[evlatests] Very strange baseline error

Bill Cotton bcotton at nrao.edu
Fri Jun 14 16:07:36 EDT 2013


   The problem was in BDFIn computing the Lorentz contraction factor
for the Earth's motion and only became non trivial for very special
celestial positions.  This has been fixed and the updated version
should be distributed in the morning.

-Bill
> On Thu, 13 Jun 2013, Rick Perley wrote:
>
>>    The 30-hour flux densities run demonstrated a possibly unique
>> problem with baselines:  The first source observed (J0217+7349) had
>> baselines scaled over 1000 times too large!  The source was observed
>> multiple times during the 30 hours -- for each scan, the same baseline
>> scaling error occurred.  No other source suffered this problem.  (And
>> UVFIX repaired the problem).  I dismissed this as a 'one-of' issue.
>>
>>    But it isn't.  The follow-up 'Flux Redux' run suffers exactly the
>> same problem, with the same source.  It was also the first object in the
>> file.
>>
>>    Any ideas here?
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