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[ATM] Off-centered Mirrors?

To: atm@atmlist.net
Subject: [ATM] Off-centered Mirrors?
From: DHA352@aol.com
Date: Sat, 23 Oct 2004 15:54:59 EDT
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Has anyone tried an off-centered mirror?  I will try to explain:   Imagine a 
22 inch f/6 Newtonian, mask it down to 10 inches.  Now move the  mask near to 
an edge such that the shadow from the secondary and its support is  not on the 
mirror.  Now the hard part (thus my question), make only the  unmasked 
portion of the mirror.  Voila, an unobstructed scope without  astigmatism.  The 
"Center" for COC grinding would be 2 inches off  the  glass. etc.

Don
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Follow-Ups:
- Re: [ATM] Off-centered Mirrors?
  - From: "Bob May" <bobmay@nethere.com>
- Re: [ATM] Off-centered Mirrors?
  - From: Michael Lindner <mikell@optonline.net>
- Re: [ATM] Off-centered Mirrors?
  - From: Wouter van Reeven <wouter@van.reeven.nl>

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