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:

beam : array

Circular beam profile b(theta).

theta : array

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

lmax : integer

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

Returns:

bl : array

Beam window function b(l).