Quote:
Originally Posted by thersites
wow, what a response! thanks to all yet again. seems like there's no black and white answer. if the choice was purely between the gso 12 and gso 10, and i'm in eastern nsw, would the 12 be better? 1.44 times the light gathering sounds very palatable, just concerned about getting a well figured mirror in such a large mass produced mirror.
adam
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I wouldn't worry about it. If you really that concerned then buy a hand-figured locally made mirror. In those sizes they are readily available through dealers who cater for the ATM market.
Re light gathering figures, you should really go out to a viewing night at a local club or informal observers' meeting and look for yourself to see what the numbers mean in practice. Ditto sizes of scopes: 8" vs 10" vs 12"; solid tube vs truss...