From: "Matt Considine" 
To: ATM 
Reply-To: "Matt Considine" 


V. Mahajan in "Optical Imaging and Aberrations" (part I) gives
the system aberration formulae
for two-mirror telescopes on p 412.  I have yet to work completely through
them, but need to
do that as I have a spreadsheet that needs to be double checked.

In the spreadsheet, I was calculating the spher. aberration contributed by
both the primary
and secondary, then determining what the corrector shape needs to be based up those
aberrations, spacing, etc.  When I've got some confidence that it works,
I'll post the calcs as
another section on VACPAN.

Regards,
Matt

Date sent:              Sun, 26 Jan 2003 22:10:24 +0000
From:                   "Richard F.L.R. Snashall" 
To:                     ATM 
Subject:                Re: ATM VACPAN webpage updated
Send 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.
>
>
>


--
"Research is the art of making sure dead ends are just that ..."
matt{at}considine.net
www.considine.net/mac/

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