Chi Persei, H Persei

SIMPLE = T / file does conform to FITS standard

BITPIX = -32 / number of bits per data pixel

NAXIS = 3 / number of data axes

NAXIS1 = 2132 / length of data axis 1

NAXIS2 = 3198 / 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 = 4964 / Lower visualization cutoff

MIPS-LO = 210 / Upper visualization cutoff

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

DATE = '2026-01-22T12:14:41' / UTC date that FITS file was created

DATE-OBS= '2026-01-22T01:31:43' / YYYY-MM-DDThh🇲🇲ss observation start, UT

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

EXPTIME = 15. / [s] Exposure time duration

ISOSPEED= 1600. / ISO camera setting

FOCALLEN= 271.551 / [mm] Focal length

XBINNING= 1 / Camera binning mode

YBINNING= 1 / Camera binning mode

XPIXSZ = 3.92 / [um] Pixel X axis size

YPIXSZ = 3.92 / [um] Pixel Y axis size

INSTRUME= 'Nikon D3400' / Instrument name

STACKCNT= 38 / Stack frames

LIVETIME= 534. / [s] Exposure time after deadtime correction

EXPSTART= 2461062.55846065 / [JD] Exposure start time (standard Julian date)

EXPEND = 2461062.57259259 / [JD] Exposure end time (standard Julian date)

OBJCTRA = '02 20 41.645' / [H M S] Image center Right Ascension

OBJCTDEC= '+57 06 30.693' / [D M S] Image center Declination

RA = 35.1735192574856 / [deg] Image center Right Ascension

DEC = 57.1085257208343 / [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 = 1066.5 / Axis1 reference pixel

CRPIX2 = 1599.5 / Axis2 reference pixel

CRVAL1 = 35.1735192574856 / [deg] Axis1 reference value

CRVAL2 = 57.1085257208343 / [deg] Axis2 reference value

LONPOLE = 180. / Native longitude of celestial pole

CDELT1 = -0.000827184115968792 / [deg] X pixel size

CDELT2 = 0.000827013085530828 / [deg] Y pixel size

PC1_1 = 0.72992577126168 / Linear transformation matrix (1, 1)

PC1_2 = -0.683526421177735 / Linear transformation matrix (1, 2)

PC2_1 = 0.681925240464992 / Linear transformation matrix (2, 1)

PC2_2 = 0.731421879913886 / 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 = -2.10784208904809E-06

A_1_1 = -3.43929367891591E-08

A_0_2 = -8.84354850313722E-07

A_3_0 = -5.21473992336943E-10

A_2_1 = 1.69191041155525E-11

A_1_2 = -6.01082467839339E-10

A_0_3 = -1.5548621181618E-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 = -1.46812780468691E-07

B_1_1 = -1.17320598913395E-06

B_0_2 = -2.4285737698057E-07

B_3_0 = 5.18249189647058E-12

B_2_1 = -5.61058837661226E-10

B_1_2 = 1.07244541243977E-11

B_0_3 = -6.23111536103901E-10

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

AP_0_0 = -0.00473933345335567

AP_1_0 = 1.14841724507819E-06

AP_0_1 = 7.99658676762296E-08

AP_2_0 = 2.12050418117378E-06

AP_1_1 = 3.52197137743161E-08

AP_0_2 = 8.91509618544619E-07

AP_3_0 = 5.30227443845269E-10

AP_2_1 = -1.66658117445509E-11

AP_1_2 = 6.09125030121779E-10

AP_0_3 = 1.60865128338456E-11

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

BP_0_0 = -0.000922058351486624

BP_1_0 = 5.70921787489347E-07

BP_0_1 = -2.17035219496342E-06

BP_2_0 = 1.47672521820192E-07

BP_1_1 = 1.18420037169313E-06

BP_0_2 = 2.4522758990757E-07

BP_3_0 = -4.87293497889179E-12

BP_2_1 = 5.67040834386704E-10

BP_1_2 = -9.96327678845773E-12

BP_0_3 = 6.2831648628931E-10

PLTSOLVD= T / Siril internal solver

HISTORY Beschneiden (x=2954, y=399, w=2132, h=3198)

HISTORY SCNR (Typ=Durchschnittlich neutral, St rke=1.00, Erhaltung=true)

HISTORY Hintergrundextraktion (Korrektur: Subtraction)

HISTORY Astrometrie / Plate Solving

HISTORY Photometrische Farbkalibrierung (Algorithmus: PCC)

HISTORY Asinh Transformation: (stretch= 1.0, bp=0.00100)

HISTORY Histogramm- bertragungen. (Mitte=0.000, lo=0.003, hi=1.000)

END

 

Done