gaussbeam
gaussbeam computes the l space window function of a gaussian beam of FWHM Fwhm. For a sky of underlying power spectrum C(l) observed with beam of given FWHM, the measured power spectrum will bewhere B(l) is given by gaussbeam(Fwhm,Lmax). The polarization beam is also provided (when Dim > 1) assuming a perfectly co-polarized beam (eg, Challinor et al 2000, astro-ph/0008228)
beam = gaussbeam(5.,1200) |
beam contains the window function in {0,...,1200} of a gaussian beam of fwhm 5 arcmin
Eric Hivon 2005-08-31