13-01-2007, 08:29 PM
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Registered User
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Join Date: May 2006
Posts: 2,590
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As quoted from here
http://www.gs-telescope.com/content.asp?id=95
"Our parabolic mirror size from 6" to 16", all of these mirrors were made
by BK7 or B270 quality optical glass and all the mirror surface quality
over 1/16 wave RMS at the least, typically better."
Sorry I got it wrong oooop's : )
regards,CS sunny days
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