spheroidal_function

ska_sdp_func_python.image.cleaners.spheroidal_function(vnu)[source]

Evaluates the Prolate Spheroidal Wavefunction.

m=6, alpha = 1 from Schwab, Indirect Imaging (1984). This is one factor in the basis function.

Parameters:

vnu – Distance to edge

Returns:

PSWF value (float)