I currently have a Skywatcher ED80(Gold) on a HEQ5 pro Mount with a Canon 20D DSLR Camera(unmodded)
I am looking at an upgrade path for the Telescope and would be grateful for some advise.
Requirements:-
1. Faster Focal length - maybe around F6 ish
2. Compatible with Canon 20d so there is little or no vignetting.
Flat field(if possible) If a flattener will help, which one would be recommended?
3. Size -maybe up to 100mm as long as the HEQ5 will handle it
4. No Chromatic Aberration
5. I have been looking at the W.O Megrez 90b??? any others??
Looking to spend upward of $1500ish - Secondhand always considered
Any suggestions gratefully appreciated
Cheers Geoff