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Old 03-04-2012, 07:42 PM
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gregbradley
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Join Date: Feb 2006
Location: Sydney
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Quote:
Originally Posted by Bassnut View Post
yes, thats for sure, SBIG has been mucking around with dual guiding development for ages and it's still not available. Mike Berthon-jones knocked up multiple star, dual guiding (with an OAG and external guide scope) for his SBIG/20" CDK in a matter of days. I sat in front of the OBS PC while it was guiding and it was stunning. 2sec subs from the guide scope, and longer from the OAG for fast, no flex guideing for 1hr subs way over 2m FL. And with 10 or more stars . If an amature can do this, are SBIG and FLI asleep , sheesh, makes you wonder.

Wow.
How did do multiple stars Fred? Was that using the Maxim plug in? I thought that was for only 2 stars though.

I was wanting to do the same and plan to do that fairly soon. MMOAG and a guide scope.

I was thinking also perhaps a guide camera with multiple CCDs in it to get multiple stars each one indepently setup or even out of phase with each other over several seconds to avoid seeing effects. Say 6 CCDs (small ones like little Sony ones) each imaging at say 6 - 12 second exposures and 1 second apart always getting a bright guide star (5 second exposures should capture a decent guide star in most images) and 1 second apart for rapid corrections.

Perhaps even an averaging of the 6 ccds in times of bad seeing to more closely extract the actual PE from the seeing effects.

Want to build one Fred? Imagine how many we could sell if it set a new standard of excellence.

Greg.
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