Nébuleuse de la Grotte SH2-155 12 01 2026

SIMPLE = T / file does conform to FITS standard

BITPIX = -32 / number of bits per data pixel

NAXIS = 3 / number of data axes

NAXIS1 = 5342 / length of data axis 1

NAXIS2 = 3460 / 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

MIPS-LO = 3646 / Upper visualization cutoff

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

DATE = '2026-01-12T08:19:11' / UTC date that FITS file was created

DATE-OBS= '2025-08-22T21:42:28.629162' / YYYY-MM-DDThh🇲🇲ss observation start,

IMAGETYP= 'Light ' / Type of image

ROWORDER= 'BOTTOM-UP' / Order of the rows in image array

EXPTIME = 45. / [s] Exposure time duration

FILTER = 'mixed_Starless' / Active filter name

XBINNING= 1 / Camera binning mode

YBINNING= 1 / Camera binning mode

XPIXSZ = 2.4 / [um] Pixel X axis size

YPIXSZ = 2.4 / [um] Pixel Y axis size

INSTRUME= 'ZWO ASI183MC Pro' / Instrument name

CCD-TEMP= -18. / [degC] CCD temperature

SET-TEMP= -18. / [degC] CCD temperature setpoint

GAIN = 100 / Sensor gain

OFFSET = 37 / Sensor gain offset

CVF = 1.2015 / [e-/ADU] Electrons per A/D unit

STACKCNT= 774 / Stack frames

LIVETIME= 34830. / [s] Exposure time after deadtime correction

EXPSTART= 2460910.386939 / [JD] Exposure start ti

Done