Re: [ATM] Luri-Houghton prescriptions.

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

Actually I hadn't.  The guy is intending for it to be used
intially for visual use and then evenutally for imaging as time
goes on.  He's willling to have two different secondaries for
this purpose, a small one for visual use where vignetting isn't
important and a larger one whree flat illumination is but the
obstruction isn't.
The guy does have his doubts about a lot of stuff and things like
the secondary size discussions produce all kinds of questions
with the simple words that require deep discussions to clear up.
For example of the secondary size, explaining the contrast loss
relative to the object size is a fun one.
Bob May
bobmay at nethere.com
http: slash /nav.to slash bobmay
http: slash /bobmay dot astronomy.net
Addresses have been munged up to keep spammers from bothering me.
replace the obvious words with the proper character.
Thank you for your understanding!

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