From: "Richard F.L.R. Snashall" 
To: ATM 
Reply-To: "Richard F.L.R. Snashall" 



Is there some source of information that would give the spherical
aberration contributed by the primary and secondary in a Masutov Cassegrain
system, so that the amount of aspheric that is needed can be calculated? 
(This ignores the fact that, at certain values, this aspheric is close to
being spherical.)

        Rick S.

--- BBBS/NT v4.00 MP