Koen Van der Auwera - M77_ALTAIR60EDF_ZWO585_30x120s_kvda

SIMPLE = T / file does conform to FITS standard

BITPIX = -32 / number of bits per data pixel

NAXIS = 3 / number of data axes

NAXIS1 = 3782 / length of data axis 1

NAXIS2 = 2095 / 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_77_Light_016.fits'

DATE = '2025-09-30T18:27:36' / UTC date that FITS file was created

DATE-OBS= '2025-09-23T02:05:15.840000' / 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= 282.404 / [mm] Focal length

CENTALT = 45.78787 / [deg] Altitude of telescope

CENTAZ = 175.3201 / [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= -1. / [degC] CCD temperature

GAIN = 252 / Sensor gain

OFFSET = 10 / Sensor gain offset

FOCPOS = 4509 / [step] Focuser position

FOCTEMP = 13.74 / [degC] Focuser temperature

STACKCNT= 29 / Stack frames

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

EXPSTART= 2460941.56625418 / [JD] Exposure start time (standard Julian date)

EXPEND = 2460941.60939898 / [JD] Exposure end time (standard Julian date)

OBJECT = 'M 77 ' / Name of the object of interest

AIRMASS = 1.394283 / Airmass at frame center (Gueymard 1993)

SITELAT = 44.21667 / [deg] Observation site latitude

SITELONG= 3.733333 / [deg] Observation site longitude

OBJCTRA = '02 42 42.742' / [H M S] Image center Right Ascension

OBJCTDEC= '-00 00 45.871' / [D M S] Image center Declination

RA = 40.6780898601215 / [deg] Image center Right Ascension

DEC = -0.0127418128140135 / [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 = 1891.5 / Axis1 reference pixel

CRPIX2 = 1048. / Axis2 reference pixel

CRVAL1 = 40.6780898601215 / [deg] Axis1 reference value

CRVAL2 = -0.0127418128140199 / [deg] Axis2 reference value

LONPOLE = 180. / Native longitude of celestial pole

CDELT1 = -0.000588341037007343 / [deg] X pixel size

CDELT2 = 0.000588398228132914 / [deg] Y pixel size

PC1_1 = 0.999966170732213 / Linear transformation matrix (1, 1)

PC1_2 = 0.00822541130615302 / Linear transformation matrix (1, 2)

PC2_1 = -0.00820447252492669 / Linear transformation matrix (2, 1)

PC2_2 = 0.999966342748889 / 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 = 1.25808510273498E-07

A_1_1 = -1.19725068700852E-07

A_0_2 = 4.64207760047613E-08

A_3_0 = -6.84912999647466E-10

A_2_1 = -5.10461722063355E-12

A_1_2 = -6.7769469590364E-10

A_0_3 = -1.62301778825624E-11

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 = -3.28355461414987E-08

B_1_1 = 9.50720096884776E-08

B_0_2 = -1.59054740341887E-07

B_3_0 = 5.66746579012132E-12

B_2_1 = -6.68593340552061E-10

B_1_2 = 2.17900741746912E-12

B_0_3 = -6.76013792000392E-10

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

AP_0_0 = 0.00123757741251514

AP_1_0 = -9.03399754159651E-06

AP_0_1 = -1.00367558169876E-06

AP_2_0 = -1.27624773125369E-07

AP_1_1 = 1.20936183765414E-07

AP_0_2 = -4.78754344522693E-08

AP_3_0 = 6.92656834630678E-10

AP_2_1 = 5.50837014045103E-12

AP_1_2 = 6.87194023839251E-10

AP_0_3 = 1.72145204193992E-11

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

BP_0_0 = -0.000211897265075499

BP_1_0 = -3.30201580628998E-07

BP_0_1 = -5.70880812211794E-06

BP_2_0 = 3.32114994483148E-08

BP_1_1 = -9.61664454074488E-08

BP_0_2 = 1.59842412916547E-07

BP_3_0 = -5.67101287078286E-12

BP_2_1 = 6.7579708987318E-10

BP_1_2 = -1.43044671226048E-12

BP_0_3 = 6.82067030972867E-10

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