Quote:
Originally Posted by Somnium
i wouldn't say that. the RC will be f8 so you need much more exposure time than an f4 or 5 newt. you also get a better FOV. also RCs will have curvature at the edges so require a flattener. a newt with a coma corrector is really good. not saying that the RC will not perform well but there are other considerations
|
+1
If you look a bit more closely, most of the killer RC shots you see posted here are taken over numerous nights from fixed observatory setups. For an amateur set up you'll likely be putting up and knocking down for 1-2 nights max sessions, don't underestimate how important F5 is versus F8 to get a decent signal:noise image. Lots of objects you will want to start on will struggle to fit in the Newt's FOV, let alone the RC is another issue. Perhaps download the free "CCDCalc" and play with focal length and camera combinations to see what I mean.