[daip] Fwd: problem with VLBACALA

[Josh Winn]

Dear Designated AIP:

Please disregard my previous message.  The problem was that I
had not run VLBAMCAL.  I'm sorry if I have wasted any of your time.

Best regards,

Josh Winn

Begin forwarded message:

> From: Josh Winn <jwinn at space.mit.edu>
> Date: January 9, 2007 5:12:19 PM EST
> To: daip at nrao.edu
> Subject: problem with VLBACALA
>
> Dear Designated AIP:
>
> I'm having trouble calibrating the data for HSA project BW083A,
> continuum imaging at 22 GHz of a gravitational lens, with the
> VLBA+Y27+GBT.
>
> I downloaded the data from the archive and read it into AIPS with
> FITLD.  There were 36 files to read, and they were not named in
> any obvious way, but eventually I figured out that 18 of them
> corresponded to the first correlation pass, and 18 to the second
> correlation pass.  I read in each group of 18 separately, to make
> two different multi-source files.
>
> Then I started with one of them, and ran VLBAFIX, which took  
> several hours
> (much longer than usual), most of that time spent with MSORT.
> Nevertheless the process seemed to go OK.
>
> When I ran VLBACALA, ACCOR seemed to run OK but then
> I got the following error message with APCAL:
>
> localh> APCAL1: Task APCAL  (release of 31DEC06) begins
> localh> APCAL1: Writing SN table  2
> localh> APCAL1: GETGC: PARAMETER MAXVAL TOO SMALL: CONTACT AIPS ADMIN
> localh> APCAL1: GCVAL: ERROR  3 LOADING GC TABLE
> localh> APCAL1: AMPCAL: NO GAIN FOR ANT:   1 POL: 1 IF:    1
> localh> APCAL1: Purports to die of UNNATURAL causes
>
> I have attached the offending GC table.
>
> Obviously this prevents me from proceeding with further
> calibration.  Do you have any advice?
>
> Thanks in advance,
>
> Josh Winn
>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: BW083A_GC
Type: application/octet-stream
Size: 1072024 bytes
Desc: not available
URL: <http://listmgr.nrao.edu/pipermail/daip/attachments/20070110/53ab72b1/attachment.obj>
-------------- next part --------------