mtodman
16-04-2010, 11:34 AM
I'm looking at picking up a used Cll XLT OTA to satisfy my planetary & deep space needs (especially imaging galaxies) and have a few questions:
1) Has anyone come up with an effective way of locking the primary mirror so as to avoid mirror flop? I've seen a few methods available but I'd like to know if anyone on these forums has sucessfully achieved this?
2) Field curvature & Coma - Which reducer / corrector should I be looking at? Would the standard Meade f/6.3 reducer do the job? Are there other ones out there better suited to the C11?
3) Piggybacking - I would probably look at piggybacking my FSQ106. Do you think the C11 OTA is solid enough for this?
4) Cooling - How important is this? I would like to get back into some planetary imaging. I've seen Paul Haese's Peltier cooling mod. Do I need to go this far? What advantages does peltier cooling have over installing fans alone?
Many thanks
Matt
1) Has anyone come up with an effective way of locking the primary mirror so as to avoid mirror flop? I've seen a few methods available but I'd like to know if anyone on these forums has sucessfully achieved this?
2) Field curvature & Coma - Which reducer / corrector should I be looking at? Would the standard Meade f/6.3 reducer do the job? Are there other ones out there better suited to the C11?
3) Piggybacking - I would probably look at piggybacking my FSQ106. Do you think the C11 OTA is solid enough for this?
4) Cooling - How important is this? I would like to get back into some planetary imaging. I've seen Paul Haese's Peltier cooling mod. Do I need to go this far? What advantages does peltier cooling have over installing fans alone?
Many thanks
Matt