Thank you Peter for the heads up.
Quote:
Originally Posted by codemonkey
I wonder how much backfocus it'll take up. Lots of correctors have stringent ~55mm spacing requirements... that's a problem with the SX unit, otherwise I might have looked into getting one in the past.
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Can an Active Optics unit be placed in front of a corrector? Star shapes for the guide camera would be yuk, but perhaps the system would work well anyway?
I also thought about such unit in the past, but I’m concerned that it adds complexity and not sure how long the motors that constantly move the prism back and forth last.