- #1
Tyrion101
- 166
- 2
I'm building a telescope and one of the more important choices I'm making is what focal length to make the mirror, my understanding is the longer the focal length the closer you see far away stuff, but the field of view diminishes a bunch. I've seen both long tube dobsonians and short tube ones. (This is what I'm building) I'm wondering what I'd see from one vs the other? (Assuming both are the same diameter)