jinc

jwst.ami.analyticnrm2.jinc(x, y, d, lam, pitch, offx=0.0, offy=0.0)

Compute 2d Jinc for given coordinates.

Parameters:

x, yfloat, float

Input coordinates

dfloat

Hole diameter

lamfloat

Wavelength

pitchfloat

Sampling pitch in radians in image plane

offx, offyfloat, float

Offsets from image center in detector pixels

Returns:

jinc_2dfloat array

2d jinc at the given coordinates, with NaNs replaced by pi/4.