ACT (ACTPol) Data Products - 2016 Beams
The beam transform is the harmonic transform (on the sphere) of the azimuthally averaged beam. The Fourier space window functions is obtained by squaring the beam transform. The calibration pivot is at ell = 1400. The format of the ell-space beam transforms is:
B_ell is the harmonic transform of the real space beam, assumed to be azimuthally symmetric. The angular power spectrum "window function"
due to the instrument point spread function is proportional to the square of B_ell.
where (a1, a2, ...) are drawn from the normal distribution with mean 0 and variance 1.
The suffixes in use here are: