Image fitting with beam deconvolved images

[YuHsuan-Hwang]

Support image fitting with beam deconvolved images.

Requirement document:
https://docs.google.com/document/d/1E9kL7FOhVtkDDit8VIYle61tU5PzSYXjnLpxZBCHliY/edit?usp=sharing

[markccchiang]

Checking with the original fit function in the CASA imfit. It seems the deconvolved fit results are calculated from the fit results from the raw image pixel data (see ImageFitter.tcc from the CASA code). So we don't need to generate a beam-deconvolved image and do another fit.

[kswang1029]

Checking with the original fit function in the CASA imfit. It seems the deconvolved fit results are calculated from the fit results from the raw image pixel data (see ImageFitter.tcc from the CASA code). So we don't need to generate a beam-deconvolved image and do another fit.

could you provide an outline a bit on how it works?

[markccchiang]

Checking with the original fit function in the CASA imfit. It seems the deconvolved fit results are calculated from the fit results from the raw image pixel data (see ImageFitter.tcc from the CASA code). So we don't need to generate a beam-deconvolved image and do another fit.

could you provide an outline a bit on how it works?

This code is a little bit complicated for me. Basically, it is done in the _setDeconvolvedSizes() method from ImageFitter.tcc. It takes the image beam information and uses the casa::GaussianDeconvolver::deconvolve method to do the deconvolution.