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Re: ATM 12" F2 mystery mirror

To: <atm@shore.net>
Subject: Re: ATM 12" F2 mystery mirror
From: "Bob May" <bobmay@nethere.com>
Date: Sat, 4 Aug 2001 11:21:06 -0700
References: <000a01c11ca5$b3cfb4c0$711e39ce@default>
Reply-To: "Bob May" <bobmay@nethere.com>
Sender: owner-atm@shore.net


I don't know what it was originally intended for but if it is hyperbolic,
you may consider a short FL Ritchy-Chretian cassegrain.  If it's actually
parabolic, I'd do a Gregorian with a tertiary flat to bring the focus off to
the side rather than perforate the primary.
FWIW, I've gotten ahold of a 6" F1.95 mirror that needs to be parabolized to
make a Gregorian scope.
Bob May
http://nav.to/bobmay
bobmay@nethere.com

References:
- ATM 12" F2 mystery mirror
  - From: "William Kelley" <wekelleylwk@sedona.net>

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