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Hi Tim, Thanks for the interesting commentary on your dob. A very nice piece of work.
At various meetings of my club, I've had the chance to use 8, 10, 12, 16, 18, 20, 22 and 30 inch dobsonians. There's some agreement that a fast 16 is a sweet spot in terms of light gathering and useability. The 30 inch stays in the shed most of the time (how tragic is that?), the long 18 gives lovely views but requires a rather tedious step ladder, and the bread-and-butter 8s, 10s and 12s often leave you wanting more.
Happy viewing!
Mark
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