Thread: [WITHDRAWN] 6 inch refractor
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  #9  
Old 06-10-2013, 04:44 AM
bratislav (Bratislav)
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Join Date: Aug 2006
Location: Europe
Posts: 236
As far as I know Barry never used Fluorite (CaF2). Scope in question most likely used Ohara FPL glass, from memory his 6" doublets were NSL36/FPL52 combination. BTW, FPL glass is vastly more durable than Fluorite.