[daip] IMFIT/JMFIT/SAD question

[Eric Greisen]

Hanno Spreeuw wrote:
> Hello,
> 
> The tasks IMFIT/JMFIT/SAD can report the deconvolved source shape 
> parameters, so the fitted semi-major and semi-minor axis and position 
> angle are deconvolved from the clean beam.
> I am having a hard time deriving the formulae for deconvolving these 
> parameters from the clean beam from scratch. I tried Fourier 
> transforming the convolution of the two Gaussians using the convolution 
> theorem and then do an inverse FT, but that is pretty cumbersome.
> I could not find the formulae on the web, but perhaps you could send me 
> a link? Or the source code?

Source code is sent with all copies of AIPS.  The subroutine name is 
DECONV.FOR.  For convenience I attach it.

Eric Greisen
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