[daip] [JIRA] (CAS-5818) importuvfits sets dish diameters to 0 for 'EVLA' fits file imports.

[Eric Greisen]

On 01/26/2016 02:32 PM, David Mehringer (JIRA) wrote:
>
>      [ https://bugs.nrao.edu/browse/CAS-5818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=82642#comment-82642 ]
>
> David Mehringer commented on CAS-5818:
> --------------------------------------
>
> Eric,
> Just a heads up that AIPS appears to be writing zeros for EVLA dish diameters in uvfits AN tables.
>
>> importuvfits sets dish diameters to 0 for 'EVLA' fits file imports.
>> -------------------------------------------------------------------
>>
>>                  Key: CAS-5818
>>                  URL: https://bugs.nrao.edu/browse/CAS-5818
>>              Project: CASA
>>           Issue Type: Sub-task
>>             Reporter: Urvashi Rao Venkata
>>             Assignee: David Mehringer
>>             Priority: Minor
>>
>> When used on an EVLA fits file (written out from AIPS), the ANTENNA subtable in the resulting MS has dish diameters set to zero.
>> ( This is likely just 'EVLA' being left out of some telescope list in the code.  A few years ago, I had fixed a similar bug for importing GMRT uvfits datasets. )
>> Sample FITS file :  /lustre/sgneff/casa_Cen_lsc/cband/uvdata/CTR_CHI_TR2.RWYCP.2
>
>
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AIPS in principle does not invent parameter values when not provided 
them.  The incoming data lack antenna diameters or beam widths and so 
AIPS does not invent them and they are written with clearly incorrect
(or null) values.  Tasks that need an antenna diameter require the user 
to provide it - these 2 parameters are recent additions to the AN format 
and have little support in the community.

Eric Greisen