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Old 27-06-2011, 06:37 PM
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pmrid (Peter)
Ageing badly.

pmrid is offline
Join Date: May 2008
Location: Bribie Is.
Posts: 3,130
Originally Posted by multiweb View Post
I might start a sh|t fight here but I'd go with an SBIG Camera + AO combo. I know you have already a QHY8 but those AO are not exactly cheap although they do the job to some extent. The SX does the job for me at 4-5 corrections per second (on a good night) and takes care of most micro-guiding errors, wind buffeting, etc... but if you want to go long and tackle the seeing you have no choice but go with a fast tilt mirror and SBIG and its proprietary technology are the only one on the market that I know provide an all in one solution. And as Fred said as well good luck finding a guide star bright enough too. Depends on a lot of things. No easy answer I'm afraid.
Yeah. My gut feeling is that the guidestar thing will be the decider. I'll have a look at the MMOAG while I'm in this mood and see whether I can marry that up with a guidecam with more grunt that the little QHY5. Lodestar is the cam of choice I know.
The thing I want in an OAG solution is the ability to rotate the guide-cam around the axis of the light cone - the Celestron Radial Guider does it and so does the Orion Deluxe OAG. But the darned Orion AO unit does not. Nor does the MMOAG I think although I'll have to check that out again because now I'm not sure.
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