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LAS\FITS READ File[.fits]
LAS\FITS WRITE File[.fits] /MODE SPECTRUM|INDEX [/BITS Nbits]
Either READ the File.fits FITS file to the CLASS internal data format.
Please note that not all FITS files may be read by CLASS, and some head-
er information might be incomplete when doing so. Alternatively, FITS
cubes can be converted to the Gildas Data Format by the command VEC-
TOR\FITS, and then imported as a Class index by the command ANALYSE\LMV.
Or WRITE the File.fits FITS file from the CLASS internal data format.
/MODE is a mandatory option which can take the following values as argu-
SPECTRUM a simple FITS file is written from the current spectrum in
memory is written. The number of bits per intensity value
used when writing the FITS file may be controlled through the
/BITS optional argument. It can be: 16 or I*2 (2 bytes inte-
ger), 32 or I*4 (4 bytes integer) or -32 or R*4 (4 bytes re-
al). Default is 32.
INDEX a FITS BINTABLE is written from all the spectra in current
index. The USER MUST make sure that all index spectra are
consistent (same source, same line, same frequency setup,
...). The intensity values (and irregularly sampled X axis
values, if any) are always written as 4 bytes real.
The default mode and number of bits can also be specified through the
SET FITS MODE SPECTRUM|INDEX
SET FITS BITS Nbits
The option /CHECK will print the FITS HEADER on the terminal.