IC1396 La trompa de elefante

SIMPLE = T / file does conform to FITS standard

BITPIX = -32 / number of bits per data pixel

NAXIS = 3 / number of data axes

NAXIS1 = 4047 / length of data axis 1

NAXIS2 = 2718 / 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 1.4.4' / Software that created this HDU

FILENAME= '2026-05-16_02-08-58__-10.00_300.00s_0025.fits'

DATE = '2026-07-11T11:02:04' / UTC date that FITS file was created

DATE-OBS= '2026-05-16T00:08:58.955551' / YYYY-MM-DDThh🇲🇲ss observation start,

IMAGETYP= 'LIGHT ' / Type of image

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

EXPTIME = 300. / [s] Exposure time duration

TELESCOP= 'Skywatcher 72 ed' / Telescope used to acquire this image

FOCALLEN= 374.476 / [mm] Focal length

CENTALT = 33.1423184914512 / [deg] Altitude of telescope

CENTAZ = 40.5723863262364 / [deg] Azimuth of telescope

XBINNING= 1 / Camera binning mode

YBINNING= 1 / Camera binning mode

XPIXSZ = 4.63000011444092 / [um] Pixel X axis size

YPIXSZ = 4.63000011444092 / [um] Pixel Y axis size

INSTRUME= 'ATR294C ' / Instrument name

CCD-TEMP= -10. / [degC] CCD temperature

SET-TEMP= -10. / [degC] CCD temperature setpoint

GAIN = 121 / Sensor gain

OFFSET = 30 / Sensor gain offset

STACKCNT= 60 / Stack frames

LIVETIME= 18000. / [s] Exposure time after deadtime correction

EXPSTART= 2461176.41667902 / [JD] Exposure start time (standard Julian date)

EXPEND = 2461176.63259413 / [JD] Exposure end time (standard Julian date)

OBJECT = 'Nebulosa Trompa de Elefante' / Name of the object of interest

AIRMASS = 1.82499557650879 / Airmass at frame center (Gueymard 1993)

SITELAT = 40.7402777777778 / [deg] Observation site latitude

SITELONG= -3.5925 / [deg] Observation site longitude

SITEELEV= 883. / [m] Observation site elevation

OBJCTRA = '21 36 39.051' / [H M S] Image center Right Ascension

OBJCTDEC= '+57 27 19.768' / [D M S] Image center Declination

RA = 324.162712640505 / [deg] Image center Right Ascension

DEC = 57.4554909945675 / [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 = 2024. / Axis1 reference pixel

CRPIX2 = 1359.5 / Axis2 reference pixel

CRVAL1 = 324.162712640505 / [deg] Axis1 reference value

CRVAL2 = 57.4554909945675 / [deg] Axis2 reference value

LONPOLE = 180. / Native longitude of celestial pole

CDELT1 = -0.000708290253256223 / [deg] X pixel size

CDELT2 = 0.000708512235596218 / [deg] Y pixel size

PC1_1 = -0.0330160754546843 / Linear transformation matrix (1, 1)

PC1_2 = -0.999454820770589 / Linear transformation matrix (1, 2)

PC2_1 = 0.999385120095459 / Linear transformation matrix (2, 1)

PC2_2 = -0.03506254029281 / 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 = -1.2086438054847E-07

A_1_1 = 6.29805307902086E-08

A_0_2 = -5.08224942384625E-08

A_3_0 = -7.35008374295979E-10

A_2_1 = 8.86685141253103E-12

A_1_2 = -7.49729815565965E-10

A_0_3 = -3.29355572989204E-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 = -2.17674516380385E-08

B_1_1 = -1.05954351147449E-07

B_0_2 = 6.01232231070516E-08

B_3_0 = 3.42038527439934E-12

B_2_1 = -7.52437009815223E-10

B_1_2 = 1.58669126172278E-12

B_0_3 = -7.18919875515245E-10

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

AP_0_0 = -0.000204484687104844

AP_1_0 = -1.55671674791913E-05

AP_0_1 = 3.38091269738224E-07

AP_2_0 = 1.22613319548663E-07

AP_1_1 = -6.41555755941807E-08

AP_0_2 = 5.08722353024776E-08

AP_3_0 = 7.45896329471838E-10

AP_2_1 = -9.12230690817449E-12

AP_1_2 = 7.62165019376372E-10

AP_0_3 = 2.9770051433375E-12

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

BP_0_0 = 0.000207021901711295

BP_1_0 = 4.02024807304134E-08

BP_0_1 = -1.09965061879658E-05

BP_2_0 = 2.1861028433407E-08

BP_1_1 = 1.0669808631624E-07

BP_0_2 = -6.08667363291384E-08

BP_3_0 = -3.46133725033779E-12

BP_2_1 = 7.63489381277152E-10

BP_1_2 = -1.73489346432616E-12

BP_0_3 = 7.27280151008482E-10

PLTSOLVD= T

HISTORY VeraLux v1.5.2 Stretch

HISTORY VeraLux Curves

HISTORY VeraLux Revela

HISTORY VeraLux Vectra

DATE-LOC= '2026-05-16T02:08:58.9555519' / Time of observation (local)

MJD-OBS = 61176.006237905 / Modified Julian Date of observation

DATE-AVG= '2026-05-16T00:11:29.2639754' / Averaged midpoint time (UTC)

MJD-AVG = 61176.0079775811 / Modified Julian Date of averaged midpoint

CAMERAID= 'ToupTek_\\?\usb#vid_0547&pid_121a#5&114e2b25&0&13' / Imaging instrume

READOUTM= 'High Conversion Gain' / Sensor readout mode

USBLIMIT= 2 / Camera-specific USB setting

FOCRATIO= 5.0 / Focal ratio

PIERSIDE= 'West' / Telescope pointing state

OBJCTROT= 90.0 / [deg] planned rotation of imaged object

END

 

Done