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[ATM] New to the mailing list

To: ATM@atmlist.net
Subject: [ATM] New to the mailing list
From: jarmstrong44@comcast.net
Date: Thu, 15 Sep 2005 14:40:51 +0000
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I have a question about the mirror in telescopes. Does the mirror have to be made out of glass or Pyrex? Can it be made out of other things? I was thinking about metal. Has anyone tried it?
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