@bobzeq25: Great M31 with a 200mm! Question: Did you scale the final image? It appears large from a 200mm w/o some scaling..
I generally do all my pre-post work in Capture NX at a pixel level,Then Adobe PS for bicubic enlargement with resample off. Last I do is "scale" where I seem to max out at about 250%.
@happylimpet: Appreciate the encouragement.
I've been away from this hobby a long time. I didn't have the tools I see today. Back then I used a 8" f/6 Newt (ground the mirror myself), cold cameras and gas hypered 35mm film; hand guiding for sometimes 2hrs while peering thru a 80mm APO (talk about tube flexure!)..ahh the good 'Ol days.
When I re-entered this hobby, I was awe struck by the new technolgy available to the amateur. "Auto-Guiding" in particular when coupled to a computer is amazing; as are the new crop of CCD dedicated astro-cams. I can see how AP could get addictive, not to mention expensive from what I've seen. $$$
As I've only recently re-entered this hobby; I'm content trying to use my DSLR and simple visual only thru my newly acquired Celestron Edge 9.25".
I've considered mating the DSLR to the prime focus, but at f/10 I doubt it's a good choice for DSO. The focal reducers sure are not cheap nor is Fastar, which is pretty cool.
I will confess, as cold as it here at the moment in the midwest, with few consecutive clear nights in Jan or Feb, I am a bit lazy about polar aligning and I tend to rush my setup.
So far I must be getting lucky just doing the PA with the polar scope as my stars seem to exhibit little trailing if any up to 4 mins unguided. (No PEC)
I'm just outside a city of 200,000, LP is a big problem. The sky fog is quite noticeable and disappointing; especially to the east.
I'm finding focusing the DSLR quite a challenge, even using "Live-View" magnified. So far all I've done is focus the best I can and VERY gently place a piece of tape across the focus ring. My 80-200 f/2.8 is not image stabilized so I've ruled that out, but am starting to wonder as I slew to new positions if the lens may have some optical train components that may be shifting ever so slightly? Not a issue for normal terrestrial use, but AP is obviously a different set of rules.
Clear skies to all!
Edited by Blackbelt76, 22 January 2020 - 02:05 PM.