M81-82-gimp

SIMPLE = T / file does conform to FITS standard

BITPIX = -32 / number of bits per data pixel

NAXIS = 3 / number of data axes

NAXIS1 = 5184 / length of data axis 1

NAXIS2 = 3456 / length of data axis 2

NAXIS3 = 3 / length of data axis 3

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

MIPS-FHI= 1 / Upper visualization cutoff

MIPS-FLO= 0 / Lower visualization cutoff

BZERO = 0 / offset data range to that of unsigned short

BSCALE = 1 / default scaling factor

DATE = '2023-06-24T08:28:29' / UTC date that FITS file was created

DATE-OBS= '2023-06-23T21:33:07.415000' / YYYY-MM-DDThh🇲🇲ss observation start,

INSTRUME= 'Canon DSLR EOS 700D' / instrument name

OBSERVER= ' ' / observer name

TELESCOP= 'Celestron AVX' / telescope used to acquire this image

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

XPIXSZ = 4.29 / X pixel size microns

YPIXSZ = 4.29 / Y pixel size microns

XBINNING= 1 / Camera binning mode

YBINNING= 1 / Camera binning mode

FOCALLEN= 400 / Camera focal length

CCD-TEMP= 26 / CCD temp in C

EXPTIME = 180 / Exposure time [s]

STACKCNT= 30 / Stack frames

LIVETIME= 5400 / Exposure time after deadtime correction

EXPSTART= 2.46012e+06 / Exposure start time (standard Julian date)

EXPEND = 2.46012e+06 / Exposure end time (standard Julian date)

IMAGETYP= 'Light Frame' / Type of image

OBJECT = 'M 81 ' / Name of the object of interest

ISOSPEED= 1600 / ISO camera setting

SITELAT = 47.9167 / [deg] Observation site latitude

SITELONG= 1.93306 / [deg] Observation site longitude

CTYPE1 = 'RA---TAN' / Coordinate type for the first axis

CTYPE2 = 'DEC--TAN' / Coordinate type for the second axis

CUNIT1 = 'deg ' / Unit of coordinates

CUNIT2 = 'deg ' / Unit of coordinates

EQUINOX = 2000 / Equatorial equinox

OBJCTRA = ' 9 54 07.44' / Image center Right Ascension (hms)

OBJCTDEC= '69 05 24.54' / Image center Declination (dms)

RA = 148.531 / Image center Right Ascension (deg)

DEC = 69.0901 / Image center Declination (deg)

CRPIX1 = 2592 / Axis1 reference pixel

CRPIX2 = 1728 / Axis2 reference pixel

CRVAL1 = 148.531 / Axis1 reference value (deg)

CRVAL2 = 69.0901 / Axis2 reference value (deg)

CDELT1 = 0.000614602 / X pixel size (deg)

CDELT2 = 0.000614602 / Y pixel size (deg)

PC1_1 = 0.999979 / Linear transformation matrix (1, 1)

PC1_2 = -0.00655006 / Linear transformation matrix (1, 2)

PC2_1 = 0.00655006 / Linear transformation matrix (2, 1)

PC2_2 = 0.999979 / Linear transformation matrix (2, 2)

AIRMASS = 1.44604 / Airmass

HISTORY mean stacking with GESDT rejection (outliers=0.300 significance=0.050),

HISTORY additive+scaling normalized input, normalized output, no image weighting

HISTORY , equalized RGB

HISTORY Extraction du gradient (Correction : Subtraction)

HISTORY Photométrie

HISTORY Réduction de la trame (niveau=1.00)

HISTORY Réduction de la trame (niveau=2.01)

HISTORY Réduction de la trame (niveau=2.01)

HISTORY Réduction de la trame (niveau=0.98)

HISTORY Transformation asinh : (stretch= 53.1, bp=0.00100)

HISTORY Transf. histogramme (mid=0.157, lo=0.218, hi=1.000)

HISTORY SCNR (type=neutre moyen, qté=1.00, préserve=true)

HISTORY Rehaussement de la saturation (quantité=0.50)

END

 

Done