Maar in de header van die file staat:
SIMPLE = T / NOST 100-2.0 FITS Conformance BITPIX = 32 / Dn accumulations NAXIS = 2 NAXIS1 = 512 NAXIS2 = 512 EXTEND = T DATE = '2001-10-17T16:01:30.388' / FITS File written FILENAME= 'MCPOD_20011017_150000000_AA_12' / FITS File Name COMMENT *****MCPOD PRIMARY FITS HEADER VERSION 001.000***** COMMENT *****TOP LEVEL INFORMATION***** CRPIX1 = 256.5 CRPIX2 = 256.5 CRVAL1 = 0 CRVAL2 = 0 CDELT1 = 5 CDELT2 = 5 CTYPE1 = 'ARCSEC ' CTYPE2 = 'ARCSEC ' DATE_OBS= '2001-10-17T15:00:00.000' / Start of odometer accumulation ACC_TIME= 3600 / Odometer Accumulation Time TELESCOP= 'GOES-12 ' / Spacecraft identification INSTRUME= 'SXI-0 ' / Solar X-Ray Imager COMMENT *****HEADER GROUP***** LEVEL = 0 / Level 0 image VERINGST= '003.007 ' / Level 0 ingest version VERLEVL0= '003.007 ' / Level 0 processing version IMAGES = 60 / Images in odometer accumulation PKT_Q_0 = 30720 / Packets with no errors PKT_Q_1 = 0 / Packets with 1 error corrected PKT_Q_2 = 0 / Packets with uncorrected errors PKT_Q_3 = 0 / Packets missing TIMEQUAL= 0 / Time tag quality DLT_TIME= 0.0018761158 / UT(smooth) - UTC, sec TIM_ACC = 0.0019996951 / Time source accuracy, sec TIMOFACC= '2001-10-17T15:58:14.998' / Time of accuracy determination SPCRFTID= '07Eh ' / Spacecraft ID COMMENT *****IMAGE GROUP***** COMMENT *****PIXELS GROUP***** PRTYERR1= 0 / Pixel Parity Error Count PRTYERR2= 0 / Pixel Parity Error Count MISS_LIN= 0 / Missing Line Count COMMENT *****END OF PRIMARY HEADER***** END
Kijk naar de woorden in bold... ;)
Dit is dus de image file met dit in de header zoals ik hem gehaald heb van:
http://sxi2.ngdc.noaa.gov/archive/months/10/17/MCPOD_20011017_150000000_AA_12.FTS
Naja ik weet er eigenlijk ook geen bal van. Maar zit er niet een klein planeetje iets links, beneden van het midden...
Ach naja, zal wel geen bal zijn...
(http://sohowww.nascom.nasa.gov/data/LATEST/current_eit_284small.gif)