INES Extension FITS Header

Basic FITS Keywords

XTENSION
BITPIX
NAXIS
NAXIS1
NAXIS2
PCOUNT
GCOUNT
TFIELDS
TFORM1...4
TTYPE1...4
TUNIT1...4
TDISP1...4
END

The FILENAME Keyword

The "FILENAME" keyword holds the name of the file, coded as:

<camera><image><dispersion><aperture>.FITS

where

• <camera> is the three letter camera name (SWP, LWP, LWR)
• <image> is a 5 digit image number
• <dispersion> is a single letter identifying the dispersion: L (low), H (high) or R (high resampled to low-dispersion)
• <aperture> is a single letter identifying the (extracted) aperture: L (large) or S (small)

Example of INES Extension FITS Header

 
 XTENSION= 'BINTABLE'           /Written by IDL:   1-Feb-1998 02:00:00.00
 BITPIX  =                    8 /
 NAXIS   =                    2 /Binary table
 NAXIS1  =                   14 /Number of bytes per row
 NAXIS2  =                  562 /Number of rows
 PCOUNT  =                    0 /Random parameter count
 GCOUNT  =                    1 /Group count
 TFIELDS =                    4 /Number of columns
 TFORM1  = '1E      '           /Real*4 (floating point)
 TTYPE1  = 'WAVELENGTH'         /Label for column 1
 TUNIT1  = 'ANGSTROM'           /Units of column 1
 TDISP1  = 'F10.3   '           /Display format for column 1
 TFORM2  = '1E      '           /Real*4 (floating point)
 TTYPE2  = 'FLUX    '           /Label for column 2
 TUNIT2  = 'ERG/CM2/S/A'        /Units of column 2
 TDISP2  = 'E15.7   '           /Display format for column 2
 TFORM3  = '1E      '           /Real*4 (floating point)
 TTYPE3  = 'SIGMA   '           /Label for column 3
 TUNIT3  = 'ERG/CM2/S/A'        /Units of column 3
 TDISP3  = 'E15.7   '           /Display format for column 3
 TFORM4  = '1I      '           /Integer*2 (short integer)
 TTYPE4  = 'QUALITY '           /Label for column 4
 TUNIT4  = '        '           /Units of column 4
 TDISP4  = 'I7      '           /Display format for column 4
 FILENAME= 'LWP31755RL.FITS'    /Filename(camera)(number)(disp)(aper).FITS
 END