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griffinfoster / shapelets

python-based shapelet decomposition package
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convert image domain shapelet to visibilities #7

Closed griffinfoster closed 9 years ago

griffinfoster commented 9 years ago

After a source has been decomposed into shapelet components in the image domain, they should be convertable to uv-domain visibilities for including in measurements sets. This requires:

-metadata (supplied or from FITS header) on the pixel resolution, and image centre (RA,Dec). we will make a flat field approximation for a source. -image-domain to uv-domain shapelet conversion functions -I/O interface to measurement set to add or overwrite visibilities to data columns with phase rotation -script to apply shapelet models to a measurement set

griffinfoster commented 9 years ago

This is now working without accounting for polarization or bandpass/spectral index effects. These are more complicated problems that will require some thinking about. These issues of course hint towards fitting in the uv domain instead.