FITS images used in this processing run:

Field UMi-02-Q2b1x1 reference image: UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
Field UMi-02-Q2b1x1 reference image: UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
Field UMi-02-Q2b1x1 second-epoch image: UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
Field UMi-02-Q2b1x1 second-epoch image: UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits

## VaST run with SExtractor config file default.sex.telephoto_lens_onlybrightstars_v1 ##
Images processed 4
Images used for photometry 4
Ref.  image: 2461149.86733143 19.04.2026 08:48:47.436   /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
First image: 2461149.86733143 19.04.2026 08:48:47.436   /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
Last  image: 2461335.68995260 22.10.2026 04:33:21.905   /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.29
Magnitude-Size filter: Disabled
For each source choose aperture with the smallest scatter: YES
Photometric errors rescaling: NO
Number of identified bad images: 0
Number of SysRem iterations: 0
User-specified moving object: none
Computation time: 3 seconds
Number of parallel threads: 3
SExtractor parameter file: default.sex
Some important SExtractor parameters:
DETECT_MINAREA  10.0             # minimum number of pixels above threshold
DETECT_THRESH   10.0             #  or , in mag.arcsec-2
ANALYSIS_THRESH 10.0             #  or , in mag.arcsec-2
SATUR_LEVEL     55000.0         # level (in ADUs) at which arises saturation
GAIN            0.37            # detector gain in e-/ADU
VAST_SKIP_INDEX_VS_MAG is set - skipping the lib/index_vs_mag variability-index fitting
Total objects detected (at least 2 times):  5843
Objects passed selection criteria:  5804
Measurements per detected object (mean, median, min, max):    2.3    2.0    2    4
Measurements per selected object (mean, median, min, max):    2.3    2.0    2    4
Average stars detected per image: 3459
Average stars matched: 3375.5 (97.586 %)
Memory usage VmPeak:   232840 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Thu Oct 15 15:05:03 CDT 2026
VaST build number  1.0rc89-241-g3eca6a38
OpenMP enabled: Yes
SExtractor version 2.25.2 (2026-10-15)
GNU bash, version 5.3.20(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Wed Oct 21 23:36:43 CDT 2026
Host name: tau
############################################################
ERROR: large change in astrometric-star counts between the two new images (q2: 26 -> 34, 23.529% > 20%; fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits vs fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits) - usually a bad plate solution on one of them, sometimes stars crossing a quadrant boundary when the two images are widely offset, rarely a transparency change; continuing processing
***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################

######## Processing parameters ########
AAVSO_COMMENT_STRING= NMW-TexasTech Camera-2 135mm f/2.2 telephoto lens + QHY600M CMOS
ASTCHECK_ASTEROID_SEARCH_RADIUS_ARCSEC= 
BAD_REGION_FILE= /var/www/nmw_calibration/TTUQ2b1x1/TTUQ2_bad_region.lst
CAMERA_SETTINGS= TTUQ2b1x1
CHECK_POINTING_ACCURACY= yes
DARK_FRAMES_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ2b1x1/darks
EXCLUSION_LIST= ../exclusion_list_TTUQ2.txt
FILTER_BAD_IMG__MAX_APERTURE_STAR_SIZE_PIX= 12.5
FILTER_BAD_IMG__MAX_ELONGATION_AminusB_PIX= 0.55
FILTER_BAD_IMG__MIN_APERTURE_STAR_SIZE_PIX= 2.0
FILTER_BRIGHT_MAG_CUTOFF_TRANSIENT_SEARCH= -5
FILTER_FAINT_MAG_CUTOFF_TRANSIENT_SEARCH= 15.5
FLAT_FIELD_DIR_OR_FILE= /var/www/nmw_calibration/TTUQ2b1x1/flats
FRAME_EDGE_OFFSET_PIX= 600
GAIA_BAND_FOR_CATALOGED_SOURCE_CHECK= 
MAX_NEW_TO_REF_MEAN_IMG_VALUE_RATIO= 100
DISABLE_NEW_TO_REF_MEAN_IMG_RATIO_CHECK= yes
MAX_NEW_IMG_MEAN_VALUE= 25000
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS= 0.18
MAX_SD_RATIO_OF_SECOND_EPOCH_IMGS_SOFT_LIMIT= 0.12
MPC_CODE= V36
NMW_CALIBRATION= /var/www/nmw_calibration
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_HARD_LIMIT= 10000
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_SOFT_LIMIT= 8000
OMP_NUM_THREADS= 3
ONLINE_MPCHECKER_BUTTON_ASTEROID_SEARCH_RADIUS_ARCMIN= 
PHOTOMETRIC_CALIBRATION= 
REQUIRE_PIX_SHIFT_BETWEEN_IMAGES_FOR_TRANSIENT_CANDIDATES= yes
SEXTRACTOR_CONFIG_BRIGHTSTARPASS= default.sex.telephoto_lens_onlybrightstars_v1
SEXTRACTOR_CONFIG_FILES= default.sex.telephoto_lens_onlybrightstars_v1 default.sex.telephoto_lens_vSTL
SEXTRACTOR_CONFIG_FILES_HIGH_PRIORITY_EXTRA= default.sex.telephoto_lens_vTTU
HIGH_PRIORITY_FIELDS= Sco6 Oph-08-Q1b1x1 Oph-08-Q2b1x1 Sco-04-Q1b1x1 Sco-04-Q2b1x1 Sgr-04-Q1b1x1 Sgr-04-Q2b1x1 242
STARMATCH_RADIUS_PIX= 5
SYSREM_ITERATIONS= 0
TELESCOP= 
TELESCOP_NAME_KNOWN_TO_VaST_FOR_FOV_DETERMINATION= 
UCAC5_PLATESOLVE_ITERATIONS= 2
FPACK_FULLY_CALIBRATED_IMAGE= no
#######################################
HOSTNAME= tau
USER= 
HOME= 
#######################################
SExtractor catalog cache: enabled, directory /data_ssd/NMW-TexasTech/vast_sextractor_cache
Reference image directory is set to /data_ssd/NMW-TexasTech/reference_imgs
VIZIER_SITE=vizier.cds.unistra.fr
GAIA_DR2_CLIENT=vizquery (lib/vizquery -> VizieR vizier.cds.unistra.fr)
INFO: MAKE_PNG_PLOTS is set to yes
FITS_FILE_EXT=fits
CALIBRATION_STATUS_PREFIX=
Fields in the data directory: 
UMi-02-Q2b1x1
#######################################
########### Starting UMi-02-Q2b1x1 ###########
Processing UMi-02-Q2b1x1
server tau has sufficient free disk space available: 534290 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 534290 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.png' -> 'transient_report/UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits_preview.png'

UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits


renamed 'UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.png' -> 'transient_report/UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits_preview.png'

UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.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= 522.6192
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 519.1383
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 4811.1163
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 1558.6176
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 4683.4705
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 1532.8489
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 9.20578
INFO:                  SECOND_EPOCH__SD_ratio= 0.017
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 =     15.7399997711182 / [degC] Focuser temperature
AMBTEMP =                 16.7 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-10-21T23:32:41.1651435' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-10-22T04:32:41.1651435' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61335.1893653357 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-10-22T04:32:51.0668189' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61335.1894799303 / 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      =     215.998695837793 / [deg] RA of telescope" status=0
Record 32: "DEC     =     69.9999644286731 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     17.4488888888889 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     346.836111111111 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.30166511915433 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / 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  = 'UMi-02'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '14 24 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+70 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "FOCNAME = 'ZWO Focuser'        / Focusing equipment name" status=0
Record 50: "FOCPOS  =                20721 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20721 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     15.7399997711182 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     15.7399997711182 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 12.9 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 78.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               907.11 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 16.7 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 21.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             1.800144 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             0.400032 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/d_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits :)

Spent 0.628907 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/d_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 37096.658242
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits :)


No overscan detected - all values seem high! (left_median=24199.0, right_median=29433.0)
renamed 'mff_TTUQ2b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     15.7600002288818 / [degC] Focuser temperature
AMBTEMP =                 16.7 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-10-21T23:33:21.9051962' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-10-22T04:33:21.9051962' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61335.1898368634 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-10-22T04:33:31.8101489' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61335.1899515046 / 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      =     215.998695854896 / [deg] RA of telescope" status=0
Record 32: "DEC     =     69.9999644753932 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     17.4172222222222 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     346.886388888889 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.30735038172069 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'East'               / 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  = 'UMi-02'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '14 24 00'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+70 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "FOCNAME = 'ZWO Focuser'        / Focusing equipment name" status=0
Record 50: "FOCPOS  =                20721 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20721 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     15.7600002288818 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     15.7600002288818 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 12.9 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 78.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               907.11 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 16.7 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 21.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             1.800144 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             0.400032 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/d_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits :)

Spent 0.504953 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/d_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 37096.658242
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits :)


No overscan detected - all values seem high! (left_median=24199.0, right_median=29433.0)
renamed 'mff_TTUQ2b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
Dark frame used to calibrate the second-epoch images:



Flat field used to calibrate the second-epoch images:



after the calibration attempt:
SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
Previews of the CALIBRATED second-epoch images:


fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits



fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.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/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
  
SExtractor catalog cache: saved UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits.cat to cache
SExtractor catalog cache: saved UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.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/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
Checking WCS cache directory local_wcs_cache
Checking 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: 2461335.68948108
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_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits exists and is non-empty
wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits exists and is non-empty
wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits exists and is non-empty
wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits exists and is non-empty
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits (1st reference image)
verification OK: wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
Image size: 937.5'x624.3'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.86"/pix along the Y axis
Image center: 14:24:01.593 +69:59:33.71 J2000 4789.000 3195.000 
###################################
The image scale is 5.87"/pix, setting the soft and hard astrometric limits for filtering second-epoch detections: 5.9" and 8.8"
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits (1st new image)
verification OK: wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
Image size: 937.8'x624.8'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.88"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 14:23:51.835 +69:58:11.87 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the first second-epoch image (pointing accuracy)
Reference image center 14:24:01.593 +69:59:33.71
Second-epoch image center 14:23:51.835 +69:58:11.87
Angular distance between the image centers 0.0267 deg.
Soft limit: 0.50 deg.  Hard limit: 1.00 deg.
###################################
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits (2nd new image)
verification OK: wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
Image size: 937.8'x624.8'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.88"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 14:23:50.146 +69:57:37.61 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the second second-epoch image (pointing accuracy)
Reference image center 14:24:01.593 +69:59:33.71
Second-epoch image center 14:23:50.146 +69:57:37.61
Angular distance between the image centers 0.0361 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  14:23:51.835 +69:58:11.87
Second-epoch second image center 14:23:50.146 +69:57:37.61
Angular distance between the image centers 0.00982 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/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits &> /tmp/tmp.NNI6EtqhtZ
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits &> /tmp/tmp.G6z9CXj5XS
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits &> /tmp/tmp.lhoWLz7hX4
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits &> /tmp/tmp.0AUp7JZZL7
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
Calibrating the magnitude scale
Found non-empty wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.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_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits and wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.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_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits and wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits.wcscat 
Found non-empty wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits and wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits.wcscat
The reference image (wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits) and catalog (wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits.wcscat) found
'wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits.wcscat' -> 'wcsmag.cat'
Read 7945 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 187.9719 to 243.8628 deg, Dec +63.6716 to +75.2389 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 187.9719 to 243.8628 deg, Dec 63.6716 to 75.2389 deg
Loaded 8088 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): 4821 out of 4988 total matches.
Matched with Tycho-2 4988 out of 7945 detected stars.
The calibration function type and coefficients are written to calib.txt_param
util/calibrate_magnitude_scale 0.000000 1.000000 22.724700
a=0.000000 b=1.000000 c=22.724700
From vast_summary.log: estimated ref. image limiting mag.:  -7.29
Updating vast_summary.log: Estimated ref. image limiting mag.:  15.43

Updated vast_limiting_magnitude.log with calibrated magnitudes
Working...
Please, PLEASE, be patient!!!
All lightcurves processed!  =)
Estimated ref. image limiting mag.:  15.43

Lightcurve magnitude calibration plot:


Preparing per-reference-image forced-photometry calibration (method=tycho2 band=V)
Read 7945 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 187.9719 to 243.8628 deg, Dec +63.6716 to +75.2389 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 187.9719 to 243.8628 deg, Dec 63.6716 to 75.2389 deg
Loaded 8088 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): 4821 out of 4988 total matches.
Matched with Tycho-2 4988 out of 7945 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00001.cat.aperture for wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
Forced-photometry filter: calibrated wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits -> calib.txt_param_ref_wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits (aperture=6.3)
Read 7905 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 187.9736 to 243.8628 deg, Dec +63.6717 to +75.2223 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 187.9736 to 243.8628 deg, Dec 63.6717 to 75.2223 deg
Loaded 8080 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): 4832 out of 4997 total matches.
Matched with Tycho-2 4997 out of 7905 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00002.cat.aperture for wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
Forced-photometry filter: calibrated wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits -> calib.txt_param_ref_wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits (aperture=6.3)
____ End of magnitude calibration ____
Applying consolidated magnitude filters...
Preparing the exclusion lists for this field
Done with filtering
Found 0 candidate transients before the final filtering.  (Hard limit: 10000)
Median FWHM seeing for isolated stars:
 2.4 pix  UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
 2.4 pix  UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
 2.3 pix  fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
 2.4 pix  fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
Limiting magnitude estimates:
 15.4 mag.  UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
 15.4 mag.  UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
 13.4 mag.  fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
 13.7 mag.  fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
All-image limiting magnitude estimate:  13.4 (SNR )  10.4 (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.NNI6EtqhtZ (6) ############
Parsing command line arguments...
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_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits 570.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits' -> 'wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.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/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
WCS_IMAGE_NAME=wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
WCS-calibrated image found: wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
Checking if the catalog wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits.wcscat corresponding to the image wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits alredy exist and is non-empty...
Catalog wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits.wcscat corresponding to the image wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
WCS catalog name: wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.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=497, bad_region=1747, passed=7945
Got 7945 stars (including 5791 good ones) from the SExtractor catalog wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits.wcscat 
util/solve_plate_with_UCAC5 got 7945 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.5'
Seting catalog search parameters based on the expected field of view 937.5 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013021 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010417 (37.5 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 768 to 828 (Dec 63.7 to 75.2)
Done reading UCAC5 zone files...
Matched 4901 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4893 matched stars entering correct_measured_positions(), 4893 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.32" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4893 matched stars entering correct_measured_positions(), 6565 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.32" 

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 768 to 828 (Dec 63.7 to 75.2)
Done reading UCAC5 zone files...
Matched 4901 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4893 matched stars entering correct_measured_positions(), 6565 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Accuracy estimation diagnostic: 4893 matched stars entering correct_measured_positions(), 6565 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Excluding outliers - 4893 stars left (next iteration limit 5382)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: util/identify.sh trusts the WCS of wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits N_match=4893 sigma_overall_arcsec=0.363 sigma_q1_arcsec=0.332 sigma_q2_arcsec=0.358 sigma_q3_arcsec=0.394 sigma_q4_arcsec=0.383 n_q1=1741 n_q2=835 n_q3=1536 n_q4=781 worst_quadrant_to_overall_ratio=1.088
WCS_HEADER_DIAG: file=UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits selection=current_pairs N_selected=4893 N_valid=4893 bias_ra_arcsec=-0.023 bias_dec_arcsec=-0.011 median_sep_arcsec=0.307 p95_sep_arcsec=0.906 n_q1=1741 n_q2=835 n_q3=1536 n_q4=781 occupied_cells_4x4=16/16
The image catalog is written to wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits -region wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.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.G6z9CXj5XS (6) ############
Parsing command line arguments...
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_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits 570.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits' -> 'wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.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/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
WCS_IMAGE_NAME=wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
WCS-calibrated image found: wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
Checking if the catalog wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits.wcscat corresponding to the image wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits alredy exist and is non-empty...
Catalog wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits.wcscat corresponding to the image wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
WCS catalog name: wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.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=492, bad_region=1720, passed=7905
Got 7905 stars (including 5780 good ones) from the SExtractor catalog wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits.wcscat 
util/solve_plate_with_UCAC5 got 7905 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.4'
Seting catalog search parameters based on the expected field of view 937.4 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013019 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010416 (37.5 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 768 to 828 (Dec 63.7 to 75.2)
Done reading UCAC5 zone files...
Matched 4897 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4888 matched stars entering correct_measured_positions(), 4888 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.32" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4888 matched stars entering correct_measured_positions(), 6551 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 768 to 828 (Dec 63.7 to 75.2)
Done reading UCAC5 zone files...
Matched 4897 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4888 matched stars entering correct_measured_positions(), 6551 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Accuracy estimation diagnostic: 4888 matched stars entering correct_measured_positions(), 6551 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.35" 
Excluding outliers - 4888 stars left (next iteration limit 5376)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: util/identify.sh trusts the WCS of wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits N_match=4888 sigma_overall_arcsec=0.362 sigma_q1_arcsec=0.318 sigma_q2_arcsec=0.377 sigma_q3_arcsec=0.401 sigma_q4_arcsec=0.390 n_q1=1726 n_q2=841 n_q3=1532 n_q4=789 worst_quadrant_to_overall_ratio=1.107
WCS_HEADER_DIAG: file=UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits selection=current_pairs N_selected=4888 N_valid=4888 bias_ra_arcsec=-0.021 bias_dec_arcsec=-0.014 median_sep_arcsec=0.299 p95_sep_arcsec=0.926 n_q1=1726 n_q2=841 n_q3=1532 n_q4=789 occupied_cells_4x4=16/16
The image catalog is written to wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits -region wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.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.lhoWLz7hX4 (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_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
WCS_IMAGE_NAME=wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
WCS-calibrated image found: wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
Checking if the catalog wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat corresponding to the image wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits alredy exist and is non-empty...
Catalog wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat corresponding to the image wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
WCS catalog name: wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.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=86, bad_region=93, passed=821
Got 821 stars (including 645 good ones) from the SExtractor catalog wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat 
util/solve_plate_with_UCAC5 got 821 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.8'
Seting catalog search parameters based on the expected field of view 937.8 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013025 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010420 (37.5 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 769 to 828 (Dec 63.9 to 75.2)
Done reading UCAC5 zone files...
Matched 632 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 629 matched stars entering correct_measured_positions(), 588 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.41" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 629 matched stars entering correct_measured_positions(), 688 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.41" 

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 769 to 828 (Dec 63.9 to 75.2)
Done reading UCAC5 zone files...
Matched 632 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 630 matched stars entering correct_measured_positions(), 685 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.45" 
Accuracy estimation diagnostic: 630 matched stars entering correct_measured_positions(), 685 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.46" 
Excluding outliers - 630 stars left (next iteration limit 691)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: the 630 catalog matches do not cover the frame (223/26/324/57 per quadrant, need 39 in each) - keeping the original solution
WCS_QUALITY_DIAG: file=fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits N_match=630 sigma_overall_arcsec=0.518 sigma_q1_arcsec=0.470 sigma_q2_arcsec=0.517 sigma_q3_arcsec=0.505 sigma_q4_arcsec=0.684 n_q1=223 n_q2=26 n_q3=324 n_q4=57 worst_quadrant_to_overall_ratio=1.321
WCS_HEADER_DIAG: file=fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits selection=current_pairs N_selected=630 N_valid=630 bias_ra_arcsec=0.424 bias_dec_arcsec=-0.126 median_sep_arcsec=0.698 p95_sep_arcsec=1.458 n_q1=223 n_q2=26 n_q3=324 n_q4=57 occupied_cells_4x4=16/16
The image catalog is written to wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits -region wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.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.0AUp7JZZL7 (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_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
WCS_IMAGE_NAME=wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
WCS-calibrated image found: wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
Checking if the catalog wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits.wcscat corresponding to the image wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits alredy exist and is non-empty...
Catalog wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits.wcscat corresponding to the image wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
WCS catalog name: wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.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=102, bad_region=109, passed=925
Got 925 stars (including 721 good ones) from the SExtractor catalog wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits.wcscat 
util/solve_plate_with_UCAC5 got 925 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.8'
Seting catalog search parameters based on the expected field of view 937.8 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013025 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010420 (37.5 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 769 to 827 (Dec 63.9 to 75.1)
Done reading UCAC5 zone files...
Matched 703 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 699 matched stars entering correct_measured_positions(), 656 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.39" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 699 matched stars entering correct_measured_positions(), 775 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.40" 

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 769 to 827 (Dec 63.9 to 75.1)
Done reading UCAC5 zone files...
Matched 703 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 698 matched stars entering correct_measured_positions(), 777 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.41" 
Accuracy estimation diagnostic: 698 matched stars entering correct_measured_positions(), 777 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.40" 
Excluding outliers - 698 stars left (next iteration limit 768)
Stop iterations.


 The field is successfully solved and matched with the astrometric catalog! :)

SIP_REFIT: the 698 catalog matches do not cover the frame (266/34/347/51 per quadrant, need 43 in each) - keeping the original solution
WCS_QUALITY_DIAG: file=fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits N_match=698 sigma_overall_arcsec=0.479 sigma_q1_arcsec=0.459 sigma_q2_arcsec=0.524 sigma_q3_arcsec=0.455 sigma_q4_arcsec=0.485 n_q1=266 n_q2=34 n_q3=347 n_q4=51 worst_quadrant_to_overall_ratio=1.093
WCS_HEADER_DIAG: file=fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits selection=current_pairs N_selected=698 N_valid=698 bias_ra_arcsec=0.368 bias_dec_arcsec=-0.192 median_sep_arcsec=0.685 p95_sep_arcsec=1.480 n_q1=266 n_q2=34 n_q3=347 n_q4=51 occupied_cells_4x4=16/16
The image catalog is written to wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits -region wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.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_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits to local_wcs_cache/
'wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits' -> 'local_wcs_cache/wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits'
Saving the final (post-refit) wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits to local_wcs_cache/
'wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits' -> 'local_wcs_cache/wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits'
Saving the final (post-refit) wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits to local_wcs_cache/
'wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits' -> 'local_wcs_cache/wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits'
Saving the final (post-refit) wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits to local_wcs_cache/
'wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits' -> 'local_wcs_cache/wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits'
###################################
# Pre-local-correction WCS quality summary (see WCS_QUALITY_DIAG lines above)
ref1=UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits sigma_overall=0.363 worst_q_ratio=1.088
ref2=UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits sigma_overall=0.362 worst_q_ratio=1.107
new1=fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits sigma_overall=0.518 worst_q_ratio=1.321
new2=fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits sigma_overall=0.479 worst_q_ratio=1.093
reference average sigma_overall=0.3625 worst_q_ratio=1.0975
warn-on-ratio threshold: 2.0x reference
###################################
ERROR: large change in astrometric-star counts between the two new images (q2: 26 -> 34, 23.529% > 20%; fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits vs fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits) - usually a bad plate solution on one of them, sometimes stars crossing a quadrant boundary when the two images are widely offset, rarely a transparency change; continuing processing

Astrometric residual vector field (catalog-matched stars):

plot_astrometric_residuals_xy.py: wrote wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659_astrometric_residuals.png (4893 matched stars from wcs_UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.32 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660_astrometric_residuals.png (4888 matched stars from wcs_UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.33 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185_astrometric_residuals.png (630 matched stars from wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.45 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186_astrometric_residuals.png (698 matched stars from wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.40 arcsec)


Copying WCS-calibrated images back to input directory
Saving fully-calibrated image wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits'
Saving fully-calibrated image wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits'
Preparing the HTML report for the field UMi-02-Q2b1x1 with default.sex.telephoto_lens_onlybrightstars_v1
No candidates found here
Prepared the HTML report for the field UMi-02-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/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
  
Last  image: 2461335.68948108 22.10.2026 04:32:41.165 UTC
WARNING: VaST exited with code 1 on the field UMi-02-Q2b1x1 as too few input images were matched to the reference image - wrong pointing? clouds? very bad focus?
Blind plate solve of the unmatched second-epoch image fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits to check the telescope pointing
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
WCS_IMAGE_NAME=wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
Field of view for the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits was not set. Trying to guess...
The guess is  605 arcmin.
No image with WCS calibration found for /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits .... Determining astrometry method...
Using the local copy of Astrometry.net software...
Choosing aperture...
Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
/data_ssd/NMW-TexasTech/workdir/vast_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/lib/make_outxyls_for_astrometric_calibration found 1142 high-SNR stars for plate solving
 
This service uses tools provided by Astrometry.net.
For more information visit http://astrometry.net/ 

######### Trying to solve plate assuming 605' field of view #########
 /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
Using the local copy of Astrometry.net code
IMAGE_SIZE= --width 9576 --height 6388    SCALE_LOW=544.5 SCALE_HIGH=3025.0
Using solve-field binary
/usr/local/astrometry/bin/solve-field
Reading input file 1 of 1: "out2789043.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out2789043.axy"...
Field 1 did not solve (index index-4119.fits, field objects 1-10).
Field 1 did not solve (index index-4118.fits, field objects 1-10).
Field 1 did not solve (index index-4117.fits, field objects 1-10).
Field 1 did not solve (index index-4116.fits, field objects 1-10).
Field 1 did not solve (index index-4115.fits, field objects 1-10).
  log-odds ratio 489.644 (4.46545e+212), 69 match, 0 conflict, 316 distractors, 93 index.
  RA,Dec = (216.036,69.9866), pixel scale 5.95891 arcsec/pix.
  Hit/miss:   Hit/miss: ++-+++++++++-+-+++++++++----+-+++++++-+++-+-+---+++---+-+-+-+-+-+---+-+---++-+--++----+---+---------
Field 1: solved with index index-4114.fits.
Field 1 solved: writing to file ./out2789043.solved to indicate this.
Field: out2789043.xyls
Field center: (RA,Dec) = (215.972160, 69.969704) deg.
Field center: (RA H:M:S, Dec D:M:S) = (14:23:53.318, +69:58:10.933).
Field size: 15.744 x 10.5474 degrees
Field rotation angle: up is 177.782 degrees E of N
Field parity: neg

WCS keywords and Astrometry.net provenance markers have been successfully stripped from all HDUs in the file.
Opening FITS image file input.fits for reading...  done!
Creating new image file (wcs_input.fits)...  done!
done!
All done!
Keyword does not exist
Keyword has been changed to:
VAST001 = 'wcs_image_calibration.sh' / VaST script name
Keyword does not exist
Keyword has been changed to:
VAST002 = 'local   '           / ASTROMETRYNET_LOCAL_OR_REMOTE
Keyword does not exist
Keyword has been changed to:
VAST003 = 'local   '           / PLATE_SOLVE_SERVER
Keyword does not exist
Keyword has been changed to:
VAST004 = 'iteration01'        / astrometry.net run
Reading input file 1 of 1: "out2789043.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out2789043.axy"...
Only searching for solutions within 15.675 degrees of RA,Dec (215.97,69.9688)
  log-odds ratio 32.868 (1.881e+14), 5 match, 0 conflict, 5 distractors, 18 index.
  RA,Dec = (215.973,69.9731), pixel scale 5.96271 arcsec/pix.
  Hit/miss:   Hit/miss: -+-++--+-+(best)--------------------------------------------+---------------------------------------------
Field 1: solved with index index-4116.fits.
Field 1 solved: writing to file ./out2789043.solved to indicate this.
Field: out2789043.xyls
Field center: (RA,Dec) = (215.965755, 69.971346) deg.
Field center: (RA H:M:S, Dec D:M:S) = (14:23:51.781, +69:58:16.844).
Field size: 15.7247 x 10.5543 degrees
Field rotation angle: up is 177.765 degrees E of N
Field parity: neg

WCS keywords and Astrometry.net provenance markers have been successfully stripped from all HDUs in the file.
Opening FITS image file input.fits for reading...  done!
Creating new image file (wcs_input.fits)...  done!
done!
All done!
Keyword does not exist
Keyword has been changed to:
VAST001 = 'wcs_image_calibration.sh' / VaST script name
Keyword does not exist
Keyword has been changed to:
VAST002 = 'local   '           / ASTROMETRYNET_LOCAL_OR_REMOTE
Keyword does not exist
Keyword has been changed to:
VAST003 = 'local   '           / PLATE_SOLVE_SERVER
Keyword does not exist
Keyword has been changed to:
VAST004 = 'iteration02'        / astrometry.net run
The field of view is large: we'll try to run Astromety.net code on the image itself rather than a star list
Reading input file "wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits"...
Found an existing WCS header, will try to verify it.
Extracting sources...
simplexy: found 5605 sources.
Solving...
Reading file "/data_ssd/NMW-TexasTech/workdir/vast_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/out2789043_image_verify.h7cSKN/solution.axy"...
Verifying WCS using indices with quads of size [63.5235, 952.255] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
  log-odds ratio 56.5492 (3.62262e+24), 10 match, 0 conflict, 175 distractors, 10 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ----++---------------+------------+------------------------+----------------------------------------
 --> log-odds 56.5492
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 114.722 (6.65272e+49), 16 match, 0 conflict, 193 distractors, 18 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ----++---+---------+-+----+-------+---------+--------------+----------------------------------------
 --> log-odds 114.722
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 326.694 (7.61006e+141), 39 match, 0 conflict, 244 distractors, 51 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ---+++---+++---+---+++----++-+----+-+-------+----+----++--++-------+---------------+--------------++
 --> log-odds 326.694
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 645.774 (2.85811e+280), 76 match, 0 conflict, 489 distractors, 92 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: --+++++--+++---+---++++++-++-+--+++-+-----+-+-+--+-+--++--++---+---+---+-----+--+--+-----+++-+-+--++
 --> log-odds 645.774
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 1429.66 (inf), 175 match, 0 conflict, 870 distractors, 207 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++-++++--++-+++++++-++++--+++++++++-+++++--++++-++--++++-+--++--+++----+--++++++--++++-+-++-++
 --> log-odds 1429.66
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 2560.42 (inf), 317 match, 0 conflict, 1082 distractors, 382 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++++++-+++++++++++++++--+++++++++-+++++--+++++++++++++-+--+++-++++++++++++++++--++++-+-++-++
 --> log-odds 2560.42
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 4555.21 (inf), 603 match, 0 conflict, 1193 distractors, 751 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++++++-+++++++++++++++-++++++++++-++++++-+++++++++++++-++-+++-++++++++++++++++-++++++++++-++
 --> log-odds 4555.21
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 7539.78 (inf), 1091 match, 0 conflict, 2095 distractors, 1457 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++++++-+++++++++++++++-++++++++++-++++++-+++++++++++++-++-+++-++++++++++++++++-++++++++++-++
 --> log-odds 7539.78
Verifying WCS using indices with quads of size [63.5235, 952.255] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
  log-odds ratio 56.5492 (3.62262e+24), 10 match, 0 conflict, 175 distractors, 10 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ----++---------------+------------+------------------------+----------------------------------------
 --> log-odds 56.5492
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 114.722 (6.65272e+49), 16 match, 0 conflict, 193 distractors, 18 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ----++---+---------+-+----+-------+---------+--------------+----------------------------------------
 --> log-odds 114.722
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 326.694 (7.61006e+141), 39 match, 0 conflict, 244 distractors, 51 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ---+++---+++---+---+++----++-+----+-+-------+----+----++--++-------+---------------+--------------++
 --> log-odds 326.694
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 645.774 (2.85811e+280), 76 match, 0 conflict, 489 distractors, 92 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: --+++++--+++---+---++++++-++-+--+++-+-----+-+-+--+-+--++--++---+---+---+-----+--+--+-----+++-+-+--++
 --> log-odds 645.774
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 1429.66 (inf), 175 match, 0 conflict, 870 distractors, 207 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++-++++--++-+++++++-++++--+++++++++-+++++--++++-++--++++-+--++--+++----+--++++++--++++-+-++-++
 --> log-odds 1429.66
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 2560.42 (inf), 317 match, 0 conflict, 1082 distractors, 382 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++++++-+++++++++++++++--+++++++++-+++++--+++++++++++++-+--+++-++++++++++++++++--++++-+-++-++
 --> log-odds 2560.42
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 4555.21 (inf), 603 match, 0 conflict, 1193 distractors, 751 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++++++-+++++++++++++++-++++++++++-++++++-+++++++++++++-++-+++-++++++++++++++++-++++++++++-++
 --> log-odds 4555.21
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 7539.78 (inf), 1091 match, 0 conflict, 2095 distractors, 1457 index.
  RA,Dec = (215.968,69.9722), pixel scale 5.96651 arcsec/pix.
  Hit/miss:   Hit/miss: ++++++++++++++-+++++++++++++++-++++++++++-++++++-+++++++++++++-++-+++-++++++++++++++++-++++++++++-++
 --> log-odds 7539.78
Got 16 solutions.
Field: wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
Field center: (RA,Dec) = (215.968307, 69.970826) deg.
Field center: (RA H:M:S, Dec D:M:S) = (14:23:52.394, +69:58:14.974).
Field size: 15.7215 x 10.5485 degrees
Field rotation angle: up is 177.797 degrees E of N
Field parity: neg
Creating new FITS file "/data_ssd/NMW-TexasTech/workdir/vast_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/out2789043_image_verify.h7cSKN/solution.new"...

renamed '/data_ssd/NMW-TexasTech/workdir/vast_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/out2789043_image_verify.h7cSKN/solution.new' -> 'wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits'
Checking if the catalog wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat corresponding to the image wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits alredy exist and is non-empty...
Catalog wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat corresponding to the image wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits was not found.
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
verification OK: wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
Generating wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat from image00003.cat
Catalog wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat corresponding to the image wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits created.
verification OK: wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
verification OK: wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
Image size: 937.8'x624.8'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.88"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 14:23:51.835 +69:58:11.87 J2000 4789.000 3195.000 

 ### Converting SExtractor-derived pixel positions to celestial coordinates using xy2sky from WCSTools ###
 ### Converted positions of 6974 stars ###
'wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat' -> 'vast_debug_catalog_before_xy2sky_correction_2800520.cat.log'
'wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits.wcscat.xy2sky.9CfEye' -> 'vast_debug_catalog_after_xy2sky_correction_2800520.cat.log'
The plate-solved (WCS-calibrated) image is saved to wcs_fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
###################################
# Check the image center offset between the reference and the blindly solved unmatched second-epoch image (pointing accuracy)
Reference image center 14:24:01.593 +69:59:33.71
Second-epoch image center 14:23:51.835 +69:58:11.87
Angular distance between the image centers 0.0267 deg.
###################################
The second-epoch image center is consistent with the reference image center (offset 0.0267 deg.) - the star matching failure is probably not a pointing problem
____ VaST output ____

--==VaST 1.0rc90==--

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

Checking the list of input images specified on the command line ...

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ)...  OK
Found a system-wide installation of SExtractor
Cleaning old outNNNNN.dat files.
Done with cleaning!

 VaST was started with the following command line: 
./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits 


Preparing to process 4 input FITS images...


######## Forcing special settings for the transient detection ########
transient search mode: disabling the mag-size filter as it should be switched off when running a transient search!
transient search mode: disabling the bad image filter as it will not help during the transient search!
transient search mode: will not try to gues image saturation limit
transient search mode: no UTC-to-TT time system conversion will be performed!!!
transient search mode: setting the maximum acceptable SExtractor flag to 3
transient search mode: disabling rejectin of images with elliptical stars
transient search mode: not discarding large sources
################
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
Setting the fixed star match radius of 5.00 pix
We have 4 images to process.
SExtractor catalog cache: restored UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits catalog from cache
SExtractor catalog cache: restored UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits catalog from cache
Running SExtractor in 3 parallel threads...
Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
The above guess is based on the non-default gain value specified in default.sex by user
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
Excluding image region:    -1.0    -1.0     1.0     1.0  (defined in bad_region.lst)
Excluding image region:  7500.0     0.0  9576.0  6388.0  (defined in bad_region.lst)
Excluding image region:  1122.0  1550.0  1124.0  1552.0  (defined in bad_region.lst)
Excluding image region:  1637.0  2824.0  1639.0  2826.0  (defined in bad_region.lst)
Excluding image region:  1831.0  2839.0  1833.0  2841.0  (defined in bad_region.lst)
Excluding image region:  1905.0  4570.0  1907.0  4572.0  (defined in bad_region.lst)
Excluding image region:  2012.0  4693.0  2014.0  4695.0  (defined in bad_region.lst)
Excluding image region:  2397.0  4241.0  2399.0  4243.0  (defined in bad_region.lst)
Excluding image region:  2679.0  2807.0  2681.0  2809.0  (defined in bad_region.lst)
Excluding more image regions!.. (will not print them all)
Excluded a total of 31 image regions  (defined in bad_region.lst).
autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
sex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00004.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.7,4.7,4.3,5.2,5.7,6.2 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.8,4.8,4.3,5.3,5.8,6.2 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
Waiting for thread 1 to finish...


Done with SExtractor!

TIMING SExtractor: 5 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-04-19T08:48:47.4361653
Setting observation time using DATE-OBS keyword: 2026-04-19T08:48:47.4361653

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-04-19T08:48:47.436
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
Exposure 20 sec, 19.04.2026 08:48:47.436 UTC = JD(UTC) 2461149.86733143 mid. exp.
The reference image star  8319.634    26.017 is rejected, see bad_region.lst
The reference image star  9222.086    28.702 is rejected, see bad_region.lst
The reference image star  7859.269    21.536 is rejected, see bad_region.lst
The reference image star  7946.386    18.126 is rejected, see bad_region.lst
The reference image star  8330.174    13.854 is rejected, see bad_region.lst
The reference image star  9471.113    15.429 is rejected, see bad_region.lst
The reference image star  9473.811    14.262 is rejected, see bad_region.lst
The reference image star  8664.291    14.725 is rejected, see bad_region.lst
The reference image star  7972.118     9.140 is rejected, see bad_region.lst
The reference image star  8500.098     8.199 is rejected, see bad_region.lst
Excluding more reference image stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 34645, (34643 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 13
 * rejected inside rectangles defined in bad_region.lst: 6627
 * rejected close to frame edge: 162
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.9 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 80
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.

Please note: the CCD position-dependent magnitude correction will be applied.
get_detection_limit_sn(): Detection limit: -7.02
Detection limit from the magnitude-SNR relation= -7.0  (4.0 sigma detection)
The simple faintest star detection limit= -6.7
80 percent brightest stars detection limit= -7.8
Selected detection limit= -7.8
Final detection limit= -7.8 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.04.9 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 87
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
    34511 * detected, using  498/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.014403, number_of_ambiguous_matches=499 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=32121 inliers=32121 rms 0.58 -> 0.58 pix, max corner correction 0.1 pix] fraction_of_ambiguous_matches= 0.013249, number_of_ambiguous_matches=459 
32117 * matched, [CVPOLY iter 2: order=1 pairs=32117 inliers=32117 rms 0.56 -> 0.56 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.007822, number_of_ambiguous_matches=271 
32102 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=32102 inliers=32102 rms 0.50 -> 0.50 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.003060, number_of_ambiguous_matches=106 
32087 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.009
    34511 stars detected, 32087 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 30591, N_manually_selected_comparison_stars = 0
Using 30591 stars for magnitude calibration (before filtering).
Iteratively removing outliers from the linear mag-mag relation (unweighted fit)...
After removing outliers in (X,Y,dm) plane, we are left with 30588 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00000*X_pix -0.00000*Y_pix +0.00387
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 29108 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.02
    37069 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  217352 kB used, 257804 kB peak, 65261732 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-10-22T04:32:41.1651435
Setting observation time using DATE-OBS keyword: 2026-10-22T04:32:41.1651435

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-10-22T04:32:41.165
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
The star  8583.330    14.071 is rejected, see bad_region.lst
The star  7979.195     7.992 is rejected, see bad_region.lst
The star  8654.490    41.576 is rejected, see bad_region.lst
The star  8651.641    47.936 is rejected, see bad_region.lst
The star  8259.437    55.309 is rejected, see bad_region.lst
The star  8683.686    65.246 is rejected, see bad_region.lst
The star  8443.483    70.984 is rejected, see bad_region.lst
The star  8340.848    89.245 is rejected, see bad_region.lst
The star  8386.179    97.456 is rejected, see bad_region.lst
The star  7637.488   113.782 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 6267
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 3
 * rejected inside rectangles defined in bad_region.lst: 649
 * rejected close to frame edge: 39
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.7 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 16
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     6267 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000108, number_of_ambiguous_matches=4 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=6082 inliers=6082 rms 1.06 -> 0.35 pix, max corner correction 9.8 pix] fraction_of_ambiguous_matches= 0.000108, number_of_ambiguous_matches=4 
6081 * matched, [CVPOLY iter 2: order=1 pairs=6081 inliers=6081 rms 0.32 -> 0.32 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000081, number_of_ambiguous_matches=3 
6078 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=6078 inliers=6078 rms 0.23 -> 0.23 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000027, number_of_ambiguous_matches=1 
6076 * matched (3rd iteration). Success!
  rotation [degrees] =   1.824
     6267 stars detected,  6076 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 5499, N_manually_selected_comparison_stars = 0
Using 5499 stars for magnitude calibration (before filtering).
Iteratively removing outliers from the linear mag-mag relation (unweighted fit)...
After removing outliers in (X,Y,dm) plane, we are left with 4281 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00015*X_pix -0.00010*Y_pix +0.10292
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 4281 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.01
 ERROR!!! Magnitude calibration failure. Dropping image. 
    37069 objects stored in memory (1000000 max.)
memory:  215296 kB used, 257804 kB peak, 65261732 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-10-22T04:33:21.9051962
Setting observation time using DATE-OBS keyword: 2026-10-22T04:33:21.9051962

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-10-22T04:33:21.905
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
The star  8581.666     8.492 is rejected, see bad_region.lst
The star  7977.369     2.575 is rejected, see bad_region.lst
The star  7636.483    17.227 is rejected, see bad_region.lst
The star  8652.852    35.818 is rejected, see bad_region.lst
The star  8650.059    42.360 is rejected, see bad_region.lst
The star  8682.011    59.706 is rejected, see bad_region.lst
The star  8441.766    65.524 is rejected, see bad_region.lst
The star  8339.104    83.503 is rejected, see bad_region.lst
The star  8384.440    91.669 is rejected, see bad_region.lst
The star  7635.756   108.134 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 6990
 * rejected as having no flux measurement: 1
 * rejected as having SNR<3.0: 4
 * rejected inside rectangles defined in bad_region.lst: 703
 * rejected close to frame edge: 35
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.8 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 22
 * rejected due to an external image flag: 0
 * rejected as having bad PSF fit: 0
---
You may change some of the filtering parameters by editing src/vast_limits.h and re-running 'make'.
     6990 * detected, using  100/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000108, number_of_ambiguous_matches=4 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=6803 inliers=6803 rms 1.26 -> 0.31 pix, max corner correction 9.4 pix] fraction_of_ambiguous_matches= 0.000108, number_of_ambiguous_matches=4 
6803 * matched, [CVPOLY iter 2: order=1 pairs=6803 inliers=6803 rms 0.31 -> 0.31 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000054, number_of_ambiguous_matches=2 
6800 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=6800 inliers=6800 rms 0.25 -> 0.25 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000027, number_of_ambiguous_matches=1 
6796 * matched (3rd iteration). Success!
  rotation [degrees] =   1.825
     6990 stars detected,  6796 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 6180, N_manually_selected_comparison_stars = 0
Using 6180 stars for magnitude calibration (before filtering).
Iteratively removing outliers from the linear mag-mag relation (unweighted fit)...
After removing outliers in (X,Y,dm) plane, we are left with 5002 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00015*X_pix -0.00008*Y_pix +0.00324
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 5002 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -8.01
 ERROR!!! Magnitude calibration failure. Dropping image. 
    37069 objects stored in memory (1000000 max.)
memory:  215296 kB used, 257804 kB peak, 65261732 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 1 seconds
Done with measurements! =)

Total number of measurements 69156 (69156 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 0 seconds
The lightcurve files have been written, freeing up more memory...
Creating vast_image_details.log ... 

Writing summary file: vast_summary.log ...  OK
Selecting the best aperture for each source
Aperture with index 0 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for  5919 stars
Aperture with index 1 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for     0 stars
Aperture with index 2 (REFERENCE_APERTURE_DIAMETER -0.10*REFERENCE_APERTURE_DIAMETER) seems best for  9002 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  5527 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  3989 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  7650 stars

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

Computing, please wait a bit
...............................................................................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 31910 objects, the longest string is 383 bytes.
Allocating memory for resorting the file.



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



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

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

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

Low percentage of matched images - we'll declare this an unsuccessful VaST run (exit code 1)
_____________________
ERROR running VaST on the field UMi-02-Q2b1x1 (less than 4 images processed)
exp_start= 19.04.2026 08:48:47.436  exp=   20.000  JD= 2461149.86733143  ap=  4.9  rotation=   0.000  *detected= 34645  *matched= 34645  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-48-47_20.00sec_-4.90C_LIGHT_0659.fits
exp_start= 19.04.2026 08:49:38.883  exp=   20.000  JD= 2461149.86792689  ap=  4.9  rotation=  -0.009  *detected= 34511  *matched= 32087  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/UMi-02-Q2b1x1_2026-04-19_03-49-38_20.00sec_-4.90C_LIGHT_0660.fits
exp_start= 22.10.2026 04:32:41.165  exp=   20.000  JD= 2461335.68948108  ap=  4.7  rotation=   1.824  *detected=  6267  *matched=  6076  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits
exp_start= 22.10.2026 04:33:21.905  exp=   20.000  JD= 2461335.68995260  ap=  4.8  rotation=   1.825  *detected=  6990  *matched=  6796  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-10-21_CI_UMi-02-Q2b1x1_233353_TTUQ2b1x1_2619922_DsITf6DJ/fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits
Source monitoring: NOT measuring the monitored positions on the field UMi-02-Q2b1x1 - the transient search raised a processing error: ERROR: large change in astrometric-star counts between the two new images (q2: 26 -> 34, 23.529% > 20%; fd_UMi-02-Q2b1x1_2026-10-21_23-32-41_20.00sec_-0.00C_LIGHT_0185.fits vs fd_UMi-02-Q2b1x1_2026-10-21_23-33-21_20.00sec_-0.00C_LIGHT_0186.fits) - usually a bad plate solution on one of them, sometimes stars crossing a quadrant boundary when the two images are widely offset, rarely a transparency change; continuing processing
Source monitoring: the monitored positions on the field UMi-02-Q2b1x1 are recorded as run_error (rejected by this run, never measured later)
########### Completed UMi-02-Q2b1x1 ###########
The analysis was running at tau
We are allowed to update the exclusion list at tau host
Found ../exclusion_list_TTUQ2.txt
#### The exclusion list before filtering-out asteroids, bad pixels and adding Gaia sources ####
###################################################################################
renamed 'exclusion_list_index_html.txt_noasteroids' -> 'exclusion_list_index_html.txt'
renamed 'exclusion_list_index_html.txt_nohotpixels' -> 'exclusion_list_index_html.txt'
# Count candidates with no identification (that also don't look like hot pix)
Found 0 unidentified candidates (excluding asteroids, hot pixels and known variable stars).
###################################################################################
0 candidates found (excluding asteroids and hot pixels)
This does not look like a test run
###################################################################################
exclusion_list_gaiadr2.txt NOT FOUND
exclusion_list_apass.txt NOT FOUND
IS_THIS_TEST_RUN=NO  ALLOW_EXCLUSION_LIST_UPDATE= YES
#### Nothing to add to the exclusion list ####
The observatory MPC code is V36
############################################################
Positions of planets computed with util/planet_finder/main.py for JD(UT)2461335.68948108 -observatory V36
15:07:55.92 -20:51:05.3 Mercury (0.3mag)
13:47:42.02 -18:24:31.6 Venus (-4.2mag)
09:04:10.48 +18:12:31.0 Mars (1.0mag)
09:40:52.58 +14:35:07.3 Jupiter (-2.0mag)
00:39:26.42 +01:18:22.8 Saturn (0.4mag)
04:10:48.29 +20:54:42.5 Uranus (5.6mag)
00:09:20.07 -00:32:03.0 Neptune (7.7mag)
20:24:11.14 -23:43:01.9 Pluto (14.5mag)
22:36:40.25 -08:17:55.7 Moon (-11.4mag)
-rw-r--r-- 1 apache apache 362 Oct 21 23:36 planets.txt
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT)2461335.68948108:
09:40:46.81 +14:35:40.5 Io (6.1mag)
09:41:03.25 +14:34:07.7 Europa (6.2mag)
09:40:38.61 +14:36:27.1 Ganymede (5.5mag)
09:40:57.87 +14:34:40.0 Callisto (6.8mag)
09:41:25.95 +14:51:37.3 Himalia (15.6mag)
09:40:49.64 +14:35:23.7 Thebe (16.4mag)
09:39:58.66 +14:58:52.3 Elara (17.5mag)
09:42:35.06 +13:59:18.6 Pasiphae (17.8mag)
09:38:43.20 +15:04:44.0 Carme (18.8mag)
00:39:35.18 +01:18:24.7 Titan (8.2mag)
00:39:19.50 +01:18:21.0 Rhea (9.6mag)
00:39:25.19 +01:16:31.9 Iapetus (11.0mag)
00:39:42.12 +01:18:07.6 Hyperion (14.1mag)
00:37:41.54 +01:05:57.9 Phoebe (16.4mag)
-rw-r--r-- 1 apache apache 568 Oct 21 23:36 moons.txt
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT)2461335.68948108:
03:49:07.82 +20:04:26.2 JWST
17:28:22.42 +35:53:17.3 Chandra
06:01:12.26 +28:22:56.2 XMM-Newton
-rw-r--r-- 1 apache apache 96 Oct 21 23:36 spacecraft.txt
############################################################
Positions of bright comets computed with util/comet_finder/main.py for JD(UT)2461335.68948108 -observatory V36
03:41:37.79 +20:09:36.1 17.1mag P/1996 R2 (Lagerkvist)
07:41:38.53 +37:33:56.0 18.0mag P/2004 V5 (LINEAR-Hill)
07:41:43.55 +37:33:43.3 18.0mag P/2004 V5-A (LINEAR-Hill)
07:41:04.43 +37:33:55.7 18.0mag P/2004 V5-B (LINEAR-Hill)
05:02:27.32 +40:52:06.9 17.9mag P/2009 Y2 (Kowalski)
18:35:00.43 -33:13:32.7 14.9mag P/2010 H2 (Vales)
07:43:22.74 -73:06:50.9 17.2mag C/2014 UN271 (Bernardinelli-Bernstein)
06:14:15.30 +34:57:50.3 17.7mag C/2017 K2 (PANSTARRS)
04:40:52.55 +48:11:16.0 17.6mag P/2021 N1 (ZTF)
07:33:39.31 +25:22:24.7 16.9mag C/2022 N2 (PANSTARRS)
09:06:10.27 +36:54:06.7 16.3mag C/2024 E1 (Wierzchos)
18:30:16.30 +41:07:06.5 17.4mag C/2024 J3 (ATLAS)
05:45:50.57 -13:39:59.7 16.5mag C/2024 T5 (ATLAS)
12:37:42.42 +15:07:02.4 16.0mag C/2025 V2 (Rankin)
14:02:07.21 -03:36:48.4 16.4mag C/2025 Y1 (ATLAS)
19:26:53.90 +60:16:42.5 15.5mag C/2026 A2 (Bok)
02:23:52.29 +41:32:39.5 18.0mag C/2026 B2 (Sun-Gao)
12:56:00.95 +15:25:38.3 17.7mag A/2026 E1
16:23:57.06 -52:12:12.6 13.6mag P/2026 R2 (Leonard)
19:22:53.36 -05:06:13.0 16.6mag P/2026 T1 (ATLAS)
23:59:24.68 +17:01:54.4 17.2mag 2P/Encke
23:10:46.28 -29:05:57.7 14.9mag 10P/Tempel
02:25:10.08 +35:59:04.8 16.5mag 11P/Tempel-Swift-LINEAR
12:18:22.74 -09:02:40.8 16.3mag 29P/Schwassmann-Wachmann
00:16:04.74 -09:04:45.8 15.7mag 65P/Gunn
07:48:51.16 +14:51:14.6 13.9mag 78P/Gehrels
02:48:25.74 +13:45:46.8 17.8mag 88P/Howell
08:17:56.98 +43:07:46.1 17.0mag 112P/Urata-Niijima
09:26:44.26 +10:12:06.5 17.7mag 114P/Wiseman-Skiff
12:02:53.87 +10:47:41.1 14.8mag 123P/West-Hartley
14:34:25.59 -35:08:44.8 18.0mag 124P/Mrkos
20:29:41.26 +10:12:25.5 9.8mag 161P/Hartley-IRAS
10:44:56.17 -00:45:08.1 15.2mag 169P/NEAT
03:21:50.76 +03:18:36.2 15.0mag 220P/McNaught
06:16:39.14 +47:29:03.3 15.5mag 260P/McNaught
07:42:24.49 +25:20:33.3 17.7mag 266P/Christensen
-rw-r--r-- 1 apache apache 1.8K Oct 21 23:36 comets.txt
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
22:14:03.37 -45:07:18.60  ASASSN-26fm   VIZIER
01:57:48.19 -33:14:42.30  SN 2026aedl   -------
18:05:22.06 +17:52:41.00  ASASSN-26fn  2026-10-11.74 15.23
21:50:55.86 -02:51:49.30  SN2026acyb  2026-10-9.85 16.83
03:40:34.04 +02:31:56.70  SN2026acvp  2026-10-9.95 17.75
04:33:25.91 -13:41:04.20  SN2026adhl   -------
09:20:05.05 +27:03:12.40  SN2026aeif   -------
02:58:07.77 -65:18:52.90  ASASSN-26fl   VIZIER
02:49:03.98 -49:55:57.00  SN 2026adfy  2026-10-4.88 16.61
22:03:46.31 -11:07:57.70  AT2026adgn  2026-10-4.28 -2.56
15:03:12.98 +49:51:05.40  ASASSN-26fj   VIZIER
08:07:27.96 -65:51:03.90  ASASSN-26fi  2026-10-1.36 15.82
21:02:34.66 +23:57:26.20  ASASSN-26fh  2026-10-1.27 15.94
20:00:16.62 +03:26:29.90  AT2026adfv   -------
00:08:42.74 -32:33:16.50  SN2026abhc   -------
21:02:30.26 -19:27:41.80  SN2026acxa   -------
04:39:17.45 -28:06:12.40  ASASSN-26fg   VIZIER
05:25:07.80 +04:38:32.40  SN2026aajs   -------
19:56:12.67 +08:25:27.70  AT2026acgs   -------
00:02:34.06 +52:55:18.90  ASASSN-26ff  2026-09-16.38 15.41
23:44:33.18 +17:46:12.20  SN2026yjv   -------
16:21:12.24 +57:37:51.30  SN 2026aafh   -------
23:36:00.27 -19:28:18.00  SN 2026aaks  2026-09-14.44 16.89
16:35:24.86 -05:32:38.20  SN2026aasi   -------
16:46:08.71 +37:25:21.80  SN2026aafk  2026-09-13.25 17.4
23:48:37.86 +50:25:24.60  SN2026aafs   -------
21:20:27.02 +02:10:42.50  SN2026aagh   -------
08:02:26.85 -24:37:44.10  ASASSN-26fe  2026-09-13.34 13.67
02:29:34.91 +23:06:56.30  SN2026aars   -------
02:47:25.52 -32:58:34.50  SN 2026znh   -------
04:59:14.53 -83:27:58.80  ASASSN-26fd  2026-09-9.11 17.27
17:52:06.79 -23:43:20.70  ASASSN-26fc   VIZIER
03:52:53.26 -14:19:28.70  SN 2026zfw   -------
01:53:26.46 +10:07:25.10  SN2026aacj   -------
20:04:34.47 +62:38:38.10  SN2026zji  2026-09-7.14 15.87
22:37:05.64 +34:24:35.00  SN2026aaiv   -------
22:24:21.29 -10:25:31.60  ASASSN-26fb  2026-09-5.3 13.93
00:44:54.28 +41:33:10.50  AT2026aabo  2026-09-3.29 15.02
00:52:12.40 -58:22:08.60  SN 2026zhl  2026-08-31.92 16.51
19:53:57.87 +61:00:19.70  ASASSN-26fa   VIZIER
00:21:50.96 -09:29:16.30  AT2026zwp  2026-08-31.41 15.59
19:45:06.20 +18:22:48.80  V488  2026-08-30.13 9.37
18:25:12.74 -22:25:28.60  V8055   -------
17:17:45.96 +64:31:40.10  ASASSN-26ez   VIZIER
19:02:47.09 +58:08:21.00  AT2026zwo   -------
04:20:07.58 -42:26:59.90  AT2026zjy   -------
03:08:18.02 +11:54:46.50  SN2026ymb  2026-08-23.4 16.44
20:22:32.48 -50:45:14.30  SN2026yid   -------
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   -------
23:01:28.67 -61:00:39.00  SN 2026yib   -------
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   VIZIER
13:53:14.21 +00:26:52.00  SN 2026wkv   -------
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   -------
01:10:22.05 -09:34:08.50  SN2026weo   -------
00:56:54.35 -35:55:29.40  AT2026wdy   -------
22:08:07.63 -53:03:58.90  AT2026wek   -------
14:51:51.34 +66:13:24.60  ASASSN-26ev   VIZIER
12:06:50.79 -36:16:06.20  SN2026wgm   -------
16:56:36.90 -59:29:26.00  ASASSN-26er   VIZIER
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   VIZIER
12:18:47.98 -30:48:47.50  ASASSN-26et   VIZIER
13:00:47.82 +15:42:17.60  SN2026uwk   -------
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   VIZIER
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   VIZIER
04:50:01.03 -02:22:33.80  ASASSN-26ej   VIZIER
18:34:55.28 -31:41:00.90  ASASSN-26ek   VIZIER
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   VIZIER
10:00:46.44 -32:36:31.10  AT 2023mhb   -------
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   VIZIER
19:33:53.06 -07:15:00.80  ASASSN-22le   -------
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   -------
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   -------
20:21:30.50 -32:03:40.10  ASASSN-26ee   VIZIER
19:37:44.09 -05:35:42.80  AT2026ryu   -------
11:06:55.46 -04:07:04.50  AT2026qqg   -------
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   VIZIER
19:59:01.43 -32:07:34.30  ASASSN-26eb   VIZIER
18:46:50.35 -57:44:13.20  SN 2026qqp   -------
19:17:31.69 -39:55:29.90  ASASSN-26dz   VIZIER
-rw-r--r-- 1 apache apache 9.3K Oct 21 23:36 asassn_transients_list.txt
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
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
00:42:50.38 +41:18:58.76  PNV J00425038+4118587  2026-09-04.1512  18.2mag
00:42:12.76 +41:16:28.4  PNV J00421276+4116284  2026-09-10.9176  18.67Cmag
17:52:06.80 -23:43:20.7  TCP J17520680-2343207  2026-09-08.7896  12.6mag
00:42:40.94 +41:15:37.1  PNV J00424094+4115371  2026-09-17.8925  18.3mag
08:49:20.13 -09:19:15.8  TCP J08492013-0919158  2026-09-18.4698  13.3mag
00:42:13.93 +41:16:35.6  PNV J00421393+4116356  2026-09-22.6597  19.66Cmag
18:14:01.58 +15:13:55.5  TCP J18140158+1513555  2026-09-24.4645  14.1mag
00:42:36.61 +41:13:50.5  TCP J00423661+4113505  2026-09-29.7462  17.4mag
22:03:46.29 -11:07:57.8  TCP J22034629-1107578  2026-09-29.7438  14.51Cmag
22:05:02.06 +20:49:01.2  TCP J22050206+2049012  2026-10-03.5715  17.13Cmag
00:38:15.01 +41:14:47.2  TCP J00381501+4114472  2026-10-08.5978  17.72Cmag
01:06:05.83 +09:51:20.4  TCP J01060583+0951204  2026-10-10.8543  14.54Cmag
17:54:18.76 -27:36:36.2  TCP J17541876-2736362  2026-10-12.3993  10.8mag
09:56:00.79 +69:06:15.2  PNV J09560079+6906152  2026-10-14.9274  19.38Cmag
00:43:30.83 +41:26:55.3  PNV J00433083+4126553  2026-10-17.5651  18.61Cmag
04:57:32.08 +30:15:41.6  TCP J04573208+3015416  2026-10-17.7818  18.21Cmag
05:21:07.64 +23:38:21.3  TCP J05210764+2338213  2026-10-18.4020  10.3mag
05:34:11.01 +28:45:30.5  TCP J05341101+2845305  2026-10-18.3604  16.6mag
-rw-r--r-- 1 apache apache 191K Oct 21 23:36 tocp_transients_list.txt
############################################################
Truncated list of recent TNS transients from https://www.wis-tns.org/ :
01:10:49.770 +02:38:30.67  AT 2026aebt  2026-09-30.66 21.23
01:05:19.330 -00:11:32.74  AT 2026aebs  2026-09-30.65 21.65
01:35:09.144 -01:03:49.94  AT 2026aebr  2026-09-20.83 23.01
01:02:37.840 +04:28:02.19  AT 2026aebq  2026-09-20.82 22.78
01:28:12.190 +05:17:51.61  AT 2026aebp  2026-09-13.85 22.41
22:47:15.050 +03:42:02.27  AT 2026aebo  2026-09-21.73 22.04
23:45:08.040 +01:05:55.47  AT 2026aebn  2026-09-30.76 21.95
23:25:27.380 -00:44:47.15  AT 2026aebm  2026-09-15.74 22.29
00:43:52.136 -04:09:35.26  SN 2026aebl  2026-09-20.33 20.4818
23:57:05.580 +47:22:43.66  AT 2026aebk  2026-10-02.25 20.1485
21:45:41.050 -07:03:45.02  SN 2026aebj  2026-10-02.17 19.9213
01:27:33.024 +84:50:25.70  AT 2026aebi  2026-10-03.20 19.7953
00:26:39.140 -03:17:00.58  AT 2026aebh  2026-10-02.27 20.1095
21:28:41.378 +03:57:48.01  SN 2026aebg  2026-10-01.26 20.3099
00:57:54.471 -27:53:53.62  AT 2026aebf  2026-09-30.33 19.3916
22:47:58.650 +03:51:05.09  AT 2026aebe  2026-09-30.23 20.1921
23:27:00.498 -10:43:55.07  AT 2026aebd  2026-10-01.39 20.03
23:40:24.092 -09:27:20.60  AT 2026aebc  2026-10-01.39 20.07
00:56:09.593 -01:35:47.87  AT 2026aebb  2026-10-01.40 20.95
01:31:39.979 -01:39:43.87  AT 2026aeba  2026-10-01.46 21.45
-rw-r--r-- 1 apache apache 89K Oct 21 23:36 tns_transients_list.txt

=== Transient Factory Profiling ===
Started: Wed Oct 21 23:36:24 CDT 2026
=======================================
TIMING SExtractor: 2 seconds
TIMING matching_and_photometry: 1 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 0 seconds
    VAST_RUN_default.sex.telephoto_lens_onlybrightstars_v1: 4s (0.07 min)
    WCS_CACHE_SETUP: 0s (0.00 min)
    WCS_CALIBRATION_AND_EPHEMERIS: 30s (0.50 min)
    PLATE_VERIFY_AND_POINTING: 0s (0.00 min)
    UCAC5_PLATE_SOLVING: 0s (0.00 min)
    MAGNITUDE_CALIBRATION: 5s (0.08 min)
    MAGCAL_SANITY_CHECK: 0s (0.00 min)
      FILTER_MAGNITUDE_CONSOLIDATED: 0s (0.00 min)
      FILTER_FRAME_EDGE: 0s (0.00 min)
      FILTER_SECOND_EPOCH_VERIFY: 0s (0.00 min)
    CANDIDATE_FILTERING_TOTAL: 0s (0.00 min)
    EXCLUSION_LIST_PREPARATION: 0s (0.00 min)
    SEEING_AND_LIMITING_MAG: 0s (0.00 min)
    WAIT_FOR_UCAC5: 3s (0.05 min)
    WCS_IMAGE_ARCHIVING: 0s (0.00 min)
    HTML_REPORT: 0s (0.00 min)
  SE_CONFIG_default.sex.telephoto_lens_onlybrightstars_v1: 42s (0.70 min)
TIMING SExtractor: 5 seconds
TIMING matching_and_photometry: 1 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 2 seconds
FIELD_UMi-02-Q2b1x1: 97s (1.62 min)
=======================================
TOTAL_RUNTIME: 99s (1.65 min)
Finished: Wed Oct 21 23:38:03 CDT 2026