## VaST run with SExtractor config file default.sex.telephoto_lens_onlybrightstars_v1 ##
Images processed 4
Images used for photometry 3
Ref. image: 2461036.55649360 27.12.2025 01:21:11.047 /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits
First image: 2461036.55649360 27.12.2025 01:21:11.047 /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits
Last image: 2461144.89584774 14.04.2026 09:29:51.245 /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.: -8.07
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: 4 seconds
Number of parallel threads: 24
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
Total objects detected (at least 2 times): 22339
Objects passed selection criteria: 22119
Measurements per detected object (mean, median, min, max): 2.0 2.0 2 3
Measurements per selected object (mean, median, min, max): 2.0 2.0 2 3
Average stars detected per image: 16542.3
Average stars matched: 15818.3 (95.6234 %)
Memory usage VmPeak: 128552 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on Sun Apr 12 15:05:06 CDT 2026
VaST build number 1.0rc89-12-g393f88de
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-04-12)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on Tue Apr 14 04:37:12 CDT 2026
Host name: tau
***** IMAGE PROCESSING ERROR (less than 4 images processed) *****
############################################################
## VaST run with SExtractor config file default.sex.telephoto_lens_vSTL ##
Images processed 4
Images used for photometry 3
Ref. image: 2461036.55649360 27.12.2025 01:21:11.047 /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits
First image: 2461036.55649360 27.12.2025 01:21:11.047 /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits
Last image: 2461144.89584774 14.04.2026 09:29:51.245 /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits
JD time system (TT/UTC/UNKNOWN): UTC
FILTER key from ref. img. header: CV
Magnitude scale: instrumental
Estimated ref. image limiting mag.: -7.71
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: 17 seconds
Number of parallel threads: 24
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
Total objects detected (at least 2 times): 169230
Objects passed selection criteria: 168559
Measurements per detected object (mean, median, min, max): 2.1 2.0 2 3
Measurements per selected object (mean, median, min, max): 2.1 2.0 2 3
Average stars detected per image: 129751
Average stars matched: 122345 (94.2924 %)
Memory usage VmPeak: 2007140 kB
Software: VaST 1.0rc90 compiled with gcc (Gentoo 15.2.1_p20260214 p5) 15.2.1 20260214
VaST compiled on Sun Apr 12 15:05:06 CDT 2026
VaST build number 1.0rc89-12-g393f88de
OpenMP enabled: Yes
SExtractor version 2.19.5 (2026-04-12)
GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)
Processing completed on Tue Apr 14 04:40:05 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= /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= 15.0
FLAT_FIELD_FILE= /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-03-20.fit
FRAME_EDGE_OFFSET_PIX= 600
GAIA_BAND_FOR_CATALOGED_SOURCE_CHECK=
MAX_NEW_TO_REF_MEAN_IMG_VALUE_RATIO= 100
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= 3000
NUMBER_OF_DETECTED_TRANSIENTS_BEFORE_FILTERING_SOFT_LIMIT= 2000
OMP_NUM_THREADS=
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= 4
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:
Cyg-04-Q2b1x1
#######################################
########### Starting Cyg-04-Q2b1x1 ###########
Processing Cyg-04-Q2b1x1
server tau has sufficient free disk space available: 763982 MB at /data_ssd/NMW-TexasTech/workdir
server tau has sufficient free disk space available: 763982 MB at .
Checking input images (2 new)
REFERENCE_EPOCH__FIRST_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits
REFERENCE_EPOCH__SECOND_IMAGE= /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-50_20.00sec_-15.00C_LIGHT_0023.fits
Small preview (one of the new images): 
Large previews of the second-epoch (new) images:
MAKE_PNG_PLOTS=yes
renamed 'Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.png' -> 'transient_report/Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits_preview.png'
Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits
renamed 'Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.png' -> 'transient_report/Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits_preview.png'
Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.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= 915.1348
INFO: REFERENCE_EPOCH__FIRST_IMAGE_SD= 923.0988
INFO: SECOND_EPOCH__FIRST_IMAGE_MEAN_VALUE= 1850.9188
INFO: SECOND_EPOCH__FIRST_IMAGE_SD= 392.1043
INFO: SECOND_EPOCH__SECOND_IMAGE_MEAN_VALUE= 2080.1482
INFO: SECOND_EPOCH__SECOND_IMAGE_SD= 432.8558
----------------------------------------------
INFO: ref_to_second_epoch_img_mean_ratio= 2.02256
INFO: SECOND_EPOCH__SD_ratio= 0.094
----------------------------------------------
Calibration settings: DARK_FRAMES_DIR=/var/www/nmw_calibration/TTUQ2b1x1/darks FLAT_FIELD_FILE=/var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-03-20.fit
EXPTIME = 20.0 / [s] Exposure duration
SET-TEMP= -5.0 / [degC] CCD temperature setpoint
CCD-TEMP= -5.0 / [degC] CCD temperature
FOCTEMP = 17.1299991607666 / [degC] Focuser temperature
AMBTEMP = 17.7 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits
CCD-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits
SET-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.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= '2026-04-14T04:29:51.2450106' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-04-14T09:29:51.2450106' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS = 61144.3957320023 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-04-14T09:30:01.1456902' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG = 61144.3958465857 / 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= -5.0 / [degC] CCD temperature setpoint" status=0
Record 25: "CCD-TEMP= -5.0 / [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 = 323.99854588969 / [deg] RA of telescope" status=0
Record 32: "DEC = 46.0001898983434 / [deg] Declination of telescope" status=0
Record 33: "CENTALT = 29.325 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ = 51.7680555555556 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS = 2.035608904959 / 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 = 'Cyg-04' / Name of the object of interest" status=0
Record 46: "OBJCTRA = '21 36 00' / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+46 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 = 20281 / [step] Focuser position" status=0
Record 51: "FOCUSPOS= 20281 / [step] Focuser position" status=0
Record 52: "FOCUSSZ = 0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP = 17.1299991607666 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM= 17.1299991607666 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT= 13.4 / [degC] Dew point" status=0
Record 56: "HUMIDITY= 76.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE= 898.1 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP = 17.7 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR = 69.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST= 14.801184 / [kph] Wind gust" status=0
Record 61: "WINDSPD = 10.400832 / [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_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits 9576 6388 16 bitpix
SET-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits
SET-TEMP= -5.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-04-02.fit
CCD-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits
CCD-TEMP= -5.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-04-02.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-04-02.fit 9576 6388 16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/d_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits :)
Spent 0.475023 seconds
renamed 'mdark_TTUQ2b1x1_-5C_20s_2026-04-02.png' -> 'transient_report/dark.png'
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/d_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits 9576 6388 16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-03-20.fit 9576 6388 16 bitpix
Avarage count on flat field image: 37165.080609
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits :)
No overscan detected - all values seem high! (left_median=23810.0, right_median=27365.5)
renamed 'mff_TTUQ2b1x1_2026-03-20.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__FIRST_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits
EXPTIME = 20.0 / [s] Exposure duration
SET-TEMP= -5.0 / [degC] CCD temperature setpoint
CCD-TEMP= -4.9 / [degC] CCD temperature
FOCTEMP = 16.7600002288818 / [degC] Focuser temperature
AMBTEMP = 17.4 / [degC] Ambient air temperature
Exploring image header: /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits
CCD-TEMP= -4.900000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits
SET-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.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= '2026-04-14T04:34:20.5010921' / Time of observation (local)" status=0
Record 12: "DATE-OBS= '2026-04-14T09:34:20.5010921' / Time of observation (UTC)" status=0
Record 13: "MJD-OBS = 61144.3988483911 / Modified Julian Date of observation" status=0
Record 14: "DATE-AVG= '2026-04-14T09:34:30.4052736' / Averaged midpoint time (UTC)" status=0
Record 15: "MJD-AVG = 61144.3989630206 / 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= -5.0 / [degC] CCD temperature setpoint" status=0
Record 25: "CCD-TEMP= -4.9 / [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 = 323.99854551744 / [deg] RA of telescope" status=0
Record 32: "DEC = 46.0001899791082 / [deg] Declination of telescope" status=0
Record 33: "CENTALT = 30.0647222222222 / [deg] Altitude of telescope" status=0
Record 34: "CENTAZ = 52.0652777777778 / [deg] Azimuth of telescope" status=0
Record 35: "AIRMASS = 1.9903982698029 / 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 = 'Cyg-04' / Name of the object of interest" status=0
Record 46: "OBJCTRA = '21 36 00' / [H M S] RA of imaged object" status=0
Record 47: "OBJCTDEC= '+46 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 = 20342 / [step] Focuser position" status=0
Record 51: "FOCUSPOS= 20342 / [step] Focuser position" status=0
Record 52: "FOCUSSZ = 0.0 / [um] Focuser step size" status=0
Record 53: "FOCTEMP = 16.7600002288818 / [degC] Focuser temperature" status=0
Record 54: "FOCUSTEM= 16.7600002288818 / [degC] Focuser temperature" status=0
Record 55: "DEWPOINT= 13.3 / [degC] Dew point" status=0
Record 56: "HUMIDITY= 77.0 / [percent] Relative humidity" status=0
Record 57: "PRESSURE= 898.1 / [hPa] Air pressure" status=0
Record 58: "AMBTEMP = 17.4 / [degC] Ambient air temperature" status=0
Record 59: "WINDDIR = 88.0 / [deg] Wind direction: 0=N, 180=S, 90=E, 270=W" status=0
Record 60: "WINDGUST= 9.400752 / [kph] Wind gust" status=0
Record 61: "WINDSPD = 6.800544 / [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_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits 9576 6388 16 bitpix
SET-TEMP= -5.000000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits
SET-TEMP= -5.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-04-02.fit
CCD-TEMP= -4.900000 for /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits
CCD-TEMP= -5.000000 for /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-04-02.fit
Reading dark frame /var/www/nmw_calibration/TTUQ2b1x1/darks/mdark_TTUQ2b1x1_-5C_20s_2026-04-02.fit 9576 6388 16 bitpix
Dark frame is subtracted, output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/d_Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits :)
Spent 0.482284 seconds
renamed 'mdark_TTUQ2b1x1_-5C_20s_2026-04-02.png' -> 'transient_report/dark.png'
MegaDivider v7
Reading image /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/d_Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits 9576 6388 16 bitpix
Reading flat /var/www/nmw_calibration/TTUQ2b1x1/flats/mff_TTUQ2b1x1_2026-03-20.fit 9576 6388 16 bitpix
Avarage count on flat field image: 37165.080609
Minimal real count (from overscan): 5
Output is written to /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits :)
No overscan detected - all values seem high! (left_median=23810.0, right_median=27365.5)
renamed 'mff_TTUQ2b1x1_2026-03-20.png' -> 'transient_report/flat.png'
Using calibrated image CALIBRATED_SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.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_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits
SECOND_EPOCH__SECOND_IMAGE=/data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits
Previews of the CALIBRATED second-epoch images:
fd_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits
fd_Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.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 --norotation --noflagimage --starmatchraius 4 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-50_20.00sec_-15.00C_LIGHT_0023.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits
SExtractor catalog cache: saved Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits.cat to cache
SExtractor catalog cache: saved Cyg-04-Q2b1x1_2025-12-26_19-21-50_20.00sec_-15.00C_LIGHT_0023.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/Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-50_20.00sec_-15.00C_LIGHT_0023.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits
Last image: 2461144.89584774 14.04.2026 09:29:51.245 UTC
ERROR running VaST on the field Cyg-04-Q2b1x1 (less than 4 images processed)
exp_start= 27.12.2025 01:21:11.047 exp= 20.000 JD= 2461036.55649360 ap= 6.6 rotation= 0.000 *detected= 24070 *matched= 24070 status=OK /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits
exp_start= 27.12.2025 01:21:50.982 exp= 20.000 JD= 2461036.55695581 ap= 6.6 rotation= -0.003 *detected= 23956 *matched= 22337 status=OK /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-50_20.00sec_-15.00C_LIGHT_0023.fits
exp_start= 14.04.2026 09:29:51.245 exp= 20.000 JD= 2461144.89584774 ap= 7.8 rotation= -175.730 *detected= 1601 *matched= 1048 status=OK /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits
exp_start= 14.04.2026 09:34:20.501 exp= 20.000 JD= 2461144.89896413 ap= 6.8 rotation= -175.626 *detected= 568 *matched= 494 status=ERROR /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits
wait
*------ default.sex.telephoto_lens_vSTL ------*
'default.sex.telephoto_lens_vSTL' -> 'default.sex'
Starting VaST with default.sex.telephoto_lens_vSTL
./vast --norotation --noflagimage --starmatchraius 4 --matchstarnumber 500 --selectbestaperture --sysrem 0 --type 4 --maxsextractorflag 99 --UTC --nofind --nojdkeyword /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-50_20.00sec_-15.00C_LIGHT_0023.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits
SExtractor catalog cache: saved Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits.cat to cache
SExtractor catalog cache: saved Cyg-04-Q2b1x1_2025-12-26_19-21-50_20.00sec_-15.00C_LIGHT_0023.fits.cat to cache
VaST run complete with default.sex.telephoto_lens_vSTL
The four input images were /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-50_20.00sec_-15.00C_LIGHT_0023.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits
Last image: 2461144.89584774 14.04.2026 09:29:51.245 UTC
ERROR running VaST on the field Cyg-04-Q2b1x1 (less than 4 images processed)
exp_start= 27.12.2025 01:21:11.047 exp= 20.000 JD= 2461036.55649360 ap= 4.9 rotation= 0.000 *detected= 187178 *matched= 187178 status=OK /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-11_20.00sec_-15.00C_LIGHT_0022.fits
exp_start= 27.12.2025 01:21:50.982 exp= 20.000 JD= 2461036.55695581 ap= 4.9 rotation= -0.003 *detected= 188170 *matched= 169212 status=OK /data_ssd/NMW-TexasTech/reference_imgs/Cyg-04-Q2b1x1_2025-12-26_19-21-50_20.00sec_-15.00C_LIGHT_0023.fits
exp_start= 14.04.2026 09:29:51.245 exp= 20.000 JD= 2461144.89584774 ap= 5.6 rotation= -175.728 *detected= 13905 *matched= 10646 status=OK /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-29-51_20.00sec_-5.00C_LIGHT_0881.fits
exp_start= 14.04.2026 09:34:20.501 exp= 20.000 JD= 2461144.89896413 ap= 4.5 rotation= -118.593 *detected= 7404 *matched= 0 status=ERROR /data_ssd/NMW-TexasTech/workdir//img_2026-04-14_CI_Cyg-04-Q2b1x1_043512_TTUQ2b1x1_20893_zFMFS54W/fd_Cyg-04-Q2b1x1_2026-04-14_04-34-20_20.00sec_-4.90C_LIGHT_0882.fits
########### Completed Cyg-04-Q2b1x1 ###########
The analysis was running at tau
We are allowed to update the exclusion list at tau host
Found ../exclusion_list_TTUQ2.txt
#### The exclusion list before filtering-out asteroids, bad pixels and adding Gaia sources ####
###################################################################################
renamed 'exclusion_list_index_html.txt_noasteroids' -> 'exclusion_list_index_html.txt'
renamed 'exclusion_list_index_html.txt_nohotpixels' -> 'exclusion_list_index_html.txt'
# Count candidates with no identification (that also don't look like hot pix)
Found 0 unidentified candidates (excluding asteroids, hot pixels and known variable stars).
###################################################################################
0 candidates found (excluding asteroids and hot pixels)
This does not look like a test run
###################################################################################
exclusion_list_gaiadr2.txt NOT FOUND
exclusion_list_apass.txt NOT FOUND
IS_THIS_TEST_RUN=NO ALLOW_EXCLUSION_LIST_UPDATE= YES
#### Nothing to add to the exclusion list ####
The observatory MPC code is V36
############################################################
ls: cannot access 'planets.txt': No such file or directory
############################################################
Positions of selected moons from JPL HORIZONS for JD(UT):
ls: cannot access 'moons.txt': No such file or directory
############################################################
Positions of selected spacecraft from JPL HORIZONS for JD(UT):
ls: cannot access 'spacecraft.txt': No such file or directory
############################################################
ls: cannot access 'comets.txt': No such file or directory
############################################################
List of recent ASAS-SN transients from https://www.astronomy.ohio-state.edu/asassn/transients.html :
ls: cannot access 'asassn_transients_list.txt': No such file or directory
############################################################
Truncated list of TOCP transients from http://www.cbat.eps.harvard.edu/unconf/tocp.html :
ls: cannot access 'tocp_transients_list.txt': No such file or directory
=== Transient Factory Profiling ===
Started: Tue Apr 14 04:36:47 CDT 2026
=======================================
TIMING SExtractor: 2 seconds
TIMING matching_and_photometry: 0 seconds
TIMING lightcurve_write: 1 seconds
TIMING select_aperture: 1 seconds
VAST_RUN_default.sex.telephoto_lens_onlybrightstars_v1: 9s (0.15 min)
TIMING SExtractor: 5 seconds
TIMING matching_and_photometry: 5 seconds
TIMING lightcurve_write: 0 seconds
TIMING select_aperture: 5 seconds
VAST_RUN_default.sex.telephoto_lens_vSTL: 173s (2.88 min)
FIELD_Cyg-04-Q2b1x1: 192s (3.20 min)
=======================================
TOTAL_RUNTIME: 198s (3.30 min)
Finished: Tue Apr 14 04:40:05 CDT 2026