Thread: Folding Refractor Astro Flat Mirrors
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Old 16-09-2016, 11:42 AM
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billdan (Bill)
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Location: Narangba, SE QLD
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Glen you are probably aware that Edmund Scientific sell Optical Flats at selectable wavefront surfaces.

They are expensive though, a 50mm diam one tenth wave flat is $200.

Cheers
Bill
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