Quote:
Originally Posted by Andy01
MMM, this is new territory for me - I typically set & forget focus at the start of an imaging run with my two refractors. Motor focus will require imaging with a PC (I currently use a mac for everything, I've never used a PC  ) |
Probably a lot variables in that, mechanical and environmental. One guy who uses a TS ONTC newt says he hardly even needs to refocus during the night.
IMO you can get some decent results using a moderate sized refractor with small pixels... it's certainly been my approach and, not to blow my own trumpet, but I think my images hold up well to much larger, much harder to manage and potentially much more expensive scopes, even if it is well within the "yawn" zone as some might put it.
I've been eyeing off the ASi 178mm-Cool as well. Very small sensor, but only 2.4 micron pixels that I think will do well with smaller galaxies on moderate sized 'fracs; it's relatively cheap too and because of the small sensor size it'd be less demanding on optics.