From jcirtain@head.cfa.harvard.edu Wed Jun  8 17:58:19 2005
Date: Wed, 8 Jun 2005 17:58:18 -0400 (EDT)
From: Jonathan Cirtain <jcirtain@head.cfa.harvard.edu>
To: Mark Weber <mweber@head.cfa.harvard.edu>
Cc: Leon Golub <golub@head.cfa.harvard.edu>, Ed Deluca <deluca@head.cfa.harvard.edu>, Jay Bookbinder <jbookbinder@cfa.harvard.edu>, Peter Cheimets <pcheimets@cfa.harvard.edu>, mario cosmo <mcosmo@cfa.harvard.edu>, Jason Scott <jscott@head.cfa.harvard.edu>
Subject: E2E 20050608 Shift-A Science Report.

Shift A began by working out the VLI focus. It was determined by analysis
that the changes in focus position had little effect on the images. It was
concluded the the VLI has a very large depth of focus. It also appears
that the co-alignment of the VLI is well with the one arc minute
requirement. (It is around 35 arc seconds.)

We were also able to go back to section 7 of the procedure and made a
number of radial scans at various focus positions. We have completed the
PSFs for these positions.

_____________________________________________________________________________
Dr. Jonathan W. Cirtain                 |60 Garden St.
High Energy Astrophysics Division       |Mail Stop 58 
Center For Astrophysics                 |Cambridge MA, 02138
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