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I wonder how much it would cost to get one lazer cut out of 2mm thick AL sheet..
Oh, I'd need a couple of them wouldnt I... one for prime focus @ 2800mm, one @ F/6.3, and one for planetary imaging @ 6~7m focal length.... could probably do without the one for planetary... but even then, 2 of them for F/10 and F/6.3 respectively would be expensive to get made as one off's
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