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Re: [ATM] ATM re: large Schmidt camera?

How about a lensless Slevogt(sp)? That should give him the flat field he
is seeking.
Anyone want to run the numbers through Oslo as to what would be needed
for a secondary? The ROC of the primary but reverse sign should make a
starting point.

George Anderson
Montreal Canada

Clear skies and good health

"The Alarm Co." wrote:
> 
> The "obvious" solution to me is a Lenseless Schmidt.  (Rutten and Venrooij,
> chapter 8) Aperture stop at ROC, camera at focus.  The focal plane is still
> curved, but that's where a field flattener could work.  As for the details,
> aperture sizes vs mirror diameter, flattener specs, all that, you're on your
> own.
> 
>  *  Best regards, Bob
> *
>          *           *   *
> 
>             *         *
> 
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