Quote:
Originally Posted by Starkler
$1600 is serious coin for a 6" scope 
I believe RC scopes are preferred for astrophotography, but how much better results would you expect compared to say a 6" f5 newt + coma corrector? |
It really comes down to long focal length versus short focal length in the above comparison.
An F5 Newt has mirrors that are easy to make so the quality would likely be higher even if much cheaper. But it will be widefield and forget imaging galaxies or small objects. But you'd image widefield at F5 really quickly if you setup each time as opposed to F9 which is slow and requires several hours for each image to get a decent image.
Fast Newtonians seem to be quite popular and rightly so. They can offer sharp optics and fast speeds but the cost is perhaps a bit fussier in collimation and only able to do wide field.
I think it works backwards. Work out what type of image you want to produce and then the scope and camera combo comes from that.
No scope is perfect for every application no matter what brand or cost.
Greg.