DCWZ

17 hours ago, Adam J said:

You will end up with a pixel scale of <0.5 arcseconds per pixel. Along with the weight of a 200/1000 (don't go with the F4 for galaxies) you will be struggling to guide to the required accuracy without an extremely capable mount / probably in a obsy. Also you will be struggling to get sufficiently good seeing (atmospheric conditions) to enable you to resolve objects down to <0.5 arcseconds per pixel unless you are imaging from an elevated location.

Thats not to say you cant do it though, its actually potentially a very good galaxy combination, your just setting yourself up for a challenge. The 183 is useful as a pure galaxy imaging at between 750mm and 1000mm focal lengths and for wide field nebula imaging at focal lengths <400mm.  I would seriously consider the 183m though as opposed to the OSC if you want to image galaxies in any light pollution at all as using filters with an OSC will result in horrible colour balance.

Adam  

Thank you for your input! I greatly appreciate it. Would you mind elaborating on why f/4 is not as ideal as f/5 for galaxies? Is it simply due to the shorter focal length?

Why is it that the 183MC is deemed to be unsuitable for longer focal lengths? I am currently looking at a 183MC to pair with lenses up to 300mm, but I would think that eventually, I would like to get a 200/800 or 200/1000 Newtonian to be used together with this camera. I perceive that the large crop factor with a decently long focal length should give me very good views of tiny objects, especially galaxies. Yes, my ultimate goal is galaxy chasing. 

So am I missing something out here?