Basic Information on gildas

Task: gildas
Purpose: Conversion from MIRIAD to uv FITS for GILDAS convention
Categories: data transfer

GILDAS is a MIRIAD task, which converts Miriad uv files to 
FITS following the GILDAS convention for the headers
of spectral line features. In this testing version,
the cross polarization visibilities are skipped and
the parallel polarizations are degenerated to Stokes I. 
References:
  For a description of the FITS standard, see
  http://fits.gsfc.nasa.gov/fits_home.html
  For a description of Gildas, see
  http://www.iram.fr/IRAMFR/GILDAS/

Key: in
Name of the input file (either a MIRIAD file name). 
No default.

Key: out
Name of the output file (UVFITS file name for GILDAS or AIPS).
There is no default.

Key: line
Line type of the output, when op=uvout. This is of the form:

  linetype,nchan,start,width,step

"Linetype" is either "channel", "wide" or "velocity". "Nchan" is
the number of channels in the output.

Key: select
Normal uv selection.

Key: linename
The name of the spectral line transition; maximum length
is 12; default is empty. Usage: linename = 'H2O'

Key: options
These options applies for op=uvin only.
  compress Store the data in compressed uv format.
  lefty    Assume that the UVFITS antenna table uses a
           left-handed coordinate system (rather than the
           more normal right-handed system).
  varwt    The visibility weight in the UVFITS file should
           be interpretted as the reciprocal of the noise
           variance on that visibility.

  nocal    Do not apply the gains table to the data.
  nopass   Do not apply the bandpass table correctsions
           to the data.

  nod2     Use the conventions of NOD2 UVFITS files.
  aips     Output for AIPS UVFIT; default is for GILDAS. 

• FITS to GILDAS