F: Usando el servicio de Astrometry.net para resolver imágenes¶
Podemos usar el servicio de Astrometry.net para resolver nuestras imágenes. Para ello debemos estar registrados y tener nuestra api-key (documentación):
[1]:
from astroquery.astrometry_net import AstrometryNet
ast = AstrometryNet()
ast.api_key = "xxxxxxxxxxxxxxxx" # Nuestra API KEY
wcs_header = ast.solve_from_image('imagenes/m1.fits', solve_timeout=120, force_image_upload=True) # Si se resuelve en menos de 120 segundos
# en wcs_header tendremos la información relevante
print("\nProceso acabado")
WARNING: Astrometry.net API key not found in configuration file [astroquery.astrometry_net.core]
WARNING: You need to manually edit the configuration file and add it [astroquery.astrometry_net.core]
WARNING: You may also register it for this session with AstrometryNet.key = 'XXXXXXXX' [astroquery.astrometry_net.core]
WARNING: Astrometry.net API key not found in configuration file [astroquery.astrometry_net.core]
WARNING: You need to manually edit the configuration file and add it [astroquery.astrometry_net.core]
WARNING: You may also register it for this session with AstrometryNet.key = 'XXXXXXXX' [astroquery.astrometry_net.core]
Solving.........
Proceso acabado
[2]:
print(wcs_header)
SIMPLE = T / Standard FITS file BITPIX = 8 / ASCII or bytes array NAXIS = 0 / Minimal header EXTEND = T / There may be FITS ext WCSAXES = 2 / no comment CTYPE1 = 'RA---TAN-SIP' / TAN (gnomic) projection + SIP distortions CTYPE2 = 'DEC--TAN-SIP' / TAN (gnomic) projection + SIP distortions EQUINOX = 2000.0 / Equatorial coordinates definition (yr) LONPOLE = 180.0 / no comment LATPOLE = 0.0 / no comment CRVAL1 = 83.6366370785 / RA of reference point CRVAL2 = 22.0307943715 / DEC of reference point CRPIX1 = 347.211990356 / X reference pixel CRPIX2 = 377.799945831 / Y reference pixel CUNIT1 = 'deg ' / X pixel scale units CUNIT2 = 'deg ' / Y pixel scale units CD1_1 = -0.000142551352787 / Transformation matrix CD1_2 = -0.000137203989287 / no comment CD2_1 = -0.000137352273767 / no comment CD2_2 = 0.000142335752659 / no comment IMAGEW = 968 / Image width, in pixels. IMAGEH = 608 / Image height, in pixels. A_ORDER = 2 / Polynomial order, axis 1 A_0_0 = 0 / no comment A_0_1 = 0 / no comment A_0_2 = 3.78163170231E-06 / no comment A_1_0 = 0 / no comment A_1_1 = -1.17433676935E-06 / no comment A_2_0 = 2.85768424817E-07 / no comment B_ORDER = 2 / Polynomial order, axis 2 B_0_0 = 0 / no comment B_0_1 = 0 / no comment B_0_2 = -5.51481777957E-06 / no comment B_1_0 = 0 / no comment B_1_1 = -1.90886962159E-06 / no comment B_2_0 = 2.18577874674E-07 / no comment AP_ORDER= 2 / Inv polynomial order, axis 1 AP_0_0 = -0.000151250630203 / no comment AP_0_1 = -1.87284633501E-06 / no comment AP_0_2 = -3.7720150535E-06 / no comment AP_1_0 = -7.07748438357E-08 / no comment AP_1_1 = 1.175772204E-06 / no comment AP_2_0 = -2.86019723943E-07 / no comment BP_ORDER= 2 / Inv polynomial order, axis 2 BP_0_0 = 8.5956454101E-05 / no comment BP_0_1 = 3.01788462519E-06 / no comment BP_0_2 = 5.50778122052E-06 / no comment BP_1_0 = 9.48440454872E-07 / no comment BP_1_1 = 1.90368340469E-06 / no comment BP_2_0 = -2.1870788037E-07 / no comment HISTORY Created by the Astrometry.net suite. HISTORY For more details, see http://astrometry.net. HISTORY Git URL https://github.com/dstndstn/astrometry.net HISTORY Git revision 0.89 HISTORY Git date Mon_Jan_17_07:47:26_2022_-0500 HISTORY This is a WCS header was created by Astrometry.net. DATE = '2023-04-20T12:02:59' / Date this file was created. COMMENT -- onefield solver parameters: -- COMMENT Index(0): /data/INDEXES/index-4100/index-4107.fits COMMENT Index(1): /data/INDEXES/index-4100/index-4108.fits COMMENT Index(2): /data/INDEXES/index-4100/index-4109.fits COMMENT Index(3): /data/INDEXES/index-4100/index-4110.fits COMMENT Index(4): /data/INDEXES/index-4100/index-4111.fits COMMENT Index(5): /data/INDEXES/index-4100/index-4112.fits COMMENT Index(6): /data/INDEXES/index-4100/index-4113.fits COMMENT Index(7): /data/INDEXES/index-4100/index-4114.fits COMMENT Index(8): /data/INDEXES/index-4100/index-4115.fits COMMENT Index(9): /data/INDEXES/index-4100/index-4116.fits COMMENT Index(10): /data/INDEXES/index-4100/index-4117.fits COMMENT Index(11): /data/INDEXES/index-4100/index-4118.fits COMMENT Index(12): /data/INDEXES/index-4100/index-4119.fits COMMENT Index(13): COMMENT /data/INDEXES/index-54m1-LITE/index-54m1-056.fits COMMENT Index(14): COMMENT /data/INDEXES/index-54m1-LITE/index-54m1-145.fits COMMENT Index(15): COMMENT 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/data/INDEXES/index-5200-LITE/index-5204-21.fits COMMENT Index(232): COMMENT /data/INDEXES/index-5200-LITE/index-5204-22.fits COMMENT Index(233): COMMENT /data/INDEXES/index-5200-LITE/index-5204-23.fits COMMENT Index(234): COMMENT /data/INDEXES/index-5200-LITE/index-5204-24.fits COMMENT Index(235): COMMENT /data/INDEXES/index-5200-LITE/index-5204-25.fits COMMENT Index(236): COMMENT /data/INDEXES/index-5200-LITE/index-5204-26.fits COMMENT Index(237): COMMENT /data/INDEXES/index-5200-LITE/index-5204-27.fits COMMENT Index(238): COMMENT /data/INDEXES/index-5200-LITE/index-5204-28.fits COMMENT Index(239): COMMENT /data/INDEXES/index-5200-LITE/index-5204-29.fits COMMENT Index(240): COMMENT /data/INDEXES/index-5200-LITE/index-5204-30.fits COMMENT Index(241): COMMENT /data/INDEXES/index-5200-LITE/index-5204-31.fits COMMENT Index(242): COMMENT /data/INDEXES/index-5200-LITE/index-5204-32.fits COMMENT Index(243): COMMENT /data/INDEXES/index-5200-LITE/index-5204-33.fits COMMENT Index(244): COMMENT /data/INDEXES/index-5200-LITE/index-5204-34.fits COMMENT Index(245): COMMENT /data/INDEXES/index-5200-LITE/index-5204-35.fits COMMENT Index(246): COMMENT /data/INDEXES/index-5200-LITE/index-5204-36.fits COMMENT Index(247): COMMENT /data/INDEXES/index-5200-LITE/index-5204-37.fits COMMENT Index(248): COMMENT /data/INDEXES/index-5200-LITE/index-5204-38.fits COMMENT Index(249): COMMENT /data/INDEXES/index-5200-LITE/index-5204-39.fits COMMENT Index(250): COMMENT /data/INDEXES/index-5200-LITE/index-5204-40.fits COMMENT Index(251): COMMENT /data/INDEXES/index-5200-LITE/index-5204-41.fits COMMENT Index(252): COMMENT /data/INDEXES/index-5200-LITE/index-5204-42.fits COMMENT Index(253): COMMENT /data/INDEXES/index-5200-LITE/index-5204-43.fits COMMENT Index(254): COMMENT /data/INDEXES/index-5200-LITE/index-5204-44.fits COMMENT Index(255): COMMENT /data/INDEXES/index-5200-LITE/index-5204-45.fits COMMENT Index(256): COMMENT /data/INDEXES/index-5200-LITE/index-5204-46.fits COMMENT Index(257): COMMENT 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/data/INDEXES/index-5200-LITE/index-5205-12.fits COMMENT Index(271): COMMENT /data/INDEXES/index-5200-LITE/index-5205-13.fits COMMENT Index(272): COMMENT /data/INDEXES/index-5200-LITE/index-5205-14.fits COMMENT Index(273): COMMENT /data/INDEXES/index-5200-LITE/index-5205-15.fits COMMENT Index(274): COMMENT /data/INDEXES/index-5200-LITE/index-5205-16.fits COMMENT Index(275): COMMENT /data/INDEXES/index-5200-LITE/index-5205-17.fits COMMENT Index(276): COMMENT /data/INDEXES/index-5200-LITE/index-5205-18.fits COMMENT Index(277): COMMENT /data/INDEXES/index-5200-LITE/index-5205-19.fits COMMENT Index(278): COMMENT /data/INDEXES/index-5200-LITE/index-5205-20.fits COMMENT Index(279): COMMENT /data/INDEXES/index-5200-LITE/index-5205-21.fits COMMENT Index(280): COMMENT /data/INDEXES/index-5200-LITE/index-5205-22.fits COMMENT Index(281): COMMENT /data/INDEXES/index-5200-LITE/index-5205-23.fits COMMENT Index(282): COMMENT /data/INDEXES/index-5200-LITE/index-5205-24.fits COMMENT Index(283): COMMENT /data/INDEXES/index-5200-LITE/index-5205-25.fits COMMENT Index(284): COMMENT /data/INDEXES/index-5200-LITE/index-5205-26.fits COMMENT Index(285): COMMENT /data/INDEXES/index-5200-LITE/index-5205-27.fits COMMENT Index(286): COMMENT /data/INDEXES/index-5200-LITE/index-5205-28.fits COMMENT Index(287): COMMENT /data/INDEXES/index-5200-LITE/index-5205-29.fits COMMENT Index(288): COMMENT /data/INDEXES/index-5200-LITE/index-5205-30.fits COMMENT Index(289): COMMENT /data/INDEXES/index-5200-LITE/index-5205-31.fits COMMENT Index(290): COMMENT /data/INDEXES/index-5200-LITE/index-5205-32.fits COMMENT Index(291): COMMENT /data/INDEXES/index-5200-LITE/index-5205-33.fits COMMENT Index(292): COMMENT /data/INDEXES/index-5200-LITE/index-5205-34.fits COMMENT Index(293): COMMENT /data/INDEXES/index-5200-LITE/index-5205-35.fits COMMENT Index(294): COMMENT /data/INDEXES/index-5200-LITE/index-5205-36.fits COMMENT Index(295): COMMENT /data/INDEXES/index-5200-LITE/index-5205-37.fits COMMENT Index(296): COMMENT /data/INDEXES/index-5200-LITE/index-5205-38.fits COMMENT Index(297): COMMENT /data/INDEXES/index-5200-LITE/index-5205-39.fits COMMENT Index(298): COMMENT /data/INDEXES/index-5200-LITE/index-5205-40.fits COMMENT Index(299): COMMENT /data/INDEXES/index-5200-LITE/index-5205-41.fits COMMENT Index(300): COMMENT /data/INDEXES/index-5200-LITE/index-5205-42.fits COMMENT Index(301): COMMENT /data/INDEXES/index-5200-LITE/index-5205-43.fits COMMENT Index(302): COMMENT /data/INDEXES/index-5200-LITE/index-5205-44.fits COMMENT Index(303): COMMENT /data/INDEXES/index-5200-LITE/index-5205-45.fits COMMENT Index(304): COMMENT /data/INDEXES/index-5200-LITE/index-5205-46.fits COMMENT Index(305): COMMENT /data/INDEXES/index-5200-LITE/index-5205-47.fits COMMENT Index(306): COMMENT /data/INDEXES/index-5200-LITE/index-5206-00.fits COMMENT Index(307): COMMENT /data/INDEXES/index-5200-LITE/index-5206-01.fits COMMENT Index(308): COMMENT /data/INDEXES/index-5200-LITE/index-5206-02.fits COMMENT Index(309): COMMENT /data/INDEXES/index-5200-LITE/index-5206-03.fits COMMENT Index(310): COMMENT /data/INDEXES/index-5200-LITE/index-5206-04.fits COMMENT Index(311): COMMENT /data/INDEXES/index-5200-LITE/index-5206-05.fits COMMENT Index(312): COMMENT /data/INDEXES/index-5200-LITE/index-5206-06.fits COMMENT Index(313): COMMENT /data/INDEXES/index-5200-LITE/index-5206-07.fits COMMENT Index(314): COMMENT /data/INDEXES/index-5200-LITE/index-5206-08.fits COMMENT Index(315): COMMENT /data/INDEXES/index-5200-LITE/index-5206-09.fits COMMENT Index(316): COMMENT /data/INDEXES/index-5200-LITE/index-5206-10.fits COMMENT Index(317): COMMENT /data/INDEXES/index-5200-LITE/index-5206-11.fits COMMENT Index(318): COMMENT /data/INDEXES/index-5200-LITE/index-5206-12.fits COMMENT Index(319): COMMENT /data/INDEXES/index-5200-LITE/index-5206-13.fits COMMENT Index(320): COMMENT /data/INDEXES/index-5200-LITE/index-5206-14.fits COMMENT Index(321): COMMENT /data/INDEXES/index-5200-LITE/index-5206-15.fits COMMENT Index(322): COMMENT /data/INDEXES/index-5200-LITE/index-5206-16.fits COMMENT Index(323): COMMENT /data/INDEXES/index-5200-LITE/index-5206-17.fits COMMENT Index(324): COMMENT /data/INDEXES/index-5200-LITE/index-5206-18.fits COMMENT Index(325): COMMENT /data/INDEXES/index-5200-LITE/index-5206-19.fits COMMENT Index(326): COMMENT /data/INDEXES/index-5200-LITE/index-5206-20.fits COMMENT Index(327): COMMENT /data/INDEXES/index-5200-LITE/index-5206-21.fits COMMENT Index(328): COMMENT /data/INDEXES/index-5200-LITE/index-5206-22.fits COMMENT Index(329): COMMENT /data/INDEXES/index-5200-LITE/index-5206-23.fits COMMENT Index(330): COMMENT /data/INDEXES/index-5200-LITE/index-5206-24.fits COMMENT Index(331): COMMENT /data/INDEXES/index-5200-LITE/index-5206-25.fits COMMENT Index(332): COMMENT /data/INDEXES/index-5200-LITE/index-5206-26.fits COMMENT Index(333): COMMENT /data/INDEXES/index-5200-LITE/index-5206-27.fits COMMENT Index(334): COMMENT /data/INDEXES/index-5200-LITE/index-5206-28.fits COMMENT Index(335): COMMENT /data/INDEXES/index-5200-LITE/index-5206-29.fits COMMENT Index(336): COMMENT /data/INDEXES/index-5200-LITE/index-5206-30.fits COMMENT Index(337): COMMENT /data/INDEXES/index-5200-LITE/index-5206-31.fits COMMENT Index(338): COMMENT /data/INDEXES/index-5200-LITE/index-5206-32.fits COMMENT Index(339): COMMENT /data/INDEXES/index-5200-LITE/index-5206-33.fits COMMENT Index(340): COMMENT /data/INDEXES/index-5200-LITE/index-5206-34.fits COMMENT Index(341): COMMENT /data/INDEXES/index-5200-LITE/index-5206-35.fits COMMENT Index(342): COMMENT /data/INDEXES/index-5200-LITE/index-5206-36.fits COMMENT Index(343): COMMENT /data/INDEXES/index-5200-LITE/index-5206-37.fits COMMENT Index(344): COMMENT /data/INDEXES/index-5200-LITE/index-5206-38.fits COMMENT Index(345): COMMENT /data/INDEXES/index-5200-LITE/index-5206-39.fits COMMENT Index(346): COMMENT /data/INDEXES/index-5200-LITE/index-5206-40.fits COMMENT Index(347): COMMENT /data/INDEXES/index-5200-LITE/index-5206-41.fits COMMENT Index(348): COMMENT /data/INDEXES/index-5200-LITE/index-5206-42.fits COMMENT Index(349): COMMENT /data/INDEXES/index-5200-LITE/index-5206-43.fits COMMENT Index(350): COMMENT /data/INDEXES/index-5200-LITE/index-5206-44.fits COMMENT Index(351): COMMENT /data/INDEXES/index-5200-LITE/index-5206-45.fits COMMENT Index(352): COMMENT /data/INDEXES/index-5200-LITE/index-5206-46.fits COMMENT Index(353): COMMENT /data/INDEXES/index-5200-LITE/index-5206-47.fits COMMENT Field name: job.axy COMMENT Field scale lower: 0.371901 arcsec/pixel COMMENT Field scale upper: 669.421 arcsec/pixel COMMENT X col name: X COMMENT Y col name: Y COMMENT Start obj: 0 COMMENT End obj: 0 COMMENT Solved_in: (null) COMMENT Solved_out: (null) COMMENT Parity: 2 COMMENT Codetol: 0.01 COMMENT Verify pixels: 1 pix COMMENT Maxquads: 0 COMMENT Maxmatches: 0 COMMENT Cpu limit: 600.000000 s COMMENT Time limit: 0 s COMMENT Total time limit: 0 s COMMENT Total CPU limit: 0.000000 s COMMENT Tweak: yes COMMENT Tweak AB order: 2 COMMENT Tweak ABP order: 2 COMMENT -- COMMENT -- properties of the matching quad: -- COMMENT index id: 5202 COMMENT index healpix: 23 COMMENT index hpnside: 2 COMMENT log odds: 272.512 COMMENT odds: 2.2412e+118 COMMENT quadno: 576738 COMMENT stars: 1703537,1703542,1703541,1703535 COMMENT field: 0,3,4,7 COMMENT code error: 0.00237867 COMMENT nmatch: 43 COMMENT nconflict: 0 COMMENT nfield: 61 COMMENT nindex: 44 COMMENT scale: 0.712176 arcsec/pix COMMENT parity: 0 COMMENT quads tried: 5981 COMMENT quads matched: 16532 COMMENT quads verified: 16413 COMMENT objs tried: 8 COMMENT cpu time: 0.839615 COMMENT -- END
Borramos las cabeceras COMMENT, que no nos interesan:
[3]:
wcs_header.remove("COMMENT", remove_all=True)
print(wcs_header)
SIMPLE = T / Standard FITS file BITPIX = 8 / ASCII or bytes array NAXIS = 0 / Minimal header EXTEND = T / There may be FITS ext WCSAXES = 2 / no comment CTYPE1 = 'RA---TAN-SIP' / TAN (gnomic) projection + SIP distortions CTYPE2 = 'DEC--TAN-SIP' / TAN (gnomic) projection + SIP distortions EQUINOX = 2000.0 / Equatorial coordinates definition (yr) LONPOLE = 180.0 / no comment LATPOLE = 0.0 / no comment CRVAL1 = 83.6366370785 / RA of reference point CRVAL2 = 22.0307943715 / DEC of reference point CRPIX1 = 347.211990356 / X reference pixel CRPIX2 = 377.799945831 / Y reference pixel CUNIT1 = 'deg ' / X pixel scale units CUNIT2 = 'deg ' / Y pixel scale units CD1_1 = -0.000142551352787 / Transformation matrix CD1_2 = -0.000137203989287 / no comment CD2_1 = -0.000137352273767 / no comment CD2_2 = 0.000142335752659 / no comment IMAGEW = 968 / Image width, in pixels. IMAGEH = 608 / Image height, in pixels. A_ORDER = 2 / Polynomial order, axis 1 A_0_0 = 0 / no comment A_0_1 = 0 / no comment A_0_2 = 3.78163170231E-06 / no comment A_1_0 = 0 / no comment A_1_1 = -1.17433676935E-06 / no comment A_2_0 = 2.85768424817E-07 / no comment B_ORDER = 2 / Polynomial order, axis 2 B_0_0 = 0 / no comment B_0_1 = 0 / no comment B_0_2 = -5.51481777957E-06 / no comment B_1_0 = 0 / no comment B_1_1 = -1.90886962159E-06 / no comment B_2_0 = 2.18577874674E-07 / no comment AP_ORDER= 2 / Inv polynomial order, axis 1 AP_0_0 = -0.000151250630203 / no comment AP_0_1 = -1.87284633501E-06 / no comment AP_0_2 = -3.7720150535E-06 / no comment AP_1_0 = -7.07748438357E-08 / no comment AP_1_1 = 1.175772204E-06 / no comment AP_2_0 = -2.86019723943E-07 / no comment BP_ORDER= 2 / Inv polynomial order, axis 2 BP_0_0 = 8.5956454101E-05 / no comment BP_0_1 = 3.01788462519E-06 / no comment BP_0_2 = 5.50778122052E-06 / no comment BP_1_0 = 9.48440454872E-07 / no comment BP_1_1 = 1.90368340469E-06 / no comment BP_2_0 = -2.1870788037E-07 / no comment HISTORY Created by the Astrometry.net suite. HISTORY For more details, see http://astrometry.net. HISTORY Git URL https://github.com/dstndstn/astrometry.net HISTORY Git revision 0.89 HISTORY Git date Mon_Jan_17_07:47:26_2022_-0500 HISTORY This is a WCS header was created by Astrometry.net. DATE = '2023-04-20T12:02:59' / Date this file was created. END
Por último vamos a actualizar nuestro fichero añadiéndole las cabeceras WCS para poder usarlas en el futuro:
[4]:
from astropy.io import fits
hdul = fits.open("imagenes/m1.fits") # Abrimos la imagen y obtenemos sus datos
header = hdul[0].header
data = hdul[0].data
print("Cabecera del fichero original:")
print(header)
header.update(wcs_header) # Actualiza la cabecera (reemplaza las que existen y añade las nuevas)
print("\n\n\n\nCabecera del fichero con las nuevas claves devueltas por Astrometry.net")
print(header)
nuevaImagen = fits.PrimaryHDU(data=data, header=header) # Grabamos el fichero
nuevaImagen.writeto("salidas/m1_resuelta.fit",overwrite=True)
Cabecera del fichero original:
SIMPLE = T / file does conform to FITS standard BITPIX = 16 / number of bits per data pixel NAXIS = 2 / number of data axes NAXIS1 = 968 / length of data axis 1 NAXIS2 = 608 / length of data axis 2 EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H BZERO = 32768 / offset data range to that of unsigned short BSCALE = 1 / default scaling factor DATAMIN = 51748. / Minimum value DATAMAX = 65504. / Maximum value MIN1 = 51748. / Min Channel 1 MAX1 = 65504. / Max Channel 1 MEAN1 = 58586.1121788772 / Mean Channel 1 MEDIAN1 = 58532. / Median Channel 1 STDDEV1 = 1624.2603360392 / Standard Deviation Channel 1 ROWORDER= 'TOP-DOWN' / ROWORDER INSTRUME= 'ZWO CCD ASI174MM-Cool' / INSTRUME TELESCOP= 'Celestron NexStar' / TELESCOP OBSERVER= 'Unknown ' / OBSERVER OBJECT = 'Unknown ' / OBJECT EXPTIME = 40. / Total Exposure Time (s) CCD-TEMP= 20.2 / CCD Temperature (Celsius) PIXSIZE1= 5.86 / Pixel Size 1 (microns) PIXSIZE2= 5.86 / Pixel Size 2 (microns) XBINNING= 2 / Binning factor in width YBINNING= 2 / Binning factor in height XPIXSZ = 11.72 / X binned pixel size in microns YPIXSZ = 11.72 / Y binned pixel size in microns FRAME = 'Light ' / FRAME IMAGETYP= 'Light Frame' / IMAGETYP FOCALLEN= 3392. / Focal Length (mm) APTDIA = 300. / Telescope diameter (mm) FOCUSPOS= 50000 / Focus position in steps FOCUSTEM= 0. / Focuser temperature in degrees C SCALE = 0.7128054 / arcsecs per pixel SITELAT = 37.15083 / Latitude of the imaging site in degrees SITELONG= -3.633333 / Longitude of the imaging site in degrees AIRMASS = 2.19409 / AIRMASS OBJCTAZ = 278.2779 / Azimuth of center of image in Degrees OBJCTALT= 27.03991 / Altitude of center of image in Degrees OBJCTRA = '5 34 31.86' / Object J2000 RA in Hours OBJCTDEC= '22 07 03.94' / Object J2000 DEC in Degrees RA = 83.63275 / Object J2000 RA in Degrees DEC = 22.11776 / Object J2000 DEC in Degrees EQUINOX = 2000 / EQUINOX CRVAL1 = 83.632745966 / CRVAL1 CRVAL2 = 22.11776113 / CRVAL2 RADECSYS= 'FK5 ' / RADECSYS CTYPE1 = 'RA---TAN' / CTYPE1 CTYPE2 = 'DEC--TAN' / CTYPE2 CRPIX1 = 484. / CRPIX1 CRPIX2 = 304. / CRPIX2 SECPIX1 = 0.71280544077 / SECPIX1 SECPIX2 = 0.71280544077 / SECPIX2 CDELT1 = 0.00019800151132 / CDELT1 CDELT2 = 0.00019800151132 / CDELT2 CROTA1 = 43.798353 / CROTA1 CROTA2 = 43.798353 / CROTA2 DATE-OBS= '2022-04-16T20:58:07.811' / 2022-04-16T20:58:07.811 COMMENT = ' ' / Generated by INDI GAIN = 320. / GAIN OFFSET = 1. / OFFSET END
Cabecera del fichero con las nuevas claves devueltas por Astrometry.net
SIMPLE = T / Standard FITS file BITPIX = 8 / ASCII or bytes array NAXIS = 0 / Minimal header NAXIS1 = 968 / length of data axis 1 NAXIS2 = 608 / length of data axis 2 EXTEND = T / There may be FITS ext COMMENT FITS (Flexible Image Transport System) format is defined in 'AstronomyCOMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H BZERO = 32768 / offset data range to that of unsigned short BSCALE = 1 / default scaling factor DATAMIN = 51748. / Minimum value DATAMAX = 65504. / Maximum value MIN1 = 51748. / Min Channel 1 MAX1 = 65504. / Max Channel 1 MEAN1 = 58586.1121788772 / Mean Channel 1 MEDIAN1 = 58532. / Median Channel 1 STDDEV1 = 1624.2603360392 / Standard Deviation Channel 1 ROWORDER= 'TOP-DOWN' / ROWORDER INSTRUME= 'ZWO CCD ASI174MM-Cool' / INSTRUME TELESCOP= 'Celestron NexStar' / TELESCOP OBSERVER= 'Unknown ' / OBSERVER OBJECT = 'Unknown ' / OBJECT EXPTIME = 40. / Total Exposure Time (s) CCD-TEMP= 20.2 / CCD Temperature (Celsius) PIXSIZE1= 5.86 / Pixel Size 1 (microns) PIXSIZE2= 5.86 / Pixel Size 2 (microns) XBINNING= 2 / Binning factor in width YBINNING= 2 / Binning factor in height XPIXSZ = 11.72 / X binned pixel size in microns YPIXSZ = 11.72 / Y binned pixel size in microns FRAME = 'Light ' / FRAME IMAGETYP= 'Light Frame' / IMAGETYP FOCALLEN= 3392. / Focal Length (mm) APTDIA = 300. / Telescope diameter (mm) FOCUSPOS= 50000 / Focus position in steps FOCUSTEM= 0. / Focuser temperature in degrees C SCALE = 0.7128054 / arcsecs per pixel SITELAT = 37.15083 / Latitude of the imaging site in degrees SITELONG= -3.633333 / Longitude of the imaging site in degrees AIRMASS = 2.19409 / AIRMASS OBJCTAZ = 278.2779 / Azimuth of center of image in Degrees OBJCTALT= 27.03991 / Altitude of center of image in Degrees OBJCTRA = '5 34 31.86' / Object J2000 RA in Hours OBJCTDEC= '22 07 03.94' / Object J2000 DEC in Degrees RA = 83.63275 / Object J2000 RA in Degrees DEC = 22.11776 / Object J2000 DEC in Degrees EQUINOX = 2000.0 / Equatorial coordinates definition (yr) CRVAL1 = 83.6366370785 / RA of reference point CRVAL2 = 22.0307943715 / DEC of reference point RADECSYS= 'FK5 ' / RADECSYS CTYPE1 = 'RA---TAN-SIP' / TAN (gnomic) projection + SIP distortions CTYPE2 = 'DEC--TAN-SIP' / TAN (gnomic) projection + SIP distortions CRPIX1 = 347.211990356 / X reference pixel CRPIX2 = 377.799945831 / Y reference pixel SECPIX1 = 0.71280544077 / SECPIX1 SECPIX2 = 0.71280544077 / SECPIX2 CDELT1 = 0.00019800151132 / CDELT1 CDELT2 = 0.00019800151132 / CDELT2 CROTA1 = 43.798353 / CROTA1 CROTA2 = 43.798353 / CROTA2 DATE-OBS= '2022-04-16T20:58:07.811' / 2022-04-16T20:58:07.811 COMMENT = ' ' / Generated by INDI GAIN = 320. / GAIN OFFSET = 1. / OFFSET WCSAXES = 2 / no comment LONPOLE = 180.0 / no comment LATPOLE = 0.0 / no comment CUNIT1 = 'deg ' / X pixel scale units CUNIT2 = 'deg ' / Y pixel scale units CD1_1 = -0.000142551352787 / Transformation matrix CD1_2 = -0.000137203989287 / no comment CD2_1 = -0.000137352273767 / no comment CD2_2 = 0.000142335752659 / no comment IMAGEW = 968 / Image width, in pixels. IMAGEH = 608 / Image height, in pixels. A_ORDER = 2 / Polynomial order, axis 1 A_0_0 = 0 / no comment A_0_1 = 0 / no comment A_0_2 = 3.78163170231E-06 / no comment A_1_0 = 0 / no comment A_1_1 = -1.17433676935E-06 / no comment A_2_0 = 2.85768424817E-07 / no comment B_ORDER = 2 / Polynomial order, axis 2 B_0_0 = 0 / no comment B_0_1 = 0 / no comment B_0_2 = -5.51481777957E-06 / no comment B_1_0 = 0 / no comment B_1_1 = -1.90886962159E-06 / no comment B_2_0 = 2.18577874674E-07 / no comment AP_ORDER= 2 / Inv polynomial order, axis 1 AP_0_0 = -0.000151250630203 / no comment AP_0_1 = -1.87284633501E-06 / no comment AP_0_2 = -3.7720150535E-06 / no comment AP_1_0 = -7.07748438357E-08 / no comment AP_1_1 = 1.175772204E-06 / no comment AP_2_0 = -2.86019723943E-07 / no comment BP_ORDER= 2 / Inv polynomial order, axis 2 BP_0_0 = 8.5956454101E-05 / no comment BP_0_1 = 3.01788462519E-06 / no comment BP_0_2 = 5.50778122052E-06 / no comment BP_1_0 = 9.48440454872E-07 / no comment BP_1_1 = 1.90368340469E-06 / no comment BP_2_0 = -2.1870788037E-07 / no comment DATE = '2023-04-20T12:02:59' / Date this file was created. HISTORY Created by the Astrometry.net suite. HISTORY For more details, see http://astrometry.net. HISTORY Git URL https://github.com/dstndstn/astrometry.net HISTORY Git revision 0.89 HISTORY Git date Mon_Jan_17_07:47:26_2022_-0500 HISTORY This is a WCS header was created by Astrometry.net. END