Sure - Here are the answers:
Also, if you don’t mind, could you educate me on a few things you mentioned that I probably need to understand?
1. Tilt: what is this and what impact does it have on imaging?
For imaging, tilt shows up as elongated stars across the image.
2. Catseye: Sounds like a useful device but I’ve never heard of it. Can you add a bit on it as well?
Catseye - the king of collimation tools and resources.
3. Motorized focus: With a smooth course/fine focuser, what is the benefit of a motorized one?
For visual and EAA, it doesn't help. For imaging, it autofocuses and compensates for thermal gradients in the imaging train and it compensates for filter to filter focusing variation. For automated imaging, it's a must.
If you're doing visual and EAA, I can't imagine that you would benefit greatly from what I did my scope. However, with a fast Newt like this one, collimation is key - even for visual!
Edited by jmiller1001, 10 April 2019 - 10:49 AM.