I would have a red dot finder question, I know it's not an eyepiece, but I did not find a red dot finder subforum.
Soo, my old red dot finder just refuses to work anymore. It's one from a 5-inch Heritage dobsonian, and I've been using it for my 8-
So, I saw that my local astro shop has two options: the Celestron Star Pointer Pro and the Baader Sky Surfer 3 (a bit more pricey).
My questions would be: 1. Do I see it well that both of them have the same type of clamps that can be attached to a 5dob Heritage, if I take them off their metallic mounts?
2. How could I mount a red dot finder on the tube of the 8dob Celestron without stuffing the magnets between the clampsa and thus risking to deteriorate the casing of the new finder as well? I do not want to bore holes into the tube, and I see that the mounts of both finders have some holes for screws which the 8dob tube just doesn't have. Any easy suggestions, pls?