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Royce Conical Mirror - Anyone using?
I am considering using a Royce Conical mirror for my next scope build - a 12.5" f5 imaging newt. This will be an ultra light scope, constructed of carbon fibre tubes, an optimised for imaging with focuser on the underside of the 'tube' structure at the front to optimise balance. A Royce Conical mirror would weigh less than half that of an equivalent full thickness mirror. Any users on IIS?
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