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imProc.psf
Alexander Krassilchtchikov edited this page Dec 4, 2023
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Functions for PSF measurement in astronomical images, e.g. contained in AstroImage objects.
- imProc.psf.populatePSF - Select PSF stars, construct a PSF and populate the PSF property of the input AstroImage
- imProc.psf.constructPSF - Select PSF stars and construct a PSF for an AstroImage (obsoleted by imProc.psf.populatePSF)
- imProc.psf.fwhm - Measure the FWHM from the PSF in an AstroImage and write it in its Header (NB: requires WCS to be filled for proper dimension!)
- imProc.psf.measureFWHM - Estimate image seeing or focus state
- imProc.psf.psf2cube - Construct a cube of PSF stamps from AstroImage
- imProc.psf.selectPsfStars - Select PSF stars from AstroCatalog
% measure PSF from the sky image contained in an AstroImage object
% and populate the PSF property of the input AstroImage:
AI = imProc.psf.populatePSF(AI);
% do the same with the obsoleted method imProc.psf.constructPSF:
AI = imProc.psf.populatePSF(AI, 'Method','old');
% Measure FWHMs of the PSFs contained in an AstroImage stack "Coadd",
% whose headers already contain correct values of 'CD1_1' and 'CD2_2' WCS keywords
% and write the measured FWHM values into the headers as 'FWHM' keywords
imProc.psf.fwhm(Coadd);
AstroPack/MAATv2 - MATLAB Astronomy & Astrophysics Toolbox
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