SIMPLE = T / file does conform to FITS standard
BITPIX = -32 / number of bits per data pixel
NAXIS = 3 / number of data axes
NAXIS1 = 6191 / length of data axis 1
NAXIS2 = 4092 / 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
BZERO = 0. / Offset data range to that of unsigned short
BSCALE = 1. / Default scaling factor
MIPS-HI = 65535 / Lower visualization cutoff
PROGRAM = 'Siril 1.4.4' / Software that created this HDU
DATE = '2026-08-24T18:01:37' / UTC date that FITS file was created
DATE-OBS= '2026-08-20T06:14:18.577598' / YYYY-MM-DDThh:mm:ss observation start,
IMAGETYP= 'Light ' / Type of image
ROWORDER= 'BOTTOM-UP' / Order of the rows in image array
EXPTIME = 180. / [s] Exposure time duration
TELESCOP= 'ZWO AM3N' / Telescope used to acquire this image
FILTER = 'starless' / Active filter name
FOCALLEN= 363. / [mm] Focal length
XBINNING= 1 / Camera binning mode
YBINNING= 1 / Camera binning mode
XPIXSZ = 3.75999999046326 / [um] Pixel X axis size
YPIXSZ = 3.75999999046326 / [um] Pixel Y axis size
INSTRUME= 'ZWO ASI2600MC Duo' / Instrument name
CCD-TEMP= -10. / [degC] CCD temperature
SET-TEMP= -10. / [degC] CCD temperature setpoint
GAIN = 100 / Sensor gain
OFFSET = 50 / Sensor gain offset
CVF = 0.242862924933434 / [e-/ADU] Electrons per A/D unit
FOCPOS = 6369 / [step] Focuser position
STACKCNT= 80 / Stack frames
LIVETIME= 14400. / [s] Exposure time after deadtime correction
EXPSTART= 2461272.70211366 / [JD] Exposure start time (standard Julian date)
EXPEND = 2461272.90789876 / [JD] Exposure end time (standard Julian date)
OBJECT = 'NGC 6888' / Name of the object of interest
SITELAT = 37.919 / [deg] Observation site latitude
SITELONG= -122.541 / [deg] Observation site longitude
OBJCTRA = '20 16 22.217' / [H M S] Image center Right Ascension
OBJCTDEC= '+38 49 41.789' / [D M S] Image center Declination
RA = 304.092572399987 / [deg] Image center Right Ascension
DEC = 38.8282747927685 / [deg] Image center Declination
CTYPE1 = 'RA---TAN-SIP' / TAN (gnomic) projection + SIP distortions
CTYPE2 = 'DEC--TAN-SIP' / TAN (gnomic) projection + SIP distortions
CUNIT1 = 'deg ' / Unit of coordinates
CUNIT2 = 'deg ' / Unit of coordinates
EQUINOX = 9.87654321E+107 / Equatorial equinox
CRPIX1 = 2101.94607544 / Axis1 reference pixel
CRPIX2 = 2702.48786926 / Axis2 reference pixel
CRVAL1 = 304.79229902 / [deg] Axis1 reference value
CRVAL2 = 39.2780699616 / [deg] Axis2 reference value
LONPOLE = 180. / Native longitude of celestial pole
CDELT1 = -0.000592276876350893 / [deg] X pixel size
CDELT2 = 0.000592339796886174 / [deg] Y pixel size
PC1_1 = 0.994549606069745 / Linear transformation matrix (1, 1)
PC1_2 = 0.104264476532111 / Linear transformation matrix (1, 2)
PC2_1 = -0.103855735621156 / Linear transformation matrix (2, 1)
PC2_2 = 0.994592371868289 / Linear transformation matrix (2, 2)
A_ORDER = 2 / SIP polynomial degree, axis 1, pixel-to-sky
A_0_0 = 0.
A_1_0 = 0.
A_0_1 = 0.
A_2_0 = 4.45693223689E-08
A_1_1 = -2.22455291793E-07
A_0_2 = -1.60871715432E-08
B_ORDER = 2 / SIP polynomial degree, axis 2, pixel-to-sky
B_0_0 = 0.
B_1_0 = 0.
B_0_1 = 0.
B_2_0 = -7.09249472138E-08
B_1_1 = 6.97315724208E-08
B_0_2 = -7.63922598771E-08
AP_ORDER= 2 / SIP polynomial degree, axis 1, sky-to-pixel
AP_0_0 = -0.000234401630907
AP_1_0 = 7.69472678061E-08
AP_0_1 = -1.43924914388E-08
AP_2_0 = -4.44816949674E-08
AP_1_1 = 2.22285867934E-07
AP_0_2 = 1.61375187097E-08
BP_ORDER= 2 / SIP polynomial degree, axis 2, sky-to-pixel
BP_0_0 = 0.000191520012783
BP_1_0 = -2.12644490795E-09
BP_0_1 = 1.01541822201E-07
BP_2_0 = 7.08576515793E-08
BP_1_1 = -6.9592425882E-08
BP_0_2 = 7.6341995459E-08
CREATOR = 'ZWO ASIAIR Plus' / Capture software
XORGSUBF= 0 / Subframe X position in binned pixels
YORGSUBF= 0 / Subframe Y position in binned pixels
CCDXBIN = 1 / Camera X Bin
CCDYBIN = 1 / Camera Y Bin
GUIDECAM= 'ZWO ASI220MM Mini' / Guide camera model
ROTATOR = 6 / Camera Angle
IMAGEW = 6248 / Image width, in pixels.
IMAGEH = 4176 / Image height, in pixels.
END