From: "Richard F.L.R. Snashall" 
To:  atm{at}shore.net
Reply-To: "Richard F.L.R. Snashall" 




mommoteandcoyote wrote:
> Rick,
>
> The only real problem I found with the system , was the increased  coma due
> to the extreme shifting of the corrector from its optically pure position at
> the radius of curvature of the primary mirror.
>

If I understand the stuff that comes out of ZEMAX here, it looks about
equivalent to an f/8 (or slower) Newtonian.

                Rick S.

>
> Coyot‚

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