[daip] AIPS antenna table

[Eric Greisen]

Eric R. Keto wrote:
> Dear Eric:
> 
> About 6 or 7 years ago I wrote a program to write
> SMA data into AIPS format. And you were critically
> helpful in ironing out a few bugs. We have been
> using that program quite successfully. Now we find
> that we have a problem with the Antenna table
> and the newest version of AIPS.
> 
>>From some minor research into this, I see that there
> have been some changes to the Antenna table in
> the last year or so. Still, I am having a little trouble
> reverse-engineering the problem from an example
> of a new table.
> 
> Is there any available documentation on the changes
> that would help us update the format of our Antenna
> table?
> 
> Regards,
> 
> Eric Keto
A number of things were added but a translation on the fly routine was 
also added so the old format should be fine.  The one fly in that 
ointment is the routine that tries to recognize what antenna you are 
using so that we can check the handedness of the coordinates.  What 
antenna names are you using (and array name)?  The handedness of all 
arrays is now forced to RIGHT.

XYZHAND and FRAME were added as header keywords both 8 character.
Also NO_IF an integer giving the number of IFs.

Columns DIAMETER and BEAMFWHM were added.  The DIAMETER is a scalar for 
each antenna in meters.  The other has dimension NO_IF for each antenna 
and is in degrees/meter wavelength and is the FWHM of the single dish.
Note that these are not filled in by anyone yet.

Note that sending me the error messages would have been useful.

Eric Greisen