Quote:
Originally Posted by Peter.M
The idea would be that the gso mirrors are the only thing from them in the scope, the rest would be custom made from carbon fiber. If the system worked then it would be trivial to replace the mirrors with better quality ones.
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I would fabricate a rigid truss out of (welded) steel and stick with the gso mirrors which are more than good enough. The money you save would go a long way towards buying an atlas focuser.
There is a reason why professional ground based telescopes are still to this day engineered with steel trusses, this being that carbon fibre and all the associated ball end connectors do not offer sufficient practical advantage to warrant their expense. I would also go so far as to say that a steel truss can be made with intrinsically better geometry compared to an assembled carbon fibre truss (as distinct from a monolithic cf truss) because you don't have to make do with trapezoids which only approximate triangles.
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