FITS images used in this processing run:

Field UMa-01-Q2b1x1 reference image: UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
Field UMa-01-Q2b1x1 reference image: UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
Field UMa-01-Q2b1x1 second-epoch image: UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
Field UMa-01-Q2b1x1 second-epoch image: UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits

## VaST run with SExtractor config file default.sex.telephoto_lens_onlybrightstars_v1 ##
Images processed 4
Images used for photometry 4
Ref.  image: 2461082.79736027 11.02.2026 07:08:01.927   /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
First image: 2461082.79736027 11.02.2026 07:08:01.927   /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
Last  image: 2461289.65927288 06.09.2026 03:49:11.177   /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
JD time system (TT/UTC/UNKNOWN): UTC
Transient candidates found: 2
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.51
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: 7 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):  6119
Objects passed selection criteria:  6086
Measurements per detected object (mean, median, min, max):    2.5    2.0    2    4
Measurements per selected object (mean, median, min, max):    2.5    2.0    2    4
Average stars detected per image: 4042.75
Average stars matched: 3864.25 (95.5847 %)
Memory usage VmPeak:   233196 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Wed Sep  2 15:05:04 CDT 2026
VaST build number  1.0rc89-201-ga7d4d23b
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-09-02)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Sat Sep  5 23:05:39 CDT 2026
Host name: tau
############################################################
***** 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
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: 
UMa-01-Q2b1x1
#######################################
########### Starting UMa-01-Q2b1x1 ###########
Processing UMa-01-Q2b1x1
server tau has sufficient free disk space available: 301177 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 301165 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.png' -> 'transient_report/UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits_preview.png'

UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits


renamed 'UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.png' -> 'transient_report/UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits_preview.png'

UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.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= 533.1221
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 561.4736
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1335.7879
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 338.2414
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1335.3523
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 323.5628
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 2.50559
INFO:                  SECOND_EPOCH__SD_ratio= 0.045
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 =     28.2199993133545 / [degC] Focuser temperature
AMBTEMP =                 28.7 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-09-05T22:48:25.7746750' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-09-06T03:48:25.7746750' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61289.1586316437 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-09-06T03:48:35.6791523' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61289.1587462849 / 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      =     143.996907451916 / [deg] RA of telescope" status=0
Record 32: "DEC     =     69.9995275471165 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     15.0983333333333 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =             351.6425 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.78700981394325 / 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  = 'UMa-01'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '09 36 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  =                20454 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20454 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     28.2199993133545 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     28.2199993133545 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 13.8 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 40.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=                900.2 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 28.7 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                334.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=            14.801184 / [kph] Wind gust" status=0
Record 61: "WINDSPD =            11.900952 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/d_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits :)

Spent 0.827925 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/d_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 37096.658242
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits :)


No overscan detected - all values seem high! (left_median=24199.0, right_median=29433.0)
renamed 'mff_TTUQ2b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                  0.0 / [degC] CCD temperature
FOCTEMP =     28.2099990844727 / [degC] Focuser temperature
AMBTEMP =                 28.5 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits 
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
Header: 74 keys total, 33 keys left
Record 0: "" status=0
Record 1: "SIMPLE  =                    T / C# FITS" status=0
Record 2: "BITPIX  =                   16" status=0
Record 3: "NAXIS   =                    2 / Dimensionality" status=0
Record 4: "NAXIS1  =                 9576" status=0
Record 5: "NAXIS2  =                 6388" status=0
Record 6: "BZERO   =                32768" status=0
Record 7: "EXTEND  =                    T / Extensions are permitted" status=0
Record 8: "IMAGETYP= 'LIGHT'              / Type of exposure" status=0
Record 9: "EXPOSURE=                 20.0 / [s] Exposure duration" status=0
Record 10: "EXPTIME =                 20.0 / [s] Exposure duration" status=0
Record 11: "DATE-LOC= '2026-09-05T22:49:11.1770212' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-09-06T03:49:11.1770212' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61289.1591571411 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-09-06T03:49:21.0821830' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61289.1592717823 / 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      =     143.996907331707 / [deg] RA of telescope" status=0
Record 32: "DEC     =     69.9995276000133 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     15.0752777777778 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     351.706388888889 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.79249986074687 / 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  = 'UMa-01'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '09 36 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  =                20454 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20454 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     28.2099990844727 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     28.2099990844727 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 14.0 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 41.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               900.31 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 28.5 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                341.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             13.00104 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             8.600688 / [kph] Wind speed" status=0
Record 62: "ROWORDER= 'TOP-DOWN'           / FITS Image Orientation" status=0
Record 63: "EQUINOX =               2000.0 / Equinox of celestial coordinate system" status=0
Record 64: "SWCREATE= 'N.I.N.A. 3.2.0.9001 (x64)' / Software that created this file" status=0
Record 65: "QHY_EXP =            20.000096 / [s] Actual exposure time" status=0
Record 66: "QHY_PP  =              13888.0 / [ps] pixelPeriod" status=0
Record 67: "QHY_LP  =              85000.0 / [ns] linePeriod" status=0
Record 68: "GPS_LP  =              85000.0 / [ns] linePeriod" status=0
Record 69: "QHY_FP  =           20000160.0 / [us] framePeriod" status=0
Record 70: "QHY_CPL =               6120.0 / clocksPerLine" status=0
Record 71: "QHY_LPF =             235295.0 / linesPerFrame" status=0
Record 72: "QHY_AET =           20000096.0 / [us] actualExposureTime" status=0
Record 73: "QHY_LEM =                    T / isLongExposureMode" status=0
Record 74: "QHY_OFF0=             3767.777 / [us] RollingShutterEndOffset row 0" status=0
Allocating memory for image, dark and result arrays...
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
SET-TEMP= 0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
CCD-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
CCD-TEMP= -0.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.fit 9576 6388  16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/d_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits :)

Spent 0.996030 seconds 
renamed 'mdark_TTUQ2b1x1_0C_20s_2026-08-12_multinight.png' -> 'transient_report/dark.png'
try_to_calibrate_the_input_frame(): selected flat field /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit from directory /var/www/nmw_calibration/TTUQ2b1x1/flats
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/d_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits 9576 6388  16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-08-12_multinight.fit 9576 6388  16 bitpix
Avarage count on flat field image: 37096.658242
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits :)


No overscan detected - all values seem high! (left_median=24199.0, right_median=29433.0)
renamed 'mff_TTUQ2b1x1_2026-08-12_multinight.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
Dark frame used to calibrate the second-epoch images:



Flat field used to calibrate the second-epoch images:



after the calibration attempt:
SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
Previews of the CALIBRATED second-epoch images:


fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits



fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.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/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
  
SExtractor catalog cache: saved UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits.cat to cache
SExtractor catalog cache: saved UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.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/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
Checking WCS cache directory local_wcs_cache
Checking WCS cache directory /mnt/usb/NMW_NG/solved_reference_images
Found WCS cache directory /mnt/usb/NMW_NG/solved_reference_images
Checking WCS cache directory /home/NMW_web_upload/solved_reference_images
Checking WCS cache directory /dataX/kirx/NMW_NG_rt3_autumn2019/solved_reference_images
The reference JD(UT) for computing planet and comet positions: 2461289.65874738
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_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits exists and is non-empty
wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits exists and is non-empty
wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits exists and is non-empty
wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits exists and is non-empty
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits (1st reference image)
verification OK: wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
Image size: 941.6'x627.2'  15.7(deg)x10.5(deg)  9576x6388 pix
Image scale: 5.90"/pix along the X axis and 5.89"/pix along the Y axis
Image center: 09:36:20.346 +69:59:16.26 J2000 4789.000 3195.000 
###################################
The image scale is 5.90"/pix, setting the soft and hard astrometric limits for filtering second-epoch detections: 5.9" and 8.9"
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits (1st new image)
verification OK: wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
Image size: 937.2'x625.1'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 09:35:56.587 +70:01:11.26 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the first second-epoch image (pointing accuracy)
Reference image center 09:36:20.346 +69:59:16.26
Second-epoch image center 09:35:56.587 +70:01:11.26
Angular distance between the image centers 0.0465 deg.
Soft limit: 0.50 deg.  Hard limit: 1.00 deg.
###################################
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits (2nd new image)
verification OK: wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
Image size: 937.2'x625.1'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 09:35:52.476 +70:01:03.69 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the second second-epoch image (pointing accuracy)
Reference image center 09:36:20.346 +69:59:16.26
Second-epoch image center 09:35:52.476 +70:01:03.69
Angular distance between the image centers 0.0497 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  09:35:56.587 +70:01:11.26
Second-epoch second image center 09:35:52.476 +70:01:03.69
Angular distance between the image centers 0.00622 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/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits &> /tmp/tmp.kSYrhhJh99
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits &> /tmp/tmp.oDEW3hZ81K
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits &> /tmp/tmp.N6VJ2tP1kI
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits &> /tmp/tmp.T2f6CUWmoq
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
Calibrating the magnitude scale
Found non-empty wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.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_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits and wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.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_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits and wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits.wcscat 
Found non-empty wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits and wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits.wcscat
The reference image (wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits) and catalog (wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits.wcscat) found
'wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits.wcscat' -> 'wcsmag.cat'
Read 8779 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 117.0324 to 171.9972 deg, Dec +62.9079 to +75.4793 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 117.0324 to 171.9972 deg, Dec 62.9079 to 75.4793 deg
Loaded 9306 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): 5117 out of 5413 total matches.
Matched with Tycho-2 5413 out of 8779 detected stars.
The calibration function type and coefficients are written to calib.txt_param
util/calibrate_magnitude_scale 0.000000 1.000000 22.863700
a=0.000000 b=1.000000 c=22.863700
From vast_summary.log: estimated ref. image limiting mag.:  -7.51
Updating vast_summary.log: Estimated ref. image limiting mag.:  15.35

Updated vast_limiting_magnitude.log with calibrated magnitudes
Working...
Please, PLEASE, be patient!!!
All lightcurves processed!  =)
Estimated ref. image limiting mag.:  15.35

Lightcurve magnitude calibration plot:


Preparing per-reference-image forced-photometry calibration (method=tycho2 band=V)
Read 8779 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 117.0324 to 171.9972 deg, Dec +62.9079 to +75.4793 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 117.0324 to 171.9972 deg, Dec 62.9079 to 75.4793 deg
Loaded 9306 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): 5117 out of 5413 total matches.
Matched with Tycho-2 5413 out of 8779 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00001.cat.aperture for wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
Forced-photometry filter: calibrated wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits -> calib.txt_param_ref_wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits (aperture=6.0)
Read 8894 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 117.0326 to 171.9963 deg, Dec +62.9079 to +75.4793 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 117.0326 to 171.9963 deg, Dec 62.9079 to 75.4793 deg
Loaded 9306 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): 5133 out of 5416 total matches.
Matched with Tycho-2 5416 out of 8894 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00002.cat.aperture for wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
Forced-photometry filter: calibrated wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits -> calib.txt_param_ref_wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits (aperture=6.0)
____ End of magnitude calibration ____
Applying consolidated magnitude filters...
Preparing the exclusion lists for this field
Done with filtering
Found 2 candidate transients before the final filtering.  (Hard limit: 10000)
Median FWHM seeing for isolated stars:
 2.1 pix  UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
 2.1 pix  cp: UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
 2.6 pix  fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
 2.7 pix  fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
cannot create regular file 'local_wcs_cache/': Not a directory
Limiting magnitude estimates:
 15.4 mag.  UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
 15.4 mag.  UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
 13.9 mag.  fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
 14.0 mag.  fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
All-image limiting magnitude estimate:  13.9 (SNR )  11.5 (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
############ /tmp/tmp.kSYrhhJh99 (6) ############
Parsing command line arguments...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits is already a symlink and we do not allow symlinks on symlinks
The guess is based on the existing WCS header.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits 573.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits is already a symlink and we do not allow symlinks on symlinks
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits' -> 'wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.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/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
WCS_IMAGE_NAME=wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
WCS-calibrated image found: wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
Checking if the catalog wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits.wcscat corresponding to the image wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits alredy exist and is non-empty...
Catalog wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits.wcscat corresponding to the image wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
WCS catalog name: wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.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=680, bad_region=2580, passed=8779
Got 8779 stars (including 5709 good ones) from the SExtractor catalog wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits.wcscat 
util/solve_plate_with_UCAC5 got 8779 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 941.6'
Seting catalog search parameters based on the expected field of view 941.6 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013078 (47.1 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010462 (37.7 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 764 to 829 (Dec 62.9 to 75.5)
Done reading UCAC5 zone files...
Matched 4900 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4896 matched stars entering correct_measured_positions(), 4896 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.35" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4896 matched stars entering correct_measured_positions(), 6709 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 

ITERATION 02 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 764 to 829 (Dec 62.9 to 75.5)
Done reading UCAC5 zone files...
Matched 4900 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4896 matched stars entering correct_measured_positions(), 6709 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.35" 
Accuracy estimation diagnostic: 4896 matched stars entering correct_measured_positions(), 6709 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.35" 
Excluding outliers - 4896 stars left (next iteration limit 5385)
Stop iterations.


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

SIP_REFIT: util/identify.sh trusts the WCS of wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits N_match=4896 sigma_overall_arcsec=0.403 sigma_q1_arcsec=0.506 sigma_q2_arcsec=0.380 sigma_q3_arcsec=0.361 sigma_q4_arcsec=0.357 n_q1=1463 n_q2=1040 n_q3=1488 n_q4=905 worst_quadrant_to_overall_ratio=1.256
The image catalog is written to wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits -region wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.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.oDEW3hZ81K (6) ############
Parsing command line arguments...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits is already a symlink and we do not allow symlinks on symlinks
The guess is based on the existing WCS header.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits 573.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits is already a symlink and we do not allow symlinks on symlinks
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits' -> 'wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.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/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
WCS_IMAGE_NAME=wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
WCS-calibrated image found: wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
Checking if the catalog wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits.wcscat corresponding to the image wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits alredy exist and is non-empty...
Catalog wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits.wcscat corresponding to the image wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
WCS catalog name: wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.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=664, bad_region=2596, passed=8894
Got 8894 stars (including 5826 good ones) from the SExtractor catalog wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits.wcscat 
util/solve_plate_with_UCAC5 got 8894 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 941.6'
Seting catalog search parameters based on the expected field of view 941.6 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013078 (47.1 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010462 (37.7 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 764 to 829 (Dec 62.9 to 75.5)
Done reading UCAC5 zone files...
Matched 4898 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: 0.35" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4893 matched stars entering correct_measured_positions(), 6815 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 764 to 829 (Dec 62.9 to 75.5)
Done reading UCAC5 zone files...
Matched 4898 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(), 6815 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.34" 
Accuracy estimation diagnostic: 4893 matched stars entering correct_measured_positions(), 6815 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.35" 
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_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits N_match=4893 sigma_overall_arcsec=0.406 sigma_q1_arcsec=0.517 sigma_q2_arcsec=0.390 sigma_q3_arcsec=0.378 sigma_q4_arcsec=0.341 n_q1=1470 n_q2=1032 n_q3=1493 n_q4=898 worst_quadrant_to_overall_ratio=1.275
The image catalog is written to wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits -region wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.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.N6VJ2tP1kI (6) ############
Parsing command line arguments...
The minor axis of the CCD chip should be 24.0 mm based on the derived pixel size of 3.8 um
Internal estimated FoV 605.3'
The guess is based on the FOCALLEN keyword.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
WCS_IMAGE_NAME=wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
WCS-calibrated image found: wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
Checking if the catalog wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits.wcscat corresponding to the image wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits alredy exist and is non-empty...
Catalog wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits.wcscat corresponding to the image wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
WCS catalog name: wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.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=162, bad_region=402, passed=2354
Got 2354 stars (including 1811 good ones) from the SExtractor catalog wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits.wcscat 
util/solve_plate_with_UCAC5 got 2354 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.2'
Seting catalog search parameters based on the expected field of view 937.2 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013017 (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 0.010413 (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 771 to 828 (Dec 64.4 to 75.3)
Done reading UCAC5 zone files...
Matched 1743 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1738 matched stars entering correct_measured_positions(), 1736 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.42" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1738 matched stars entering correct_measured_positions(), 1996 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.42" 

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 771 to 828 (Dec 64.4 to 75.3)
Done reading UCAC5 zone files...
Matched 1741 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 1736 matched stars entering correct_measured_positions(), 2000 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.43" 
Accuracy estimation diagnostic: 1736 matched stars entering correct_measured_positions(), 1992 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.43" 
Excluding outliers - 1736 stars left (next iteration limit 1911)
Stop iterations.


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

SIP_REFIT: the 1736 catalog matches do not cover the frame (1021/499/201/15 per quadrant, need 108 in each) - keeping the original solution
WCS_QUALITY_DIAG: file=fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits N_match=1736 sigma_overall_arcsec=0.453 sigma_q1_arcsec=0.401 sigma_q2_arcsec=0.542 sigma_q3_arcsec=0.547 sigma_q4_arcsec=0.647 n_q1=1021 n_q2=499 n_q3=201 n_q4=15 worst_quadrant_to_overall_ratio=1.427
The image catalog is written to wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits -region wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.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.T2f6CUWmoq (6) ############
Parsing command line arguments...
The minor axis of the CCD chip should be 24.0 mm based on the derived pixel size of 3.8 um
Internal estimated FoV 605.3'
The guess is based on the FOCALLEN keyword.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
WCS_IMAGE_NAME=wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
WCS-calibrated image found: wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
Checking if the catalog wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits.wcscat corresponding to the image wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits alredy exist and is non-empty...
Catalog wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits.wcscat corresponding to the image wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
WCS catalog name: wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.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=115, bad_region=372, passed=2187
Got 2187 stars (including 1721 good ones) from the SExtractor catalog wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits.wcscat 
util/solve_plate_with_UCAC5 got 2187 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.2'
Seting catalog search parameters based on the expected field of view 937.2 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013017 (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 0.010413 (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 771 to 828 (Dec 64.4 to 75.3)
Done reading UCAC5 zone files...
Matched 1677 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1676 matched stars entering correct_measured_positions(), 1672 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.40" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 1676 matched stars entering correct_measured_positions(), 1890 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 771 to 828 (Dec 64.4 to 75.3)
Done reading UCAC5 zone files...
Matched 1677 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 1676 matched stars entering correct_measured_positions(), 1891 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.41" 
Accuracy estimation diagnostic: 1676 matched stars entering correct_measured_positions(), 1891 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.42" 
Excluding outliers - 1676 stars left (next iteration limit 1843)
Stop iterations.


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

SIP_REFIT: the 1676 catalog matches do not cover the frame (1011/459/192/14 per quadrant, need 104 in each) - keeping the original solution
WCS_QUALITY_DIAG: file=fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits N_match=1676 sigma_overall_arcsec=0.433 sigma_q1_arcsec=0.387 sigma_q2_arcsec=0.562 sigma_q3_arcsec=0.482 sigma_q4_arcsec=0.675 n_q1=1011 n_q2=459 n_q3=192 n_q4=14 worst_quadrant_to_overall_ratio=1.558
The image catalog is written to wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits -region wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.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_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits to local_wcs_cache/
'wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits' -> 'local_wcs_cache/wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits'
Saving the final (post-refit) wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits to local_wcs_cache/
'wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits' -> 'local_wcs_cache/wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits'
Saving the final (post-refit) wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits to local_wcs_cache/
'wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits' -> 'local_wcs_cache/wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits'
Saving the final (post-refit) wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits to local_wcs_cache/
'wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits' -> 'local_wcs_cache/wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits'
###################################
# Pre-local-correction WCS quality summary (see WCS_QUALITY_DIAG lines above)
ref1=UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits sigma_overall=0.403 worst_q_ratio=1.256
ref2=UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits sigma_overall=0.406 worst_q_ratio=1.275
new1=fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits sigma_overall=0.453 worst_q_ratio=1.427
new2=fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits sigma_overall=0.433 worst_q_ratio=1.558
reference average sigma_overall=0.4045 worst_q_ratio=1.2655
warn-on-ratio threshold: 2.0x reference
###################################

Astrometric residual vector field (catalog-matched stars):

plot_astrometric_residuals_xy.py: wrote wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292_astrometric_residuals.png (4896 matched stars from wcs_UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.36 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293_astrometric_residuals.png (4893 matched stars from wcs_UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.36 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130_astrometric_residuals.png (1736 matched stars from wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.40 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131_astrometric_residuals.png (1676 matched stars from wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.39 arcsec)


Copying WCS-calibrated images back to input directory
Saving fully-calibrated image wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits'
Saving fully-calibrated image wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits'
Preparing the HTML report for the field UMa-01-Q2b1x1 with default.sex.telephoto_lens_onlybrightstars_v1
make_report_in_HTML.sh Phase 1 (network queries): 0s
Pre-generating preview images in parallel...
Done pre-generating preview images.
Pre-generating finding charts in parallel...
Done pre-generating finding charts.
make_report_in_HTML.sh Pre-generation: 2s
  
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Considering the candidate 04047_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131
The candidate 04047_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131 did not pass the final checks
Discovery image 3     2026 09 06.15927    2461289.65927    7.81    10:44:37.62 +68:46:33.3   1073 3602   /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits

**** FOUND  10:44:37.51 +68:46:33.3 in the exclusion list exclusion_list.txt ****
  
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Considering the candidate 01377_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131
The candidate 01377_fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131 did not pass the final checks
Discovery image 3     2026 09 06.15927    2461289.65927    10.82    10:55:39.09 +71:52:08.0   1004 1638   /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits

**** FOUND  10:55:39.10 +71:52:07.8 in the exclusion list exclusion_list.txt ****
make_report_in_HTML.sh Phase 2 (HTML assembly): 0s
make_report_in_HTML.sh TOTAL: 2s
Prepared the HTML report for the field UMa-01-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/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
  
Last  image: 2461289.65874738 06.09.2026 03:48:25.774 UTC
WARNING: VaST exited with code 1 on the field UMa-01-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_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits to check the telescope pointing
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
It's not one of the telescopes that are know to produce images with good WCS solutions - will try to re-solve!
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
WCS_IMAGE_NAME=wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
Field of view for the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits was not set. Trying to guess...
The guess is  605 arcmin.
No image with WCS calibration found for /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits .... Determining astrometry method...
Using the local copy of Astrometry.net software...
Choosing aperture...
Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
/data_ssd/NMW-TexasTech/workdir/vast_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/lib/make_outxyls_for_astrometric_calibration found 2448 high-SNR stars for plate solving
 
This service uses tools provided by Astrometry.net.
For more information visit http://astrometry.net/ 

######### Trying to solve plate assuming 605' field of view #########
 /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.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: "out1698179.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out1698179.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).
  log-odds ratio 27.5202 (8.95094e+11), 9 match, 0 conflict, 22 distractors, 55 index.
  RA,Dec = (144.005,70.0396), pixel scale 5.93443 arcsec/pix.
  Hit/miss:   Hit/miss: +--+---+-+--+-----++----+-----+(best)---------------------------------------------------------------------
Field 1: solved with index index-4115.fits.
Field 1 solved: writing to file ./out1698179.solved to indicate this.
Field: out1698179.xyls
Field center: (RA,Dec) = (143.991171, 70.022455) deg.
Field center: (RA H:M:S, Dec D:M:S) = (09:35:57.881, +70:01:20.838).
Field size: 15.7261 x 10.552 degrees
Field rotation angle: up is 177.281 degrees E of N
Field parity: neg

Inserting WCS header...  '/data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits' -> 'fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits'
WCS keywords and Astrometry.net provenance markers have been successfully stripped from all HDUs in the file.
-rw-r--r-- 1 apache apache 117M Sep  5 23:07 fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
-rw-r--r-- 1 apache apache  12K Sep  5 23:07 out1698179.wcs
Inserting WCS header (1st iteration local)...  Opening FITS image file fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits for reading...  done!
Creating new image file (wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits)...  done!
done!
All done!
done
The WCS header appears to be added with no errors in /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits (fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits)
Keyword does not exist
Keyword has been changed to:
VAST001 = 'wcs_image_calibration.sh' / VaST script name
Keyword does not exist
Keyword has been changed to:
VAST002 = 'local   '           / ASTROMETRYNET_LOCAL_OR_REMOTE
Keyword does not exist
Keyword has been changed to:
VAST003 = 'local   '           / PLATE_SOLVE_SERVER
Keyword does not exist
Keyword has been changed to:
VAST004 = 'iteration01'        / astrometry.net run
Reading input file 1 of 1: "out1698179.xyls"...
Reading sort column "FLUX_APER"
Sorting sort column
mmapping input file
Copying table header.
Writing row 0
Done
Solving...
Reading file "./out1698179.axy"...
Only searching for solutions within 15.6517 degrees of RA,Dec (143.989,70.0216)
  log-odds ratio 23.4554 (1.53656e+10), 5 match, 0 conflict, 4 distractors, 28 index.
  RA,Dec = (143.971,70.0425), pixel scale 5.93769 arcsec/pix.
  Hit/miss:   Hit/miss: +-+---+++(best)---------+---------------------------------------------------------------------------------
Field 1: solved with index index-4116.fits.
Field 1 solved: writing to file ./out1698179.solved to indicate this.
Field: out1698179.xyls
Field center: (RA,Dec) = (143.985034, 70.023489) deg.
Field center: (RA H:M:S, Dec D:M:S) = (09:35:56.408, +70:01:24.562).
Field size: 15.713 x 10.5404 degrees
Field rotation angle: up is 177.265 degrees E of N
Field parity: neg

WCS keywords and Astrometry.net provenance markers have been successfully stripped from all HDUs in the file.
-rw-r--r-- 1 apache apache 117M Sep  5 23:07 fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
-rw-r--r-- 1 apache apache  12K Sep  5 23:07 out1698179.wcs
Inserting WCS header (2nd iteration local)...  Opening FITS image file fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits for reading...  done!
Creating new image file (wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits)...  done!
done!
All done!
The WCS header appears to be added with no errors.
Keyword does not exist
Keyword has been changed to:
VAST001 = 'wcs_image_calibration.sh' / VaST script name
Keyword does not exist
Keyword has been changed to:
VAST002 = 'local   '           / ASTROMETRYNET_LOCAL_OR_REMOTE
Keyword does not exist
Keyword has been changed to:
VAST003 = 'local   '           / PLATE_SOLVE_SERVER
Keyword does not exist
Keyword has been changed to:
VAST004 = 'iteration02'        / astrometry.net run
The field of view is large: we'll try to run Astromety.net code on the image itself rather than a star list
Reading input file "wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits"...
Found an existing WCS header, will try to verify it.
Extracting sources...
simplexy: found 9610 sources.
Solving...
Reading file "./wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.axy"...
Verifying WCS using indices with quads of size [63.485, 951.679] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
  log-odds ratio 25.6767 (1.41665e+11), 4 match, 0 conflict, 14 distractors, 17 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.95775 arcsec/pix.
 --> log-odds 19.1425
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 42.24 (2.21112e+18), 10 match, 0 conflict, 81 distractors, 28 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -+--------+-+----+-----------------------++-----+----------------+-----------------------++(best)---------
 --> log-odds 42.24
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 216.255 (8.28797e+93), 34 match, 0 conflict, 188 distractors, 55 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -++-+----++-+----+-+---+-----------+-----++-----++--+----+-+----++----------------------+++-----++--
 --> log-odds 216.255
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 411.325 (4.32749e+178), 57 match, 0 conflict, 170 distractors, 98 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -++-+----++++-+--+-++--++----------+-----++-+---++-++---++-+----++++----++---+----------+++-----++++
 --> log-odds 411.325
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 772.023 (inf), 108 match, 0 conflict, 177 distractors, 194 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -++++----++++-+--++++++++-++++---++++++-++++++--++-++---++-+-++-++++-+--++++-+--+--++---++++----++++
 --> log-odds 772.023
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 1396.22 (inf), 220 match, 0 conflict, 426 distractors, 383 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -++++----++++-++-++++++++-++++--+++++++-++++++--+++++-+-++-+-++-++++-+--++++-+--+++++--+++++----++++
 --> log-odds 1396.22
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 2393.66 (inf), 407 match, 0 conflict, 733 distractors, 736 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -++++----++++-++-+++++++++++++--+++++++-++++++--+++++-+-++++-+++++++-++-++++-++-+++++--+++++----++++
 --> log-odds 2393.66
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 4422.91 (inf), 785 match, 0 conflict, 986 distractors, 1454 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -++++----++++-++-+++++++++++++--+++++++-++++++--+++++-+-++++-+++++++--++++++-++++++++-++++++--++++++
 --> log-odds 4422.91
Verifying WCS using indices with quads of size [63.485, 951.679] arcmin
Verifying WCS with index 87 of 109 (/usr/local/astrometry/data/index-4117.fits)
Verifying WCS of field 1.
  log-odds ratio 25.6767 (1.41665e+11), 4 match, 0 conflict, 14 distractors, 17 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.95775 arcsec/pix.
 --> log-odds 19.1425
Verifying WCS with index 88 of 109 (/usr/local/astrometry/data/index-4116.fits)
Verifying WCS of field 1.
  log-odds ratio 42.24 (2.21112e+18), 10 match, 0 conflict, 81 distractors, 28 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -+--------+-+----+-----------------------++-----+----------------+-----------------------++(best)---------
 --> log-odds 42.24
Verifying WCS with index 89 of 109 (/usr/local/astrometry/data/index-4115.fits)
Verifying WCS of field 1.
  log-odds ratio 216.255 (8.28797e+93), 34 match, 0 conflict, 188 distractors, 55 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -++-+----++-+----+-+---+-----------+-----++-----++--+----+-+----++----------------------+++-----++--
 --> log-odds 216.255
Verifying WCS with index 90 of 109 (/usr/local/astrometry/data/index-4114.fits)
Verifying WCS of field 1.
  log-odds ratio 411.325 (4.32749e+178), 57 match, 0 conflict, 170 distractors, 98 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -++-+----++++-+--+-++--++----------+-----++-+---++-++---++-+----++++----++---+----------+++-----++++
 --> log-odds 411.325
Verifying WCS with index 91 of 109 (/usr/local/astrometry/data/index-4113.fits)
Verifying WCS of field 1.
  log-odds ratio 772.023 (inf), 108 match, 0 conflict, 177 distractors, 194 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -++++----++++-+--++++++++-++++---++++++-++++++--++-++---++-+-++-++++-+--++++-+--+--++---++++----++++
 --> log-odds 772.023
Verifying WCS with index 92 of 109 (/usr/local/astrometry/data/index-4112.fits)
Verifying WCS of field 1.
  log-odds ratio 1396.22 (inf), 220 match, 0 conflict, 426 distractors, 383 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -++++----++++-++-++++++++-++++--+++++++-++++++--+++++-+-++-+-++-++++-+--++++-+--+++++--+++++----++++
 --> log-odds 1396.22
Verifying WCS with index 93 of 109 (/usr/local/astrometry/data/index-4111.fits)
Verifying WCS of field 1.
  log-odds ratio 2393.66 (inf), 407 match, 0 conflict, 733 distractors, 736 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -++++----++++-++-+++++++++++++--+++++++-++++++--+++++-+-++++-+++++++-++-++++-++-+++++--+++++----++++
 --> log-odds 2393.66
Verifying WCS with index 94 of 109 (/usr/local/astrometry/data/index-4110.fits)
Verifying WCS of field 1.
  log-odds ratio 4422.91 (inf), 785 match, 0 conflict, 986 distractors, 1454 index.
  RA,Dec = (143.987,70.0244), pixel scale 5.9629 arcsec/pix.
  Hit/miss:   Hit/miss: -++++----++++-++-+++++++++++++--+++++++-++++++--+++++-+-++++-+++++++--++++++-++++++++-++++++--++++++
 --> log-odds 4422.91
Got 16 solutions.
Field: wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
Field center: (RA,Dec) = (143.988086, 70.020662) deg.
Field center: (RA H:M:S, Dec D:M:S) = (09:35:57.141, +70:01:14.384).
Field size: 15.71 x 10.5561 degrees
Field rotation angle: up is 177.271 degrees E of N
Field parity: neg
Creating new FITS file "./wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.new"...

renamed 'wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.new' -> 'wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits'
Checking if the catalog wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits.wcscat corresponding to the image wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits alredy exist and is non-empty...
Catalog wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits.wcscat corresponding to the image wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits was not found.
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
verification OK: wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
Generating wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits.wcscat from image00003.cat
Catalog wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits.wcscat corresponding to the image wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits created.
verification OK: wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
verification OK: wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
Image size: 937.2'x625.1'  15.6(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.87"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 09:35:56.587 +70:01:11.26 J2000 4789.000 3195.000 

 ### Converting SExtractor-derived pixel positions to celestial coordinates using xy2sky from WCSTools ###
 ### Converted positions of 12405 stars ###
'wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits.wcscat' -> 'vast_debug_catalog_before_xy2sky_correction.cat.log'
'/data_ssd/NMW-TexasTech/workdir/vast_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/correct_sextractor_wcs_catalog_usingxy2sky1782226.tmp' -> 'vast_debug_catalog_after_xy2sky_correction.cat.log'
The plate-solved (WCS-calibrated) image is saved to wcs_fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
###################################
# Check the image center offset between the reference and the blindly solved unmatched second-epoch image (pointing accuracy)
Reference image center 09:36:20.346 +69:59:16.26
Second-epoch image center 09:35:56.587 +70:01:11.26
Angular distance between the image centers 0.0465 deg.
###################################
The second-epoch image center is consistent with the reference image center (offset 0.0465 deg.) - the star matching failure is probably not a pointing problem
____ VaST output ____

--==VaST 1.0rc90==--

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

Checking the list of input images specified on the command line ...
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits is already a symlink and we do not allow symlinks on symlinks
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits is already a symlink and we do not allow symlinks on symlinks

Looking for the list of input images with time corrections in vast_list_of_input_images_with_time_corrections.txt ... list not found.
This is OK if you specify the input images on the command line, not through this text file.
Checking write permissions for the current directory (/data_ssd/NMW-TexasTech/workdir/vast_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw)...  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/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.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 UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits catalog from cache
SExtractor catalog cache: restored UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.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/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q211_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
The above guess is based on the non-default gain value specified in default.sex by user
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
The above guess is based on the non-default gain value specified in default.sex by user
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.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_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.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_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits > image00004.cat.sex_log 2>&1
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 5.3,5.3,4.7,5.8,6.3,6.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 5.2,5.2,4.7,5.8,6.3,6.8 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits


Done with SExtractor!

TIMING SExtractor: 12 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/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.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: 2026-02-11T07:08:01.9275104
Setting observation time using DATE-OBS keyword: 2026-02-11T07:08:01.9275104

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-02-11T07:08:01.927
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
Exposure 20 sec, 11.02.2026 07:08:01.927 UTC = JD(UTC) 2461082.79736027 mid. exp.
The reference image star  8383.293    13.567 is rejected, see bad_region.lst
The reference image star  8502.945    18.251 is rejected, see bad_region.lst
The reference image star  7815.620    16.512 is rejected, see bad_region.lst
The reference image star  8117.956    13.024 is rejected, see bad_region.lst
The reference image star  8236.773    10.919 is rejected, see bad_region.lst
The reference image star  8858.853    10.842 is rejected, see bad_region.lst
The reference image star  9505.824     7.634 is rejected, see bad_region.lst
The reference image star  8929.181     9.774 is rejected, see bad_region.lst
The reference image star  8637.306     9.453 is rejected, see bad_region.lst
The reference image star  8415.951     9.806 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: 38847, (38847 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 10
 * rejected inside rectangles defined in bad_region.lst: 12486
 * rejected close to frame edge: 162
 * rejected as being too small (<1.1 pix): 0
 * rejected as being too large (>4.6 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): 27
 * 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: -7.19
Detection limit from the magnitude-SNR relation= -7.2  (5.0 sigma detection)
The simple faintest star detection limit= -6.5
80 percent brightest stars detection limit= -7.7
Selected detection limit= -7.7
Final detection limit= -7.7 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.04.6 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'.
    39196 * detected, using  504/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.017272, number_of_ambiguous_matches=677 
refining the coordinate transformation... [CVPOLY iter 1: order=1 pairs=36302 inliers=36302 rms 0.42 -> 0.42 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.017272, number_of_ambiguous_matches=677 
36302 * matched, [CVPOLY iter 2: order=1 pairs=36302 inliers=36302 rms 0.42 -> 0.42 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.009822, number_of_ambiguous_matches=385 
36280 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=36280 inliers=36280 rms 0.31 -> 0.31 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.003801, number_of_ambiguous_matches=149 
36266 * matched (3rd iteration). Success!
  rotation [degrees] =  -0.010
    39196 stars detected, 36266 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 34309, N_manually_selected_comparison_stars = 0
Using 34309 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 34307 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00000*X_pix -0.00000*Y_pix -0.00286
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 32600 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.18
    41777 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  229200 kB used, 263016 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-09-06T03:48:25.7746750
Setting observation time using DATE-OBS keyword: 2026-09-06T03:48:25.7746750

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-06T03:48:25.774
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
The star  7797.251    20.534 is rejected, see bad_region.lst
The star  8892.479    20.301 is rejected, see bad_region.lst
The star  8894.686    18.610 is rejected, see bad_region.lst
The star  7653.158    12.467 is rejected, see bad_region.lst
The star  8795.340    14.549 is rejected, see bad_region.lst
The star  8032.685    14.501 is rejected, see bad_region.lst
The star  7681.404    14.454 is rejected, see bad_region.lst
The star  8164.699    11.479 is rejected, see bad_region.lst
The star  8421.340     9.931 is rejected, see bad_region.lst
The star  8421.907     8.212 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 10652
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 2
 * rejected inside rectangles defined in bad_region.lst: 1667
 * rejected close to frame edge: 49
 * rejected as being too small (<1.3 pix): 0
 * rejected as being too large (>5.2 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 35
 * 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'.
    10652 * detected, using  137/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000120, number_of_ambiguous_matches=5 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=9371 inliers=9371 rms 0.90 -> 0.43 pix, max corner correction 12.2 pix] fraction_of_ambiguous_matches= 0.000120, number_of_ambiguous_matches=5 
9371 * matched, [CVPOLY iter 2: order=3 pairs=9371 inliers=9371 rms 0.42 -> 0.42 pix, max corner correction 4.3 pix] fraction_of_ambiguous_matches= 0.000072, number_of_ambiguous_matches=3 
9363 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=9363 inliers=9363 rms 0.32 -> 0.32 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000048, number_of_ambiguous_matches=2 
9354 * matched (3rd iteration). Success!
  rotation [degrees] =  10.925
    10652 stars detected,  9354 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 8561, N_manually_selected_comparison_stars = 0
Using 8561 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 7525 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00009*X_pix +0.00018*Y_pix -0.56544
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 7525 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.56
 ERROR!!! Magnitude calibration failure. Dropping image. 
    41777 objects stored in memory (1000000 max.)
memory:  222332 kB used, 263016 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
Trying to guess the time system by parsing the comment string 'Time of observation (UTC)'
Time system set from the comment to DATE-OBS keyword: 'Time of observation (UTC)'
The input time system is identified as: UTC (blank if unknown)
Setting observation date using DATE-OBS keyword: 2026-09-06T03:49:11.1770212
Setting observation time using DATE-OBS keyword: 2026-09-06T03:49:11.1770212

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-09-06T03:49:11.177
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
The star  7794.282    20.079 is rejected, see bad_region.lst
The star  8889.384    19.985 is rejected, see bad_region.lst
The star  8891.420    18.858 is rejected, see bad_region.lst
The star  7650.085    11.907 is rejected, see bad_region.lst
The star  8029.609    13.797 is rejected, see bad_region.lst
The star  7678.211    13.763 is rejected, see bad_region.lst
The star  8161.906    11.461 is rejected, see bad_region.lst
The star  9522.304     6.792 is rejected, see bad_region.lst
The star  8418.787     8.598 is rejected, see bad_region.lst
The star  8253.122     7.380 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 10113
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 2
 * rejected inside rectangles defined in bad_region.lst: 1576
 * rejected close to frame edge: 50
 * rejected as being too small (<1.3 pix): 0
 * rejected as being too large (>5.3 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 56
 * 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'.
    10113 * detected, using  130/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000215, number_of_ambiguous_matches=9 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=8873 inliers=8873 rms 0.91 -> 0.36 pix, max corner correction 12.4 pix] fraction_of_ambiguous_matches= 0.000191, number_of_ambiguous_matches=8 
8871 * matched, [CVPOLY iter 2: order=1 pairs=8871 inliers=8871 rms 0.32 -> 0.32 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000096, number_of_ambiguous_matches=4 
8869 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=8869 inliers=8869 rms 0.29 -> 0.29 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000048, number_of_ambiguous_matches=2 
8863 * matched (3rd iteration). Success!
  rotation [degrees] =  10.919
    10113 stars detected,  8863 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 8106, N_manually_selected_comparison_stars = 0
Using 8106 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 7070 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00010*X_pix +0.00021*Y_pix -0.62029
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_B * Y_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 7070 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.59
 ERROR!!! Magnitude calibration failure. Dropping image. 
    41777 objects stored in memory (1000000 max.)
memory:  222332 kB used, 263016 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 3 seconds
Done with measurements! =)

Total number of measurements 78043 (78043 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 4 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  6337 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 10468 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  5384 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  4923 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  9154 stars

done!  =)
TIMING select_aperture: 16 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: 36065 objects, the longest string is 384 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 UMa-01-Q2b1x1 (less than 4 images processed)
exp_start= 11.02.2026 07:08:01.927  exp=   20.000  JD= 2461082.79736027  ap=  4.6  rotation=   0.000  *detected= 38847  *matched= 38847  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-01_20.00sec_-15.00C_LIGHT_0292.fits
exp_start= 11.02.2026 07:08:51.420  exp=   20.000  JD= 2461082.79793310  ap=  4.6  rotation=  -0.010  *detected= 39196  *matched= 36266  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/UMa-01-Q2b1x1_2026-02-11_01-08-51_20.00sec_-15.00C_LIGHT_0293.fits
exp_start= 06.09.2026 03:48:25.774  exp=   20.000  JD= 2461289.65874738  ap=  5.2  rotation=  10.925  *detected= 10652  *matched=  9354  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-48-25_20.00sec_-0.00C_LIGHT_0130.fits
exp_start= 06.09.2026 03:49:11.177  exp=   20.000  JD= 2461289.65927288  ap=  5.3  rotation=  10.919  *detected= 10113  *matched=  8863  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-09-05_CI_UMa-01-Q2b1x1_225638_TTUQ2b1x1_501596_1LMAk6hw/fd_UMa-01-Q2b1x1_2026-09-05_22-49-11_20.00sec_0.00C_LIGHT_0131.fits
########### Completed UMa-01-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)2461289.65874738 -observatory V36
11:31:39.64 +04:21:06.3 Mercury (-1.0mag)
13:33:09.79 -14:05:03.9 Venus (-4.7mag)
07:10:54.51 +23:03:07.0 Mars (1.2mag)
09:08:06.59 +17:01:30.5 Jupiter (-1.8mag)
00:51:59.56 +02:40:28.5 Saturn (0.5mag)
04:13:40.29 +21:01:56.8 Uranus (5.7mag)
00:13:51.23 -00:02:30.2 Neptune (7.7mag)
20:25:40.37 -23:39:21.1 Pluto (14.5mag)
06:35:10.13 +26:32:02.9 Moon (-9.7mag)
-rw-r--r-- 1 apache apache 362 Sep  5 23:05 planets.txt
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT)2461289.65874738:
09:08:01.88 +17:01:54.8 Io (6.2mag)
09:08:17.53 +17:00:37.5 Europa (6.3mag)
09:08:23.60 +17:00:07.1 Ganymede (5.7mag)
09:07:40.16 +17:03:39.6 Callisto (6.9mag)
09:05:50.65 +17:17:31.6 Himalia (15.7mag)
09:08:06.51 +17:01:31.7 Thebe (16.6mag)
09:05:28.52 +17:11:34.1 Elara (17.7mag)
09:12:01.78 +16:29:25.9 Pasiphae (17.9mag)
09:09:16.58 +17:18:58.5 Carme (19.0mag)
00:52:01.26 +02:40:48.5 Titan (8.3mag)
00:51:56.73 +02:40:34.3 Rhea (9.6mag)
00:52:17.71 +02:43:04.3 Iapetus (11.0mag)
00:52:10.90 +02:39:48.7 Hyperion (14.3mag)
00:50:47.53 +02:30:19.1 Phoebe (16.4mag)
-rw-r--r-- 1 apache apache 568 Sep  5 23:05 moons.txt
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT)2461289.65874738:
21:56:11.60 -00:10:12.7 JWST
14:11:12.25 +55:46:46.6 Chandra
00:14:52.45 +63:22:02.7 XMM-Newton
-rw-r--r-- 1 apache apache 96 Sep  5 23:05 spacecraft.txt
############################################################
Positions of bright comets computed with util/comet_finder/main.py for JD(UT)2461289.65874738 -observatory V36
03:39:43.86 +19:17:11.1 17.4mag P/1996 R2 (Lagerkvist)
18:02:31.57 -34:13:56.5 14.3mag P/2010 H2 (Vales)
07:18:36.22 -70:14:20.3 17.3mag C/2014 UN271 (Bernardinelli-Bernstein)
06:15:33.47 +33:40:15.2 17.7mag C/2017 K2 (PANSTARRS)
04:49:44.01 +45:18:17.7 15.7mag P/2021 N1 (ZTF)
04:49:44.01 +45:18:17.7 15.7mag P/2021 N1 (ZTF)
04:49:44.01 +45:18:17.7 15.7mag P/2021 N1 (ZTF)
04:49:44.01 +45:18:17.7 15.7mag P/2021 N1 (ZTF)
22:14:23.90 +28:48:27.5 17.4mag C/2022 E2 (ATLAS)
07:09:19.03 +26:00:00.7 16.9mag C/2022 N2 (PANSTARRS)
10:48:26.81 +27:16:02.7 17.1mag C/2022 QE78 (ATLAS)
09:47:56.66 +05:14:20.9 18.0mag C/2022 R6 (PANSTARRS)
15:29:51.47 -15:32:57.7 14.8mag C/2023 R1 (PANSTARRS)
08:37:23.17 +32:49:22.5 15.8mag C/2024 E1 (Wierzchos)
15:06:27.44 +15:20:10.7 17.9mag C/2024 G6 (ATLAS)
18:34:20.84 +43:13:00.3 13.7mag C/2024 J3 (ATLAS)
20:27:44.41 +49:21:34.3 17.4mag C/2024 R4 (PANSTARRS)
05:34:59.52 -13:00:41.8 15.1mag C/2024 T5 (ATLAS)
07:11:13.63 +18:46:12.4 17.8mag C/2025 J1 (Borisov)
11:16:09.23 +18:51:27.3 16.8mag C/2025 V2 (Rankin)
13:18:41.59 +00:12:28.1 16.8mag C/2025 Y1 (ATLAS)
16:38:28.72 +74:13:09.2 16.1mag C/2026 A2 (Bok)
03:06:19.91 +46:10:05.9 17.4mag C/2026 B2 (Sun-Gao)
12:12:13.12 +11:11:22.7 17.5mag A/2026 E1
22:25:04.47 -34:57:14.1 13.4mag 10P/Tempel
01:17:42.69 +36:47:31.9 18.0mag 11P/Tempel-Swift-LINEAR
11:47:24.60 -05:22:59.1 16.3mag 29P/Schwassmann-Wachmann
12:06:16.57 -04:44:02.7 17.6mag 63P/Wild
00:45:17.26 -06:59:48.1 15.4mag 65P/Gunn
06:37:06.96 +19:20:14.3 17.1mag 78P/Gehrels
03:17:11.25 +14:58:56.1 16.7mag 88P/Howell
05:34:27.21 +28:11:39.9 17.5mag 112P/Urata-Niijima
07:28:24.43 +25:06:12.9 17.9mag 114P/Wiseman-Skiff
10:25:20.75 +21:06:29.1 14.8mag 123P/West-Hartley
12:44:05.98 -20:56:27.2 17.4mag 124P/Mrkos
06:16:01.67 +20:40:25.0 15.9mag 128P/Shoemaker-Holt
02:36:24.44 -17:44:09.4 15.3mag 161P/Hartley-IRAS
09:39:50.99 +14:29:35.7 12.0mag 169P/NEAT
03:23:27.15 +08:33:57.1 14.5mag 220P/McNaught
04:44:59.06 +35:57:36.8 15.2mag 260P/McNaught
08:28:48.50 +35:49:11.4 17.3mag 295P/LINEAR
15:24:30.28 -00:07:15.8 17.9mag 391P/Kowalski
09:26:47.97 +16:54:31.1 17.9mag 450P/LONEOS
-rw-r--r-- 1 apache apache 2.1K Sep  5 23:05 comets.txt
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
19:45:06.20 +18:22:48.80  V488  2026-08-30.13 9.37
18:25:12.74 -22:25:28.60  V8055  2026-08-30.22 10.89
17:17:45.96 +64:31:40.10  ASASSN-26ez  2026-08-25.13 10.87
19:02:47.09 +58:08:21.00  AT2026zwo  2026-08-24.16 15.78
04:20:07.58 -42:26:59.90  AT2026zjy  2026-08-23.03 15.91
03:08:18.02 +11:54:46.50  SN2026ymb  2026-08-23.4 16.44
20:22:32.48 -50:45:14.30  SN2026yid  2026-08-22.82 15.13
04:24:28.39 -56:20:21.60  ASASSN-26ey  2026-08-20.02 15.55
16:46:37.81 -63:14:59.80  ASASSN-26ex  2026-08-18.78 3.63
21:28:47.85 +20:31:03.60  SN 2026sfn  2026-08-16.3 17.09
23:01:28.67 -61:00:39.00  SN 2026yib  2026-08-14.85 17.36
00:22:23.20 -32:16:02.70  SN 2026whu  2026-08-14.96 16.5
19:56:21.71 -37:24:19.90  ASASSN-26ew  2026-08-13.82 14.73
13:53:14.21 +00:26:52.00  SN 2026wkv  2026-08-10.12 15.83
05:21:07.61 +23:38:20.10  TCP J05210763+2338194  2026-08-10.59 9.34
01:28:20.49 +40:13:27.10  SN2026wpd  2026-08-9.34 16.37
23:47:50.89 +49:28:51.30  SN2026wjs  2026-08-9.24 17.09
16:03:20.92 +17:43:23.70  AT2026xau  2026-08-9.3 17.71
01:10:22.05 -09:34:08.50  SN2026weo  2026-08-7.46 15.76
00:56:54.35 -35:55:29.40  AT2026wdy  2026-08-5.05 16.08
22:08:07.63 -53:03:58.90  AT2026wek  2026-08-3.82 17.17
14:51:51.34 +66:13:24.60  ASASSN-26ev  2026-08-2.15 14.02
12:06:50.79 -36:16:06.20  SN2026wgm  2026-08-1.73 15.61
16:56:36.90 -59:29:26.00  ASASSN-26er  2026-07-25.82 15.09
01:21:27.83 -10:37:05.00  SN2026vbh  2026-07-25.61 15.97
21:17:31.59 +22:25:50.90  ASASSN-26eq  2026-07-24.37 15.13
18:53:36.89 +16:56:43.60  ASASSN-26ep  2026-07-23.47 -4.06
12:18:47.98 -30:48:47.50  ASASSN-26et  2026-07-22.76 13.98
13:00:47.82 +15:42:17.60  SN2026uwk  2026-07-21.75 16.38
18:52:31.11 -32:28:00.90  ASASSN-26en  2026-07-21.77 14.63
14:42:58.01 -62:32:59.10  ASASSN-26es  2026-07-20.79 15.36
20:12:45.57 -32:53:13.00  ASASSN-26em  2026-07-20.94 16.83
18:54:24.33 -46:11:51.70  ASASSN-26eu  2026-07-20.93 14.86
03:18:56.99 -80:55:10.40  AT2026ugi  2026-07-20.03 17.12
18:43:58.40 +24:22:41.80  ASASSN-26eo  2026-07-19.36 16.16
04:50:01.03 -02:22:33.80  ASASSN-26ej  2026-07-16.17 17.02
18:34:55.28 -31:41:00.90  ASASSN-26ek  2026-07-16.24 15.73
17:07:43.61 -44:21:53.50  ASASSN-26el  2026-07-15.86 16.01
14:45:08.35 +24:13:12.30  ASASSN-26ei  2026-07-16.17 16.46
10:00:46.44 -32:36:31.10  AT 2023mhb  2026-07-14.73 16.67
14:39:37.45 -11:22:36.20  AT 2026unl  2026-07-15.27 17.11
10:49:42.57 -11:25:55.80  ASASSN-26eh  2026-07-14.72 16.58
19:33:53.06 -07:15:00.80  ASASSN-22le  2026-07-14.15 15.5
02:45:40.52 -27:55:30.30  ASASSN-26ef  2026-07-12.35 15.86
23:26:43.80 +04:42:39.70  SN 2026qtn  2026-07-12.22 16.47
02:19:17.26 +28:57:15.40  ASASSN-26ec  2026-07-11.53 2.78
18:31:15.56 -05:34:31.50  AT2026stb  2026-07-11.28 -1.29
13:36:08.24 +23:29:05.00  AT2026pjf  2026-07-10.18 -0.72
17:33:39.82 +04:22:36.70  SN2026pir  2026-07-9.86 -0.66
11:21:41.26 -50:33:36.30  ASASSN-26ed  2026-07-8.8 -1.3
23:41:42.11 +26:29:49.10  AT2026qil  2026-07-9.3 16.15
20:21:30.50 -32:03:40.10  ASASSN-26ee  2026-07-7.22 15.53
19:37:44.09 -05:35:42.80  AT2026ryu  2026-07-7.17 14.88
11:06:55.46 -04:07:04.50  AT2026qqg  2026-07-5.01 16.82
19:07:23.69 -74:13:37.30  AT2026qly  2026-07-5.02 17.31
17:57:43.80 +27:18:40.10  ASASSN-26ea  2026-07-5.07 16.67
19:59:01.43 -32:07:34.30  ASASSN-26eb  2026-07-4.97 15.52
18:46:50.35 -57:44:13.20  SN 2026qqp  2026-07-5.03 -0.92
19:17:31.69 -39:55:29.90  ASASSN-26dz  2026-07-5.14 15.91
19:14:31.37 +12:03:52.90  AT 2026rdg  2026-07-3.43 11.81
04:05:50.09 -70:24:34.40  AT 2026qpr  2026-06-30.4 15.96
13:45:37.49 -05:59:35.80  SN 2026pub  2026-06-30.09 16.01
16:41:15.63 +39:17:14.70  SN 2026pel  2026-06-26.38 16.07
10:14:40.19 -35:38:21.30  ASASSN-26dy  2026-06-25.99 15.63
14:47:21.56 -40:15:51.30  ASASSN-26dv  2026-06-23.03 14.62
13:38:49.79 -77:21:06.70  ASASSN-26dw  2026-06-23.04 16.09
00:59:27.90 +33:08:13.20  SN 2026mke  2026-06-22.39 17.13
11:10:44.73 -30:20:45.50  SN 2026nmv  2026-06-22.06 16.56
21:36:15.68 -21:19:12.50  AT2026oxh  2026-06-22.15 17.14
17:31:38.38 -56:05:51.90  ASASSN-26dx  2026-06-22.02 14.72
14:10:13.44 -38:46:46.10  AT2026pvk  2026-06-22.06 16.53
20:56:47.23 -18:31:05.20  AT2026plb  2026-06-21.31 16.4
15:44:29.68 +21:00:59.30  SN2026ore  2026-06-21.29 17.57
23:50:05.98 -14:01:41.30  AT2026oxl  2026-06-21.52 17.64
17:36:54.73 -18:10:04.20  AT2026ouj  2026-06-20.92 15.15
00:34:04.08 -30:22:09.20  AT2026ntk  2026-06-18.09 17.34
20:49:13.39 +25:17:59.20  ASASSN-26du  2026-06-15.39 15.93
23:09:30.84 +32:40:42.00  SN2026oxc  2026-06-14.35 16.83
02:02:26.78 +32:04:21.30  AT2026ovz  2026-06-14.59 15.39
21:26:28.11 -72:31:19.50  AT2026nwc  2026-06-11 17.05
17:54:57.33 +26:32:34.20  SN 2026odc  2026-06-11.23 17.62
13:55:59.94 +17:30:37.20  SN 2026nyq  2026-06-11.1 16.24
00:50:45.14 -71:38:36.90  ASASSN-26dt  2026-06-11.13 10.22
14:42:19.73 +19:11:35.60  SN2026nyp  2026-06-10.3 16.32
12:23:23.92 +12:56:43.50  SN2026mta  2026-06-8.29 16.69
12:30:18.51 +47:12:33.20  SN2026oao  2026-06-9.32 17.02
10:51:05.21 -42:28:56.60  AT2026nvf  2026-06-8.12 16.75
13:50:22.48 -07:35:00.00  SN2026npn  2026-06-8.02 17.58
00:56:07.17 +43:01:43.20  ASASSN-26dq  2026-06-7.43 13.58
01:07:49.46 +41:59:43.70  SN 2026obc  2026-06-7.43 15.15
21:11:25.22 +14:14:31.90  ASASSN-26dr  2026-06-7.24 16.24
06:21:27.06 -65:16:42.00  ASASSN-26ds  2026-06-2.97 15.02
20:07:38.15 -21:07:05.40  SN2026mho  2026-05-25.18 -1.12
11:29:42.55 +79:01:03.10  AT2026min  2026-05-24.21 16.63
11:44:33.11 -68:48:32.90  ASASSN-26no  2026-05-24.03 8.35
19:00:42.82 -48:31:01.60  ASASSN-26dp  2026-05-22.31 -3.28
14:23:56.59 -58:37:47.40  ASASSN-26dn  2026-05-20.01 14.59
11:24:54.06 +47:57:01.60  AT2026nma  2026-05-20.29 15.46
21:27:08.58 +33:24:38.10  AT2026lli  2026-05-19.34 15.86
00:31:01.41 -13:38:51.70  AT2026nad  2026-05-19.39 15.34
-rw-r--r-- 1 apache apache 5.7K Sep  5 23:05 asassn_transients_list.txt
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
00:44:56.43 +41:57:41.6  PNV J00445643+4157416  2026-07-13.8026  17.98Cmag
00:42:55.36 +41:17:27.0  PNV J00425536+4117270  2026-07-20.1813  17.7mag
20:35:43.64 +61:31:32.9  TCP J20354364+6131329  2026-07-20.5443  14.4mag
21:17:31.48 +22:25:51.0  TCP J21173148+2225510  2026-07-23.5577  14.8mag
00:41:24.04 +40:49:02.8  PNV J00412404+4049028  2026-07-25.0157  18.7mag
00:43:04.26 +41:02:28.6  PNV J00430426+4102286  2026-07-26.1512  20mag
14:51:51.40 +66:13:24.0  TCP J14515140+6613240  2026-07-29.2561  13.5mag
00:43:06.15 +41:22:08.2  PNV J00430615+4122082  2026-07-30.0085  19.4mag
00:41:33.23 +41:10:12.2  PNV J00413323+4110122  2026-08-02.8913  17.1mag
05:21:07.63 +23:38:19.4  TCP J05210763+2338194  2026-08-06.4109  11.2mag
22:57:17.96 +47:07:41.8  TCP J22571796+4707418  2026-08-09.3289  14.3mag
09:13:38.17 +76:28:18.1  PSN J09133817+7628181  2026-08-09.8037  15.4mag
00:43:17.29 +41:26:48.6  PNV J00431729+4126486  2026-08-14.0920  16.8mag
00:42:52.82 +41:10:58.6  PNV J00425282+4110586  2026-08-17.7723  19.9mag
00:42:52.83 +41:10:59.6  PNV J00425283+4110596  2026-08-18.6119  19.3mag
18:25:12.76 -22:25:29.3  TCP J18251276-2225293  2026-08-19.1062  9.4mag
18:03:09.04 +12:18:14.0  TCP J18030904+1218140  2026-08-19.5199  14.9mag
19:45:06.48 +18:22:42.2  PNV J19450648+1822422  2026-08-25.1278  9.0mag
00:42:54.65 +41:22:59.3  PNV J00425465+4122593  2026-08-25.4712  18.9mag
00:42:50.38 +41:18:58.76  PNV J00425038+4118587  2026-09-04.1512  18.2mag
-rw-r--r-- 1 apache apache 190K Sep  5 23:05 tocp_transients_list.txt
############################################################
Truncated list of recent TNS transients from https://www.wis-tns.org/ :
22:48:01.050 +02:29:57.95  AT 2026ymz  2026-08-05.73 21.98
22:56:40.110 +02:46:51.37  AT 2026ymy  2026-08-04.80 21.96
01:44:34.660 +05:27:13.55  AT 2026ymx  2026-08-01.88 21.27
01:29:50.630 +00:07:42.35  AT 2026ymw  2026-07-21.86 22.34
01:20:55.160 +01:31:29.58  AT 2026ymv  2026-07-20.88 22.17
23:25:01.600 +02:19:39.37  AT 2026ymu  2026-07-20.78 22.49
22:52:58.240 +03:42:25.38  AT 2026ymt  2026-08-05.73 21.81
23:42:43.162 +19:31:30.19  AT 2026yms  2026-08-09.94 19.57
21:20:13.290 -37:42:51.98  AT 2026ymr  2026-08-09.45 19.171
17:37:51.010 -21:58:53.20  AT 2026ymq  2026-08-09.59 14.86
22:57:17.960 +47:07:41.80  AT 2026ymp  2026-08-09.33 14.3
21:11:14.725 +16:08:57.69  AT 2026ymo  2026-08-04.97 19.97
00:45:33.395 +25:23:53.86  AT 2026ymn  2026-08-10.09 19.737
16:42:12.700 +21:20:23.08  AT 2026ymm  2026-08-09.32 19.568
00:16:26.794 -31:27:04.55  AT 2026yml  2026-08-09.54 18.69
20:46:11.408 +21:33:49.40  SN 2026ymk  2026-08-10.01 19.906
16:27:21.310 +63:36:15.74  AT 2026ymj  2026-08-08.31 19.192
00:43:25.659 +22:56:56.07  SN 2026ymi  2026-08-10.10 19.196
00:25:21.922 +28:26:14.78  AT 2026ymh  2026-08-09.50 19.349
00:12:57.521 -28:42:47.48  AT 2026ymg  2026-08-09.53 18.729
-rw-r--r-- 1 apache apache 88K Sep  5 23:05 tns_transients_list.txt

=== Transient Factory Profiling ===
Started: Sat Sep  5 23:04:35 CDT 2026
=======================================
TIMING SExtractor: 4 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: 7s (0.12 min)
    WCS_CACHE_SETUP: 0s (0.00 min)
    WCS_CALIBRATION_AND_EPHEMERIS: 42s (0.70 min)
    PLATE_VERIFY_AND_POINTING: 1s (0.02 min)
    UCAC5_PLATE_SOLVING: 0s (0.00 min)
    MAGNITUDE_CALIBRATION: 17s (0.28 min)
    MAGCAL_SANITY_CHECK: 0s (0.00 min)
      FILTER_MAGNITUDE_CONSOLIDATED: 1s (0.02 min)
      FILTER_FRAME_EDGE: 0s (0.00 min)
      FILTER_SECOND_EPOCH_VERIFY: 0s (0.00 min)
    CANDIDATE_FILTERING_TOTAL: 1s (0.02 min)
    EXCLUSION_LIST_PREPARATION: 0s (0.00 min)
    SEEING_AND_LIMITING_MAG: 1s (0.02 min)
    WAIT_FOR_UCAC5: 5s (0.08 min)
    WCS_IMAGE_ARCHIVING: 1s (0.02 min)
    HTML_REPORT: 2s (0.03 min)
  SE_CONFIG_default.sex.telephoto_lens_onlybrightstars_v1: 77s (1.28 min)
TIMING SExtractor: 12 seconds
TIMING matching_and_photometry: 3 seconds
TIMING lightcurve_write: 4 seconds
TIMING select_aperture: 16 seconds
FIELD_UMa-01-Q2b1x1: 216s (3.60 min)
=======================================
TOTAL_RUNTIME: 219s (3.65 min)
Finished: Sat Sep  5 23:08:14 CDT 2026