Re: [ATM] R0 (the vertex radius) and the conical constant Kfor each the mirror

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

At 11:51 7/6/05, Richard F.L.R. Snashall wrote:
>Shipping Dept wrote:
>
>>
>>How does one figure out the R0 (the vertex radius) and the conical 
>>constant K for each the mirror for a set of Ritchey Chretian Mirrors?
>>
>>Thank you
>>
>>Brian Stout
>
>You might try:
>
>    http://users.rcn.com/rflrs/twomirrors.htm

Or you could try my Cassegrain design spreadsheet. The Excel version is at 
<http://home.earthlink.net/~mlpeck54/astro/cassbaff/cass_xls.zip>. There's 
also an identical version for Quattro Pro.

Or, you could look up the formulas in Tex or R&vanV and plug numbers into a 
calculator or write your own little program.

Totally OT, but I've ditched my static, and rarely updated wildlife 
photography page on my free web space with a wildlife photography blog at 
<http://wildlife-pix.com>. Feedback would be much appreciated while it's 
still in its infancy. Do it via comments or private email though, not the 
ATM list!

Mike Peck


_________________

Michael Peck
email mpeck1@ix.netcom.com
Wildlife photoblog! http://wildlife-pix.com
Amateur telescope making http://home.earthlink.net/~mlpeck54/astro/astro.html 

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