[RickS (Rick)]

Originally Posted by alpal

Just look at the trouble Anthony Wesley goes to to get the temperatures the same:
http://www.acquerra.com.au/astro/cooling/ballarat/

He's imaging at much smaller image scale than us DSO guys and doing lucky imaging. By comparison, DSO imaging is a lot less demanding wrt resolution and typically limited by the seeing rather than the optics.

Cheers,
Rick.