SIMPLE = T / file does conform to FITS standard

BITPIX = -32 / number of bits per data pixel

NAXIS = 3 / number of data axes

NAXIS1 = 6596 / length of data axis 1

NAXIS2 = 3906 / 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

PROGRAM = 'Siril 1.4.0-beta3' / Software that created this HDU

FILENAME= 'Img893.nef'

DATE = '2025-09-28T05:57:34' / UTC date that FITS file was created

DATE-OBS= '2025-09-28T01:59:12' / YYYY-MM-DDThh🇲🇲ss observation start, UT

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

EXPTIME = 120. / [s] Exposure time duration

ISOSPEED= 2000. / ISO camera setting

FOCALLEN= 349.015 / [mm] Focal length

XBINNING= 1 / Camera binning mode

YBINNING= 1 / Camera binning mode

XPIXSZ = 4.35 / [um] Pixel X axis size

YPIXSZ = 4.35 / [um] Pixel Y axis size

INSTRUME= 'Nikon Z 8' / Instrument name

STACKCNT= 90 / Stack frames

LIVETIME= 10800. / [s] Exposure time after deadtime correction

EXPSTART= 2460946.57153935 / [JD] Exposure start time (standard Julian date)

EXPEND = 2460946.69800926 / [JD] Exposure end time (standard Julian date)

OBJCTRA = '20 57 33.493' / [H M S] Image center Right Ascension

OBJCTDEC= '+44 20 8.204' / [D M S] Image center Declination

RA = 314.389552679012 / [deg] Image center Right Ascension

DEC = 44.3356122095578 / [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 = 3374.5 / Axis1 reference pixel

CRPIX2 = 2133.5 / Axis2 reference pixel

CRVAL1 = 314.316417410616 / [deg] Axis1 reference value

CRVAL2 = 44.4649849372378 / [deg] Axis2 reference value

LONPOLE = 180. / Native longitude of celestial pole

CDELT1 = -0.000714102839018755 / [deg] X pixel size

CDELT2 = 0.000714125578266618 / [deg] Y pixel size

PC1_1 = 0.999884345462982 / Linear transformation matrix (1, 1)

PC1_2 = -0.0152084087946279 / Linear transformation matrix (1, 2)

PC2_1 = 0.0151518083294775 / Linear transformation matrix (2, 1)

PC2_2 = 0.9998852047632 / 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 = 7.37232916860729E-08

A_1_1 = -3.19387560892366E-08

A_0_2 = -9.11536837244955E-09

A_3_0 = -6.02638794702981E-11

A_2_1 = 2.87763649378023E-12

A_1_2 = -5.97289421291022E-11

A_0_3 = -3.75472308572456E-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 = -7.06109054247092E-09

B_1_1 = 9.05949080901921E-08

B_0_2 = -2.46269058473928E-08

B_3_0 = -1.77256505830348E-13

B_2_1 = -5.7171644546712E-11

B_1_2 = 5.51659247284017E-12

B_0_3 = -6.1812439766824E-11

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

AP_0_0 = 0.000840734049471275

AP_1_0 = -1.6683227365144E-06

AP_0_1 = -1.56918762883889E-08

AP_2_0 = -7.41504606776651E-08

AP_1_1 = 3.2132301950985E-08

AP_0_2 = 9.06349284005886E-09

AP_3_0 = 6.05686493375772E-11

AP_2_1 = -2.90015438078615E-12

AP_1_2 = 6.00431324326385E-11

AP_0_3 = 3.76150735791593E-12

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

BP_0_0 = -0.000258888933924185

BP_1_0 = -2.89780433782433E-09

BP_0_1 = -9.7241646490609E-07

BP_2_0 = 7.11044840985938E-09

BP_1_1 = -9.09584691825188E-08

BP_0_2 = 2.4743373951236E-08

BP_3_0 = 1.75437908062712E-13

BP_2_1 = 5.7448756100725E-11

BP_1_2 = -5.54120846081177E-12

BP_0_3 = 6.20157977821203E-11

PLTSOLVD= T / Siril internal solver

HISTORY Background extraction (Correction: Subtraction)

HISTORY Asinh Transformation: (stretch= 486.8, bp=0.00400)

HISTORY SCNR (type=average neutral, amount=1.00, preserve=true)

HISTORY Plate Solve

HISTORY Photometric CC (algorithm: PCC)

HISTORY Crop (x=766, y=987, w=6596, h=3906)

HISTORY Deconvolution

END