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Originally Posted by billp
i've never looked through a telescope ...but have always been strangely drawn to it...a fascination of a kind ? having watched the program on John Dobson sunday night i now want to explore the subject. On the show i saw him grinding a lens [ or maybe the mirror ] for an OTA [ what does that stand for..please excuse my ignorance ] Is this part of builing your own Dobsonian. How is it done? Iask this as i am a glass caster and would like to know more about the mirrors used and if it would be possible to cast the mirror in starphire glass [ low iron glass ] thanks anybody?
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Any chance of a mod or admin moving this to a new thread? It sounds like an interesting subject to me.
Sorry, Bill, but if it's not done you'll be swamped with 'other stuff'.