Wow, you must be impressed with the outcome, its beautiful!
You've answered a question burning at the back of my pea sized brain, I have an astro-trac I'm yet to get out and play and Orion (M42) is my primary target. I have plenty of images taken through my 8" RC using from memory maybe my D810 (or maybe a small astro camera, I honestly don't remember) but I've been trying to decide on exactly which lens I want to use for the target and I have a nice older 80-200 f2.8ED, 16 element Nikon lens in with all of my other junk which I purchased new in 91.
Though if the camera doesn't come back from the repair centre soon it will be on my Player one Neptune (178 colour sensor, again, I think) in which case I may go to my Samyong 135mm f1.4. Once the moon dies down a little and health improves.
The 650D is an APS-C sensor isn't it?
In which case my 80-200 will be fine on my player one camera, better on my Nikon eventually, hopefully.
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