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Re: [ATM] The Norman Test

On Sun, 26 Aug 2007, Bob May wrote:

> Ah, thanks Dominic!  I didn't know which way that the e vsk went
> although I knew that one owas the wquare of the other.  I guess
> that if you found some SFS-01 then you can do an e of 1.98
> something and be near the k of about four. I pulled out one of my
> catalogs and managed to read the tables with the aid of a ten
> power eyeloupe just barely.
> I do assume that k means the Schwartzchild constant?
> Bob May


"k" is the conic constant. I punched my prescription into
Oslo and got a quite acceptable spot diagram for the 315 mm
diameter F/4.8 (primary) RC I am working on. Richard in the
UK was very kind on offering some suggested modifications,
but my original design does not appear flawed such that my
numbers could be far off.

Dominic

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