Thread: Bintel optics any good ?
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  #35  
Old 19-12-2012, 06:40 PM
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doppler (Rick)
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Andrews has GSO 303mm internal diameter tube rings for $49 a pair, but I think a 12" scopes tube rings would have to be at least 400mm?
Last edited by doppler; 19-12-2012 at 07:17 PM.
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