[mmaimcal] Re: mathematics of calculating the PSF (fwd)

[Mark Holdaway]

Prescription:  take the primary beam, convolve it with itself,
multiply that by the PSF, optimize the effective PSF you've just
created.


---------- Forwarded message ----------
Date: Wed, 18 Apr 2001 09:59:07 -0700
From: David Woody <dwoody at ovro.caltech.edu>
To: Mark Holdaway <mholdawa at nrao.edu>
Subject: Re: mathematics of calculating the PSF

Hi Mark

I have come up with a formulation for the off-axis PSF
based upon the concept of measurement orthogonality.
It does not rely on the usual image processing steps,
but produces an PSF like what you described, i.e.
the raw FT of the delta function UV samples multiplied by
PB(p)*PB(p+dp)
where p is the position of the point source and dp is the
offset from this position and also the sky coordinate for the
raw FT.

So I think we have a common result and can proceed.

Cheers
David
****************************************
| David Woody
| Assistant Director of Instrumentation
| Owens Valley Radio Observatory
| P.O. Box 968, 100 Leighton Lane
| Big Pine, CA 93513, USA
| Phone 760-938-2075ext111, FAX 760-938-2075
|dwoody at caltech.edu
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