[daip] accor: source id

[Leonia Kogan]

Lincoln,

>ACCOR in DEC01 writes an SN table with source_id = 1 for all solution
> intervals, no matter what source is observed, when the SOLINT is set to
> a small number, (in this case 2.5 minutes - which is much shorter
> than the length of a scan)

Yes you are right. Even more: source_id = 1 for any SOLINT.NE.-1.

ACCOR corrects the ampltude on the basis of mean of the autocorrelation 
cpectrum which actually does not depend on the observed source.
That's why ACCOR avarages the signan inside of the SOLINT not paying attention 
on the observed source. SOLINT can be bigger than scan (the default SOLINT=0 
=> SOLINT=60min) and so can include averaging of several observed sources. 
At this case ACCOR does not know which SOURCE_ID to select.
I repeat again ACCOR does not read index table (if SOLINT.NE-1) and so 
does not make any difference of the observed sources.

We can continue the disusion tomorrow if you are in AOC yet.

Leonia
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>From owner-daip at kochab.cv.nrao.edu Sat Jun  2 18:54 MDT 2001
Date: Sat, 2 Jun 2001 20:52:32 -0400 (EDT)
From: Lincoln Greenhill <lincoln at rgalp8.harvard.edu>
To: aipgripe at zia.aoc.NRAO.EDU, aipsmail at cv3.cv.nrao.edu, daip at cv3.cv.nrao.edu,
        egreisen at cv3.cv.nrao.edu, pmurphy at cv3.cv.nrao.edu
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Subject: aips_gripe
{02-JUN-2001 20:43:41}
{rgalp8       UN-REGISTERED!!!!!!!}
{   24  31DEC01  DEC}
{lincoln greenhill}
{cfa}
{6174957194}
{ACCOR in DEC01 writes an SN table with source_id = 1 for all solution
 intervals, no matter what source is observed, when the SOLINT is set to
 a small number, (in this case 2.5 minutes - which is much shorter
 than the length of a scan).  We experienced this on the AOC
 computer rm251c-1.  It is also possible that solutions are written for times
 outside scan boundaries...but I am not absolutely sure of that
 claim at this moment.
  }
{ACCOR sets source-id=1 in output SN tbl despite what is actually observed.}
{greenhill at cfa.harvard.edu}
{ }


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