SIMPLE = T / file does conform to FITS standardBITPIX = -32 / number of bits per data pixelNAXIS = 2 / number of data axesNAXIS1 = 5929 / length of data axis 1NAXIS2 =

SIMPLE = T / file does conform to FITS standard

BITPIX = -32 / number of bits per data pixel

NAXIS = 2 / number of data axes

NAXIS1 = 5929 / length of data axis 1

NAXIS2 = 3857 / length of data axis 2

EXTEND = T / FITS dataset may contain extensions

COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy

COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H

BZERO = 0. / Offset data range to that of unsigned short

BSCALE = 1. / Default scaling factor

MIPS-HI = 55322 / Lower visualization cutoff

MIPS-LO = 832 / Upper visualization cutoff

PROGRAM = 'Siril 1.4.0-beta1' / Software that created this HDU

DATE = '2025-05-19T16:45:20' / UTC date that FITS file was created

DATE-OBS= '2025-05-18T23:50:56.338000' / YYYY-MM-DDThh🇲🇲ss observation start,

IMAGETYP= 'LIGHT ' / Type of image

ROWORDER= 'TOP-DOWN' / Order of the rows in image array

EXPTIME = 180. / [s] Exposure time duration

TELESCOP= 'SKYVISION' / Telescope used to acquire this image

FILTER = 'LUMINANCE' / Active filter name

FOCALLEN= 1000. / [mm] Focal length

CENTALT = 66.6900893571034 / [deg] Altitude of telescope

CENTAZ = 278.329319264794 / [deg] Azimuth of telescope

XBINNING= 1 / Camera binning mode

YBINNING= 1 / Camera binning mode

XPIXSZ = 3.76 / [um] Pixel X axis size

YPIXSZ = 3.76 / [um] Pixel Y axis size

INSTRUME= 'veTEC571M' / Instrument name

CCD-TEMP= -9.9 / [degC] CCD temperature

SET-TEMP= -10. / [degC] CCD temperature setpoint

GAIN = 100 / Sensor gain

OFFSET = 50 / Sensor gain offset

FOCNAME = 'PLL ASCOM Focuser' / Focusing equipment name

FOCPOS = 481 / [step] Focuser position

FOCUSSZ = 0 / [um] Focuser step size

STACKCNT= 40 / Stack frames

LIVETIME= 7200. / [s] Exposure time after deadtime correction

EXPSTART= 2460814.49161904 / [JD] Exposure start time (standard Julian date)

EXPEND = 2460814.57520643 / [JD] Exposure end time (standard Julian date)

OBJECT = 'M 51 ' / Name of the object of interest

AIRMASS = 1.08860226231765 / Airmass at frame center (Gueymard 1993)

SITELAT = 49.1436111111111 / [deg] Observation site latitude

SITELONG= 2.47888888888889 / [deg] Observation site longitude

SITEELEV= 64. / [m] Observation site elevation

OBJCTRA = '13 29 53' / [H M S] Image center Right Ascension

OBJCTDEC= '+47 11 43' / [D M S] Image center Declination

RA = 202.471373515033 / [deg] Image center Right Ascension

DEC = 47.1943102867065 / [deg] Image center Declination

HISTORY Extraction gradient GraXpert, lissage 0.500

HISTORY Recadrage (x=157, y=175, w=5929, h=3857)

HISTORY GHS pivot : 0.000, montant : 62.35, local : 15.00 [0.00 1.00]

HISTORY Transf. histogramme (mid=0.500, lo=0.438, hi=1.000)

HISTORY GHS pivot : 0.002, montant : 63.61, local : -5.00 [0.00 1.00]

HISTORY GHS pivot : 0.007, montant : 62.35, local : -5.00 [0.00 1.00]

HISTORY GHS pivot : 0.019, montant : 21.02, local : -5.00 [0.00 1.00]

HISTORY GHS pivot : 0.249, montant : 56.45, local : -5.00 [0.00 1.00]

HISTORY GHS pivot : 0.249, montant : 20.59, local : -5.00 [0.00 1.00]

HISTORY GHS pivot : 0.125, montant : 19.76, local : -5.00 [0.00 1.00]

HISTORY GHS pivot : 0.084, montant : 3.17, local : -5.00 [0.00 1.00]

HISTORY GHS pivot : 0.251, montant : 1.71, local : -5.00 [0.00 1.00]

HISTORY GHS pivot : 0.500, montant : 1.02, local : -5.00 [0.00 1.00]

HISTORY GHS pivot : 0.751, montant : 5.17, local : -5.00 [0.00 1.00]

HISTORY D convolution

HISTORY D bruitage NL-Bayes (mod=0.500, CC activ e)

DATE-LOC= '2025-05-19T01:50:56.338' / Time of observation (local)

DATE-AVG= '2025-05-18T23:52:26.518' / Averaged midpoint time (UTC)

CAMERAID= 'Omegon_\\?\usb#vid_0547&pid_1428#5&193dc1b4&0&13' / Imaging instrumen

READOUTM= 'Low Conversion Gain' / Sensor readout mode

USBLIMIT= 9 / Camera-specific USB setting

FOCRATIO= 4.0 / Focal ratio

PIERSIDE= 'East' / Telescope pointing state

FWHEEL = 'PegasusAstro Indigo' / Filter Wheel name

OBJCTROT= 0.0 / [deg] planned rotation of imaged object

END

Done