[daip] DBCON on many files

[Walter Brisken]

Hi DAIP,

In a VLBA project we are amassing integration time for a filler project 
over many separate observations.  The final step in data processing before 
imaging is to concatenate all of the epochs with DBCON.  This is proving 
to take an increasingly long time with each epoch.  What I am doing is 
running it N-1 times for N projects and setting INNAME/INCLASS to the 
DBCON output from previous merges and IN2NAME/IN2CLASS to the next 
unmerged file.  Some questions:

1. Is there any task other than DBCON that could be used for this? 
Antenna tables are subtly different each epoch so each has to be in 
separate subarray.

2. Would it be better to run DBCON with INNAME/INCLASS and 
IN2NAME/IN2CLASS swapped?

3. Would a heirachical merge be more efficient than a sequential merge?

 	Thanks,

 	Walter

-- 
-------------------------
Walter Brisken
Director
Long Baseline Observatory
(575)-835-7133 (office)
(505)-234-5912 (cell)