[daip] Re: small problem

[Eric Greisen]

ppalmer at oskar.uchicago.edu writes:
 > Eric,
 > 
 > I had noticed that the velocity convention in the header changes for
 > LSR (which I always use) to OPTICAL sometimes for no apparent reason.
 > That is, the original UV data header says
 > 
 > Vel type: RADIO   wrt LSR
 > 
 > but the images say:
 > 
 > Vel type: OPTICAL wrt YOU
 > 
 > I finally traced down where it occurs.  It is after I split out a
 > single channel to use for selfcal.  The UV data for that channel is
 > labelled OPTICAL.  Then when I copy the SN table to the line data
 > (labelled LSR) and split that, I get OPTICAL in the header.  
 > 
 > (When I split the line data to apply the CL table and FG table from the
 > channel 0 data, this does not happen.) 

SPLIT ignoreds the fact that it did not have a source table and tried
to use the source table info anyway.  Fixed it to leave this header
parameter alone for single source files.  If it still does not work,
let me know.

Thanks for following this up.

Eric Greisen