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The good news....it can be done!
I've used a QHY5, ATiK16 and now a Starlight Lodestar guide camera to guide my spectroscopes on C9.25 and now the C11.
I use a beamsplitter, but it has the same off axis issues as a conventional OAG....
As long as you remember the imaging camera and the guide camera maust be at the same distance...you can alter each to get the best outcome....
When you get there, you'll wonder what the fuss was all about!
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