SIMPLE = T / file does conform to FITS standard BITPIX = -32 / number of bits per data pixel NAXIS = 3 / number of data axes NAXIS1 = 3840 / length of data axis 1 NAXIS2 = 2160 / 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 PROGRAM = 'Siril 1.4.2' / Software that created this HDU DATE = '2026-04-27T18:54:01' / UTC date that FITS file was created DATE-OBS= '2026-04-26T21:58:40.161507' / 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 FOCALLEN= 611.669 / [mm] Focal length XBINNING= 1 / Camera binning mode YBINNING= 1 / Camera binning mode XPIXSZ = 2.9 / [um] Pixel X axis size YPIXSZ = 2.9 / [um] Pixel Y axis size INSTRUME= 'ZWO ASI585MC Air' / Instrument name CCD-TEMP= -19.3999996185303 / [degC] CCD temperature SET-TEMP= -25. / [degC] CCD temperature setpoint GAIN = 200 / Sensor gain OFFSET = 15 / Sensor gain offset CVF = 1.12999999523163 / [e-/ADU] Electrons per A/D unit FOCPOS = 34430 / [step] Focuser position STACKCNT= 45 / Stack frames LIVETIME= 8100. / [s] Exposure time after deadtime correction EXPSTART= 2461157.31634309 / [JD] Exposure s