  In a previous article we suggested a method to overcome the diffraction limit
behind a telescope. We refer to theory and recent numerical simulations, and
test whether it is indeed possible to use photon amplification to enhance the
angular resolution of a telescope or a microscope beyond the diffraction limit.
An essential addition is the proposal to select events with above-average ratio
of stimulated to spontaneous photons. We find that the diffraction limit of a
telescope is surpassed by a factor ten for an amplifier gain of 200, if the
analysis is restricted to a tenth of the incoming astronomical photons. A gain
of 70 is sufficient with a hundredth of the photons.
