I have a question regarding these calculations. When figuring out the limitations for a
scope with an obstructions, I've heard that if you subtract the diameter of the
obstruction from the overall scope aperature, you can figure out the resolving
capabilities of the scope.
How does this factor with limiting magnitude? On the face of it, it makes sense, but
there's a part of me that makes me wonder if having diffraction problems with the airy
disks would reduce the ability to see the fainter stars.
Thanks,
Stephen
Received on Tue Mar 22 15:13:56 2005