But! I can make more than one exposure. In fact I can make hundreds over many nights.
But! I can make more than one exposure. In fact I can make hundreds over many nights.
Now to get any sort of useable image with this sort of weak signal I need to make long exposures, but I can’t just make them arbitrarily long, as sensors have a limit of how many photons per pixel they can count.
Now to get any sort of useable image with this sort of weak signal I need to make long exposures, but I can’t just make them arbitrarily long, as sensors have a limit of how many photons per pixel they can count.