From analysts@aoc.nrao.edu Wed Jan 24 14:54:19 1996
Date: Wed, 24 Jan 1996 14:54:15 -0700
From: Data Analysts <analysts@aoc.nrao.edu>
To: vlbiobs@aoc.nrao.edu
Subject: BB45B notes
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>From jconway@oso.chalmers.se Wed Jan 24 13:44:56 1996
From: John Conway <jconway@oso.chalmers.se>
Subject: BB45B notes
To: analysts@nrao.edu
Date: Wed, 24 Jan 96 21:40:27 MET
Cc: benz@astro.phys.ethz.ch
Mailer: Elm [revision: 70.85]
Content-Length: 1027
X-Lines: 28
Status: RO

Hi,

  I hope there are no errors in this version. Just a few notes
about the nonstandard aspects of this experiment.


1) We are observing two radio stars which are part of a binary,
both fit in the VLBA and phased VLA beams so there is a single
pointing position middway between the two stars. 

At correlation time time two passes must be made to correlate 
at the two star positions, I assume that I will get the normal
request for correlator parameters and we can ensure the right
coordinates are supplied at that time.

2) In order to make sure that both stars fit in the synthesisied 
VLA beam in will be neccessary to remove the outer 4 VLA antennas
of the N arm in this CnB configuration.

3) We would prefer to have 10 sec averages from our VLA only data
so we can more carefully edit the data which has lots of
slews in it.

4) I think we prefer the 128-4-2 recording mode with 133ips 
tape speed (we don't care about cross polarisation so these
diffculties with that mode are not a problem for us).

         John.


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