Hello all, and thanks in advance.
I have a Celestron 8SE with the standard one-arm mount.
I'm looking to photograph M42 (Orion Nebula). It will be my first attempt!
I'm aware of the field rotation issue that comes along with alt-az mounts, so I'm going to try to get a lot of shorter exposures, and then use DSS for stacking.
The setup is:
Canon 5D Mk II (modified)
Celestron f/6.3 Reducer
I'm planning on locking the mirror for each frame, and taking as many shots as I can get.
I think I'm just about ready, but I have a question about exposure times:
Given this setup, what is the ideal exposure time before I get blurring/field rotation issues? A best guess is fine, or if there's a tool that can help me calculate this, that would be even better!
Edited by JeffreyHorne, 19 December 2018 - 12:27 AM.