ngc6946_stacked

SIMPLE = T / file does conform to FITS standard

BITPIX = -32 / number of bits per data pixel

NAXIS = 3 / number of data axes

NAXIS1 = 6085 / 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

PROGRAM = 'Siril 1.4.0-beta3' / Software that created this HDU

DATE = '2025-09-08T18:59:32' / UTC date that FITS file was created

DATE-OBS= '2024-07-06T22:16:48.450000' / YYYY-MM-DDThh🇲🇲ss observation start,

IMAGETYP= 'LIGHT ' / Type of image

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

EXPTIME = 240. / [s] Exposure time duration

TELESCOP= 'ASKAR PHQ 151/1057' / Telescope used to acquire this image

FILTER = 'Starless' / Active filter name

FOCALLEN= 1053.628 / [mm] Focal length

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= 'ZWO ASI2600MC Pro' / Instrument name

CCD-TEMP= -14.7 / [degC] CCD temperature

SET-TEMP= -15. / [degC] CCD temperature setpoint

GAIN = 100 / Sensor gain

OFFSET = 1 / Sensor gain offset

CVF = 0.242862924933434 / [e-/ADU] Electrons per A/D unit

STACKCNT= 60 / Stack frames

LIVETIME= 14400. / [s] Exposure time after deadtime correction

EXPSTART= 2460498.42833854 / [JD] Exposure start

Done