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Getting The Pieces

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Posted by Heinz/">Heinz on December 10, 1997 13:56:43 UTC

I have a 12" X 70" piece of PVC pipe in my livingroom, "I want to make a telescope." 1)How do I grind the primary mirror? 2)Is 60" a good focal length? 3)What are other stghts on the web I should visit? Thanks


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