Koen Van der Auwera - IC405_ALTAIR60ED_ZWO585MC_87x120s_OptoL_kvda

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' / Software that created this HDU

FILENAME= 'IC_405_Light_090.fits'

DATE = '2026-01-06T08:24:56' / UTC date that FITS file was created

DATE-OBS= '2025-12-26T20:29:51.588000' / 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

FILTER = 'mixed ' / Active filter name

FOCALLEN= 282.28 / [mm] Focal length

CENTALT = 61.76291 / [deg] Altitude of telescope

CENTAZ = 113.8073 / [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= -11. / [degC] CCD temperature

GAIN = 252 / Sensor gain

OFFSET = 10 / Sensor gain offset

FOCPOS = 4330 / [step] Focuser position

FOCTEMP = -1.99 / [degC] Focuser temperature

STACKCNT= 174 / Stack frames

LIVETIME= 20880. / [s] Exposure time after deadtime correction

EXPSTART= 2461036.22254112 / [JD] Exposure start time (standard Julian date)

EXPEND = 2461036.35545819 / [JD] Exposure end time (standard Julian date)

OBJECT = 'IC 405 ' / Name of the object of interest

AIRMASS = 1.134859 / Airmass at frame center (Gueymard 1993)

SITELAT = 51.21667 / [deg] Observation site latitude

SITELONG= 4.4 / [deg] Observation site longitude

OBJCTRA = '05 16 31.261' / [H M S] Image center Right Ascension

OBJCTDEC= '+34 21 16.345' / [D M S] Image center Declination

RA = 79.1302521633358 / [deg] Image center Right Ascension

DEC = 34.3545402994129 / [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 = 79.1302521633358 / [deg] Axis1 reference value

CRVAL2 = 34.3545402994129 / [deg] Axis2 reference value

LONPOLE = 180. / Native longitude of celestial pole

CDELT1 = -0.000588670308206217 / [deg] X pixel size

CDELT2 = 0.000588585817527174 / [deg] Y pixel size

PC1_1 = 0.999293689065653 / Linear transformation matrix (1, 1)

PC1_2 = 0.0375782249921171 / Linear transformation matrix (1, 2)

PC2_1 = -0.0369129278321911 / Linear transformation matrix (2, 1)

PC2_2 = 0.999318485648522 / 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 = 5.8917536638118E-08

A_1_1 = -1.67822198776804E-08

A_0_2 = 5.07303517733735E-08

A_3_0 = -7.5939699929532E-10

A_2_1 = -4.31833388611652E-12

A_1_2 = -7.10039115624143E-10

A_0_3 = 1.99658932869151E-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 = 2.38156999492416E-08

B_1_1 = 4.28478559144063E-08

B_0_2 = -2.42766148913415E-09

B_3_0 = 8.67200012551222E-12

B_2_1 = -7.23941320157782E-10

B_1_2 = 1.11491580337074E-11

B_0_3 = -8.00883896109532E-10

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

AP_0_0 = 0.00105191940292571

AP_1_0 = -1.23124584746614E-05

AP_0_1 = 7.06222242415378E-08

AP_2_0 = -5.99695087039491E-08

AP_1_1 = 1.68730816442959E-08

AP_0_2 = -5.14130192323594E-08

AP_3_0 = 7.6921127608704E-10

AP_2_1 = 4.2886833124392E-12

AP_1_2 = 7.22390314068299E-10

AP_0_3 = -2.01281913755701E-11

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

BP_0_0 = 0.000132845465071226

BP_1_0 = 2.3679603776973E-07

BP_0_1 = -7.99569305653947E-06

BP_2_0 = -2.40442988821773E-08

BP_1_1 = -4.27772089127397E-08

BP_0_2 = 2.3281419039516E-09

BP_3_0 = -8.82746993210177E-12

BP_2_1 = 7.3285817329496E-10

BP_1_2 = -1.14974360710542E-11

BP_0_3 = 8.0963980123498E-10

PLTSOLVD= T

HISTORY GraXpert AI denoise: strength 0.62

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