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350mm f5 mirror


perrin6
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This mirror had a very poor figure when I purchased it from a well-known optical company and I was able to produce a big improvement with my first ever attempt to figure a mirror although it still has a fairly wide turned-edge and planetary detail is best seen with it masked to 320 mm (12.6 inches).


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350mm (13.8 in.) F5 home-made single-pole telescope

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