[ATM] 12 inch binocular scope
mbartels at bbastrodesigns.com
Sun Feb 6 02:49:15 JST 2005
> My girlfriend and I are making two 12 inch mirrors. We want to build a 12
> inch binocular Newtonian. We found information about building binoculars,
> but not about the f/value tolerance of both mirrors. Could someone point
> to that kind of information?
There's a binoc discussion group: binewt at yahoogroups.com
I believe the consensus is to keep focal length tolerance to 1% or better.
If you use the same tool and make both mirrors at once, I don't think this
is too much of an issue.
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