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Well Marc, Nice approach. Thanks for the very nice internal pics of the C11 rear assembly. I'm hoping to do something similar to my C8, but for different objectives. Your concept adds a lot of incentive.
You were the one who first got me interested in the Hyperstar approach to the Celestrons, and my scope is outside right now in Hyperstar mode busy on the Pleiades.
To cut a long story short, after the Hyperstar shooting season finishes in a couple of weeks, I intend to disassemble the OTA and put a similar type of assembly at the rear of the mirror to allow 3-point focussing via a rear-mounted Crayford and tube inside the baffle tube. Details at 11.
I wont go into gory details at this stage, but your effort has sure inspired me to push onwards with my mods. I think the older Celestrons are a really cost-effective machine amenable to such mods and experimentation.
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