[evlatests] Very strange baseline error

[bcotton at nrao.edu]

Rick,

   Does your first source have a gonzo frequency offset?  This could
cause your problem and I don't see any other way to have what you 
describe happen.  Check the SU table.

-Bill 

Michael Rupen writes:
 > 
 > >
 > > I am assuming that by "baselines" you mean the u,v,w?  If so, then I was
 > > under the strong impression that those are not in the SDM but calculated
 > > in the fillers (e.g. BDF2AIPS, asdm2MS) from antenna positions, time, and
 > > position. Thus I guess the question is then how the filler got confused...
 > 
 > Steve is correct -- there are no uvw in the SDM.  It would be interesting
 > to load at least the first scan in this data set into CASA (I presume
 > Rick used BDF2AIPS) to see whether this is a BDF2AIPS-only problem.
 > 
 >            Michael
 > 
 > > 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?
 > >> _______________________________________________
 > >> evlatests mailing list
 > >> evlatests at listmgr.cv.nrao.edu
 > >> http://listmgr.cv.nrao.edu/mailman/listinfo/evlatests
 > >>
 > >
 > > -------------------------------------------------------------------------
 > > |:| Steven T. Myers                      |:|  Tenured Astronomer       |:|
 > > |:| National Radio Astronomy Observatory |:|  Ph:  (575) 835-7294      |:|
 > > |:| P.O. Box O, Socorro, NM 87801        |:|  FAX: (575) 835-7027      |:|
 > > |:| http://www.aoc.nrao.edu/~smyers      |:|  smyers at nrao.edu          |:|
 > > -------------------------------------------------------------------------
 > > _______________________________________________
 > > evlatests mailing list
 > > evlatests at listmgr.cv.nrao.edu
 > > http://listmgr.cv.nrao.edu/mailman/listinfo/evlatests
 > >
 > _______________________________________________
 > evlatests mailing list
 > evlatests at listmgr.cv.nrao.edu
 > http://listmgr.cv.nrao.edu/mailman/listinfo/evlatests