Previous: FITS READ
LAS\FITS WRITE File[.fits] /MODE SPECTRUM|INDEX [/BITS Nbits]
WRITE the File.fits FITS file from the CLASS Data Format. The resulting
FITS file is a binary table (BINTABLE) with columns of parameters and
channel intensities (dedicated CLASS-FITS format, see CLASS documenta-
tion for details). In order to produce a data cube, the commands TABLE
and XY_MAP must be used first. Then the resulting GDF cube can be ex-
ported with the command V\FITS.
/MODE is a mandatory option which can take the following values as argu-
SPECTRUM a simple FITS file is written from the current R 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 integer), 32
or I*4 (4 bytes integer) or -32 or R*4 (4 bytes real). Default
INDEX a FITS BINTABLE is written from all the spectra in current in-
dex. The user MUST make sure that all index spectra are consis-
tent (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.