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Having read through the full post, I found this very interesting.
However on the last page one chap chimed in with his 12" scope that was stock standard and had perfectly round stars. But there is a way to get the mirror settled down so there is no pinching.
I really would love Paul Haese to do a photographic essay on the transplantation of his mirrors into the truss skeleton as it would be a real aid to us others if we had to fiddle with collimation etc.
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