The Fourier Transform of the sampling distribution in synthesis imaging
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(1) |
also called the Synthesized Beam. It is called a ``beam'' by way of analogy with the Dirty Map
where denotes Convolution. Here, is the intensity which would be observed for an extended source by an
antenna with response pattern ,
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(3) |
The dirty beam is often a complicated function. In order to avoid introducing any high spatial frequency features when
CLEANing, an elliptical Gaussian is usually fit to the dirty beam, producing a CLEAN
Beam which is Convolved with the final iteration.
See also CLEAN Algorithm, CLEAN Map, Dirty Map
© 1996-9 Eric W. Weisstein
1999-05-24