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Дата индексирования: Sat Dec 22 20:11:04 2007
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FITS binary table files (for MIDI)

General structure

  1. Primary Header 
    	RA    =   245.8521    / coordinate in degrees!
	HIERARCH ESO DET DIT               =  0.04 /int time in seconds!
	HIERARCH ESO INS CAM NAME = 'FIELD'!
	HIERARCH ESO ISS CHOP FREQ = 1.0!
	HIERARCH ESO DET NRTS MODE = 'OBS\_FRINGE\_TRACK\_DISPERSED'!
  2. First Extension (Table) (INS\_DESCRIPTION)! 
    3. 	Table Header!
	Table Data!
  3. 2nd Extension Table (INS_TRAIN)
  4. ARRAY_DESCRIPTION
  5. ARRAY_GEOMETRY
  6. OPTICAL_TRAIN
  7. IMAGING_DETECTOR
  8. IMAGING_DATA
  9. SCAN_SETUP
MIDI raw observations are broken up into multiple files of about 100 MB, each with its own Primary Header, IMAGING_DETECTOR, IMAGING_DATA... with file names:

MIDI.START_UT.fits

Inside of EWS most programs accept multiple files as a single blank separated character string:

midiPipe,'outtag'," file1.fits file2.fits file3.fits",mask= maskfile.fits

A handy way to read FITS headers on UNIX machines is:

fold filename | more

In EWS:

header = oirGetPriHead(filename) & print,head camera = oirGetKey(filename,'CAM NAME') & print,camera

Please look in the UserGuide to EWS for short descriptions of the various utilities.