Angular power spectrum of the main foreground contributions as estimated using the FFP6 simulations. We plot the diffuse Galactic emission (blue), clustered CIB (green) and point source (cyan) contributions, as well as the tSZ signal (red). The solid and dotted lines correspond to the NILC F/L and to the NILC-MILCA F/L cross-power spectra, respectively. For illustration we also show the Planck instrumental noise auto-power spectrum (dashed black line) in the MILCA Compton parameter map.