create_pswf_convolutionfunction

create_pswf_convolutionfunction(im, oversampling=127, support=8, polarisation_frame=None)

Fill an Anti-Aliasing filter into a ConvolutionFunction

Fill the Prolate Spheroidal Wave Function into a GriData with the specified oversampling. Only the inner non-zero part is retained

Also returns the griddata correction function as an image

Parameters:

• im – Image template

• oversampling – Oversampling of the convolution function in uv space

Returns:

griddata correction Image, griddata kernel as ConvolutionFunction