FITS images used in this processing run:

Field Lyn-02-Q2b1x1 reference image: Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
Field Lyn-02-Q2b1x1 reference image: Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
Field Lyn-02-Q2b1x1 second-epoch image: Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
Field Lyn-02-Q2b1x1 second-epoch image: Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits

## VaST run with SExtractor config file default.sex.telephoto_lens_onlybrightstars_v1 ##
Images processed 4
Images used for photometry 4
Ref.  image: 2461093.73517407 22.02.2026 05:38:29.040   /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
First image: 2461093.73517407 22.02.2026 05:38:29.040   /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
Last  image: 2461268.92253179 16.08.2026 10:08:16.747   /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
JD time system (TT/UTC/UNKNOWN): UTC
Transient candidates found: 1
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.46
Magnitude-Size filter: Disabled
For each source choose aperture with the smallest scatter: YES
Photometric errors rescaling: NO
Number of identified bad images: 0
Number of SysRem iterations: 0
User-specified moving object: none
Computation time: 3 seconds
Number of parallel threads: 3
SExtractor parameter file: default.sex
Some important SExtractor parameters:
DETECT_MINAREA  10.0             # minimum number of pixels above threshold
DETECT_THRESH   10.0             #  or , in mag.arcsec-2
ANALYSIS_THRESH 10.0             #  or , in mag.arcsec-2
SATUR_LEVEL     55000.0         # level (in ADUs) at which arises saturation
GAIN            0.37            # detector gain in e-/ADU
VAST_SKIP_INDEX_VS_MAG is set - skipping the lib/index_vs_mag variability-index fitting
Total objects detected (at least 2 times):  7969
Objects passed selection criteria:  7947
Measurements per detected object (mean, median, min, max):    2.4    2.0    2    4
Measurements per selected object (mean, median, min, max):    2.4    2.0    2    4
Average stars detected per image: 5094.5
Average stars matched: 4682 (91.903 %)
Memory usage VmPeak:   234456 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Fri Aug 14 19:27:11 CDT 2026
VaST build number  1.0rc89-191-g1c132b07
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-08-14)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Sun Aug 16 05:25:47 CDT 2026
Host name: tau
############################################################
WARNING: VaST exited with code 1 on the field Lyn-02-Q2b1x1 after completing the measurements (memory cleanup crash); the transient search continues.
## VaST run with SExtractor config file default.sex.telephoto_lens_vSTL ##
Images processed 4
Images used for photometry 2
Ref.  image: 2461093.73517407 22.02.2026 05:38:29.040   /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
First image: 2461093.73517407 22.02.2026 05:38:29.040   /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
Last  image: 2461120.71955450 21.03.2026 05:15:59.509   /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.:  -7.15
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: 8 seconds
Number of parallel threads: 3
SExtractor parameter file: default.sex
Some important SExtractor parameters:
DETECT_MINAREA  2.0             # minimum number of pixels above threshold
DETECT_THRESH   3.0             #  or , in mag.arcsec-2
ANALYSIS_THRESH 3.0             #  or , in mag.arcsec-2
SATUR_LEVEL     57000.0         # level (in ADUs) at which arises saturation
GAIN            0.83            # detector gain in e-/ADU
WEIGHT_TYPE BACKGROUND
VAST_SKIP_INDEX_VS_MAG is set - skipping the lib/index_vs_mag variability-index fitting
Total objects detected (at least 2 times):  38686
Objects passed selection criteria:  38550
Measurements per detected object (mean, median, min, max):    2.0    2.0    2    2
Measurements per selected object (mean, median, min, max):    2.0    2.0    2    2
Average stars detected per image: 43705.5
Average stars matched: 42179 (96.5073 %)
Memory usage VmPeak:   267528 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on  Fri Aug 14 19:27:11 CDT 2026
VaST build number  1.0rc89-191-g1c132b07
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-08-14)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on  Sun Aug 16 05:26:32 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: 
Lyn-02-Q2b1x1
#######################################
########### Starting Lyn-02-Q2b1x1 ###########
Processing Lyn-02-Q2b1x1
server tau has sufficient free disk space available: 840728 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 840728 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
Small preview (one of the new images): 

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

MAKE_PNG_PLOTS=yes


renamed 'Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.png' -> 'transient_report/Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits_preview.png'

Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits


renamed 'Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.png' -> 'transient_report/Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits_preview.png'

Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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= 448.8005
INFO:         REFERENCE_EPOCH__FIRST_IMAGE_SD= 561.5627
INFO:    SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1679.4163
INFO:            SECOND_EPOCH__FIRST_IMAGE_SD= 439.5960
INFO:   SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 1673.7728
INFO:           SECOND_EPOCH__SECOND_IMAGE_SD= 447.7230
----------------------------------------------
INFO:      ref_to_second_epoch_img_mean_ratio= 3.74201
INFO:                  SECOND_EPOCH__SD_ratio= 0.018
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 =     23.0400009155273 / [degC] Focuser temperature
AMBTEMP =                 23.6 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.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= '2026-08-16T05:07:40.5516677' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-16T10:07:40.5516677' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61268.4219971183 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-16T10:07:50.4530242' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61268.4221117245 / 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      =     127.058550349686 / [deg] RA of telescope" status=0
Record 32: "DEC     =     53.9994883439439 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     15.0691666666667 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     34.2494444444444 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.79395778490757 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'West'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Lyn-02'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '08 28 14'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+54 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "FOCNAME = 'ZWO Focuser'        / Focusing equipment name" status=0
Record 50: "FOCPOS  =                20437 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20437 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     23.0400009155273 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     23.0400009155273 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 14.9 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 58.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               905.59 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 23.6 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 16.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             5.400432 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             3.600288 / [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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/d_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits :)

Spent 0.537165 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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/d_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
EXPTIME =                 20.0 / [s] Exposure duration
SET-TEMP=                  0.0 / [degC] CCD temperature setpoint
CCD-TEMP=                 -0.0 / [degC] CCD temperature
FOCTEMP =     23.0499992370605 / [degC] Focuser temperature
AMBTEMP =                 23.6 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits 
CCD-TEMP= -0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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= '2026-08-16T05:08:16.7472112' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-08-16T10:08:16.7472112' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS =     61268.4224160532 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-08-16T10:08:26.6473990' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG =     61268.4225306367 / 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      =     127.058550325171 / [deg] RA of telescope" status=0
Record 32: "DEC     =     53.9994883699246 / [deg] Declination of telescope" status=0
Record 33: "CENTALT =     15.1394444444444 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ  =     34.3052777777778 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS =     3.77726057487157 / Airmass at frame center (Gueymard 1993)" status=0
Record 36: "PIERSIDE= 'West'               / Telescope pointing state" status=0
Record 37: "SITEELEV=               1009.5 / [m] Observation site elevation" status=0
Record 38: "SITELAT =           33.7482925 / [deg] Observation site latitude" status=0
Record 39: "SITELONG=          -101.958319 / [deg] Observation site longitude" status=0
Record 40: "OBSERVER= 'Sokolovsky'         / Observer name" status=0
Record 41: "OBSERVAT= 'TTU Skyview'        / Observatory name" status=0
Record 42: "SITENAME= ''                   / Observatory site name" status=0
Record 43: "FWHEEL  = 'Simulator'          / Filter Wheel name" status=0
Record 44: "FILTER  = 'CV'                 / Active filter name" status=0
Record 45: "OBJECT  = 'Lyn-02'             / Name of the object of interest" status=0
Record 46: "OBJCTRA = '08 28 14'           / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+54 00 00'          / [D M S] Declination of imaged object" status=0
Record 48: "OBJCTROT=                  0.0 / [deg] planned rotation of imaged object" status=0
Record 49: "FOCNAME = 'ZWO Focuser'        / Focusing equipment name" status=0
Record 50: "FOCPOS  =                20437 / [step] Focuser position" status=0
Record 51: "FOCUSPOS=                20437 / [step] Focuser position" status=0
Record 52: "FOCUSSZ =                  0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP =     23.0499992370605 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM=     23.0499992370605 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT=                 14.9 / [degC] Dew point" status=0
Record 56: "HUMIDITY=                 58.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE=               905.59 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP =                 23.6 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR =                 16.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST=             5.400432 / [kph] Wind gust" status=0
Record 61: "WINDSPD =             3.600288 / [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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits 9576 6388  16 bitpix
SET-TEMP= 0.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/d_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits :)

Spent 0.528258 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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/d_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
Previews of the CALIBRATED second-epoch images:


fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits



fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
  
SExtractor catalog cache: saved Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.cat to cache
SExtractor catalog cache: saved Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.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/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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: 2461268.92211286
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_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits exists and is non-empty
wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits exists and is non-empty
wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits exists and is non-empty
wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits exists and is non-empty
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits (1st reference image)
verification OK: wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
Image size: 941.7'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: 08:28:14.476 +53:59:34.34 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_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits (1st new image)
verification OK: wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
Image size: 940.5'x624.6'  15.7(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.89"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 08:28:28.807 +53:57:38.23 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the first second-epoch image (pointing accuracy)
Reference image center 08:28:14.476 +53:59:34.34
Second-epoch image center 08:28:28.807 +53:57:38.23
Angular distance between the image centers 0.0477 deg.
Soft limit: 0.50 deg.  Hard limit: 1.00 deg.
###################################
###################################
# fov_of_wcs_calibrated_image.sh output for wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits (2nd new image)
verification OK: wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
Image size: 940.4'x624.6'  15.7(deg)x10.4(deg)  9576x6388 pix
Image scale: 5.89"/pix along the X axis and 5.87"/pix along the Y axis
Image center: 08:28:29.056 +53:57:37.24 J2000 4789.000 3195.000 
###################################
###################################
# Check the image center offset between the reference and the second second-epoch image (pointing accuracy)
Reference image center 08:28:14.476 +53:59:34.34
Second-epoch image center 08:28:29.056 +53:57:37.24
Angular distance between the image centers 0.0483 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  08:28:28.807 +53:57:38.23
Second-epoch second image center 08:28:29.056 +53:57:37.24
Angular distance between the image centers 0.00067 deg.
###################################
ERROR: no shift applied between second-epoch images! The distance between image centers is 0.00067 deg. (min. required shift: 0.00164 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/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits &> /tmp/tmp.Iq9VntBbes
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits &> /tmp/tmp.TllDARpz1f
Parallel run for /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits &> /tmp/tmp.088VuQfjkq
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
Running  util/solve_plate_with_UCAC5 --no_photometric_catalog --iterations 2  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits &> /tmp/tmp.r6Jzpnnp2C
Parallel run for /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
Calibrating the magnitude scale
Found non-empty wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.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_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits and wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.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_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits and wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.wcscat 
Found non-empty wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits and wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.wcscat
The reference image (wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits) and catalog (wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.wcscat) found
'wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.wcscat' -> 'wcsmag.cat'
Read 10801 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 112.5580 to 142.4293 deg, Dec +47.7403 to +59.3587 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 112.5580 to 142.4293 deg, Dec 47.7403 to 59.3587 deg
Loaded 7436 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): 4969 out of 5303 total matches.
Matched with Tycho-2 5303 out of 10801 detected stars.
The calibration function type and coefficients are written to calib.txt_param
util/calibrate_magnitude_scale 0.000000 1.000000 22.918300
a=0.000000 b=1.000000 c=22.918300
From vast_summary.log: estimated ref. image limiting mag.:  -7.46
Updating vast_summary.log: Estimated ref. image limiting mag.:  15.46

Updated vast_limiting_magnitude.log with calibrated magnitudes
Working...
Please, PLEASE, be patient!!!
All lightcurves processed!  =)
Estimated ref. image limiting mag.:  15.46

Lightcurve magnitude calibration plot:


Preparing per-reference-image forced-photometry calibration (method=tycho2 band=V)
Read 10801 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 112.5580 to 142.4293 deg, Dec +47.7403 to +59.3587 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 112.5580 to 142.4293 deg, Dec 47.7403 to 59.3587 deg
Loaded 7436 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): 4969 out of 5303 total matches.
Matched with Tycho-2 5303 out of 10801 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00001.cat.aperture for wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
Forced-photometry filter: calibrated wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits -> calib.txt_param_ref_wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits (aperture=6.3)
Read 10687 stars from the SExtractor catalog wcsmag.cat
Detected star coordinate range: RA 112.1642 to 141.8836 deg, Dec +48.1852 to +59.2550 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 112.1642 to 141.8836 deg, Dec 48.1852 to 59.2550 deg
Loaded 7097 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): 5064 out of 5265 total matches.
Matched with Tycho-2 5265 out of 10687 detected stars.
util/calibrate_single_image_with_tycho2.sh: calibrated wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits via Tycho-2

Single-image forced-photometry magnitude calibration plot for wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits:


Forced-photometry filter: reusing the VaST-run aperture from image00002.cat.aperture for wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
Forced-photometry filter: calibrated wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits -> calib.txt_param_ref_wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits (aperture=6.5)
____ End of magnitude calibration ____
Applying consolidated magnitude filters...
Preparing the exclusion lists for this field
Done with filtering
Found 1 candidate transients before the final filtering.  (Hard limit: 10000)
Median FWHM seeing for isolated stars:
 2.2 pix  Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
 2.4 pix  Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
 2.3 pix  fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
 2.2 pix  fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
Limiting magnitude estimates:
 15.5 mag.  Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
 15.4 mag.  Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
 13.2 mag.  fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
 13.2 mag.  fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
All-image limiting magnitude estimate:  13.2 (SNR )  10.8 (80% of stars)  with default.sex.telephoto_lens_onlybrightstars_v1
The first estimate is the magnitude of a star detected with a signal-to-noise ratio of  following Karpov (2025, Acta Polytechnica, 65, 50). 
This value should be representative of the faintest stars clearly visible in the image. 
The brighter of the limiting magnitude estimates for the two second-epoch images is reported here.
The second estimate is the 80th percentile of the magnitude distribution of stars detected on all four images.
This value is representative of the faintest object that may enter the candidate transients list.
The hard cut-off for the candidate transients is 15.5 mag.
Waiting for UCAC5 plate solver
wait
cp: cannot create regular file 'local_wcs_cache/': Not a directory
############ /tmp/tmp.Iq9VntBbes (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/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits 569.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
WARNING from replace_file_with_symlink_if_filename_contains_white_spaces() the input file /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits is already a symlink and we do not allow symlinks on symlinks
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits' -> 'wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.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/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
WCS_IMAGE_NAME=wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
WCS-calibrated image found: wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
Checking if the catalog wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.wcscat corresponding to the image wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits alredy exist and is non-empty...
Catalog wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.wcscat corresponding to the image wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
WCS catalog name: wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.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=806, bad_region=3064, passed=10801
Got 10801 stars (including 7153 good ones) from the SExtractor catalog wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.wcscat 
util/solve_plate_with_UCAC5 got 10801 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 941.7'
Seting catalog search parameters based on the expected field of view 941.7 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013079 (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 0.010463 (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 688 to 748 (Dec 47.7 to 59.4)
Done reading UCAC5 zone files...
Matched 4918 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4909 matched stars entering correct_measured_positions(), 4909 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.36" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4909 matched stars entering correct_measured_positions(), 8328 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 688 to 748 (Dec 47.7 to 59.4)
Done reading UCAC5 zone files...
Matched 4918 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4909 matched stars entering correct_measured_positions(), 8328 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.35" 
Accuracy estimation diagnostic: 4909 matched stars entering correct_measured_positions(), 8328 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.36" 
Excluding outliers - 4909 stars left (next iteration limit 5399)
Stop iterations.


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

SIP_REFIT: util/identify.sh trusts the WCS of wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits N_match=4909 sigma_overall_arcsec=0.412 sigma_q1_arcsec=0.480 sigma_q2_arcsec=0.396 sigma_q3_arcsec=0.374 sigma_q4_arcsec=0.388 n_q1=1446 n_q2=987 n_q3=1475 n_q4=1001 worst_quadrant_to_overall_ratio=1.165
The image catalog is written to wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits -region wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
############ /tmp/tmp.TllDARpz1f (6) ############
Parsing command line arguments...
The guess is based on the existing WCS header.
Trying to blindly solve the plate (local solve-field or remote server)...
/data_ssd/NMW-TexasTech/workdir/vast_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits 570.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
verification OK: /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
It's a known telescope with plate solutions that are supposed to be good.
The input image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits has a WCS header - will blindly trust it is good...
'/data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits' -> 'wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.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/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
WCS_IMAGE_NAME=wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
WCS-calibrated image found: wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
Checking if the catalog wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits.wcscat corresponding to the image wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits alredy exist and is non-empty...
Catalog wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits.wcscat corresponding to the image wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
WCS catalog name: wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.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=636, bad_region=2967, passed=10687
Got 10687 stars (including 7264 good ones) from the SExtractor catalog wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits.wcscat 
util/solve_plate_with_UCAC5 got 10687 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 937.4'
Seting catalog search parameters based on the expected field of view 937.4 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013019 (46.9 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010416 (37.5 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 690 to 748 (Dec 48.2 to 59.3)
Done reading UCAC5 zone files...
Matched 4919 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4910 matched stars entering correct_measured_positions(), 4910 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.27" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 4910 matched stars entering correct_measured_positions(), 8306 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.27" 

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 690 to 748 (Dec 48.2 to 59.3)
Done reading UCAC5 zone files...
Matched 4919 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 4910 matched stars entering correct_measured_positions(), 8306 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.28" 
Accuracy estimation diagnostic: 4910 matched stars entering correct_measured_positions(), 8306 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.29" 
Excluding outliers - 4910 stars left (next iteration limit 5401)
Stop iterations.


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

SIP_REFIT: util/identify.sh trusts the WCS of wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits (astrometrynet) - keeping it, no refit (set VAST_FORCE_SIP_REFIT=1 to refit anyway)
WCS_QUALITY_DIAG: file=Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits N_match=4910 sigma_overall_arcsec=0.295 sigma_q1_arcsec=0.263 sigma_q2_arcsec=0.322 sigma_q3_arcsec=0.331 sigma_q4_arcsec=0.279 n_q1=1512 n_q2=1041 n_q3=1387 n_q4=970 worst_quadrant_to_overall_ratio=1.123
The image catalog is written to wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits -region wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
############ /tmp/tmp.088VuQfjkq (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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
WCS_IMAGE_NAME=wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
WCS-calibrated image found: wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
Checking if the catalog wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits.wcscat corresponding to the image wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits alredy exist and is non-empty...
Catalog wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits.wcscat corresponding to the image wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
WCS catalog name: wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.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=123, bad_region=320, passed=2818
Got 2818 stars (including 2379 good ones) from the SExtractor catalog wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits.wcscat 
util/solve_plate_with_UCAC5 got 2818 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 940.5'
Seting catalog search parameters based on the expected field of view 940.5 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013063 (47.0 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010450 (37.6 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 689 to 747 (Dec 47.9 to 59.2)
Done reading UCAC5 zone files...
Matched 2323 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 2319 matched stars entering correct_measured_positions(), 2319 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.47" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 2319 matched stars entering correct_measured_positions(), 2557 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.47" 

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 689 to 747 (Dec 47.9 to 59.2)
Done reading UCAC5 zone files...
Matched 2323 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 2319 matched stars entering correct_measured_positions(), 2557 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.46" 
Accuracy estimation diagnostic: 2319 matched stars entering correct_measured_positions(), 2557 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.46" 
Excluding outliers - 2319 stars left (next iteration limit 2550)
Stop iterations.


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

SIP_REFIT: SIP order 2 trial: matched=2319 robust_rms=5.046 arcsec worst_quadrant_rms=21.075 arcsec
SIP_REFIT: SIP order 3 trial: matched=2319 robust_rms=0.616 arcsec worst_quadrant_rms=0.912 arcsec
SIP_REFIT: SIP order 5 trial: matched=2319 robust_rms=0.513 arcsec worst_quadrant_rms=0.566 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=2319 robust_rms_before=1.777 arcsec robust_rms_before_corrected=0.494 arcsec robust_rms_after=0.513 arcsec worst_quadrant_rms_before=0.507 worst_quadrant_rms_after=0.566
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.507 arcsec) - keeping the original
WCS_QUALITY_DIAG: file=fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits N_match=2319 sigma_overall_arcsec=0.507 sigma_q1_arcsec=0.493 sigma_q2_arcsec=0.562 sigma_q3_arcsec=0.504 sigma_q4_arcsec=0.541 n_q1=840 n_q2=236 n_q3=944 n_q4=299 worst_quadrant_to_overall_ratio=1.108
The image catalog is written to wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits -region wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
############ /tmp/tmp.r6Jzpnnp2C (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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/util/wcs_image_calibration.sh /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits 605.0
Entering WCS image calibration mode.
ORIGINAL_FITSFILE=/data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
FITSFILE before on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
FITSFILE after on_the_fly=/data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
verification OK: /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
WCS_IMAGE_NAME=wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
WCS-calibrated image found: wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
Checking if the catalog wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits.wcscat corresponding to the image wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits alredy exist and is non-empty...
Catalog wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits.wcscat corresponding to the image wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits found.
The catalog is in the new format, as expected.
The plate-solved (WCS-calibrated) image is saved to wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
util/solve_plate_with_UCAC5 is preparing to read a catalog corresponding to the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
WCS catalog name: wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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=147, bad_region=359, passed=2862
Got 2862 stars (including 2382 good ones) from the SExtractor catalog wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits.wcscat 
util/solve_plate_with_UCAC5 got 2862 stars from the SExtractor catalog
Updated FoV from the plate-solved image: 940.4'
Seting catalog search parameters based on the expected field of view 940.4 arcmin
UCAC5 catalog search parameters:
                    catalog_search_parameters->search_radius_deg= 0.013061 (47.0 arcsec)
                    catalog_search_parameters->brightest_mag= 1.00
                    catalog_search_parameters->faintest_mag= 13.50
                    catalog_search_parameters->search_radius_second_step_deg 0.010449 (37.6 arcsec)

ITERATION 01 -- talking to VizieR, this might be slow!
UCAC5 search strategy: trying local copy first
Found a local copy of UCAC5
UCAC5 local query limit 5000: matching up to 5000 detected stars, deepening the UCAC5 window to mag 15.50
Reading UCAC5 zone files...
Searching UCAC5 zones 689 to 747 (Dec 47.9 to 59.2)
Done reading UCAC5 zone files...
Matched 2326 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 2323 matched stars entering correct_measured_positions(), 2323 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.47" 
Removing outliers...
Correcting the measured astrometric positions...
Accuracy estimation diagnostic: 2323 matched stars entering correct_measured_positions(), 2559 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.47" 

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 689 to 747 (Dec 47.9 to 59.2)
Done reading UCAC5 zone files...
Matched 2325 stars with the local copy of UCAC5.
The local UCAC5 search seems to be a success
Accuracy estimation diagnostic: 2322 matched stars entering correct_measured_positions(), 2559 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.46" 
Accuracy estimation diagnostic: 2322 matched stars entering correct_measured_positions(), 2559 with non-zero local correction accuracy
Estimated accuracy of the plate solution: 0.46" 
Excluding outliers - 2322 stars left (next iteration limit 2555)
Stop iterations.


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

SIP_REFIT: SIP order 2 trial: matched=2322 robust_rms=4.828 arcsec worst_quadrant_rms=23.978 arcsec
SIP_REFIT: SIP order 3 trial: matched=2322 robust_rms=0.612 arcsec worst_quadrant_rms=0.905 arcsec
SIP_REFIT: SIP order 5 trial: matched=2322 robust_rms=0.505 arcsec worst_quadrant_rms=0.571 arcsec
SIP_REFIT: selected SIP order 5
SIP_REFIT: order=5 matched=2322 robust_rms_before=1.670 arcsec robust_rms_before_corrected=0.489 arcsec robust_rms_after=0.505 arcsec worst_quadrant_rms_before=0.515 worst_quadrant_rms_after=0.571
SIP_REFIT: refit does not sufficiently improve on the solution it would replace (best worst-quadrant baseline 0.515 arcsec) - keeping the original
WCS_QUALITY_DIAG: file=fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits N_match=2322 sigma_overall_arcsec=0.514 sigma_q1_arcsec=0.523 sigma_q2_arcsec=0.548 sigma_q3_arcsec=0.508 sigma_q4_arcsec=0.519 n_q1=848 n_q2=236 n_q3=944 n_q4=294 worst_quadrant_to_overall_ratio=1.066
The image catalog is written to wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits.wcscat.ucac5
The DS9 region file with the matched stars is written to wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits.wcscat.ds9.reg
You may view it with the command:
 ds9 /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits -region wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits.wcscat.ds9.reg
The astrometric residuals vector field is written to wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits.wcscat.astrometric_residuals
Option '-n' not using photometric catalogs, just stick with astrometry
opt '-i': 2 is the maximum number of iterations
Saving the final (post-refit) wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits to local_wcs_cache/
'wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits' -> 'local_wcs_cache/wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits'
Saving the final (post-refit) wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits to local_wcs_cache/
'wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits' -> 'local_wcs_cache/wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits'
Saving the final (post-refit) wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits to local_wcs_cache/
'wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits' -> 'local_wcs_cache/wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits'
Saving the final (post-refit) wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits to local_wcs_cache/
'wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits' -> 'local_wcs_cache/wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits'
###################################
# Pre-local-correction WCS quality summary (see WCS_QUALITY_DIAG lines above)
ref1=Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits sigma_overall=0.412 worst_q_ratio=1.165
ref2=Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits sigma_overall=0.295 worst_q_ratio=1.123
new1=fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits sigma_overall=0.507 worst_q_ratio=1.108
new2=fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits sigma_overall=0.514 worst_q_ratio=1.066
reference average sigma_overall=0.3535 worst_q_ratio=1.144
warn-on-ratio threshold: 2.0x reference
###################################

Astrometric residual vector field (catalog-matched stars):

plot_astrometric_residuals_xy.py: wrote wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227_astrometric_residuals.png (4909 matched stars from wcs_Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.36 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207_astrometric_residuals.png (4910 matched stars from wcs_Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.27 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490_astrometric_residuals.png (2319 matched stars from wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.45 arcsec)


plot_astrometric_residuals_xy.py: wrote wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491_astrometric_residuals.png (2322 matched stars from wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits.wcscat.astrometric_residuals, image 9576x6388, median residual 0.45 arcsec)


Copying WCS-calibrated images back to input directory
Saving fully-calibrated image wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits'
Saving fully-calibrated image wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
INFO: FPACK_FULLY_CALIBRATED_IMAGE=no (not compressing the image)
'wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits' -> '/data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/wcs_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits'
Preparing the HTML report for the field Lyn-02-Q2b1x1 with default.sex.telephoto_lens_onlybrightstars_v1
make_report_in_HTML.sh Phase 1 (network queries): 1s
Pre-generating preview images in parallel...
Done pre-generating preview images.
Pre-generating finding charts in parallel...
Done pre-generating finding charts.
make_report_in_HTML.sh Pre-generation: 0s
  
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Considering the candidate 20047_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491
The candidate 20047_fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491 did not pass the final checks
Discovery image 3     2026 08 16.42253    2461268.92253    9.67    07:55:51.25 +57:11:50.5   2191 5401   /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits

**** FOUND  07:55:51.22 +57:11:50.5 in the exclusion list exclusion_list.txt ****
make_report_in_HTML.sh Phase 2 (HTML assembly): 0s
make_report_in_HTML.sh TOTAL: 1s
Prepared the HTML report for the field Lyn-02-Q2b1x1 with default.sex.telephoto_lens_onlybrightstars_v1
*------ done with default.sex.telephoto_lens_onlybrightstars_v1 ------*
#### The local exclusion list is exclusion_list_local.txt ####
wait
*------ default.sex.telephoto_lens_vSTL ------*
'default.sex.telephoto_lens_vSTL' -> 'default.sex'
Starting VaST with default.sex.telephoto_lens_vSTL

  ./vast --noflagimage --starmatchraius 5 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
  
Last  image: 2461268.92211286 16.08.2026 10:07:40.551 UTC
WARNING: VaST exited with code 1 on the field Lyn-02-Q2b1x1 AFTER completing the measurements. This is a memory-management crash during cleanup (a VaST bug to report), NOT a wrong field / clouds / bad focus. The lightcurves were written, so the transient search continues.
____ VaST output (crashed during memory cleanup; the measurements above are complete) ____

--==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/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2)...  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/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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 Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits catalog from cache
SExtractor catalog cache: restored Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.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/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
Using the catalog image00002.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
The above guess is based on the non-default gain value specified in default.sex by user
Parent process says: we are done fork()ing.
Waiting for thread 2 to finish...
autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.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).
The gain value (GAIN=0.830) from default.sex will be used for image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2autodetect_aperture() is doing a preliminary SExtractor run to determine an appropriate aperture size
b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
The above guess is bsex -c default.sex  -PARAMETERS_NAME autodetect_aper.param -CATALOG_NAME autodetect_aper_image00003.cat  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits > image00003.cat.sex_log 2>&1ased on the non-default gain value specified in default.sex by user

autodetect_aperture() is running SExtractor on /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.8,4.8,4.4,5.3,5.8,6.3 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00003.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits > image00003.cat.sex_log 2>&1
autodetect_aperture() is doing the main SExtractor run
sex  -PARAMETERS_NAME default.param -PHOT_APERTURES 4.8,4.8,4.3,5.2,5.7,6.2 -VERBOSE_TYPE NORMAL -CATALOG_NAME image00004.cat /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits > image00004.cat.sex_log 2>&1
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
Waiting for thread 1 to finish...
autodetect_aperture() is done with image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits


Done with SExtractor!

TIMING SExtractor: 5 seconds


Matching stars between images!

No manually selected comparison stars file manually_selected_comparison_stars.lst which is fine.
Processing  /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.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: 2026-02-22T05:38:29.0401727
Setting observation time using DATE-OBS keyword: 2026-02-22T05:38:29.0401727

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-02-22T05:38:29.040
EXPTIME = 20.000

Using the catalog image00001.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
Exposure 20 sec, 22.02.2026 05:38:29.040 UTC = JD(UTC) 2461093.73517407 mid. exp.
The reference image star  8724.262    29.733 is rejected, see bad_region.lst
The reference image star  9546.641    31.549 is rejected, see bad_region.lst
The reference image star  8917.260    26.568 is rejected, see bad_region.lst
The reference image star  8809.557    21.144 is rejected, see bad_region.lst
The reference image star  8555.755    20.070 is rejected, see bad_region.lst
The reference image star  7566.558    19.356 is rejected, see bad_region.lst
The reference image star  7560.571    17.105 is rejected, see bad_region.lst
The reference image star  8607.998    16.576 is rejected, see bad_region.lst
The reference image star  8200.889    17.466 is rejected, see bad_region.lst
The reference image star  8898.541    16.802 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: 45672, (45671 good for image matching)
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 18
 * rejected inside rectangles defined in bad_region.lst: 15088
 * rejected close to frame edge: 205
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.9 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 45
 * 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: -7.15
Detection limit from the magnitude-SNR relation= -7.1  (5.0 sigma detection)
The simple faintest star detection limit= -6.5
80 percent brightest stars detection limit= -7.6
Selected detection limit= -7.6
Final detection limit= -7.6 (after subtracting MAG_TRANSIENT_ABOVE_THE_REFERENCE_FRAME_LIMIT=0.0)

Parameter box for transient search:    10.05.1 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 96
 * 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'.
    41739 * detected, using  456/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.010400, number_of_ambiguous_matches=475 
refining the coordinate transformation... [CVPOLY iter 1: order=2 pairs=38700 inliers=38700 rms 1.12 -> 0.36 pix, max corner correction 4.7 pix] fraction_of_ambiguous_matches= 0.009919, number_of_ambiguous_matches=453 
38716 * matched, [CVPOLY iter 2: order=1 pairs=38716 inliers=38716 rms 0.36 -> 0.36 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.006415, number_of_ambiguous_matches=293 
38703 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=38703 inliers=38703 rms 0.30 -> 0.30 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.002715, number_of_ambiguous_matches=124 
38686 * matched (3rd iteration). Success!
  rotation [degrees] =   3.654
    41739 stars detected, 38686 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 36147, N_manually_selected_comparison_stars = 0
Using 36147 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 36140 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = -0.00001*X_pix +0.00003*Y_pix -0.05459
Iteratively removing outliers from the mag-mag relation (weighted linear/polynomial fit)...
Computing robust linear magnitude calibration.
Used 33649 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.23
    48725 objects stored in memory (1000000 max.)
Magnitude calibration is performed successfully!
Saving observations to the cache... OK
memory:  232468 kB used, 267528 kB peak, 65263848 kB available RAM
processed 2 of 4 images ( 50.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.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: 2026-08-16T10:07:40.5516677
Setting observation time using DATE-OBS keyword: 2026-08-16T10:07:40.5516677

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-16T10:07:40.551
EXPTIME = 20.000

Using the catalog image00003.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
The star  8383.451    17.224 is rejected, see bad_region.lst
The star  7568.938    18.539 is rejected, see bad_region.lst
The star  9032.601    18.735 is rejected, see bad_region.lst
The star  8326.141     6.373 is rejected, see bad_region.lst
The star  9200.156    28.994 is rejected, see bad_region.lst
The star  7900.908    68.139 is rejected, see bad_region.lst
The star  7822.498    79.913 is rejected, see bad_region.lst
The star  8350.494    81.628 is rejected, see bad_region.lst
The star  7962.660    92.597 is rejected, see bad_region.lst
The star  8151.239   104.110 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 17547
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 2
 * rejected inside rectangles defined in bad_region.lst: 1486
 * rejected close to frame edge: 83
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.8 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 37
 * 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'.
    17547 * detected, using  192/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000739, number_of_ambiguous_matches=36 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=11149 inliers=11149 rms 2.04 -> 0.54 pix, max corner correction 19.6 pix] fraction_of_ambiguous_matches= 0.000328, number_of_ambiguous_matches=16 
11191 * matched, [CVPOLY iter 2: order=3 pairs=11191 inliers=11191 rms 0.33 -> 0.30 pix, max corner correction 4.6 pix] fraction_of_ambiguous_matches= 0.000246, number_of_ambiguous_matches=12 
11188 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=11188 inliers=11188 rms 0.24 -> 0.24 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000164, number_of_ambiguous_matches=8 
11187 * matched (3rd iteration). Success!
  rotation [degrees] = -174.062
    17547 stars detected, 11187 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 9676, N_manually_selected_comparison_stars = 0
Using 9676 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 9510 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00018*X_pix -0.00010*Y_pix -0.39347
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 9510 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.64
 ERROR!!! Magnitude calibration failure. Dropping image. 
    48725 objects stored in memory (1000000 max.)
memory:  257740 kB used, 267528 kB peak, 65263848 kB available RAM
processed 3 of 4 images ( 75.0%)



Processing  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
9576x6388 FITS image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.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: 2026-08-16T10:08:16.7472112
Setting observation time using DATE-OBS keyword: 2026-08-16T10:08:16.7472112

Observing time converted to the "standard" FITS header format:
DATE-OBS= 2026-08-16T10:08:16.747
EXPTIME = 20.000

Using the catalog image00004.cat SExtracted earlier from the image /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
The star  7771.217    18.205 is rejected, see bad_region.lst
The star  8383.872    16.990 is rejected, see bad_region.lst
The star  7568.940    18.547 is rejected, see bad_region.lst
The star  9032.583    18.659 is rejected, see bad_region.lst
The star  8326.445     6.091 is rejected, see bad_region.lst
The star  8385.191     3.207 is rejected, see bad_region.lst
The star  9200.321    28.939 is rejected, see bad_region.lst
The star  7823.300    83.412 is rejected, see bad_region.lst
The star  7900.750    68.225 is rejected, see bad_region.lst
The star  7828.956    86.055 is rejected, see bad_region.lst
Excluding more stars falling at bad regions!.. (will not print them all)
SExtractor output filtering results:
 * passed selection: 17995
 * rejected as having no flux measurement: 0
 * rejected as having SNR<3.0: 7
 * rejected inside rectangles defined in bad_region.lst: 1601
 * rejected close to frame edge: 94
 * rejected as being too small (<1.2 pix): 0
 * rejected as being too large (>4.8 pix): 0
 * rejected as outliers in mag-size plot: 0
 * rejected as having SExtractor flags > 99 and <= 7: 0
 * rejected as having hopelessly bad SExtractor flags (>7): 37
 * 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'.
    17995 * detected, using  197/ 500 * for reference/current image matching, fraction_of_ambiguous_matches= 0.000369, number_of_ambiguous_matches=18 
refining the coordinate transformation... [CVPOLY iter 1: order=3 pairs=11449 inliers=11449 rms 1.56 -> 0.44 pix, max corner correction 18.0 pix] fraction_of_ambiguous_matches= 0.000287, number_of_ambiguous_matches=14 
11455 * matched, [CVPOLY iter 2: order=3 pairs=11455 inliers=11455 rms 0.28 -> 0.27 pix, max corner correction 2.1 pix] fraction_of_ambiguous_matches= 0.000205, number_of_ambiguous_matches=10 
11454 * matched (2nd iteration). [CVPOLY iter 3: order=1 pairs=11454 inliers=11454 rms 0.25 -> 0.25 pix, max corner correction 0.0 pix] fraction_of_ambiguous_matches= 0.000185, number_of_ambiguous_matches=9 
11450 * matched (3rd iteration). Success!
  rotation [degrees] = -174.090
    17995 stars detected, 11450 stars matched
Performing magnitude calibration using automatically selected comparison stars
Expecting to find at least 40 * for magnitude calibration
We have N_good_stars = 9922, N_manually_selected_comparison_stars = 0
Using 9922 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 9739 stars for magnitude calibration.
Using the linear CCD position-dependent magnitude correction:
 delta_m = 0.00018*X_pix -0.00010*Y_pix -0.37900
ERROR in magnitude calibration: fabs(lin_mag_A * X_im_size + lin_mag_C) > MAX_LIN_CORR_MAG
Used 9739 stars for magnitude calibration (after filtering).
get_detection_limit_sn(): Detection limit: -7.63
 ERROR!!! Magnitude calibration failure. Dropping image. 
    48725 objects stored in memory (1000000 max.)
memory:  265552 kB used, 267528 kB peak, 65263848 kB available RAM
processed 4 of 4 images (100.0%)
TIMING matching_and_photometry: 1 seconds
Done with measurements! =)

Total number of measurements 87411 (87411 measurements stored in RAM)
Freeing up some memory...  Sorting the measurements cached in memory...
Writing lightcurve (outNNNNN.dat) files...
TIMING lightcurve_write: 1 seconds
The lightcurve files have been written, freeing up more memory...
Creating vast_image_details.log ... 

Writing summary file: vast_summary.log ...  OK
Selecting the best aperture for each source
Aperture with index 0 (REFERENCE_APERTURE_DIAMETER +0.00*REFERENCE_APERTURE_DIAMETER) seems best for  6436 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 13750 stars
Aperture with index 3 (REFERENCE_APERTURE_DIAMETER +0.10*REFERENCE_APERTURE_DIAMETER) seems best for  4974 stars
Aperture with index 4 (REFERENCE_APERTURE_DIAMETER +0.20*REFERENCE_APERTURE_DIAMETER) seems best for  4634 stars
Aperture with index 5 (REFERENCE_APERTURE_DIAMETER +0.30*REFERENCE_APERTURE_DIAMETER) seems best for  8892 stars

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

Computing, please wait a bit
.................................................................................................................................................................................................................................................................................................................................................................................................
vast_lightcurve_statistics.log: 38550 objects, the longest string is 385 bytes.
Allocating memory for resorting the file.



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



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

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

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

Low percentage of matched images - we'll declare this an unsuccessful VaST run (exit code 1)
_____________________
SExtractor catalog cache: saved Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits.cat to cache
SExtractor catalog cache: saved Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_vSTL
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
Last  image: 2461268.92211286 16.08.2026 10:07:40.551 UTC
ERROR running VaST on the field Lyn-02-Q2b1x1 (less than 4 images processed)
exp_start= 22.02.2026 05:38:29.040  exp=   20.000  JD= 2461093.73517407  ap=  4.9  rotation=   0.000  *detected= 45672  *matched= 45672  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-02-21_23-38-29_20.00sec_-14.90C_LIGHT_0227.fits
exp_start= 21.03.2026 05:15:59.509  exp=   20.000  JD= 2461120.71955450  ap=  5.1  rotation=   3.654  *detected= 41739  *matched= 38686  status=OK     /data_ssd/NMW-TexasTech/reference_imgs/Lyn-02-Q2b1x1_2026-03-21_00-15-59_20.00sec_-14.90C_LIGHT_0207.fits
exp_start= 16.08.2026 10:07:40.551  exp=   20.000  JD= 2461268.92211286  ap=  4.8  rotation= -174.062  *detected= 17547  *matched= 11187  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-07-40_20.00sec_-0.00C_LIGHT_0490.fits
exp_start= 16.08.2026 10:08:16.747  exp=   20.000  JD= 2461268.92253179  ap=  4.8  rotation= -174.090  *detected= 17995  *matched= 11450  status=ERROR  /data_ssd/NMW-TexasTech/workdir//img_2026-08-16_CI_Lyn-02-Q2b1x1_052241_TTUQ2b1x1_2434513_clO4Ilh2/fd_Lyn-02-Q2b1x1_2026-08-16_05-08-16_20.00sec_-0.00C_LIGHT_0491.fits
########### Completed Lyn-02-Q2b1x1 ###########
The analysis was running at tau
We are allowed to update the exclusion list at tau host
Found ../exclusion_list_TTUQ2.txt
#### The exclusion list before filtering-out asteroids, bad pixels and adding Gaia sources ####
###################################################################################
renamed 'exclusion_list_index_html.txt_noasteroids' -> 'exclusion_list_index_html.txt'
renamed 'exclusion_list_index_html.txt_nohotpixels' -> 'exclusion_list_index_html.txt'
# Count candidates with no identification (that also don't look like hot pix)
Found 0 unidentified candidates (excluding asteroids, hot pixels and known variable stars).
###################################################################################
0 candidates found (excluding asteroids and hot pixels)
This does not look like a test run
###################################################################################
exclusion_list_gaiadr2.txt NOT FOUND
exclusion_list_apass.txt NOT FOUND
IS_THIS_TEST_RUN=NO  ALLOW_EXCLUSION_LIST_UPDATE= YES
#### Nothing to add to the exclusion list ####
The observatory MPC code is V36
############################################################
Positions of planets computed with util/planet_finder/main.py for JD(UT)2461268.92211286 -observatory V36
08:57:35.42 +18:26:22.3 Mercury (-1.4mag)
12:30:54.78 -05:00:11.0 Venus (-4.4mag)
06:12:58.19 +23:42:29.9 Mars (1.3mag)
08:50:16.63 +18:13:31.0 Jupiter (-1.8mag)
00:55:38.07 +03:08:11.3 Saturn (0.6mag)
04:12:34.22 +20:59:07.3 Uranus (5.7mag)
00:15:34.48 +00:09:22.5 Neptune (7.7mag)
20:27:22.34 -23:33:12.3 Pluto (14.5mag)
12:33:33.80 -07:46:36.0 Moon (-9.3mag)
-rw-r--r-- 1 apache apache 362 Aug 16 05:25 planets.txt
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT)2461268.92211286:
08:50:21.29 +18:13:11.6 Io (6.1mag)
08:50:21.35 +18:13:10.3 Europa (6.3mag)
08:50:29.55 +18:12:31.4 Ganymede (5.6mag)
08:50:16.38 +18:13:30.0 Callisto (6.8mag)
08:47:44.87 +18:17:55.4 Himalia (15.7mag)
08:50:15.02 +18:13:38.6 Thebe (16.6mag)
08:47:21.72 +18:14:51.6 Elara (17.7mag)
08:54:25.36 +17:49:16.1 Pasiphae (17.9mag)
08:52:54.34 +18:25:39.4 Carme (19.0mag)
00:55:48.65 +03:07:44.8 Titan (8.4mag)
00:55:35.80 +03:07:54.7 Rhea (9.7mag)
00:56:06.86 +03:08:41.4 Iapetus (11.1mag)
00:55:51.01 +03:07:36.3 Hyperion (14.4mag)
00:54:50.10 +03:00:19.5 Phoebe (16.4mag)
-rw-r--r-- 1 apache apache 568 Aug 16 05:25 moons.txt
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT)2461268.92211286:
19:39:01.47 -18:17:27.0 JWST
16:17:54.21 +46:46:28.2 Chandra
11:41:10.81 -61:02:48.4 XMM-Newton
-rw-r--r-- 1 apache apache 96 Aug 16 05:25 spacecraft.txt
############################################################
Positions of bright comets computed with util/comet_finder/main.py for JD(UT)2461268.92211286 -observatory V36
03:22:31.21 +18:01:33.4 17.6mag P/1996 R2 (Lagerkvist)
18:00:09.91 -34:33:12.9 14.1mag P/2010 H2 (Vales)
07:01:17.11 -69:13:35.5 17.3mag C/2014 UN271 (Bernardinelli-Bernstein)
06:11:51.57 +33:10:18.2 17.7mag C/2017 K2 (PANSTARRS)
04:06:33.27 +40:44:38.4 17.2mag P/2021 N1 (ZTF)
22:31:46.37 +30:52:56.3 17.3mag C/2022 E2 (ATLAS)
06:51:27.00 +26:23:41.6 16.8mag C/2022 N2 (PANSTARRS)
10:29:10.91 +28:06:21.8 17.0mag C/2022 QE78 (ATLAS)
09:34:21.33 +05:18:33.1 17.9mag C/2022 R6 (PANSTARRS)
15:14:06.67 -12:37:08.2 17.9mag P/2023 B1 (PANSTARRS)
21:00:16.92 +64:58:49.0 17.9mag C/2023 H5 (Lemmon)
15:40:34.40 -13:41:40.2 14.5mag C/2023 R1 (PANSTARRS)
08:17:04.97 +31:43:26.5 15.4mag C/2024 E1 (Wierzchos)
15:05:58.61 +15:33:34.9 17.8mag C/2024 G6 (ATLAS)
18:53:15.19 +43:24:56.6 13.7mag C/2024 J3 (ATLAS)
20:58:25.28 +49:35:04.9 17.5mag C/2024 R4 (PANSTARRS)
05:21:29.71 -12:54:15.8 15.4mag C/2024 T5 (ATLAS)
07:01:18.94 +22:41:40.0 17.9mag C/2025 J1 (Borisov)
10:44:32.05 +20:22:11.2 17.2mag C/2025 V2 (Rankin)
13:03:18.54 +01:47:11.7 16.9mag C/2025 Y1 (ATLAS)
16:04:52.98 +76:59:13.1 16.6mag C/2026 A2 (Bok)
03:09:35.93 +46:18:52.0 17.2mag C/2026 B2 (Sun-Gao)
11:53:41.33 +09:22:41.0 17.4mag A/2026 E1
22:06:50.62 -30:27:26.0 7.0mag 10P/Tempel
11:33:58.23 -03:55:15.6 16.3mag 29P/Schwassmann-Wachmann
11:24:22.95 +01:57:29.4 17.3mag 63P/Wild
00:53:09.45 -05:47:47.8 15.4mag 65P/Gunn
05:53:54.40 +20:29:16.5 13.7mag 78P/Gehrels
20:30:39.78 -24:25:35.9 17.6mag 84P/Giclas
03:07:58.59 +14:14:02.3 16.8mag 88P/Howell
08:16:22.76 +26:29:43.8 16.3mag 93P/Lovas
04:29:50.69 +20:04:33.7 17.4mag 112P/Urata-Niijima
06:23:25.52 +29:16:28.3 16.2mag 114P/Wiseman-Skiff
09:37:50.40 +25:12:27.1 14.9mag 123P/West-Hartley
12:00:16.53 -13:23:23.6 17.2mag 124P/Mrkos
05:48:27.74 +21:07:03.3 16.0mag 128P/Shoemaker-Holt
06:42:19.48 +18:27:56.7 17.9mag 131P/Mueller
00:01:34.15 +03:16:23.0 17.5mag 139P/Vaisala-Oterma
03:15:43.90 -18:51:12.9 13.3mag 161P/Hartley-IRAS
07:44:05.91 +38:05:31.4 16.0mag 162P/Siding Spring
12:28:46.71 +38:01:38.3 12.0mag 169P/NEAT
02:57:10.46 +09:31:44.3 17.6mag 220P/McNaught
16:46:27.24 -10:41:45.1 17.9mag 235P/LINEAR
20:17:56.91 -52:26:08.5 17.9mag 259P/Garradd
03:46:03.06 +28:32:18.1 15.3mag 260P/McNaught
07:29:55.42 +37:25:47.4 17.3mag 295P/LINEAR
15:13:30.12 +02:13:31.9 17.8mag 391P/Kowalski
09:08:21.38 +17:58:08.1 17.9mag 450P/LONEOS
-rw-r--r-- 1 apache apache 2.3K Aug 16 05:25 comets.txt
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
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
02:02:26.67 +32:04:22.70  AT2026ovz  2026-06-14.6 15.52
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
15:16:06.61 -79:16:32.40  ASASSN-26dm  2026-05-19.03 14.44
11:24:25.21 -59:23:19.10  ASASSN-26dl  2026-05-18.02 13.55
13:45:51.52 -53:16:01.00  ASASSN-26dk  2026-05-18.16 12.96
02:05:49.69 -30:29:09.60  ASASSN-26dh  2026-05-18.43 15.37
17:50:22.87 -39:42:33.90  ASASSN-26dj  2026-05-17.05 15.7
01:13:11.60 -33:25:16.10  ASASSN-26dg  2026-05-13.41 16.8
16:44:31.77 -27:15:18.40  AT2026mhn  2026-05-12.33 15.8
09:46:31.08 -33:41:51.00  ASASSN-26di  2026-05-12.14 14.63
21:23:11.57 -19:09:45.00  AT2026kwu  2026-05-12.26 16.9
14:20:14.30 -30:20:51.90  AT2026ktm  2026-05-12.06 17.21
14:41:39.01 -37:13:46.40  AT2026lkm  2026-05-11.18 16.89
12:59:50.45 -10:58:38.80  SN2026kep  2026-05-9.06 17.5
13:37:29.61 -29:50:30.90  AT2026lkd  2026-05-9.09 17.23
09:46:42.01 -14:52:03.60  SN2026kmo  2026-05-8.99 17.51
15:03:05.28 +22:02:03.40  AT2026lxf  2026-05-8.07 13.88
10:23:49.41 -20:57:25.30  ASASSN-26df  2026-05-8.21 16.52
22:14:40.56 +05:04:51.60  2026lda  2026-05-7.56 16.2
21:35:33.81 -14:05:16.30  ASASSN-26de  2026-05-6.29 14.51
16:21:49.13 -61:36:14.60  ASASSN-26dd  2026-05-5.15 15.93
-rw-r--r-- 1 apache apache 5.7K Aug 16 05:25 asassn_transients_list.txt
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
00:42:38.68 +41:15:58.2  PNV J00423868+4115582  2026-06-05.1224  19.97Umag
19:00:42.95 -48:31:01.7  PNV J19004295-4831017  2026-05-25.0752  14.2mag
09:55:21.28 +69:02:52.6  PNV J09552128+6902526  2026-06-13.933  18.9mag
19:51:21.42 +37:06:40.0  TCP J19512142+3706400  2026-06-17.2942  16.8mag
19:57:03.87 +37:41:46.4  TCP J19570387+3741464  2026-06-18.2638  17.5mag
00:42:32.04 +41:10:28.3  PNV J00423204+4110283  2026-06-26.059  16.6mag
02:19:17.36 +28:57:15.8  TCP J02191736+2857158  2026-07-12.3549  12.5mag
00:44:56.43 +41:57:41.6  PNV J00445643+4157416  2026-07-13.8026  17.98Cmag
00:42:55.36 +41:17:27.0  PNV J00425536+4117270  2026-07-20.1813  17.7mag
20:35:43.64 +61:31:32.9  TCP J20354364+6131329  2026-07-20.5443  14.4mag
21:17:31.48 +22:25:51.0  TCP J21173148+2225510  2026-07-23.5577  14.8mag
00:41:24.04 +40:49:02.8  PNV J00412404+4049028  2026-07-25.0157  18.7mag
00:43:04.26 +41:02:28.6  PNV J00430426+4102286  2026-07-26.1512  20mag
14:51:51.40 +66:13:24.0  TCP J14515140+6613240  2026-07-29.2561  13.5mag
00:43:06.15 +41:22:08.2  PNV J00430615+4122082  2026-07-30.0085  19.4mag
00:41:33.23 +41:10:12.2  PNV J00413323+4110122  2026-08-02.8913  17.1mag
05:21:07.63 +23:38:19.4  TCP J05210763+2338194  2026-08-06.4109  11.2mag
22:57:17.96 +47:07:41.8  TCP J22571796+4707418  2026-08-09.3289  14.3mag
09:13:38.17 +76:28:18.1  PSN J09133817+7628181  2026-08-09.8037  15.4mag
00:43:17.29 +41:26:48.6  PNV J00431729+4126486  2026-08-14.0920  16.8mag
-rw-r--r-- 1 apache apache 190K Aug 16 05:25 tocp_transients_list.txt
############################################################
Truncated list of recent TNS transients from https://www.wis-tns.org/ :
23:37:50.618 -01:46:17.45  AT 2026wuz  2026-07-25.58 20.15
00:30:26.145 +29:31:04.56  AT 2026wuy  2026-07-23.54 21.23
23:43:45.878 +27:53:57.40  AT 2026wux  2026-07-27.51 20.99
17:05:21.182 +29:02:19.42  AT 2026wuw  2026-03-09.61 21.2
16:00:25.159 +52:39:29.32  AT 2026wuv  2026-05-24.44 21
15:12:38.490 +17:08:40.32  AT 2026wuu  2026-07-06.38 20.78
20:34:48.010 -30:46:06.82  AT 2026wut  2026-07-08.49 20.87
13:24:16.058 -23:32:48.97  AT 2026wus  2026-05-21.31 20.5
15:52:09.810 +21:23:36.58  AT 2026wur  2026-05-19.33 21.14
17:21:27.821 +31:45:59.75  AT 2026wuq  2026-07-24.44 20.99
16:06:39.962 -00:03:48.96  AT 2026wup  2026-07-08.37 20.6
23:36:31.132 -01:42:30.56  AT 2026wuo  2026-07-25.58 21.53
14:58:54.953 +20:56:59.36  AT 2026wun  2026-06-12.38 21.33
13:29:54.424 -08:02:17.84  AT 2026wum  2026-05-12.34 21.76
15:31:56.171 -23:07:56.50  AT 2026wul  2026-07-16.29 21.12
15:50:35.869 +16:13:29.04  AT 2026wuk  2026-06-08.46 20.66
14:46:52.387 +23:41:33.95  AT 2026wuj  2026-07-19.29 20.84
02:33:14.312 +23:53:11.23  AT 2026wui  2026-07-25.60 21.47
23:59:19.033 +30:37:28.65  AT 2026wuh  2026-07-23.54 21.33
16:12:22.633 +29:40:38.32  AT 2026wug  2026-05-17.56 21.06
-rw-r--r-- 1 apache apache 87K Aug 16 05:25 tns_transients_list.txt

=== Transient Factory Profiling ===
Started: Sun Aug 16 05:25:27 CDT 2026
=======================================
TIMING SExtractor: 2 seconds
TIMING matching_and_photometry: 0 seconds
TIMING lightcurve_write: 1 seconds
TIMING select_aperture: 0 seconds
    VAST_RUN_default.sex.telephoto_lens_onlybrightstars_v1: 4s (0.07 min)
    WCS_CACHE_SETUP: 0s (0.00 min)
    WCS_CALIBRATION_AND_EPHEMERIS: 26s (0.43 min)
    PLATE_VERIFY_AND_POINTING: 0s (0.00 min)
    UCAC5_PLATE_SOLVING: 0s (0.00 min)
    MAGNITUDE_CALIBRATION: 7s (0.12 min)
    MAGCAL_SANITY_CHECK: 0s (0.00 min)
      FILTER_MAGNITUDE_CONSOLIDATED: 0s (0.00 min)
      FILTER_FRAME_EDGE: 0s (0.00 min)
      FILTER_SECOND_EPOCH_VERIFY: 0s (0.00 min)
    CANDIDATE_FILTERING_TOTAL: 0s (0.00 min)
    EXCLUSION_LIST_PREPARATION: 0s (0.00 min)
    SEEING_AND_LIMITING_MAG: 0s (0.00 min)
    WAIT_FOR_UCAC5: 2s (0.03 min)
    WCS_IMAGE_ARCHIVING: 0s (0.00 min)
    HTML_REPORT: 1s (0.02 min)
  SE_CONFIG_default.sex.telephoto_lens_onlybrightstars_v1: 40s (0.67 min)
TIMING SExtractor: 5 seconds
TIMING matching_and_photometry: 1 seconds
TIMING lightcurve_write: 1 seconds
TIMING select_aperture: 1 seconds
    VAST_RUN_default.sex.telephoto_lens_vSTL: 9s (0.15 min)
FIELD_Lyn-02-Q2b1x1: 62s (1.03 min)
=======================================
TOTAL_RUNTIME: 65s (1.08 min)
Finished: Sun Aug 16 05:26:32 CDT 2026