Oh, I'll measure the exact outer diameter of the tube tomorrow too... I was considering a set of rings and a longer dovetail... This would also be advantageous as the standard aluminium dovetail bolted to the front and rear of the scope negate the use of carbon fiber in the tube to stop thermal expansion. Using rings will detach the aluminium from the OTA itself, allowing the dovetail to expand or contract without putting any stress on the OTA... Just a thought..
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