M42_Altair60EDF_40x120s_kvda_hdrmerge

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 1.4.0-beta4' / Software that created this HDU

FILENAME= 'M_42_Light_030.fits'

DATE = '2025-10-31T07:36:46' / UTC date that FITS file was created

DATE-OBS= '2025-09-23T03:42:13.745000' / YYYY-MM-DDThh🇲🇲ss observation start,

IMAGETYP= 'Light Frame' / Type of image

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

EXPTIME = 120. / [s] Exposure time duration

TELESCOP= 'ALTAIR 60ED 285@F\4.8' / Telescope used to acquire this image

FOCALLEN= 282.332 / [mm] Focal length

CENTALT = 36.58965 / [deg] Altitude of telescope

CENTAZ = 152.2026 / [deg] Azimuth of telescope

XBINNING= 1 / Camera binning mode

YBINNING= 1 / Camera binning mode

XPIXSZ = 2.90000009536743 / [um] Pixel X axis size

YPIXSZ = 2.90000009536743 / [um] Pixel Y axis size

INSTRUME= 'ZWO CCD ASI585MC Pro' / Instrument name

CCD-TEMP= 0. / [degC] CCD temperature

GAIN = 252 / Sensor gain

OFFSET = 10 / Sensor gain offset

FOCPOS = 4509 / [step] Focuser position

FOCTEMP = 12.88 / [degC] Focuser temperature

STACKCNT= 29 / Stack frames

LIVETIME= 3480. / [s] Exposure time after deadtime correction

EXPSTART= 2460941.61253818 / [JD] Exposure start time (standard Julian date)

EXPEND = 2460941.65571464 / [JD] Exposure end time (standard Julian date)

OBJECT = 'M 42 ' / Name of the object of interest

AIRMASS = 1.675606 / Airmass at frame center (Gueymard 1993)

SITELAT = 44.21667 / [deg] Observation site latitude

SITELONG= 3.733333 / [deg] Observation site longitude

OBJCTRA = '05 35 13.629' / [H M S] Image center Right Ascension

OBJCTDEC= '-05 23 30.733' / [D M S] Image center Declination

RA = 83.8067878837445 / [deg] Image center Right Ascension

DEC = -5.39187040713546 / [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 = 2000. / Equatorial equinox

CRPIX1 = 1920.5 / Axis1 reference pixel

CRPIX2 = 1080.5 / Axis2 reference pixel

CRVAL1 = 83.8067878837445 / [deg] Axis1 reference value

CRVAL2 = -5.39187040713546 / [deg] Axis2 reference value

LONPOLE = 180. / Native longitude of celestial pole

CDELT1 = -0.000588455938499469 / [deg] X pixel size

CDELT2 = 0.000588583056461158 / [deg] Y pixel size

PC1_1 = 0.999971045287839 / Linear transformation matrix (1, 1)

PC1_2 = 0.00760976911259961 / Linear transformation matrix (1, 2)

PC2_1 = -0.00702752718973035 / Linear transformation matrix (2, 1)

PC2_2 = 0.999975306625917 / Linear transformation matrix (2, 2)

A_ORDER = 3 / SIP polynomial degree, axis 1, pixel-to-sky

A_0_0 = 0.

A_1_0 = 0.

A_0_1 = 0.

A_2_0 = 1.16911073765905E-07

A_1_1 = -1.11959906936081E-07

A_0_2 = 7.16908360650294E-09

A_3_0 = -6.76211241394976E-10

A_2_1 = -2.04692169387105E-12

A_1_2 = -6.69588888291091E-10

A_0_3 = -9.18538069637013E-12

B_ORDER = 3 / SIP polynomial degree, axis 2, pixel-to-sky

B_0_0 = 0.

B_1_0 = 0.

B_0_1 = 0.

B_2_0 = -2.89566112787058E-08

B_1_1 = 8.38622570492964E-08

B_0_2 = -1.43691782836682E-07

B_3_0 = 9.32418367917355E-12

B_2_1 = -6.49526526061618E-10

B_1_2 = -9.33393380767258E-12

B_0_3 = -6.82169296903145E-10

AP_ORDER= 3 / SIP polynomial degree, axis 1, sky-to-pixel

AP_0_0 = 0.00105211833932696

AP_1_0 = -9.2957364065116E-06

AP_0_1 = -1.1112805187518E-06

AP_2_0 = -1.18573994905131E-07

AP_1_1 = 1.13305179100407E-07

AP_0_2 = -7.9687737384666E-09

AP_3_0 = 6.83934757097103E-10

AP_2_1 = 2.35169800240733E-12

AP_1_2 = 6.79515280517906E-10

AP_0_3 = 1.05509269501993E-11

BP_ORDER= 3 / SIP polynomial degree, axis 2, sky-to-pixel

BP_0_0 = -0.000233826619013268

BP_1_0 = -1.77923941294731E-07

BP_0_1 = -6.20693370445569E-06

BP_2_0 = 2.92944919580771E-08

BP_1_1 = -8.46952465327864E-08

BP_0_2 = 1.44627980293916E-07

BP_3_0 = -9.4308911460658E-12

BP_2_1 = 6.56733254728743E-10

BP_1_2 = 1.0331309847295E-11

BP_0_3 = 6.8874448264194E-10

HISTORY GraXpert AI denoise: strength 0.76

FRAME = 'Light ' / Frame Type

APTDIA = 6.000E+01 / Telescope diameter (mm)

SCALE = 2.099193E+00 / arcsecs per pixel

PIERSIDE= 'WEST ' / West, looking East

RADECSYS= 'FK5 ' / RADECSYS

SECPIX1 = 2.0991930515E+00 / SECPIX1

SECPIX2 = 2.0991930515E+00 / SECPIX2

COMMENT Generated by INDI

WB_R = 5.500E+01 / White Balance - Red

WB_B = 7.500E+01 / White Balance - Blue

END

Done