Helix_Altair60EDF_ZWO258MC__25x120s_kvda_final

SIMPLE = T / file does conform to FITS standard

BITPIX = -32 / number of bits per data pixel

NAXIS = 3 / number of data axes

NAXIS1 = 3786 / length of data axis 1

NAXIS2 = 2088 / 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= 'Helix_Light_ (9).fits'

DATE = '2025-12-11T14:08:59' / UTC date that FITS file was created

DATE-OBS= '2025-09-27T00:43:03.123000' / 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= 282.003 / [mm] Focal length

CENTALT = 13.96794 / [deg] Altitude of telescope

CENTAZ = 221.3879 / [deg] Azimuth of telescope

XBINNING= 1 / Camera binning mode

YBINNING= 1 / Camera binning mode

XPIXSZ = 2.9 / [um] Pixel X axis size

YPIXSZ = 2.9 / [um] Pixel Y axis size

INSTRUME= 'ZWO CCD ASI585MC Pro' / Instrument name

CCD-TEMP= -5. / [degC] CCD temperature

GAIN = 252 / Sensor gain

OFFSET = 10 / Sensor gain offset

FOCPOS = 4328 / [step] Focuser position

FOCTEMP = 11.65 / [degC] Focuser temperature

STACKCNT= 23 / Stack frames

LIVETIME= 2760. / [s] Exposure time after deadtime correction

EXPSTART= 2460945.51936785 / [JD] Exposure start time (standard Julian date)

EXPEND = 2460945.553524 / [JD] Exposure end time (standard Julian date)

OBJECT = 'NGC 281 ' / Name of the object of interest

AIRMASS = 4.099216 / Airmass at frame center (Gueymard 1993)

SITELAT = 44.21667 / [deg] Observation site latitude

SITELONG= 3.733333 / [deg] Observation site longitude

OBJCTRA = '22 29 37.480' / [H M S] Image center Right Ascension

OBJCTDEC= '-20 50 12.277' / [D M S] Image center Declination

RA = 337.406168174039 / [deg] Image center Right Ascension

DEC = -20.8367435402333 / [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 = 1893.5 / Axis1 reference pixel

CRPIX2 = 1044.5 / Axis2 reference pixel

CRVAL1 = 337.406168174039 / [deg] Axis1 reference value

CRVAL2 = -20.8367435402333 / [deg] Axis2 reference value

LONPOLE = 180. / Native longitude of celestial pole

CDELT1 = -0.000588761401210908 / [deg] X pixel size

CDELT2 = 0.000589648313133794 / [deg] Y pixel size

PC1_1 = -0.999969574028117 / Linear transformation matrix (1, 1)

PC1_2 = -0.00780070625176158 / Linear transformation matrix (1, 2)

PC2_1 = 0.0103457835324644 / Linear transformation matrix (2, 1)

PC2_2 = -0.999946480949405 / 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 = 1.10985843106405E-07

A_1_1 = -2.96946171197561E-08

A_0_2 = -5.63862726458701E-08

A_3_0 = -6.42976925778611E-10

A_2_1 = -1.17923075334193E-11

A_1_2 = -5.83321352532853E-10

A_0_3 = 2.58515572361804E-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 = 3.16614540637847E-08

B_1_1 = -1.88815523813094E-08

B_0_2 = -2.44823742483784E-08

B_3_0 = 1.06822034843259E-11

B_2_1 = -5.98716729935875E-10

B_1_2 = -5.96661983306927E-12

B_0_3 = -6.53727356366695E-10

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

AP_0_0 = 0.000653281011140776

AP_1_0 = -7.65474192654381E-06

AP_0_1 = -3.7312483532209E-08

AP_2_0 = -1.12275303664872E-07

AP_1_1 = 2.98641922566389E-08

AP_0_2 = 5.60760811407093E-08

AP_3_0 = 6.49690373556379E-10

AP_2_1 = 1.18854670972163E-11

AP_1_2 = 5.908864139853E-10

AP_0_3 = -2.59401646914076E-11

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

BP_0_0 = 8.97254252084931E-05

BP_1_0 = 1.39623460110056E-07

BP_0_1 = -4.70440795008464E-06

BP_2_0 = -3.18842128151058E-08

BP_1_1 = 1.89723212770988E-08

BP_0_2 = 2.45410815152435E-08

BP_3_0 = -1.0812754406146E-11

BP_2_1 = 6.04623584470799E-10

BP_1_2 = 5.92208721911539E-12

BP_0_3 = 6.58810999872616E-10

PLTSOLVD= T / Siril internal solver

HISTORY Crop (x=21, y=32, w=3786, h=2088)

HISTORY Plate Solve

HISTORY VeraLux v6.0 Stretch

HISTORY Background neutralization

HISTORY Background neutralization

HISTORY Background neutralization

HISTORY Background neutralization

HISTORY Background neutralization

FRAME = 'Light ' / Frame Type

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

SCALE = 2.099193E+00 / arcsecs per pixel

PIERSIDE= 'EAST ' / East, looking West

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