Re: ATM Cassegrain as 2nd project / optics calculations

["Bob May" <bobmay@nethere.com>]

The book to get (along with the software for it) is the Rutten and Van
venRooij book Telescope Design from Willmann-Bell.  The software is basic
DOS stuff and the authors make no apologies for it but it does do accurate
designs.  The book itself goes through a whole lot of various designs
(you'll see some different stuff in there!) and provides good explainations
of them.  It also handles refractors decently.  You'll find it to be a book
that sits at your side table for gentle perusing.
Bob May
http://nav.to/bobmay
bobmay@nethere.com
NEW! http://bobmay.astronomy.net