[daip] Inconsistent coordinates in FILLM

[Andy Biggs]

Hi Eric,

The data I'm looking at now is taken from program AX004 and the file 
from 8 April shows the effect well.

DSORC seems to work - thanks. I self-calibrate everything in the end 
anyway, so these tiny coordinate changes don't matter.

Andy

On 25/05/17 16:23, Eric Greisen wrote:
> On 05/24/2017 10:14 AM, Andy Biggs wrote:
>> Hi there,
>>
>> I've just loaded many archival VLA datasets and for some sources, FILLM
>> reports every time that the coordinates in different scans are
>> inconsistent and then renames the source by appending an integer. The
>> coordinates seem to differ by only a few mas. Can something be done to
>> correct this and thus cause each scan to have the same source name?
>>
>> Thanks,
>>
>> Andy
>>
>
>
> This is strange since we have not had reports like this about FILLM and
> - so far as I know - it has not changed in a very long time.  It would
> suggest that for some reason the recorded coordinates really do change.
>
> Can you send me the project code for one such case?
>
> The task DSORC will let you renumber the secondary sources with their
> primary number (up to 10 at a time).
>
> Eric Greisen
>

-- 

Andy Biggs
ARC Astronomer, ALMA Regional Centre
European Southern Observatory
Karl-Schwarzschild-Straße 2
D-85748 Garching
Germany

tel. +49 89 3200 6471
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