Re: [ATM] Constraints on design

["Richard F.L.R. Snashall" <rflrs@rcn.com>]

Richard wrote:

>Hi Richard,
>
>Wednesday, April 27, 2005, 8:03:59 PM, you wrote:
>
>RFLRS> How would you implement
>RFLRS> the design, particularly with respect to
>RFLRS> attaching it to the corrector?
>
>Personally, I'd throw it away :)
>
>What are you trying to achieve Richard?. It looks like a very
>expensive way of achieving pretty poor results. Considering it's
>f10.2 it should be diffraction limited without the corrector,
>whereas it is far from diffraction limited with it. Is it the
>spherical secondary that is the object of the exercise?
>
>  
>
Actually, only ATMOS indicates that this as a poor design.  Both OSLO
and ZEMAX indicate visually diffraction-limited performance.  The
constraints are that the primary is spherical while the secondary
is parabolic with a BFL of 3/4 aperture.
_______________________________________________
ATM mailing list http://www.atmlist.net/