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8 times better than a Ritchey-Chretien ?
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24-11-2013, 01:23 PM
alpal
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Join Date: Jan 2012
Location: Melbourne
Posts: 3,687
Hi Clive,
what do you think about the manufacturers claim from "Hypergraph"
that it has a spot size 8 times smaller than a Ritchey Chretien?
alpal
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