[daip] DELZN bookkeeping.

[Craig Walker]

The DELZN output file labels antennas by antenna number.  CLCOR reads 
that file, often to correct data in a different data set.  It uses the 
antenna number to assign the corrections to antennas.  VLBA data sets do 
not all have the same antenna number assignments.  A common issue is 
that MK is either antenna 6 or 10, depending on when it entered the 
array.  The observations my summer student is processing has MK as 
antenna 6 in the DELZN data set and antenna 10 in the main target source 
data set.  Of course, this means that NL, OV, PT, and SC also have 
different antenna number assignments.  Therefore the corrections get 
assigned to the wrong antennas.  There needs to be a more secure method 
of assigning the corrections to antennas, perhaps by antenna name rather 
than number.

Cheers,

Craig

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     R. Craig Walker            Array Operations Center
     cwalker at nrao.edu           National Radio Astronomy Observatory
     Phone  505 835 7247        P. O. Box O
     Fax    505 835 7027        Socorro NM 87801   USA
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