEMP = 24.5400009155273 / [degC] Focuser temperature AMBTEMP = 26.1 / [degC] Ambient air temperature Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.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= '2026-09-03T02:47:48.1884405' / Time of observation (local)" status=0 Record 12: "DATE-OBS= '2026-09-03T07:47:48.1884405' / Time of observation (UTC)" status=0 Record 13: "MJD-OBS = 61286.3248632872 / Modified Julian Date of observation" status=0 Record 14: "DATE-AVG= '2026-09-03T07:47:58.0833481' / Averaged midpoint time (UTC)" status=0 Record 15: "MJD-AVG = 61286.3249778124 / Modified Julian Date of averaged midpoint" status=0 Record 16: "XBINNING= 1 / X axis binning factor" status=0 Record 17: "YBINNING= 1 / Y axis binning factor" status=0 Record 18: "GAIN = 30 / Sensor gain" status=0 Record 19: "OFFSET = 30 / Sensor gain offset" status=0 Record 20: "XPIXSZ = 3.76 / [um] Pixel X axis size" status=0 Record 21: "YPIXSZ = 3.76 / [um] Pixel Y axis size" status=0 Record 22: "INSTRUME= 'QHY600M' / Imaging instrument name" status=0 Record 23: "CAMERAID= 'QHY600M-84137c4dbbbd119a9' / Imaging instrument identifier" status=0 Record 24: "SET-TEMP= 0.0 / [degC] CCD temperature setpoint" status=0 Record 25: "CCD-TEMP= -0.0 / [degC] CCD temperature" status=0 Record 26: "READOUTM= '2CMS-0' / Sensor readout mode" status=0 Record 27: "USBLIMIT= 50 / Camera-specific USB setting" status=0 Record 28: "TELESCOP= 'QHY600M-TTU2' / Name of telescope" status=0 Record 29: "FOCALLEN= 135.0 / [mm] Focal length" status=0 Record 30: "FOCRATIO= 2.2 / Focal ratio" status=0 Record 31: "RA = 83.0765391077184 / [deg] RA of telescope" status=0 Record 32: "DEC = 21.9998888640258 / [deg] Declination of telescope" status=0 Record 33: "CENTALT = 15.2436111111111 / [deg] Altitude of telescope" status=0 Record 34: "CENTAZ = 73.4244444444444 / [deg] Azimuth of telescope" status=0 Record 35: "AIRMASS = 3.75278655547293 / Airmass at frame center (Gueymard 1993)" status=0 Record 36: "PIERSIDE= 'West' / Telescope pointing state" status=0 Record 37: "SITEELEV= 1009.5 / [m] Observation site elevation" status=0 Record 38: "SITELAT = 33.7482925 / [deg] Observation site latitude" status=0 Record 39: "SITELONG= -101.958319 / [deg] Observation site longitude" status=0 Record 40: "OBSERVER= 'Sokolovsky' / Observer name" status=0 Record 41: "OBSERVAT= 'TTU Skyview' / Observatory name" status=0 Record 42: "SITENAME= '' / Observatory site name" status=0 Record 43: "FWHEEL = 'Simulator' / Filter Wheel name" status=0 Record 44: "FILTER = 'CV' / Active filter name" status=0 Record 45: "OBJECT = 'Tau-04' / Name of the object of interest" status=0 Record 46: "OBJCTRA = '05 32 19' / [H M S] RA of imaged object" status=0 Record 47: "OBJCTDEC= '+22 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 = 20473 / [step] Focuser position" status=0 Record 51: "FOCUSPOS= 20473 / [step] Focuser position" status=0 Record 52: "FOCUSSZ = 0.0 / [um] Focuser step size" status=0 Record 53: "FOCTEMP = 24.5400009155273 / [degC] Focuser temperature" status=0 Record 54: "FOCUSTEM= 24.5400009155273 / [degC] Focuser temperature" status=0 Record 55: "DEWPOINT= 10.7 / [degC] Dew point" status=0 Record 56: "HUMIDITY= 38.0 / [percent] Relative humidity" status=0 Record 57: "PRESSURE= 899.7 / [hPa] Air pressure" status=0 Record 58: "AMBTEMP = 26.1 / [degC] Ambient air temperature" status=0 Record 59: "WINDDIR = 6.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0 Record 60: "WINDGUST= 7.200576 / [kph] Wind gust" status=0 Record 61: "WINDSPD = 4.00032 / [kph] Wind speed" status=0 Record 62: "ROWORDER= 'TOP-DOWN' / FITS Image Orientation" status=0 Record 63: "EQUINOX = 2000.0 / Equinox of celestial coordinate system" status=0 Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0 Record 65: "QHY_EXP = 20.000096 / [s] Actual exposure time" status=0 Record 66: "QHY_PP = 13888.0 / [ps] pixelPeriod" status=0 Record 67: "QHY_LP = 85000.0 / [ns] linePeriod" status=0 Record 68: "GPS_LP = 85000.0 / [ns] linePeriod" status=0 Record 69: "QHY_FP = 20000160.0 / [us] framePeriod" status=0 Record 70: "QHY_CPL = 6120.0 / clocksPerLine" status=0 Record 71: "QHY_LPF = 235295.0 / linesPerFrame" status=0 Record 72: "QHY_AET = 20000096.0 / [us] actualExposureTime" status=0 Record 73: "QHY_LEM = T / isLongExposureMode" status=0 Record 74: "QHY_OFF0= 3767.777 / [us] RollingShutterEndOffset row 0" status=0 Allocating memory for image, dark and result arrays... Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits 9576 6388 16 bitpix SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388 16 bitpix Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/d_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits :) Spent 0.478590 seconds renamed 'mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png' try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats MegaDivider v7 Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/d_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits 9576 6388 16 bitpix Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit 9576 6388 16 bitpix Avarage count on flat field image: 37096.658242 Minimal real count (from overscan): 5 Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits :) No overscan detected - all values seem high! (left_median=24199.0, right_median=29433.0) renamed 'mff_TTUQ2b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png' Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.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_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Previews of the CALIBRATED second-epoch images:
fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits
fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits
Updating neverexclude_list.txt '/var/www/nmw_calibration/neverexclude_list.txt' -> './neverexclude_list.txt' Choosing bad regions list '/var/www/nmw_calibration/TTUQ2b1x1/TTUQ2_bad_region.lst' -> 'bad_region.lst' wait *------ default.sex.telephoto_lens_onlybrightstars_v1 ------* 'default.sex.telephoto_lens_onlybrightstars_v1' -> 'default.sex' Starting VaST with default.sex.telephoto_lens_onlybrightstars_v1 ./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits SExtractor catalog cache: saved Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.cat to cache SExtractor catalog cache: saved Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.cat to cache VaST run complete with default.sex.telephoto_lens_onlybrightstars_v1 The four input images were /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Checking WCS cache directory local_wcs_cache Checking WCS cache directory /mnt/usb/NMW_NG/solved_reference_images Found WCS cache directory /mnt/usb/NMW_NG/solved_reference_images Checking WCS cache directory /home/NMW_web_upload/solved_reference_images Checking WCS cache directory /dataX/kirx/NMW_NG_rt3_autumn2019/solved_reference_images The reference JD(UT) for computing planet and comet positions: 2461286.82452703 Re-using ../asassn_transients_list.txt '../asassn_transients_list.txt' -> 'asassn_transients_list.txt' Re-using ../tocp_transients_list.txt '../tocp_transients_list.txt' -> 'tocp_transients_list.txt' Re-using ../tns_transients_list.txt '../tns_transients_list.txt' -> 'tns_transients_list.txt' Plate-solving the images wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits exists and is non-empty wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits exists and is non-empty wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits exists and is non-empty wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits exists and is non-empty ################################### # fov_of_wcs_calibrated_image.sh output for wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits (1st reference image) verification OK: wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits Image size: 941.6'x627.1' 15.7(deg)x10.5(deg) 9576x6388 pix Image scale: 5.90"/pix along the X axis and 5.89"/pix along the Y axis Image center: 05:32:19.570 +21:59:57.74 J2000 4789.000 3195.000 ################################### The image scale is 5.90"/pix, setting the soft and hard astrometric limits for filtering second-epoch detections: 5.9" and 8.9" ################################### # fov_of_wcs_calibrated_image.sh output for wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits (1st new image) verification OK: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits Image size: 941.1'x624.6' 15.7(deg)x10.4(deg) 9576x6388 pix Image scale: 5.90"/pix along the X axis and 5.87"/pix along the Y axis Image center: 05:32:18.777 +21:59:38.56 J2000 4789.000 3195.000 ################################### ################################### # Check the image center offset between the reference and the first second-epoch image (pointing accuracy) Reference image center 05:32:19.570 +21:59:57.74 Second-epoch image center 05:32:18.777 +21:59:38.56 Angular distance between the image centers 0.0061 deg. Soft limit: 0.50 deg. Hard limit: 1.00 deg. ################################### ################################### # fov_of_wcs_calibrated_image.sh output for wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits (2nd new image) verification OK: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Image size: 941.0'x624.6' 15.7(deg)x10.4(deg) 9576x6388 pix Image scale: 5.90"/pix along the X axis and 5.87"/pix along the Y axis Image center: 05:32:17.958 +21:59:50.32 J2000 4789.000 3195.000 ################################### ################################### # Check the image center offset between the reference and the second second-epoch image (pointing accuracy) Reference image center 05:32:19.570 +21:59:57.74 Second-epoch image center 05:32:17.958 +21:59:50.32 Angular distance between the image centers 0.0066 deg. ################################### ################################### # Check the image center offset between the first and the second second-epoch image (shift should be applied between the second-epoch images) Second-epoch first image center 05:32:18.777 +21:59:38.56 Second-epoch second image center 05:32:17.958 +21:59:50.32 Angular distance between the image centers 0.00455 deg. ################################### Running solve_plate_with_UCAC5... Preparing for a parallel run Running util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2 /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits &> /tmp/tmp.xgI2d68G5g Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits Running util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2 /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits &> /tmp/tmp.SR0vlKqdlZ Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits Running util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits &> /tmp/tmp.KVcYLTZ5c2 Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits Running util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits &> /tmp/tmp.d1vt2bOZKg Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Calibrating the magnitude scale Found non-empty wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits ____ Start of magnitude calibration ____ PHOTOMETRIC_CALIBRATION=TYCHO2_V Calibrating the magnitude scale with Tycho-2 stars util/transients/transient_factory_test31.sh is checking for the presence of non-empty wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits and wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat wait (drain background util/solve_plate_with_UCAC5 jobs before Tycho-2 calibration -- avoids wcs_.fits write race) Tycho-2 catalog is found at lib/catalogs/tycho2 Tycho-2 catalog and the derived bright star exclusion list are ready Checking for the presence of non-empty wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits and wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat Found non-empty wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits and wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat The reference image (wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits) and catalog (wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat) found 'wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat' -> 'wcsmag.cat' Read 22997 stars from the SExtractor catalog wcsmag.cat Detected star coordinate range: RA 74.3514 to 91.9479 deg, Dec +16.4790 to +27.2884 deg Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19 Tycho-2 catalog search boundaries: RA 74.3514 to 91.9479 deg, Dec 16.4790 to 27.2884 deg Loaded 12406 Tycho-2 stars within the image boundaries (VT and BT non-zero). Relation between the catalog and instrumental magnitudes is written to calib.txt Stars used for magnitude calibration (good matches): 8976 out of 10160 total matches. Matched with Tycho-2 10160 out of 22997 detected stars. The calibration function type and coefficients are written to calib.txt_param util/calibrate_magnitude_scale 0.000000 1.000000 22.969200 a=0.000000 b=1.000000 c=22.969200 From vast_summary.log: estimated ref. image limiting mag.: -7.65 Updating vast_summary.log: Estimated ref. image limiting mag.: 15.32 Updated vast_limiting_magnitude.log with calibrated magnitudes Working... Please, PLEASE, be patient!!! All lightcurves processed! =) Estimated ref. image limiting mag.: 15.32
Lightcurve magnitude calibration plot:
Preparing per-reference-image forced-photometry calibration (method=tycho2 band=V) Read 22997 stars from the SExtractor catalog wcsmag.cat Detected star coordinate range: RA 74.3514 to 91.9479 deg, Dec +16.4790 to +27.2884 deg Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19 Tycho-2 catalog search boundaries: RA 74.3514 to 91.9479 deg, Dec 16.4790 to 27.2884 deg Loaded 12406 Tycho-2 stars within the image boundaries (VT and BT non-zero). Relation between the catalog and instrumental magnitudes is written to calib.txt Stars used for magnitude calibration (good matches): 8976 out of 10160 total matches. Matched with Tycho-2 10160 out of 22997 detected stars. util/calibrate_single_image_with_tycho2.sh: calibrated wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits via Tycho-2
Single-image forced-photometry magnitude calibration plot for wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits:
Forced-photometry filter: reusing the VaST-run aperture from image00001.cat.aperture for wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits Forced-photometry filter: calibrated wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits -> calib.txt_param_ref_wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits (aperture=6.0) Read 20916 stars from the SExtractor catalog wcsmag.cat Detected star coordinate range: RA 74.3773 to 91.9061 deg, Dec +16.4876 to +27.3008 deg Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19 Tycho-2 catalog search boundaries: RA 74.3773 to 91.9061 deg, Dec 16.4876 to 27.3008 deg Loaded 12329 Tycho-2 stars within the image boundaries (VT and BT non-zero). Relation between the catalog and instrumental magnitudes is written to calib.txt Stars used for magnitude calibration (good matches): 8847 out of 10017 total matches. Matched with Tycho-2 10017 out of 20916 detected stars. util/calibrate_single_image_with_tycho2.sh: calibrated wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits via Tycho-2
Single-image forced-photometry magnitude calibration plot for wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits:
Forced-photometry filter: reusing the VaST-run aperture from image00002.cat.aperture for wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits Forced-photometry filter: calibrated wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits -> calib.txt_param_ref_wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits (aperture=5.9) ____ End of magnitude calibration ____ Applying consolidated magnitude filters... Preparing the exclusion lists for this field Done with filtering Found 2 candidate transients before the final filtering. (Hard limit: 10000) Median FWHM seeing for isolated stars: 2.0 pix Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits 2.0 pix Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits 2.3 pix fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits 2.3 pix fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Limiting magnitude estimates: 15.3 mag. Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits 15.2 mag. Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits 12.2 mag. fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits 12.2 mag. fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits All-image limiting magnitude estimate: 12.2 (SNR ) 10.0 (80% of stars) with default.sex.telephoto_lens_onlybrightstars_v1 The first estimate is the magnitude of a star detected with a signal-to-noise ratio of following Karpov (2025, Acta Polytechnica, 65, 50). This value should be representative of the faintest stars clearly visible in the image. The brighter of the limiting magnitude estimates for the two second-epoch images is reported here. The second estimate is the 80th percentile of the magnitude distribution of stars detected on all four images. This value is representative of the faintest object that may enter the candidate transients list. The hard cut-off for the candidate transients is 15.5 mag. Waiting for UCAC5 plate solver wait cp: cannot create regular file 'local_wcs_cache/': Not a directory ############ /tmp/tmp.xgI2d68G5g (6) ############ Parsing command line arguments... WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits is already a symlink and we do not allow symlinks on symlinks The guess is based on the existing WCS header. Trying to blindly solve the plate (local solve-field or remote server)... /data_ssd/NMW-TexasTech/workdir/vast_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits 570.0 Entering WCS image calibration mode. ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits is already a symlink and we do not allow symlinks on symlinks FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits verification OK: /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits It's a known telescope with plate solutions that are supposed to be good. The input image /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits has a WCS header - will blindly trust it is good... '/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits' -> 'wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits' This WCS solution (astrometrynet) will be kept as is, not refit by util/solve_plate_with_UCAC5 FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits WCS_IMAGE_NAME=wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits WCS-calibrated image found: wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits Checking if the catalog wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat corresponding to the image wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits alredy exist and is non-empty... Catalog wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat corresponding to the image wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits found. The catalog is in the new format, as expected. The plate-solved (WCS-calibrated) image is saved to wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits WCS catalog name: wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat Excluding image region: -1.0 -1.0 1.0 1.0 (defined in bad_region.lst) Excluding image region: 7500.0 0.0 9576.0 6388.0 (defined in bad_region.lst) Excluding image region: 1122.0 1550.0 1124.0 1552.0 (defined in bad_region.lst) Excluding image region: 1637.0 2824.0 1639.0 2826.0 (defined in bad_region.lst) Excluding image region: 1831.0 2839.0 1833.0 2841.0 (defined in bad_region.lst) Excluding image region: 1905.0 4570.0 1907.0 4572.0 (defined in bad_region.lst) Excluding image region: 2012.0 4693.0 2014.0 4695.0 (defined in bad_region.lst) Excluding image region: 2397.0 4241.0 2399.0 4243.0 (defined in bad_region.lst) Excluding image region: 2679.0 2807.0 2681.0 2809.0 (defined in bad_region.lst) Excluding more image regions!.. (will not print them all) Excluded a total of 31 image regions (defined in bad_region.lst). SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=0, blended=2479, bad_region=3694, passed=22997 Got 22997 stars (including 17090 good ones) from the SExtractor catalog wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat util/solve_plate_with_UCAC5 got 22997 stars from the SExtractor catalog Updated FoV from the plate-solved image: 941.6' Seting catalog search parameters based on the expected field of view 941.6 arcmin UCAC5 catalog search parameters: catalog_search_parameters->search_radius_deg= 0.013078 (47.1 arcsec) catalog_search_parameters->brightest_mag= 1.00 catalog_search_parameters->faintest_mag= 13.50 catalog_search_parameters->search_radius_second_step_deg 0.010462 (37.7 arcsec) ITERATION 01 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.5 to 27.3) Done reading UCAC5 zone files... Matched 4775 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Correcting the measured astrometric positions... Accuracy estimation diagnostic: 4705 matched stars entering correct_measured_positions(), 4706 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.34" Removing outliers... Correcting the measured astrometric positions... Accuracy estimation diagnostic: 4705 matched stars entering correct_measured_positions(), 20056 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.33" ITERATION 02 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.5 to 27.3) Done reading UCAC5 zone files... Matched 4774 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Accuracy estimation diagnostic: 4705 matched stars entering correct_measured_positions(), 20056 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.34" Accuracy estimation diagnostic: 4705 matched stars entering correct_measured_positions(), 20056 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.38" Excluding outliers - 4705 stars left (next iteration limit 5175) Stop iterations. The field is successfully solved and matched with the astrometric catalog! :) SIP_REFIT: util/identify.sh trusts the WCS of wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway) WCS_QUALITY_DIAG: file=Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits N_match=4705 sigma_overall_arcsec=0.386 sigma_q1_arcsec=0.461 sigma_q2_arcsec=0.374 sigma_q3_arcsec=0.350 sigma_q4_arcsec=0.273 n_q1=1788 n_q2=376 n_q3=1844 n_q4=697 worst_quadrant_to_overall_ratio=1.193 The image catalog is written to wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat.ucac5 The DS9 region file with the matched stars is written to wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat.ds9.reg You may view it with the command: ds9 /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits -region wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat.ds9.reg The astrometric residuals vector field is written to wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat.astrometric_residuals Option '-n' not using photometric catalogs, just stick with astrometry opt '-i': 2 is the maximum number of iterations FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry ############ /tmp/tmp.SR0vlKqdlZ (6) ############ Parsing command line arguments... WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits is already a symlink and we do not allow symlinks on symlinks The guess is based on the existing WCS header. Trying to blindly solve the plate (local solve-field or remote server)... /data_ssd/NMW-TexasTech/workdir/vast_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits 570.0 Entering WCS image calibration mode. ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits is already a symlink and we do not allow symlinks on symlinks FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits verification OK: /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits It's a known telescope with plate solutions that are supposed to be good. The input image /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits has a WCS header - will blindly trust it is good... '/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits' -> 'wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits' This WCS solution (astrometrynet) will be kept as is, not refit by util/solve_plate_with_UCAC5 FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits WCS_IMAGE_NAME=wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits WCS-calibrated image found: wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits Checking if the catalog wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat corresponding to the image wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits alredy exist and is non-empty... Catalog wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat corresponding to the image wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits found. The catalog is in the new format, as expected. The plate-solved (WCS-calibrated) image is saved to wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits WCS catalog name: wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat Excluding image region: -1.0 -1.0 1.0 1.0 (defined in bad_region.lst) Excluding image region: 7500.0 0.0 9576.0 6388.0 (defined in bad_region.lst) Excluding image region: 1122.0 1550.0 1124.0 1552.0 (defined in bad_region.lst) Excluding image region: 1637.0 2824.0 1639.0 2826.0 (defined in bad_region.lst) Excluding image region: 1831.0 2839.0 1833.0 2841.0 (defined in bad_region.lst) Excluding image region: 1905.0 4570.0 1907.0 4572.0 (defined in bad_region.lst) Excluding image region: 2012.0 4693.0 2014.0 4695.0 (defined in bad_region.lst) Excluding image region: 2397.0 4241.0 2399.0 4243.0 (defined in bad_region.lst) Excluding image region: 2679.0 2807.0 2681.0 2809.0 (defined in bad_region.lst) Excluding more image regions!.. (will not print them all) Excluded a total of 31 image regions (defined in bad_region.lst). SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=0, blended=2320, bad_region=3377, passed=20916 Got 20916 stars (including 15475 good ones) from the SExtractor catalog wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat util/solve_plate_with_UCAC5 got 20916 stars from the SExtractor catalog Updated FoV from the plate-solved image: 941.6' Seting catalog search parameters based on the expected field of view 941.6 arcmin UCAC5 catalog search parameters: catalog_search_parameters->search_radius_deg= 0.013078 (47.1 arcsec) catalog_search_parameters->brightest_mag= 1.00 catalog_search_parameters->faintest_mag= 13.50 catalog_search_parameters->search_radius_second_step_deg 0.010462 (37.7 arcsec) ITERATION 01 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.5 to 27.3) Done reading UCAC5 zone files... Matched 4776 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Correcting the measured astrometric positions... Accuracy estimation diagnostic: 4707 matched stars entering correct_measured_positions(), 4708 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.46" Removing outliers... Correcting the measured astrometric positions... Accuracy estimation diagnostic: 4707 matched stars entering correct_measured_positions(), 18215 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.43" ITERATION 02 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.5 to 27.3) Done reading UCAC5 zone files... Matched 4777 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Accuracy estimation diagnostic: 4708 matched stars entering correct_measured_positions(), 18215 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.44" Accuracy estimation diagnostic: 4708 matched stars entering correct_measured_positions(), 18215 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.49" Excluding outliers - 4708 stars left (next iteration limit 5177) Stop iterations. The field is successfully solved and matched with the astrometric catalog! :) SIP_REFIT: util/identify.sh trusts the WCS of wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway) WCS_QUALITY_DIAG: file=Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits N_match=4708 sigma_overall_arcsec=0.515 sigma_q1_arcsec=0.605 sigma_q2_arcsec=0.498 sigma_q3_arcsec=0.464 sigma_q4_arcsec=0.402 n_q1=1784 n_q2=371 n_q3=1863 n_q4=690 worst_quadrant_to_overall_ratio=1.175 The image catalog is written to wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat.ucac5 The DS9 region file with the matched stars is written to wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat.ds9.reg You may view it with the command: ds9 /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits -region wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat.ds9.reg The astrometric residuals vector field is written to wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat.astrometric_residuals Option '-n' not using photometric catalogs, just stick with astrometry opt '-i': 2 is the maximum number of iterations FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry ############ /tmp/tmp.KVcYLTZ5c2 (6) ############ Parsing command line arguments... The minor axis of the CCD chip should be 24.0 mm based on the derived pixel size of 3.8 um Internal estimated FoV 605.3' The guess is based on the FOCALLEN keyword. Trying to blindly solve the plate (local solve-field or remote server)... /data_ssd/NMW-TexasTech/workdir/vast_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits 605.0 Entering WCS image calibration mode. ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.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_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits WCS_IMAGE_NAME=wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits WCS-calibrated image found: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits Checking if the catalog wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat corresponding to the image wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits alredy exist and is non-empty... Catalog wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat corresponding to the image wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits found. The catalog is in the new format, as expected. The plate-solved (WCS-calibrated) image is saved to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits WCS catalog name: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat Excluding image region: -1.0 -1.0 1.0 1.0 (defined in bad_region.lst) Excluding image region: 7500.0 0.0 9576.0 6388.0 (defined in bad_region.lst) Excluding image region: 1122.0 1550.0 1124.0 1552.0 (defined in bad_region.lst) Excluding image region: 1637.0 2824.0 1639.0 2826.0 (defined in bad_region.lst) Excluding image region: 1831.0 2839.0 1833.0 2841.0 (defined in bad_region.lst) Excluding image region: 1905.0 4570.0 1907.0 4572.0 (defined in bad_region.lst) Excluding image region: 2012.0 4693.0 2014.0 4695.0 (defined in bad_region.lst) Excluding image region: 2397.0 4241.0 2399.0 4243.0 (defined in bad_region.lst) Excluding image region: 2679.0 2807.0 2681.0 2809.0 (defined in bad_region.lst) Excluding more image regions!.. (will not print them all) Excluded a total of 31 image regions (defined in bad_region.lst). SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=0, blended=193, bad_region=527, passed=2357 Got 2357 stars (including 1677 good ones) from the SExtractor catalog wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat util/solve_plate_with_UCAC5 got 2357 stars from the SExtractor catalog Updated FoV from the plate-solved image: 941.1' Seting catalog search parameters based on the expected field of view 941.1 arcmin UCAC5 catalog search parameters: catalog_search_parameters->search_radius_deg= 0.013071 (47.1 arcsec) catalog_search_parameters->brightest_mag= 1.00 catalog_search_parameters->faintest_mag= 13.50 catalog_search_parameters->search_radius_second_step_deg 0.010457 (37.6 arcsec) ITERATION 01 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.6 to 27.3) Done reading UCAC5 zone files... Matched 1615 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Correcting the measured astrometric positions... Accuracy estimation diagnostic: 1595 matched stars entering correct_measured_positions(), 1596 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.60" Removing outliers... Correcting the measured astrometric positions... Accuracy estimation diagnostic: 1595 matched stars entering correct_measured_positions(), 1927 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.59" ITERATION 02 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.6 to 27.3) Done reading UCAC5 zone files... Matched 1614 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Accuracy estimation diagnostic: 1591 matched stars entering correct_measured_positions(), 1927 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.66" Accuracy estimation diagnostic: 1591 matched stars entering correct_measured_positions(), 1927 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.66" Excluding outliers - 1591 stars left (next iteration limit 1754) Stop iterations. The field is successfully solved and matched with the astrometric catalog! :) SIP_REFIT: SIP order 2 trial: matched=1591 robust_rms=6.568 arcsec worst_quadrant_rms=7.613 arcsec SIP_REFIT: SIP order 3 trial: matched=1591 robust_rms=0.794 arcsec worst_quadrant_rms=0.941 arcsec SIP_REFIT: SIP order 5 trial: matched=1591 robust_rms=0.577 arcsec worst_quadrant_rms=0.736 arcsec SIP_REFIT: selected SIP order 5 SIP_REFIT: order=5 matched=1591 robust_rms_before=1.534 arcsec robust_rms_before_corrected=0.688 arcsec robust_rms_after=0.577 arcsec worst_quadrant_rms_before=0.906 worst_quadrant_rms_after=0.736 verification OK: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits verification OK: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits Image size: 941.3'x624.7' 15.7(deg)x10.4(deg) 9576x6388 pix Image scale: 5.90"/pix along the X axis and 5.87"/pix along the Y axis Image center: 05:32:18.824 +21:59:37.33 J2000 4789.000 3195.000 ### Converting SExtractor-derived pixel positions to celestial coordinates using xy2sky from WCSTools ### ### Converted positions of 2357 stars ### 'wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat' -> 'vast_debug_catalog_before_xy2sky_correction.cat.log' '/data_ssd/NMW-TexasTech/workdir/vast_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/correct_sextractor_wcs_catalog_usingxy2sky1665028.tmp' -> 'vast_debug_catalog_after_xy2sky_correction.cat.log' SIP_REFIT: applied the refit solution (order 5, robust RMS 1.534 -> 0.577 arcsec) WCS_QUALITY_DIAG: file=fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits N_match=1591 sigma_overall_arcsec=0.599 sigma_q1_arcsec=0.601 sigma_q2_arcsec=0.696 sigma_q3_arcsec=0.745 sigma_q4_arcsec=0.510 n_q1=482 n_q2=309 n_q3=405 n_q4=395 worst_quadrant_to_overall_ratio=1.245 The image catalog is written to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat.ucac5 The DS9 region file with the matched stars is written to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat.ds9.reg You may view it with the command: ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits -region wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat.ds9.reg The astrometric residuals vector field is written to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat.astrometric_residuals Option '-n' not using photometric catalogs, just stick with astrometry opt '-i': 2 is the maximum number of iterations FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry ############ /tmp/tmp.d1vt2bOZKg (6) ############ Parsing command line arguments... The minor axis of the CCD chip should be 24.0 mm based on the derived pixel size of 3.8 um Internal estimated FoV 605.3' The guess is based on the FOCALLEN keyword. Trying to blindly solve the plate (local solve-field or remote server)... /data_ssd/NMW-TexasTech/workdir/vast_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits 605.0 Entering WCS image calibration mode. ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.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_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits WCS_IMAGE_NAME=wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits WCS-calibrated image found: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Checking if the catalog wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat corresponding to the image wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits alredy exist and is non-empty... Catalog wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat corresponding to the image wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits found. The catalog is in the new format, as expected. The plate-solved (WCS-calibrated) image is saved to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits WCS catalog name: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat Excluding image region: -1.0 -1.0 1.0 1.0 (defined in bad_region.lst) Excluding image region: 7500.0 0.0 9576.0 6388.0 (defined in bad_region.lst) Excluding image region: 1122.0 1550.0 1124.0 1552.0 (defined in bad_region.lst) Excluding image region: 1637.0 2824.0 1639.0 2826.0 (defined in bad_region.lst) Excluding image region: 1831.0 2839.0 1833.0 2841.0 (defined in bad_region.lst) Excluding image region: 1905.0 4570.0 1907.0 4572.0 (defined in bad_region.lst) Excluding image region: 2012.0 4693.0 2014.0 4695.0 (defined in bad_region.lst) Excluding image region: 2397.0 4241.0 2399.0 4243.0 (defined in bad_region.lst) Excluding image region: 2679.0 2807.0 2681.0 2809.0 (defined in bad_region.lst) Excluding more image regions!.. (will not print them all) Excluded a total of 31 image regions (defined in bad_region.lst). SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=0, blended=200, bad_region=538, passed=2372 Got 2372 stars (including 1672 good ones) from the SExtractor catalog wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat util/solve_plate_with_UCAC5 got 2372 stars from the SExtractor catalog Updated FoV from the plate-solved image: 941.0' Seting catalog search parameters based on the expected field of view 941.0 arcmin UCAC5 catalog search parameters: catalog_search_parameters->search_radius_deg= 0.013069 (47.0 arcsec) catalog_search_parameters->brightest_mag= 1.00 catalog_search_parameters->faintest_mag= 13.50 catalog_search_parameters->search_radius_second_step_deg 0.010456 (37.6 arcsec) ITERATION 01 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.6 to 27.3) Done reading UCAC5 zone files... Matched 1611 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Correcting the measured astrometric positions... Accuracy estimation diagnostic: 1588 matched stars entering correct_measured_positions(), 1590 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.60" Removing outliers... Correcting the measured astrometric positions... Accuracy estimation diagnostic: 1587 matched stars entering correct_measured_positions(), 1929 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.59" ITERATION 02 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.6 to 27.3) Done reading UCAC5 zone files... Matched 1611 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Accuracy estimation diagnostic: 1583 matched stars entering correct_measured_positions(), 1929 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.66" Accuracy estimation diagnostic: 1583 matched stars entering correct_measured_positions(), 1929 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.66" Excluding outliers - 1583 stars left (next iteration limit 1745) Stop iterations. The field is successfully solved and matched with the astrometric catalog! :) SIP_REFIT: SIP order 2 trial: matched=1583 robust_rms=6.516 arcsec worst_quadrant_rms=7.209 arcsec SIP_REFIT: SIP order 3 trial: matched=1583 robust_rms=0.756 arcsec worst_quadrant_rms=0.900 arcsec SIP_REFIT: SIP order 5 trial: matched=1583 robust_rms=0.560 arcsec worst_quadrant_rms=0.745 arcsec SIP_REFIT: selected SIP order 5 SIP_REFIT: order=5 matched=1583 robust_rms_before=1.415 arcsec robust_rms_before_corrected=0.677 arcsec robust_rms_after=0.560 arcsec worst_quadrant_rms_before=0.961 worst_quadrant_rms_after=0.745 verification OK: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits verification OK: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Image size: 941.1'x624.7' 15.7(deg)x10.4(deg) 9576x6388 pix Image scale: 5.90"/pix along the X axis and 5.87"/pix along the Y axis Image center: 05:32:17.992 +21:59:49.18 J2000 4789.000 3195.000 ### Converting SExtractor-derived pixel positions to celestial coordinates using xy2sky from WCSTools ### ### Converted positions of 2372 stars ### 'wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat' -> 'vast_debug_catalog_before_xy2sky_correction.cat.log' '/data_ssd/NMW-TexasTech/workdir/vast_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/correct_sextractor_wcs_catalog_usingxy2sky1665024.tmp' -> 'vast_debug_catalog_after_xy2sky_correction.cat.log' SIP_REFIT: applied the refit solution (order 5, robust RMS 1.415 -> 0.560 arcsec) WCS_QUALITY_DIAG: file=fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits N_match=1583 sigma_overall_arcsec=0.585 sigma_q1_arcsec=0.577 sigma_q2_arcsec=0.641 sigma_q3_arcsec=0.736 sigma_q4_arcsec=0.492 n_q1=485 n_q2=306 n_q3=399 n_q4=393 worst_quadrant_to_overall_ratio=1.258 The image catalog is written to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat.ucac5 The DS9 region file with the matched stars is written to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat.ds9.reg You may view it with the command: ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits -region wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat.ds9.reg The astrometric residuals vector field is written to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat.astrometric_residuals Option '-n' not using photometric catalogs, just stick with astrometry opt '-i': 2 is the maximum number of iterations FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry Saving the final (post-refit) wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits to local_wcs_cache/ 'wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits' -> 'local_wcs_cache/wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits' Saving the final (post-refit) wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits to local_wcs_cache/ 'wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits' -> 'local_wcs_cache/wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits' Saving the final (post-refit) wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits to local_wcs_cache/ 'wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits' -> 'local_wcs_cache/wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits' Saving the final (post-refit) wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits to local_wcs_cache/ 'wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits' -> 'local_wcs_cache/wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits' ################################### # Pre-local-correction WCS quality summary (see WCS_QUALITY_DIAG lines above) ref1=Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits sigma_overall=0.386 worst_q_ratio=1.193 ref2=Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits sigma_overall=0.515 worst_q_ratio=1.175 new1=fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits sigma_overall=0.599 worst_q_ratio=1.245 new2=fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits sigma_overall=0.585 worst_q_ratio=1.258 reference average sigma_overall=0.4505 worst_q_ratio=1.184 warn-on-ratio threshold: 2.0x reference ###################################
Astrometric residual vector field (catalog-matched stars):
plot_astrometric_residuals_xy.py: wrote wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378_astrometric_residuals.png (4705 matched stars from wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.35 arcsec)
plot_astrometric_residuals_xy.py: wrote wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035_astrometric_residuals.png (4708 matched stars from wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.47 arcsec)
plot_astrometric_residuals_xy.py: wrote wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336_astrometric_residuals.png (1591 matched stars from wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.48 arcsec)
plot_astrometric_residuals_xy.py: wrote wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337_astrometric_residuals.png (1583 matched stars from wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.46 arcsec)
Copying WCS-calibrated images back to input directory Saving fully-calibrated image wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image) 'wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits' Saving fully-calibrated image wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image) 'wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits' Preparing the HTML report for the field Tau-04-Q2b1x1 with default.sex.telephoto_lens_onlybrightstars_v1 make_report_in_HTML.sh Phase 1 (network queries): 9s Pre-generating preview images in parallel... Done pre-generating preview images. Pre-generating finding charts in parallel... Done pre-generating finding charts. make_report_in_HTML.sh Pre-generation: 1s xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Considering the candidate 30893_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 Preparing report for the candidate 30893_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Considering the candidate 19272_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 The candidate 19272_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 did not pass the final checks**** FOUND 05:46:56.46 +17:54:31.9 in the exclusion list exclusion_list.txt **** make_report_in_HTML.sh Phase 2 (HTML assembly): 0s make_report_in_HTML.sh TOTAL: 10s Prepared the HTML report for the field Tau-04-Q2b1x1 with default.sex.telephoto_lens_onlybrightstars_v1 *------ done with default.sex.telephoto_lens_onlybrightstars_v1 ------* #### The local exclusion list is exclusion_list_local.txt #### 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/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits SExtractor catalog cache: saved Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.cat to cache SExtractor catalog cache: saved Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.cat to cache VaST run complete with default.sex.telephoto_lens_vSTL The four input images were /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Checking WCS cache directory local_wcs_cache Found WCS cache directory local_wcs_cache Creating symlink local_wcs_cache/wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits Creating symlink local_wcs_cache/wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits Creating symlink local_wcs_cache/wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits Creating symlink local_wcs_cache/wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Checking WCS cache directory /mnt/usb/NMW_NG/solved_reference_images Found WCS cache directory /mnt/usb/NMW_NG/solved_reference_images Checking WCS cache directory /home/NMW_web_upload/solved_reference_images Checking WCS cache directory /dataX/kirx/NMW_NG_rt3_autumn2019/solved_reference_images Plate-solving the images wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits exists and is non-empty wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits exists and is non-empty wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits exists and is non-empty wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits exists and is non-empty ################################### # fov_of_wcs_calibrated_image.sh output for wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits (1st reference image) verification OK: wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits Image size: 941.6'x627.1' 15.7(deg)x10.5(deg) 9576x6388 pix Image scale: 5.90"/pix along the X axis and 5.89"/pix along the Y axis Image center: 05:32:19.570 +21:59:57.74 J2000 4789.000 3195.000 ################################### The image scale is 5.90"/pix, setting the soft and hard astrometric limits for filtering second-epoch detections: 5.9" and 8.9" ################################### # fov_of_wcs_calibrated_image.sh output for wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits (1st new image) verification OK: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits Image size: 941.3'x624.7' 15.7(deg)x10.4(deg) 9576x6388 pix Image scale: 5.90"/pix along the X axis and 5.87"/pix along the Y axis Image center: 05:32:18.824 +21:59:37.33 J2000 4789.000 3195.000 ################################### ################################### # Check the image center offset between the reference and the first second-epoch image (pointing accuracy) Reference image center 05:32:19.570 +21:59:57.74 Second-epoch image center 05:32:18.824 +21:59:37.33 Angular distance between the image centers 0.0064 deg. Soft limit: 0.50 deg. Hard limit: 1.00 deg. ################################### ################################### # fov_of_wcs_calibrated_image.sh output for wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits (2nd new image) verification OK: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Image size: 941.1'x624.7' 15.7(deg)x10.4(deg) 9576x6388 pix Image scale: 5.90"/pix along the X axis and 5.87"/pix along the Y axis Image center: 05:32:17.992 +21:59:49.18 J2000 4789.000 3195.000 ################################### ################################### # Check the image center offset between the reference and the second second-epoch image (pointing accuracy) Reference image center 05:32:19.570 +21:59:57.74 Second-epoch image center 05:32:17.992 +21:59:49.18 Angular distance between the image centers 0.0065 deg. ################################### ################################### # Check the image center offset between the first and the second second-epoch image (shift should be applied between the second-epoch images) Second-epoch first image center 05:32:18.824 +21:59:37.33 Second-epoch second image center 05:32:17.992 +21:59:49.18 Angular distance between the image centers 0.00460 deg. ################################### Running solve_plate_with_UCAC5... Preparing for a parallel run Running util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2 /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits &> /tmp/tmp.y2qn2tSGOM Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits Running util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2 /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits &> /tmp/tmp.sQPQUt1e2I Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits Running util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits &> /tmp/tmp.vfKVBIo5MA Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits Running util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits &> /tmp/tmp.E6gwt9OX7V Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Calibrating the magnitude scale Found non-empty wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits ____ Start of magnitude calibration ____ PHOTOMETRIC_CALIBRATION=TYCHO2_V Calibrating the magnitude scale with Tycho-2 stars util/transients/transient_factory_test31.sh is checking for the presence of non-empty wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits and wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat wait (drain background util/solve_plate_with_UCAC5 jobs before Tycho-2 calibration -- avoids wcs_ Discovery image 3 2026 09 03.32498 2461286.82498 9.73 05:46:56.44 +17:54:31.7 6841 0703 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits .fits write race) Tycho-2 catalog is found at lib/catalogs/tycho2 Tycho-2 catalog and the derived bright star exclusion list are ready Checking for the presence of non-empty wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits and wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat Found non-empty wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits and wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat The reference image (wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits) and catalog (wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat) found 'wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat' -> 'wcsmag.cat' Read 167968 stars from the SExtractor catalog wcsmag.cat Detected star coordinate range: RA 74.3408 to 91.9478 deg, Dec +16.4791 to +27.2941 deg Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19 Tycho-2 catalog search boundaries: RA 74.3408 to 91.9478 deg, Dec 16.4791 to 27.2941 deg Loaded 12414 Tycho-2 stars within the image boundaries (VT and BT non-zero). Relation between the catalog and instrumental magnitudes is written to calib.txt Stars used for magnitude calibration (good matches): 7145 out of 10502 total matches. Matched with Tycho-2 10502 out of 167968 detected stars. The calibration function type and coefficients are written to calib.txt_param util/calibrate_magnitude_scale 0.000000 1.000000 22.825500 a=0.000000 b=1.000000 c=22.825500 From vast_summary.log: estimated ref. image limiting mag.: -7.31 Updating vast_summary.log: Estimated ref. image limiting mag.: 15.52 Updated vast_limiting_magnitude.log with calibrated magnitudes Working... Please, PLEASE, be patient!!! All lightcurves processed! =) Estimated ref. image limiting mag.: 15.52
Lightcurve magnitude calibration plot:
Preparing per-reference-image forced-photometry calibration (method=tycho2 band=V) Read 167968 stars from the SExtractor catalog wcsmag.cat Detected star coordinate range: RA 74.3408 to 91.9478 deg, Dec +16.4791 to +27.2941 deg Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19 Tycho-2 catalog search boundaries: RA 74.3408 to 91.9478 deg, Dec 16.4791 to 27.2941 deg Loaded 12414 Tycho-2 stars within the image boundaries (VT and BT non-zero). Relation between the catalog and instrumental magnitudes is written to calib.txt Stars used for magnitude calibration (good matches): 7145 out of 10502 total matches. Matched with Tycho-2 10502 out of 167968 detected stars. util/calibrate_single_image_with_tycho2.sh: calibrated wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits via Tycho-2
Single-image forced-photometry magnitude calibration plot for wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits:
Forced-photometry filter: reusing the VaST-run aperture from image00001.cat.aperture for wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits Forced-photometry filter: calibrated wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits -> calib.txt_param_ref_wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits (aperture=4.5) Read 163013 stars from the SExtractor catalog wcsmag.cat Detected star coordinate range: RA 74.3370 to 91.9475 deg, Dec +16.4845 to +27.3051 deg Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19 Tycho-2 catalog search boundaries: RA 74.3370 to 91.9475 deg, Dec 16.4845 to 27.3051 deg Loaded 12419 Tycho-2 stars within the image boundaries (VT and BT non-zero). Relation between the catalog and instrumental magnitudes is written to calib.txt Stars used for magnitude calibration (good matches): 7184 out of 10475 total matches. Matched with Tycho-2 10475 out of 163013 detected stars. util/calibrate_single_image_with_tycho2.sh: calibrated wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits via Tycho-2
Single-image forced-photometry magnitude calibration plot for wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits:
Forced-photometry filter: reusing the VaST-run aperture from image00002.cat.aperture for wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits Forced-photometry filter: calibrated wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits -> calib.txt_param_ref_wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits (aperture=4.4) ____ End of magnitude calibration ____ Applying consolidated magnitude filters... Preparing the exclusion lists for this field Done with filtering Found 7 candidate transients before the final filtering. (Hard limit: 10000) Median FWHM seeing for isolated stars: 1.9 pix Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits 1.8 pix Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits 2.1 pix fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits 2.0 pix fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Limiting magnitude estimates: 15.5 mag. Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits 15.4 mag. Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits 12.8 mag. fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits 12.9 mag. fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits All-image limiting magnitude estimate: 12.8 (SNR ) 12.5 (80% of stars) with default.sex.telephoto_lens_vSTL The first estimate is the magnitude of a star detected with a signal-to-noise ratio of following Karpov (2025, Acta Polytechnica, 65, 50). This value should be representative of the faintest stars clearly visible in the image. The brighter of the limiting magnitude estimates for the two second-epoch images is reported here. The second estimate is the 80th percentile of the magnitude distribution of stars detected on all four images. This value is representative of the faintest object that may enter the candidate transients list. The hard cut-off for the candidate transients is 15.5 mag. Waiting for UCAC5 plate solver wait ############ /tmp/tmp.y2qn2tSGOM (6) ############ Parsing command line arguments... WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits is already a symlink and we do not allow symlinks on symlinks The guess is based on the existing WCS header. Trying to blindly solve the plate (local solve-field or remote server)... /data_ssd/NMW-TexasTech/workdir/vast_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits 570.0 Entering WCS image calibration mode. ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits is already a symlink and we do not allow symlinks on symlinks FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits verification OK: /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits It's a known telescope with plate solutions that are supposed to be good. The input image /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits has a WCS header - will blindly trust it is good... '/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits' -> 'wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits' This WCS solution (astrometrynet) will be kept as is, not refit by util/solve_plate_with_UCAC5 FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits WCS_IMAGE_NAME=wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits WCS-calibrated image found: wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits Checking if the catalog wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat corresponding to the image wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits alredy exist and is non-empty... Catalog wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat corresponding to the image wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits found. The catalog is in the new format, as expected. The plate-solved (WCS-calibrated) image is saved to wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits WCS catalog name: wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat Excluding image region: -1.0 -1.0 1.0 1.0 (defined in bad_region.lst) Excluding image region: 7500.0 0.0 9576.0 6388.0 (defined in bad_region.lst) Excluding image region: 1122.0 1550.0 1124.0 1552.0 (defined in bad_region.lst) Excluding image region: 1637.0 2824.0 1639.0 2826.0 (defined in bad_region.lst) Excluding image region: 1831.0 2839.0 1833.0 2841.0 (defined in bad_region.lst) Excluding image region: 1905.0 4570.0 1907.0 4572.0 (defined in bad_region.lst) Excluding image region: 2012.0 4693.0 2014.0 4695.0 (defined in bad_region.lst) Excluding image region: 2397.0 4241.0 2399.0 4243.0 (defined in bad_region.lst) Excluding image region: 2679.0 2807.0 2681.0 2809.0 (defined in bad_region.lst) Excluding more image regions!.. (will not print them all) Excluded a total of 31 image regions (defined in bad_region.lst). SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=28, blended=21684, bad_region=23036, passed=167940 Got 167940 stars (including 124901 good ones) from the SExtractor catalog wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat util/solve_plate_with_UCAC5 got 167940 stars from the SExtractor catalog Updated FoV from the plate-solved image: 941.6' Seting catalog search parameters based on the expected field of view 941.6 arcmin UCAC5 catalog search parameters: catalog_search_parameters->search_radius_deg= 0.013078 (47.1 arcsec) catalog_search_parameters->brightest_mag= 1.00 catalog_search_parameters->faintest_mag= 13.50 catalog_search_parameters->search_radius_second_step_deg 0.010462 (37.7 arcsec) ITERATION 01 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.5 to 27.3) Done reading UCAC5 zone files... Matched 4762 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Correcting the measured astrometric positions... Accuracy estimation diagnostic: 4714 matched stars entering correct_measured_positions(), 4714 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.34" Removing outliers... Correcting the measured astrometric positions... Accuracy estimation diagnostic: 4714 matched stars entering correct_measured_positions(), 150202 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.34" ITERATION 02 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.5 to 27.3) Done reading UCAC5 zone files... Matched 4763 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Accuracy estimation diagnostic: 4714 matched stars entering correct_measured_positions(), 150202 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.34" Accuracy estimation diagnostic: 4714 matched stars entering correct_measured_positions(), 150201 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.39" Excluding outliers - 4714 stars left (next iteration limit 5185) Stop iterations. The field is successfully solved and matched with the astrometric catalog! :) SIP_REFIT: wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits is a symbolic link - will not rewrite the WCS of whatever it points to, but will still refit the output catalog positions SIP_REFIT: util/identify.sh trusts the WCS of wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway) WCS_QUALITY_DIAG: file=Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits N_match=4714 sigma_overall_arcsec=0.388 sigma_q1_arcsec=0.472 sigma_q2_arcsec=0.371 sigma_q3_arcsec=0.345 sigma_q4_arcsec=0.297 n_q1=1719 n_q2=437 n_q3=1839 n_q4=719 worst_quadrant_to_overall_ratio=1.214 The image catalog is written to wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat.ucac5 The DS9 region file with the matched stars is written to wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat.ds9.reg You may view it with the command: ds9 /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits -region wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat.ds9.reg The astrometric residuals vector field is written to wcs_Tau-04-Q2b1x1_2025-12-23_01-27-09_20.00sec_-15.00C_LIGHT_0378.fits.wcscat.astrometric_residuals Option '-n' not using photometric catalogs, just stick with astrometry opt '-i': 2 is the maximum number of iterations FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry ############ /tmp/tmp.sQPQUt1e2I (6) ############ Parsing command line arguments... WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits is already a symlink and we do not allow symlinks on symlinks The guess is based on the existing WCS header. Trying to blindly solve the plate (local solve-field or remote server)... /data_ssd/NMW-TexasTech/workdir/vast_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits 570.0 Entering WCS image calibration mode. ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits is already a symlink and we do not allow symlinks on symlinks FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits verification OK: /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits It's a known telescope with plate solutions that are supposed to be good. The input image /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits has a WCS header - will blindly trust it is good... '/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits' -> 'wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits' This WCS solution (astrometrynet) will be kept as is, not refit by util/solve_plate_with_UCAC5 FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits WCS_IMAGE_NAME=wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits WCS-calibrated image found: wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits Checking if the catalog wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat corresponding to the image wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits alredy exist and is non-empty... Catalog wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat corresponding to the image wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits found. The catalog is in the new format, as expected. The plate-solved (WCS-calibrated) image is saved to wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits WCS catalog name: wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat Excluding image region: -1.0 -1.0 1.0 1.0 (defined in bad_region.lst) Excluding image region: 7500.0 0.0 9576.0 6388.0 (defined in bad_region.lst) Excluding image region: 1122.0 1550.0 1124.0 1552.0 (defined in bad_region.lst) Excluding image region: 1637.0 2824.0 1639.0 2826.0 (defined in bad_region.lst) Excluding image region: 1831.0 2839.0 1833.0 2841.0 (defined in bad_region.lst) Excluding image region: 1905.0 4570.0 1907.0 4572.0 (defined in bad_region.lst) Excluding image region: 2012.0 4693.0 2014.0 4695.0 (defined in bad_region.lst) Excluding image region: 2397.0 4241.0 2399.0 4243.0 (defined in bad_region.lst) Excluding image region: 2679.0 2807.0 2681.0 2809.0 (defined in bad_region.lst) Excluding more image regions!.. (will not print them all) Excluded a total of 31 image regions (defined in bad_region.lst). SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=36, blended=20219, bad_region=22244, passed=162977 Got 162977 stars (including 121992 good ones) from the SExtractor catalog wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat util/solve_plate_with_UCAC5 got 162977 stars from the SExtractor catalog Updated FoV from the plate-solved image: 941.6' Seting catalog search parameters based on the expected field of view 941.6 arcmin UCAC5 catalog search parameters: catalog_search_parameters->search_radius_deg= 0.013078 (47.1 arcsec) catalog_search_parameters->brightest_mag= 1.00 catalog_search_parameters->faintest_mag= 13.50 catalog_search_parameters->search_radius_second_step_deg 0.010462 (37.7 arcsec) ITERATION 01 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.5 to 27.3) Done reading UCAC5 zone files... Matched 4760 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Correcting the measured astrometric positions... Accuracy estimation diagnostic: 4706 matched stars entering correct_measured_positions(), 4706 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.44" Removing outliers... Correcting the measured astrometric positions... Accuracy estimation diagnostic: 4706 matched stars entering correct_measured_positions(), 145759 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.44" ITERATION 02 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.5 to 27.3) Done reading UCAC5 zone files... Matched 4760 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Accuracy estimation diagnostic: 4705 matched stars entering correct_measured_positions(), 145759 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.44" Accuracy estimation diagnostic: 4704 matched stars entering correct_measured_positions(), 145759 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.49" Excluding outliers - 4704 stars left (next iteration limit 5176) Stop iterations. The field is successfully solved and matched with the astrometric catalog! :) SIP_REFIT: wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits is a symbolic link - will not rewrite the WCS of whatever it points to, but will still refit the output catalog positions SIP_REFIT: util/identify.sh trusts the WCS of wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway) WCS_QUALITY_DIAG: file=Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits N_match=4704 sigma_overall_arcsec=0.497 sigma_q1_arcsec=0.615 sigma_q2_arcsec=0.464 sigma_q3_arcsec=0.445 sigma_q4_arcsec=0.412 n_q1=1720 n_q2=418 n_q3=1843 n_q4=723 worst_quadrant_to_overall_ratio=1.238 The image catalog is written to wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat.ucac5 The DS9 region file with the matched stars is written to wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat.ds9.reg You may view it with the command: ds9 /data_ssd/NMW-TexasTech/reference_imgs/Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits -region wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat.ds9.reg The astrometric residuals vector field is written to wcs_Tau-04-Q2b1x1_2026-02-21_20-27-39_20.00sec_-14.90C_LIGHT_0035.fits.wcscat.astrometric_residuals Option '-n' not using photometric catalogs, just stick with astrometry opt '-i': 2 is the maximum number of iterations FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry ############ /tmp/tmp.vfKVBIo5MA (6) ############ Parsing command line arguments... The minor axis of the CCD chip should be 24.0 mm based on the derived pixel size of 3.8 um Internal estimated FoV 605.3' The guess is based on the FOCALLEN keyword. Trying to blindly solve the plate (local solve-field or remote server)... /data_ssd/NMW-TexasTech/workdir/vast_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits 605.0 Entering WCS image calibration mode. ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.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_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits WCS_IMAGE_NAME=wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits WCS-calibrated image found: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits Checking if the catalog wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat corresponding to the image wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits alredy exist and is non-empty... Catalog wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat corresponding to the image wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits found. The catalog is in the new format, as expected. The plate-solved (WCS-calibrated) image is saved to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits WCS catalog name: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat Excluding image region: -1.0 -1.0 1.0 1.0 (defined in bad_region.lst) Excluding image region: 7500.0 0.0 9576.0 6388.0 (defined in bad_region.lst) Excluding image region: 1122.0 1550.0 1124.0 1552.0 (defined in bad_region.lst) Excluding image region: 1637.0 2824.0 1639.0 2826.0 (defined in bad_region.lst) Excluding image region: 1831.0 2839.0 1833.0 2841.0 (defined in bad_region.lst) Excluding image region: 1905.0 4570.0 1907.0 4572.0 (defined in bad_region.lst) Excluding image region: 2012.0 4693.0 2014.0 4695.0 (defined in bad_region.lst) Excluding image region: 2397.0 4241.0 2399.0 4243.0 (defined in bad_region.lst) Excluding image region: 2679.0 2807.0 2681.0 2809.0 (defined in bad_region.lst) Excluding more image regions!.. (will not print them all) Excluded a total of 31 image regions (defined in bad_region.lst). SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=0, no_mag_err=0, low_SNR=3, blended=656, bad_region=5229, passed=24461 Got 24461 stars (including 18675 good ones) from the SExtractor catalog wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat util/solve_plate_with_UCAC5 got 24461 stars from the SExtractor catalog Updated FoV from the plate-solved image: 941.3' Seting catalog search parameters based on the expected field of view 941.3 arcmin UCAC5 catalog search parameters: catalog_search_parameters->search_radius_deg= 0.013074 (47.1 arcsec) catalog_search_parameters->brightest_mag= 1.00 catalog_search_parameters->faintest_mag= 13.50 catalog_search_parameters->search_radius_second_step_deg 0.010459 (37.7 arcsec) ITERATION 01 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.4 to 27.3) Done reading UCAC5 zone files... Matched 4791 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Correcting the measured astrometric positions... Accuracy estimation diagnostic: 4718 matched stars entering correct_measured_positions(), 4718 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.55" Removing outliers... Correcting the measured astrometric positions... Accuracy estimation diagnostic: 4718 matched stars entering correct_measured_positions(), 20603 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.53" ITERATION 02 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.4 to 27.3) Done reading UCAC5 zone files... Matched 4792 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Accuracy estimation diagnostic: 4717 matched stars entering correct_measured_positions(), 20603 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.54" Accuracy estimation diagnostic: 4717 matched stars entering correct_measured_positions(), 20603 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.58" Excluding outliers - 4717 stars left (next iteration limit 5189) Stop iterations. The field is successfully solved and matched with the astrometric catalog! :) SIP_REFIT: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits is a symbolic link - will not rewrite the WCS of whatever it points to, but will still refit the output catalog positions SIP_REFIT: SIP order 2 trial: matched=4717 robust_rms=6.512 arcsec worst_quadrant_rms=7.072 arcsec SIP_REFIT: SIP order 3 trial: matched=4717 robust_rms=0.741 arcsec worst_quadrant_rms=0.975 arcsec SIP_REFIT: SIP order 5 trial: matched=4717 robust_rms=0.601 arcsec worst_quadrant_rms=0.879 arcsec SIP_REFIT: selected SIP order 5 SIP_REFIT: order=5 matched=4717 robust_rms_before=0.618 arcsec robust_rms_before_corrected=0.609 arcsec robust_rms_after=0.601 arcsec worst_quadrant_rms_before=0.852 worst_quadrant_rms_after=0.879 SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.852 arcsec) - keeping the original WCS_QUALITY_DIAG: file=fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits N_match=4717 sigma_overall_arcsec=0.581 sigma_q1_arcsec=0.575 sigma_q2_arcsec=0.587 sigma_q3_arcsec=0.842 sigma_q4_arcsec=0.463 n_q1=1381 n_q2=1090 n_q3=1037 n_q4=1209 worst_quadrant_to_overall_ratio=1.448 The image catalog is written to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat.ucac5 The DS9 region file with the matched stars is written to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat.ds9.reg You may view it with the command: ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits -region wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat.ds9.reg The astrometric residuals vector field is written to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits.wcscat.astrometric_residuals Option '-n' not using photometric catalogs, just stick with astrometry opt '-i': 2 is the maximum number of iterations FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry ############ /tmp/tmp.E6gwt9OX7V (6) ############ Parsing command line arguments... The minor axis of the CCD chip should be 24.0 mm based on the derived pixel size of 3.8 um Internal estimated FoV 605.3' The guess is based on the FOCALLEN keyword. Trying to blindly solve the plate (local solve-field or remote server)... /data_ssd/NMW-TexasTech/workdir/vast_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits 605.0 Entering WCS image calibration mode. ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.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_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits WCS_IMAGE_NAME=wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits WCS-calibrated image found: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Checking if the catalog wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat corresponding to the image wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits alredy exist and is non-empty... Catalog wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat corresponding to the image wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits found. The catalog is in the new format, as expected. The plate-solved (WCS-calibrated) image is saved to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits WCS catalog name: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat Excluding image region: -1.0 -1.0 1.0 1.0 (defined in bad_region.lst) Excluding image region: 7500.0 0.0 9576.0 6388.0 (defined in bad_region.lst) Excluding image region: 1122.0 1550.0 1124.0 1552.0 (defined in bad_region.lst) Excluding image region: 1637.0 2824.0 1639.0 2826.0 (defined in bad_region.lst) Excluding image region: 1831.0 2839.0 1833.0 2841.0 (defined in bad_region.lst) Excluding image region: 1905.0 4570.0 1907.0 4572.0 (defined in bad_region.lst) Excluding image region: 2012.0 4693.0 2014.0 4695.0 (defined in bad_region.lst) Excluding image region: 2397.0 4241.0 2399.0 4243.0 (defined in bad_region.lst) Excluding image region: 2679.0 2807.0 2681.0 2809.0 (defined in bad_region.lst) Excluding more image regions!.. (will not print them all) Excluded a total of 31 image regions (defined in bad_region.lst). SExtractor catalog parsing summary: zero_flux=0, no_flux_err=0, no_mag=1, no_mag_err=0, low_SNR=6, blended=736, bad_region=5423, passed=25414 Got 25414 stars (including 19361 good ones) from the SExtractor catalog wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat util/solve_plate_with_UCAC5 got 25414 stars from the SExtractor catalog Updated FoV from the plate-solved image: 941.1' Seting catalog search parameters based on the expected field of view 941.1 arcmin UCAC5 catalog search parameters: catalog_search_parameters->search_radius_deg= 0.013071 (47.1 arcsec) catalog_search_parameters->brightest_mag= 1.00 catalog_search_parameters->faintest_mag= 13.50 catalog_search_parameters->search_radius_second_step_deg 0.010457 (37.6 arcsec) ITERATION 01 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.4 to 27.3) Done reading UCAC5 zone files... Matched 4792 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Correcting the measured astrometric positions... Accuracy estimation diagnostic: 4723 matched stars entering correct_measured_positions(), 4723 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.54" Removing outliers... Correcting the measured astrometric positions... Accuracy estimation diagnostic: 4723 matched stars entering correct_measured_positions(), 21405 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.53" ITERATION 02 -- talking to VizieR, this might be slow! UCAC5 search strategy: trying local copy first Found a local copy of UCAC5 UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50 Reading UCAC5 zone files... Searching UCAC5 zones 532 to 588 (Dec 16.4 to 27.3) Done reading UCAC5 zone files... Matched 4793 stars with the local copy of UCAC5. The local UCAC5 search seems to be a success Accuracy estimation diagnostic: 4721 matched stars entering correct_measured_positions(), 21405 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.54" Accuracy estimation diagnostic: 4721 matched stars entering correct_measured_positions(), 21405 with non-zero local correction accuracy Estimated accuracy of the plate solution: 0.58" Excluding outliers - 4721 stars left (next iteration limit 5195) Stop iterations. The field is successfully solved and matched with the astrometric catalog! :) SIP_REFIT: wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits is a symbolic link - will not rewrite the WCS of whatever it points to, but will still refit the output catalog positions SIP_REFIT: SIP order 2 trial: matched=4721 robust_rms=6.531 arcsec worst_quadrant_rms=7.122 arcsec SIP_REFIT: SIP order 3 trial: matched=4721 robust_rms=0.746 arcsec worst_quadrant_rms=0.976 arcsec SIP_REFIT: SIP order 5 trial: matched=4721 robust_rms=0.597 arcsec worst_quadrant_rms=0.800 arcsec SIP_REFIT: selected SIP order 5 SIP_REFIT: order=5 matched=4721 robust_rms_before=0.615 arcsec robust_rms_before_corrected=0.603 arcsec robust_rms_after=0.597 arcsec worst_quadrant_rms_before=0.840 worst_quadrant_rms_after=0.800 SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.840 arcsec) - keeping the original WCS_QUALITY_DIAG: file=fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits N_match=4721 sigma_overall_arcsec=0.597 sigma_q1_arcsec=0.592 sigma_q2_arcsec=0.631 sigma_q3_arcsec=0.818 sigma_q4_arcsec=0.501 n_q1=1377 n_q2=1091 n_q3=1032 n_q4=1221 worst_quadrant_to_overall_ratio=1.369 The image catalog is written to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat.ucac5 The DS9 region file with the matched stars is written to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat.ds9.reg You may view it with the command: ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits -region wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat.ds9.reg The astrometric residuals vector field is written to wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits.wcscat.astrometric_residuals Option '-n' not using photometric catalogs, just stick with astrometry opt '-i': 2 is the maximum number of iterations FORCED_PHOTOMETRY_CALIBRATION_METHOD=tycho2 - not using remote photometric catalogs, just stick with astrometry Skipping WCS quality comparison: not the first SExtractor pass (default.sex.telephoto_lens_vSTL) Copying WCS-calibrated images back to input directory Saving fully-calibrated image wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image) The destination file is already there - not rewriting /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits Saving fully-calibrated image wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image) The destination file is already there - not rewriting /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Preparing the HTML report for the field Tau-04-Q2b1x1 with default.sex.telephoto_lens_vSTL make_report_in_HTML.sh Phase 1 (network queries): 11s Pre-generating preview images in parallel... Done pre-generating preview images. Pre-generating finding charts in parallel... Done pre-generating finding charts. make_report_in_HTML.sh Pre-generation: 0s xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Considering the candidate 189044_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 The candidate 189044_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 did not pass the final checksRejecting candidate due to large distance (17.9") between the two second-epoch detections xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Considering the candidate 189684_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 The candidate 189684_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 did not pass the final checks Discovery image 2 2026 09 03.32498 2461286.82498 12.75 05:24:17.86 +18:03:32.0 3587 0841 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Rejecting candidate due to large distance (17.1") between the two second-epoch detections xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Considering the candidate 189744_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 Preparing report for the candidate 189744_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Considering the candidate 194821_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 The candidate 194821_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 did not pass the final checks Discovery image 2 2026 09 03.32498 2461286.82498 10.01 05:25:45.18 +22:01:33.3 3875 3235 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits **** FOUND 05:30:50.70 +22:27:24.9 in the exclusion list exclusion_list_bsc.txt **** xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Considering the candidate 196529_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 The candidate 196529_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 did not pass the final checks Discovery image 2 2026 09 03.32498 2461286.82498 12.20 05:30:50.67 +22:27:25.3 4592 3477 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits **** FOUND 05:37:00.62 +20:46:45.7 in the exclusion list exclusion_list.txt **** xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Considering the candidate 196532_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 The candidate 196532_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 did not pass the final checks Discovery image 2 2026 09 03.32498 2461286.82498 12.47 05:37:00.61 +20:46:45.6 5436 2450 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Rejecting candidate due to large distance (17.2") between the two second-epoch detections xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Considering the candidate 120168_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 The candidate 120168_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337 did not pass the final checks Discovery image 2 2026 09 03.32498 2461286.82498 12.80 05:18:31.07 +17:54:23.0 2750 0776 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits **** FOUND 05:46:56.42 +17:54:32.5 in the exclusion list exclusion_list.txt **** make_report_in_HTML.sh Phase 2 (HTML assembly): 0s make_report_in_HTML.sh TOTAL: 11s Prepared the HTML report for the field Tau-04-Q2b1x1 with default.sex.telephoto_lens_vSTL *------ done with default.sex.telephoto_lens_vSTL ------* #### The local exclusion list is exclusion_list_local.txt #### Source monitoring: measuring positions from /data_ssd/NMW-TexasTech/workdir/img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/monitoring_positions.txt Read 24464 stars from the SExtractor catalog wcsmag.cat Detected star coordinate range: RA 74.2513 to 91.7460 deg, Dec +16.4376 to +27.2818 deg Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19 Tycho-2 catalog search boundaries: RA 74.2513 to 91.7460 deg, Dec 16.4376 to 27.2818 deg Loaded 12196 Tycho-2 stars within the image boundaries (VT and BT non-zero). Relation between the catalog and instrumental magnitudes is written to calib.txt Stars used for magnitude calibration (good matches): 8995 out of 9273 total matches. Matched with Tycho-2 9273 out of 24464 detected stars. util/calibrate_single_image_with_tycho2.sh: calibrated wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits via Tycho-2 util/pixel_flux_airmass_correction processing wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits Observation time (mid-exposure, UTC): JD 2461286.82453 (FITS header) Observing site: lat= +33.748292 deg lon= -101.958319 deg east-positive (SITELAT/SITELONG FITS header keywords) Frame center (pixel 4788.5 3194.5): RA= 83.07756 deg Dec= +21.99286 deg Frame center: alt= +15.384 deg az= 76.201 deg airmass= 3.7069 Header cross-check: CENTALT= 15.110 deg (difference +0.274 deg) Header cross-check: AIRMASS= 3.7842 (we compute 3.7069) Airmass zero-point fit: OK k= +0.2465 +/- 0.0034 mag/airmass N= 5087 airmass span 2.4360-7.4610 scatter 0.2339 mag Source monitoring: airmass zero-point for wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits: OK +1.030891 -0.246543 3.7069 +0.2465 5087 5.0249 0.2339 2.4360 7.4610 Forced photometry (list mode): image=wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits list=monitoring_pixlist1642518.tmp aperture=4.5 Image size: 9576 x 6388 Excluding image region: -1.0 -1.0 1.0 1.0 (defined in bad_region.lst) Excluding image region: 7500.0 0.0 9576.0 6388.0 (defined in bad_region.lst) Excluding image region: 1122.0 1550.0 1124.0 1552.0 (defined in bad_region.lst) Excluding image region: 1637.0 2824.0 1639.0 2826.0 (defined in bad_region.lst) Excluding image region: 1831.0 2839.0 1833.0 2841.0 (defined in bad_region.lst) Excluding image region: 1905.0 4570.0 1907.0 4572.0 (defined in bad_region.lst) Excluding image region: 2012.0 4693.0 2014.0 4695.0 (defined in bad_region.lst) Excluding image region: 2397.0 4241.0 2399.0 4243.0 (defined in bad_region.lst) Excluding image region: 2679.0 2807.0 2681.0 2809.0 (defined in bad_region.lst) Excluding more image regions!.. (will not print them all) Excluded a total of 31 image regions (defined in bad_region.lst). Saturation level: 57000.0 Calibration (from calib.txt_param_monitoring, fit_function=3): cal_mag = 0.000000 * x^2 + 1.000000 * x + 21.431100 Forced photometry: center=(3264.62, 4233.88) aperture=4.5 Annulus: inner=9.00 outer=22.50 Background annulus: 1338 pixels Iterative clipping converged after 1 iterations, 1335/1338 pixels remain SExtractor background: mode=5538.31 median=5535.00 mean=5532.79 sigma=111.47 -> bg=5538.31 (1335 pixels) Aperture sum=129585.52 N_eff=15.9043 Net flux=41502.50 noise=444.56 SNR=93.36 Instrumental magnitude: -11.5452 Calibrated magnitude: 9.8859 Source monitoring: airmass zero-point term applied to the measurements on wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits Source monitoring: 1 position(s) measured on wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-09_20.00sec_-0.00C_LIGHT_0336.fits (aperture 4.5 pix) Read 25421 stars from the SExtractor catalog wcsmag.cat Detected star coordinate range: RA 74.2522 to 91.7449 deg, Dec +16.4447 to +27.2834 deg Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.00 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.01 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.02 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.03 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.04 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.05 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.06 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.07 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.08 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.09 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.10 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.11 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.12 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.13 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.14 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.15 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.16 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.17 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.18 Reading Tycho2 catalog file lib/catalogs/tycho2/tyc2.dat.19 Tycho-2 catalog search boundaries: RA 74.2522 to 91.7449 deg, Dec 16.4447 to 27.2834 deg Loaded 12196 Tycho-2 stars within the image boundaries (VT and BT non-zero). Relation between the catalog and instrumental magnitudes is written to calib.txt Stars used for magnitude calibration (good matches): 9159 out of 9444 total matches. Matched with Tycho-2 9444 out of 25421 detected stars. util/calibrate_single_image_with_tycho2.sh: calibrated wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits via Tycho-2 util/pixel_flux_airmass_correction processing wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Observation time (mid-exposure, UTC): JD 2461286.82498 (FITS header) Observing site: lat= +33.748292 deg lon= -101.958319 deg east-positive (SITELAT/SITELONG FITS header keywords) Frame center (pixel 4788.5 3194.5): RA= 83.07409 deg Dec= +21.99615 deg Frame center: alt= +15.519 deg az= 76.268 deg airmass= 3.6766 Header cross-check: CENTALT= 15.244 deg (difference +0.275 deg) Header cross-check: AIRMASS= 3.7528 (we compute 3.6766) Airmass zero-point fit: OK k= +0.2513 +/- 0.0033 mag/airmass N= 5259 airmass span 2.3653-6.9665 scatter 0.2369 mag Source monitoring: airmass zero-point for wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits: OK +1.041502 -0.251289 3.6766 +0.2513 5259 4.6012 0.2369 2.3653 6.9665 Forced photometry (list mode): image=wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits list=monitoring_pixlist1642518.tmp aperture=4.4 Image size: 9576 x 6388 Excluding image region: -1.0 -1.0 1.0 1.0 (defined in bad_region.lst) Excluding image region: 7500.0 0.0 9576.0 6388.0 (defined in bad_region.lst) Excluding image region: 1122.0 1550.0 1124.0 1552.0 (defined in bad_region.lst) Excluding image region: 1637.0 2824.0 1639.0 2826.0 (defined in bad_region.lst) Excluding image region: 1831.0 2839.0 1833.0 2841.0 (defined in bad_region.lst) Excluding image region: 1905.0 4570.0 1907.0 4572.0 (defined in bad_region.lst) Excluding image region: 2012.0 4693.0 2014.0 4695.0 (defined in bad_region.lst) Excluding image region: 2397.0 4241.0 2399.0 4243.0 (defined in bad_region.lst) Excluding image region: 2679.0 2807.0 2681.0 2809.0 (defined in bad_region.lst) Excluding more image regions!.. (will not print them all) Excluded a total of 31 image regions (defined in bad_region.lst). Saturation level: 57000.0 Calibration (from calib.txt_param_monitoring, fit_function=3): cal_mag = 0.000000 * x^2 + 1.000000 * x + 21.430500 Forced photometry: center=(3266.40, 4231.74) aperture=4.4 Annulus: inner=8.80 outer=22.00 Background annulus: 1275 pixels Iterative clipping converged after 1 iterations, 1273/1275 pixels remain SExtractor background: mode=5496.42 median=5496.00 mean=5495.72 sigma=110.57 -> bg=5496.42 (1273 pixels) Aperture sum=123363.55 N_eff=15.2053 Net flux=39788.80 noise=431.17 SNR=92.28 Instrumental magnitude: -11.4994 Calibrated magnitude: 9.9311 Source monitoring: airmass zero-point term applied to the measurements on wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits Source monitoring: 1 position(s) measured on wcs_fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits (aperture 4.4 pix) ########### Completed Tau-04-Q2b1x1 ########### The analysis was running at tau We are allowed to update the exclusion list at tau host Found ../exclusion_list_TTUQ2.txt #### The exclusion list before filtering-out asteroids, bad pixels and adding Gaia sources #### 05:21:07.62 +23:38:20.3 05:21:07.64 +23:38:20.0 ################################################################################### 05:21:07.62 +23:38:20.3 -- not an asteroid (will add it to exclusion list) 05:21:07.64 +23:38:20.0 -- not an asteroid (will add it to exclusion list) renamed 'exclusion_list_index_html.txt_noasteroids' -> 'exclusion_list_index_html.txt' 05:21:07.62 +23:38:20.3 -- does not seem to be a hot pixel (will add it to exclusion list) 05:21:07.64 +23:38:20.0 -- does not seem to be a hot pixel (will add it to exclusion list) 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) 05:21:07.62 +23:38:20.3 -- a known object 05:21:07.64 +23:38:20.0 -- a known object Found 0 unidentified candidates (excluding asteroids, hot pixels and known variable stars). ################################################################################### 2 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 #### Adding the following to the exclusion list #### 05:21:07.62 +23:38:20.3 05:21:07.64 +23:38:20.0 #################################################### The observatory MPC code is V36 ############################################################ Positions of planets computed with util/planet_finder/main.py for JD(UT)2461286.82452703 -observatory V36 11:13:05.60 +06:34:37.3 Mercury (-1.2mag) 13:25:39.19 -12:57:49.1 Venus (-4.6mag) 07:03:11.44 +23:12:49.1 Mars (1.2mag) 09:05:45.00 +17:11:23.5 Jupiter (-1.8mag) 00:52:36.83 +02:44:56.7 Saturn (0.5mag) 04:13:36.62 +21:01:47.4 Uranus (5.7mag) 00:14:06.93 -00:00:43.7 Neptune (7.7mag) 20:25:52.64 -23:38:39.4 Pluto (14.5mag) 03:37:52.30 +24:22:05.0 Moon (-10.7mag) -rw-r--r-- 1 apache apache 363 Sep 3 05:54 planets.txt ############################################################ Positions of selected moons from JPL HORIZONS for JD(UT)2461286.82452703: 09:05:52.14 +17:10:49.8 Io (6.2mag) 09:05:47.76 +17:11:11.2 Europa (6.3mag) 09:05:34.18 +17:12:18.7 Ganymede (5.7mag) 09:05:34.16 +17:12:14.9 Callisto (6.9mag) 09:03:24.21 +17:26:02.8 Himalia (15.7mag) 09:05:48.69 +17:11:07.2 Thebe (16.6mag) 09:03:03.30 +17:20:18.1 Elara (17.7mag) 09:09:43.66 +16:40:13.4 Pasiphae (17.9mag) 09:07:07.24 +17:28:05.4 Carme (19.0mag) 00:52:48.51 +02:44:49.8 Titan (8.3mag) 00:52:33.12 +02:44:40.9 Rhea (9.6mag) 00:53:01.53 +02:47:39.0 Iapetus (11.0mag) 00:52:37.23 +02:44:12.9 Hyperion (14.3mag) 00:51:27.84 +02:35:04.0 Phoebe (16.4mag) -rw-r--r-- 1 apache apache 568 Sep 3 05:54 moons.txt ############################################################ Positions of selected spacecraft from JPL HORIZONS for JD(UT)2461286.82452703: 21:33:27.74 -03:04:53.1 JWST 12:30:31.51 +51:13:16.7 Chandra 11:03:03.78 -59:29:25.5 XMM-Newton -rw-r--r-- 1 apache apache 96 Sep 3 05:54 spacecraft.txt ############################################################ Positions of bright comets computed with util/comet_finder/main.py for JD(UT)2461286.82452703 -observatory V36 03:37:52.65 +19:08:45.1 17.4mag P/1996 R2 (Lagerkvist) 18:01:40.68 -34:16:58.8 14.3mag P/2010 H2 (Vales) 07:16:24.14 -70:05:10.7 17.3mag C/2014 UN271 (Bernardinelli-Bernstein) 06:15:11.36 +33:35:55.2 17.7mag C/2017 K2 (PANSTARRS) 04:45:11.48 +44:51:12.7 15.6mag P/2021 N1 (ZTF) 04:45:11.52 +44:51:12.7 15.6mag P/2021 N1 (ZTF) 22:16:41.93 +29:08:23.2 17.4mag C/2022 E2 (ATLAS) 07:07:05.19 +26:03:15.0 16.8mag C/2022 N2 (PANSTARRS) 10:45:49.68 +27:22:22.2 17.0mag C/2022 QE78 (ATLAS) 09:46:07.71 +05:15:13.6 18.0mag C/2022 R6 (PANSTARRS) 15:30:46.41 -15:17:58.4 14.8mag C/2023 R1 (PANSTARRS) 08:34:49.88 +32:39:19.2 15.7mag C/2024 E1 (Wierzchos) 15:06:09.87 +15:22:10.4 17.9mag C/2024 G6 (ATLAS) 18:36:19.69 +43:18:33.6 13.7mag C/2024 J3 (ATLAS) 20:31:43.34 +49:29:01.5 17.4mag C/2024 R4 (PANSTARRS) 05:33:23.81 -12:58:41.2 15.2mag C/2024 T5 (ATLAS) 07:10:09.27 +19:19:44.8 17.8mag C/2025 J1 (Borisov) 11:11:39.07 +19:04:31.9 16.9mag C/2025 V2 (Rankin) 13:16:24.84 +00:26:01.6 16.8mag C/2025 Y1 (ATLAS) 16:31:41.27 +74:39:31.8 16.2mag C/2026 A2 (Bok) 03:07:30.23 +46:14:18.7 17.4mag C/2026 B2 (Sun-Gao) 12:09:36.85 +10:57:20.9 17.5mag A/2026 E1 22:22:42.08 -34:39:57.9 13.3mag 10P/Tempel 11:45:31.52 -05:10:23.0 16.3mag 29P/Schwassmann-Wachmann 12:00:34.13 -03:49:55.8 17.6mag 63P/Wild 00:46:45.11 -06:48:59.0 15.4mag 65P/Gunn 06:31:31.40 +19:32:26.9 17.1mag 78P/Gehrels 03:16:45.27 +14:55:52.9 16.7mag 88P/Howell 05:25:10.51 +27:06:05.1 17.6mag 112P/Urata-Niijima 07:19:52.31 +25:47:39.6 17.9mag 114P/Wiseman-Skiff 10:18:58.73 +21:42:01.7 14.8mag 123P/West-Hartley 12:37:55.68 -19:56:29.8 17.4mag 124P/Mrkos 06:12:30.49 +20:45:20.0 15.9mag 128P/Shoemaker-Holt 23:54:21.77 +02:34:48.4 17.3mag 139P/Vaisala-Oterma 02:45:33.14 -17:59:28.8 15.4mag 161P/Hartley-IRAS 09:47:25.08 +16:35:34.5 12.0mag 169P/NEAT 03:20:45.77 +08:46:35.2 14.4mag 220P/McNaught 04:37:12.12 +35:02:36.4 15.2mag 260P/McNaught 08:21:05.40 +36:06:12.9 17.3mag 295P/LINEAR 15:22:44.58 +00:11:55.0 17.9mag 391P/Kowalski 09:24:19.96 +17:03:14.6 17.9mag 450P/LONEOS -rw-r--r-- 1 apache apache 2.0K Sep 3 05:54 comets.txt ############################################################ List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html : 19:45:06.20 +18:22:48.80 V488 2026-08-30.13 9.37 18:25:12.74 -22:25:28.60 V8055 2026-08-30.22 10.89 17:17:45.96 +64:31:40.10 ASASSN-26ez 2026-08-25.13 10.87 19:02:47.09 +58:08:21.00 AT2026zwo 2026-08-24.16 15.78 04:20:07.58 -42:26:59.90 AT2026zjy 2026-08-23.03 15.91 03:08:18.02 +11:54:46.50 SN2026ymb 2026-08-23.4 16.44 20:22:32.48 -50:45:14.30 SN2026yid 2026-08-22.82 15.13 04:24:28.39 -56:20:21.60 ASASSN-26ey 2026-08-20.02 15.55 16:46:37.81 -63:14:59.80 ASASSN-26ex 2026-08-18.78 3.63 21:28:47.85 +20:31:03.60 SN 2026sfn 2026-08-16.3 17.09 23:01:28.67 -61:00:39.00 SN 2026yib 2026-08-14.85 17.36 00:22:23.20 -32:16:02.70 SN 2026whu 2026-08-14.96 16.5 19:56:21.71 -37:24:19.90 ASASSN-26ew 2026-08-13.82 14.73 13:53:14.21 +00:26:52.00 SN 2026wkv 2026-08-10.12 15.83 05:21:07.61 +23:38:20.10 TCP J05210763+2338194 2026-08-10.59 9.34 01:28:20.49 +40:13:27.10 SN2026wpd 2026-08-9.34 16.37 23:47:50.89 +49:28:51.30 SN2026wjs 2026-08-9.24 17.09 16:03:20.92 +17:43:23.70 AT2026xau 2026-08-9.3 17.71 01:10:22.05 -09:34:08.50 SN2026weo 2026-08-7.46 15.76 00:56:54.35 -35:55:29.40 AT2026wdy 2026-08-5.05 16.08 22:08:07.63 -53:03:58.90 AT2026wek 2026-08-3.82 17.17 14:51:51.34 +66:13:24.60 ASASSN-26ev 2026-08-2.15 14.02 12:06:50.79 -36:16:06.20 SN2026wgm 2026-08-1.73 15.61 16:56:36.90 -59:29:26.00 ASASSN-26er 2026-07-25.82 15.09 01:21:27.83 -10:37:05.00 SN2026vbh 2026-07-25.61 15.97 21:17:31.59 +22:25:50.90 ASASSN-26eq 2026-07-24.37 15.13 18:53:36.89 +16:56:43.60 ASASSN-26ep 2026-07-23.47 -4.06 12:18:47.98 -30:48:47.50 ASASSN-26et 2026-07-22.76 13.98 13:00:47.82 +15:42:17.60 SN2026uwk 2026-07-21.75 16.38 18:52:31.11 -32:28:00.90 ASASSN-26en 2026-07-21.77 14.63 14:42:58.01 -62:32:59.10 ASASSN-26es 2026-07-20.79 15.36 20:12:45.57 -32:53:13.00 ASASSN-26em 2026-07-20.94 16.83 18:54:24.33 -46:11:51.70 ASASSN-26eu 2026-07-20.93 14.86 03:18:56.99 -80:55:10.40 AT2026ugi 2026-07-20.03 17.12 18:43:58.40 +24:22:41.80 ASASSN-26eo 2026-07-19.36 16.16 04:50:01.03 -02:22:33.80 ASASSN-26ej 2026-07-16.17 17.02 18:34:55.28 -31:41:00.90 ASASSN-26ek 2026-07-16.24 15.73 17:07:43.61 -44:21:53.50 ASASSN-26el 2026-07-15.86 16.01 14:45:08.35 +24:13:12.30 ASASSN-26ei 2026-07-16.17 16.46 10:00:46.44 -32:36:31.10 AT 2023mhb 2026-07-14.73 16.67 14:39:37.45 -11:22:36.20 AT 2026unl 2026-07-15.27 17.11 10:49:42.57 -11:25:55.80 ASASSN-26eh 2026-07-14.72 16.58 19:33:53.06 -07:15:00.80 ASASSN-22le 2026-07-14.15 15.5 02:45:40.52 -27:55:30.30 ASASSN-26ef 2026-07-12.35 15.86 23:26:43.80 +04:42:39.70 SN 2026qtn 2026-07-12.22 16.47 02:19:17.26 +28:57:15.40 ASASSN-26ec 2026-07-11.53 2.78 18:31:15.56 -05:34:31.50 AT2026stb 2026-07-11.28 -1.29 13:36:08.24 +23:29:05.00 AT2026pjf 2026-07-10.18 -0.72 17:33:39.82 +04:22:36.70 SN2026pir 2026-07-9.86 -0.66 11:21:41.26 -50:33:36.30 ASASSN-26ed 2026-07-8.8 -1.3 23:41:42.11 +26:29:49.10 AT2026qil 2026-07-9.3 16.15 20:21:30.50 -32:03:40.10 ASASSN-26ee 2026-07-7.22 15.53 19:37:44.09 -05:35:42.80 AT2026ryu 2026-07-7.17 14.88 11:06:55.46 -04:07:04.50 AT2026qqg 2026-07-5.01 16.82 19:07:23.69 -74:13:37.30 AT2026qly 2026-07-5.02 17.31 17:57:43.80 +27:18:40.10 ASASSN-26ea 2026-07-5.07 16.67 19:59:01.43 -32:07:34.30 ASASSN-26eb 2026-07-4.97 15.52 18:46:50.35 -57:44:13.20 SN 2026qqp 2026-07-5.03 -0.92 19:17:31.69 -39:55:29.90 ASASSN-26dz 2026-07-5.14 15.91 19:14:31.37 +12:03:52.90 AT 2026rdg 2026-07-3.43 11.81 04:05:50.09 -70:24:34.40 AT 2026qpr 2026-06-30.4 15.96 13:45:37.49 -05:59:35.80 SN 2026pub 2026-06-30.09 16.01 16:41:15.63 +39:17:14.70 SN 2026pel 2026-06-26.38 16.07 10:14:40.19 -35:38:21.30 ASASSN-26dy 2026-06-25.99 15.63 14:47:21.56 -40:15:51.30 ASASSN-26dv 2026-06-23.03 14.62 13:38:49.79 -77:21:06.70 ASASSN-26dw 2026-06-23.04 16.09 00:59:27.90 +33:08:13.20 SN 2026mke 2026-06-22.39 17.13 11:10:44.73 -30:20:45.50 SN 2026nmv 2026-06-22.06 16.56 21:36:15.68 -21:19:12.50 AT2026oxh 2026-06-22.15 17.14 17:31:38.38 -56:05:51.90 ASASSN-26dx 2026-06-22.02 14.72 14:10:13.44 -38:46:46.10 AT2026pvk 2026-06-22.06 16.53 20:56:47.23 -18:31:05.20 AT2026plb 2026-06-21.31 16.4 15:44:29.68 +21:00:59.30 SN2026ore 2026-06-21.29 17.57 23:50:05.98 -14:01:41.30 AT2026oxl 2026-06-21.52 17.64 17:36:54.73 -18:10:04.20 AT2026ouj 2026-06-20.92 15.15 00:34:04.08 -30:22:09.20 AT2026ntk 2026-06-18.09 17.34 20:49:13.39 +25:17:59.20 ASASSN-26du 2026-06-15.39 15.93 23:09:30.84 +32:40:42.00 SN2026oxc 2026-06-14.35 16.83 02:02:26.78 +32:04:21.30 AT2026ovz 2026-06-14.59 15.39 21:26:28.11 -72:31:19.50 AT2026nwc 2026-06-11 17.05 17:54:57.33 +26:32:34.20 SN 2026odc 2026-06-11.23 17.62 13:55:59.94 +17:30:37.20 SN 2026nyq 2026-06-11.1 16.24 00:50:45.14 -71:38:36.90 ASASSN-26dt 2026-06-11.13 10.22 14:42:19.73 +19:11:35.60 SN2026nyp 2026-06-10.3 16.32 12:23:23.92 +12:56:43.50 SN2026mta 2026-06-8.29 16.69 12:30:18.51 +47:12:33.20 SN2026oao 2026-06-9.32 17.02 10:51:05.21 -42:28:56.60 AT2026nvf 2026-06-8.12 16.75 13:50:22.48 -07:35:00.00 SN2026npn 2026-06-8.02 17.58 00:56:07.17 +43:01:43.20 ASASSN-26dq 2026-06-7.43 13.58 01:07:49.46 +41:59:43.70 SN 2026obc 2026-06-7.43 15.15 21:11:25.22 +14:14:31.90 ASASSN-26dr 2026-06-7.24 16.24 06:21:27.06 -65:16:42.00 ASASSN-26ds 2026-06-2.97 15.02 20:07:38.15 -21:07:05.40 SN2026mho 2026-05-25.18 -1.12 11:29:42.55 +79:01:03.10 AT2026min 2026-05-24.21 16.63 11:44:33.11 -68:48:32.90 ASASSN-26no 2026-05-24.03 8.35 19:00:42.82 -48:31:01.60 ASASSN-26dp 2026-05-22.31 -3.28 14:23:56.59 -58:37:47.40 ASASSN-26dn 2026-05-20.01 14.59 11:24:54.06 +47:57:01.60 AT2026nma 2026-05-20.29 15.46 21:27:08.58 +33:24:38.10 AT2026lli 2026-05-19.34 15.86 00:31:01.41 -13:38:51.70 AT2026nad 2026-05-19.39 15.34 -rw-r--r-- 1 apache apache 5.7K Sep 3 05:54 asassn_transients_list.txt ############################################################ Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html : 02:19:17.36 +28:57:15.8 TCP J02191736+2857158 2026-07-12.3549 12.5mag 00:44:56.43 +41:57:41.6 PNV J00445643+4157416 2026-07-13.8026 17.98Cmag 00:42:55.36 +41:17:27.0 PNV J00425536+4117270 2026-07-20.1813 17.7mag 20:35:43.64 +61:31:32.9 TCP J20354364+6131329 2026-07-20.5443 14.4mag 21:17:31.48 +22:25:51.0 TCP J21173148+2225510 2026-07-23.5577 14.8mag 00:41:24.04 +40:49:02.8 PNV J00412404+4049028 2026-07-25.0157 18.7mag 00:43:04.26 +41:02:28.6 PNV J00430426+4102286 2026-07-26.1512 20mag 14:51:51.40 +66:13:24.0 TCP J14515140+6613240 2026-07-29.2561 13.5mag 00:43:06.15 +41:22:08.2 PNV J00430615+4122082 2026-07-30.0085 19.4mag 00:41:33.23 +41:10:12.2 PNV J00413323+4110122 2026-08-02.8913 17.1mag 05:21:07.63 +23:38:19.4 TCP J05210763+2338194 2026-08-06.4109 11.2mag 22:57:17.96 +47:07:41.8 TCP J22571796+4707418 2026-08-09.3289 14.3mag 09:13:38.17 +76:28:18.1 PSN J09133817+7628181 2026-08-09.8037 15.4mag 00:43:17.29 +41:26:48.6 PNV J00431729+4126486 2026-08-14.0920 16.8mag 00:42:52.82 +41:10:58.6 PNV J00425282+4110586 2026-08-17.7723 19.9mag 00:42:52.83 +41:10:59.6 PNV J00425283+4110596 2026-08-18.6119 19.3mag 18:25:12.76 -22:25:29.3 TCP J18251276-2225293 2026-08-19.1062 9.4mag 18:03:09.04 +12:18:14.0 TCP J18030904+1218140 2026-08-19.5199 14.9mag 19:45:06.48 +18:22:42.2 PNV J19450648+1822422 2026-08-25.1278 9.0mag 00:42:54.65 +41:22:59.3 PNV J00425465+4122593 2026-08-25.4712 18.9mag -rw-r--r-- 1 apache apache 190K Sep 3 05:54 tocp_transients_list.txt ############################################################ Truncated list of recent TNS transients from https://www.wis-tns.org/ : 01:05:43.010 +44:35:34.60 AT 2026yer 2026-08-07.76 18.6 22:55:30.319 -22:02:48.22 AT 2026yeq 2026-08-06.66 20.14 02:37:46.699 -15:04:35.89 AT 2026yep 2026-08-06.73 20.06 22:30:16.021 -21:36:30.09 AT 2026yeo 2026-08-06.63 19.92 01:03:15.542 -48:59:20.71 AT 2026yen 2026-07-20.74 20.16 21:40:49.509 +03:49:04.95 AT 2026yem 2026-08-07.47 20.52 02:44:18.253 -15:40:32.00 AT 2026yel 2026-08-07.72 19.68 02:40:05.175 -07:47:40.58 AT 2026yek 2026-08-07.74 19.67 02:41:31.713 -05:42:07.66 AT 2026yej 2026-08-07.74 19.99 02:37:50.952 -34:56:23.02 AT 2026yei 2026-08-07.75 20.24 00:49:13.568 +35:33:39.77 AT 2026yeh 2026-08-07.46 18.6935 00:51:29.158 +58:43:46.50 AT 2026yeg 2026-06-27.59 18.302 23:39:55.450 +21:19:37.52 SN 2026yef 2026-08-07.52 18.408 02:33:45.113 +13:18:25.70 SN 2026yee 2026-08-07.60 19.123 23:58:58.059 +31:26:23.87 AT 2026yed 2026-08-07.54 19.075 00:30:10.856 +35:23:23.27 SN 2026yec 2026-08-07.55 18.551 21:31:13.865 -31:52:55.42 AT 2026yeb 2026-08-06.61 20.01 22:05:14.663 -13:18:47.83 AT 2026yea 2026-08-04.51 20.14 20:28:43.809 -29:28:49.69 AT 2026ydz 2026-08-03.55 19.71 22:22:26.994 -02:53:12.42 SN 2026ydy 2026-08-06.36 20.1587 -rw-r--r-- 1 apache apache 88K Sep 3 05:54 tns_transients_list.txt Discovery image 3 2026 09 03.32498 2461286.82498 9.98 05:46:56.39 +17:54:32.3 6841 0703 /data_ssd/NMW-TexasTech/workdir//img_2026-09-03_CI_Tau-04-Q2b1x1_055149_TTUQ2b1x1_1642143_XpB6FDqs/fd_Tau-04-Q2b1x1_2026-09-03_02-47-48_20.00sec_-0.00C_LIGHT_0337.fits
