Thank you for your words of caution, Clive.
The design is certainly radical, though not unique, in so far as single pole Newtonians goes. Gary's design has issues. But these issues also depend on the application of the scope, and to what the owner of the scope finds acceptable.
Any design would require careful consideration. From my own experience, a first idea would be just be that, an idea. The final design would most likely be very different, taking into acount many mechanical issues into consideration.
What is important is that checks and balances be there, like your words of caution. I am under no illusion that such an instrument presents particular challenges. Foolish I'd be to think not.
It would also be good to get some insight into the scope's actual performance. This would give some insight to what changes could be done to such a design, or what to do to create an improved/different hybrid. That is the way of ATM. May well be that a multi pole folded scope may prove more sound.
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