I need this information for a simulation I am working on that involves optical photon detectors. Specifically, I need a rough figure for how many photons a photon detector would register per second if I were to place it in ambient light from the sun. I realize that this number depends on the bandwidth of the detector and its quantum efficiency at different wavelengths, but lets assume I have tight bandwidth in the green part of the spectrum (say less than 100nm) with a very sharp roll off. Would the detector saturate? Or is the amount of ambient photons low enough to register a good number? I'm thinking I may be able to calculate a rough number based on how much radiation the sun shines on the earth over the bandwidth I need. I probably will try this later, but I figured I would ask to get a number I can compare with.