MIDI FITS binary table files

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'

   etc.

2. First Extension (Table) (INS_DESCRIPTION)

   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.<date>T<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,header
  camera = oirGetKey(filename,'CAM NAME') & print,camera

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

OIFITS format for visibility files