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When adding a Losmandy full length vixen style dovetail camera mount to my 1990 c8 I found two screw holes at the back of one thread on the scope and one at the front of another thread.
The solution was to make a plate to add on with the correct holes. I made this by heating up a 20 x 5mm bar of aluminium 75 mm long clamped to a heavy 200mm diameter aluminium plate . I formed it by hitting it with a wooden mallet while hot and spraying black. Not very elegant but far cheaper than radius blocks.
Can you bolt on radius blocks using the existing holes or add an external (or internal) threaded plate as I did.?
The other point is that the rear cell of a 1990 Celestron sct is designed to support the entire weight of the Ota and they can be supported on one camera tripod bracket . The front cell may not be so robust and so drilling or tapping it for screws without reinforcing risks deformation of the corrector support.
Last edited by Sunfish; 20-08-2018 at 09:11 AM.
Reason: Adding point
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