SIMPLE = T / file does conform to FITS standard
BITPIX = -32 / number of bits per data pixel
NAXIS = 3 / number of data axes
NAXIS1 = 6097 / length of data axis 1
NAXIS2 = 4023 / 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 = '2026-08-16T18:46:59' / UTC date that FITS file was created
DATE-OBS= '2026-08-16T05:25:06.672827' / 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 = 6373 / [step] Focuser position
STACKCNT= 10 / Stack frames
LIVETIME= 1800. / [s] Exposure time after deadtime correction
EXPSTART= 2461268.71725263 / [JD] Exposure start time (standard Julian date)
EXPEND = 2461268.75187014 / [JD] Exposure end time (standard Julian date)
OBJECT = 'NGC 6604' / Name of the object of interest
SITELAT = 37.9191 / [deg] Observation site latitude
SITELONG= -122.541 / [deg] Observation site longitude
OBJCTRA = '18 21 15.162' / [H M S] Image center Right Ascension
OBJCTDEC= '-11 54 3.849' / [D M S] Image center Declination
RA = 275.313175925981 / [deg] Image center Right Ascension
DEC = -11.9010690613869 / [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 = 1414.50010681 / Axis1 reference pixel
CRPIX2 = 2902.92250061 / Axis2 reference pixel
CRVAL1 = 274.383795383 / [deg] Axis1 reference value
CRVAL2 = -12.5258286118 / [deg] Axis2 reference value
LONPOLE = 180. / Native longitude of celestial pole
CDELT1 = -0.000592063178432553 / [deg] X pixel size
CDELT2 = 0.000592453017424402 / [deg] Y pixel size
PC1_1 = -0.994851777919001 / Linear transformation matrix (1, 1)
PC1_2 = -0.101340712309531 / Linear transformation matrix (1, 2)
PC2_1 = 0.101201781257618 / Linear transformation matrix (2, 1)
PC2_2 = -0.994865920348207 / 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 = 1.24145892235E-07
A_1_1 = -8.20606335631E-08
A_0_2 = -2.43601836226E-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 = 1.46231301359E-08
B_1_1 = 1.10783076734E-07
B_0_2 = -9.61921217799E-08
AP_ORDER= 2 / SIP polynomial degree, axis 1, sky-to-pixel
AP_0_0 = -0.00019121154526
AP_1_0 = -1.77362502758E-07
AP_0_1 = -1.84018436274E-08
AP_2_0 = -1.23962246479E-07
AP_1_1 = 8.19214705628E-08
AP_0_2 = 2.43471190763E-08
BP_ORDER= 2 / SIP polynomial degree, axis 2, sky-to-pixel
BP_0_0 = 6.15155400829E-05
BP_1_0 = 2.25037034354E-08
BP_0_1 = -1.06053949748E-07
BP_2_0 = -1.46160790278E-08
BP_1_1 = -1.10638087301E-07
BP_0_2 = 9.60798136978E-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 = 186 / Camera Angle
IMAGEW = 6248 / Image width, in pixels.
IMAGEH = 4176 / Image height, in pixels.
END