Re: [ATM] Pretoria eyepiece

[Michael Peck <mpeck1@ix.netcom.com>]

At 23:22 04-06-04 +0200, Gianluca Carinci wrote:
>Here the question (sorry for the lenghty introduction...): is there anyone
>knowing about a web resource where I could find a quite in depth study of
>the Pretoria eyepiece ? I've found a reference in Rutten & Van Venrojii

This isn't really in depth, but this article has quite a lot of interesting 
information about the history of eyepiece design and at least mentions the 
Pretoria: 
<http://www.brayebrookobservatory.org/BrayObsWebSite/BOOKS/EVOLUTIONofEYEPIECES.pdf>.

Peter Smith is the resident expert on eyepieces. He has a huge collection 
of patent applications from the U.S. in his files and maybe from other 
countries by now.

Mike Peck


_________________

Michael Peck
email mpeck1@ix.netcom.com
Wildlife photography page http://home.netcom.com/~mpeck1/index.html
Amateur telescope making http://home.netcom.com/~mpeck1/astro/astro.html

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