[daip] FITLD broken?

[Amy Mioduszewski]

Yea, Eric made some changes.  Point me at the data you are using.  Although I 
cannot promise too much since I am taking Thurs/Friday off.

Amy

Adam Deller wrote:
> Hi Amy,
> 
> Running from version 'NEW' works.  Running from 'TST' does not.  I
> notice they have different adverbs, so obviously some code surgery has
> been done somewhere.
> 
> Cheers,
> Adam
> 
> On Wed, Jun 16, 2010 at 9:22 AM, Amy Mioduszewski <amiodusz at nrao.edu> wrote:
>> Ack, and Eric isn't here.  Can you test it in version 'new'?
>>
>> Thanks!
>>
>> Amy
>>
>> Adam Deller wrote:
>>> Hi,
>>>
>>> There is something very strange going on with FITLD for VLBA data in
>>> AIPS - it is scrambling the SU table for some files (but not all).  I
>>> have checked out this particular file (you can see it at
>>>
>>> /home/marathon2/data/1023+0038/bd141a/BD141A_UG_HPOL4IF8MHZ16CH_1.6515GHZ00)
>>> using fv and see a sensible looking SU table.  However, as soon as I
>>> load it into AIPS with FITLD the SU table reads:
>>>
>>>       1    5.0000000000D+05    1.4176255806D+02     3.9039125519D+01
>>>  2.0000000000D+03    1.0792773795D+02    4.5395855014D+01
>>>       2    5.0000000000D+05    1.5612327792D+02    -8.8208229444D-01
>>>  2.0000000000D+03    1.3016422419D+02    7.9956464878D+00
>>>       3    5.0000000000D+05    1.5591154583D+02     4.0463333333D-01
>>>  2.0000000000D+03    1.2979993496D+02    9.2488222431D+00
>>>       4    5.0000000000D+05    1.5271527786D+02    -2.0054371833D+00
>>>  2.0000000000D+03    1.2689149360D+02    6.4704735040D+00
>>>
>>> where the columns are channel bandwidth, RA epoch (deg), Dec epoch
>>> (deg), Epoch (years), RA apparent (deg) and Dec apparent (deg).  You
>>> can see that the apparent source positions have changed by many
>>> degrees - something is amiss.  I tried running FITLD from 31DEC09 but
>>> got the same result.  This is data from the hardware correlator from
>>> late 2008.
>>>
>>> Cheers,
>>> Adam
>>>
>>
> 
> 
>