[daip] Fwd: Re: BDF to FITS data conversion through AIPS++

Honglin Ye hye at nrao.edu
Mon Jul 2 12:11:52 EDT 2012


> FYI
>
>
> -------- Original Message --------
> Subject: 	Re: BDF to FITS data conversion through AIPS++
> Date: 	Thu, 28 Jun 2012 09:52:27 -0600
> From: 	Eric Greisen <egreisen at nrao.edu>
> Organization: 	National Radio Astronomy Observatory
> To: 	Rahman, Nurur <nrahman at uj.ac.za>
> CC: 	Frazer Owen <fowen at aoc.nrao.edu>, DAIP at nrao.edu, jkern at nrao.edu
>
>
>
> Rahman, Nurur wrote:
>> Hi Eric,
>>
>> when the archived VLA data is converted from BDF to fits via AIPS++,
>> that
>> there are two persistent problems:
>>
>> 1. The 'Y' coordinate of antenna position 'XYZ' appears '+' giving a
>> positive
>> Longitude for the VLA antennas
>>
>> 2. When AIPS output fits file is converted to a MIRIAD file (using usual
>> MIRIAD command such as 'fits') and run in the MIRIAD 'listobs' task, it
>> gives the following error message:
>>
>> ### Fatal Error [listobs]:  Variable ut not found, in UVGETVR
>>
>>
>> I just wanted to bring these two issues to your attention.
>> Nurur
>
> When were these data written through CASA?  I just downloaded data from
> the archive and the ANtenna file information was correct.
>
> Eric Greisen
>
>
>
>
>
Hi, Jeff,
The reported problem in BDF->fits->MIRIAD has no CASA involvement.
CASA importuvfits/exportuvfits handles vla antenna XYZ correctly.

Honglin




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