alter_alm*
call alter_alm*( nsmax, nlmax, nmmax, fwhm_arcmin, alm_TGC[, beam_file, window] )
Alters scalar and tensorof a map with Nside=64,
by multiplying them by the beam window function of a gaussian beam with FWHM = 5 arcmin.
Version 3.50, 2018-12-10