From: "mommoteandcoyote" 
To: "Jerry Hudson" 
Cc: 
Reply-To: "mommoteandcoyote" 


Jerry, Matt, Rick, etal,

Guys, I'm in the process of scanning the information presented by Edgar
Everhart, Rudolf  Kingslake, and others.  These papers will be attributed
and posted in the Archives on the *Schmidt Camera and Telescope* site.  I
have posted the pictures of the little, "Experimental", Folsom
Schmidt-Maksutov Cassegrain optics, "and stuff"... they look the
same as they did when they were packed up 10 years ago...Guess they knew I
was going to need you guys to help, I'm thinkin'...(chuckle)

Coyot‚


----- Original Message -----
From: "Jerry Hudson" 
To: 
Cc: "ol' Coyote" 
Sent: Thursday, January 23, 2003 12:30 PM Subject: Re: Re:ATM An Old TMs Simple Query


> Matt -
>
> Unfortunately, that was many moons ago, and I've
> lost my copies I'd Xeroxed of them.  However,
> I do recall the articles appeared in Applied
> Optics, about 1965, and related to the Wright version of
> the Schmidt, which places the corrector near
> the focus rather than c of c.  The primary is
> made oblate with the opposite correction of
> a parabola, and the corrector has to be about
> twice the correction of a Schmidt of the same
> focal ratio.  The Wright has a flat field, so
> no need for a corrector.  (I use a Newtonian
> diagonal both for viewing and photography with
> a 35mm back.)
>
> Everhart's innovations included showing how
> Bernard Schmidt used the vacuum method to do
> the lens (including formulae), and a clever way
> to null-test the primary in the workshop.
>
> Coyote will maybe want to amplify on this, and
> perhaps can give you more exact references.
>
> - Jerry
>
>
>

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