healpy.sphtfunc.beam2bl¶

healpy.sphtfunc.beam2bl(beam, theta, lmax)

Computes a transfer (or window) function b(l) in spherical harmonic space from its circular beam profile b(theta) in real space.

Parameters
beamarray

Circular beam profile b(theta).

thetaarray

Radius at which the beam profile is given. Has to be given in radians with same size as beam.

lmaxinteger

Maximum multipole moment at which to compute b(l).

Returns
blarray

Beam window function b(l).