Re: [ATM] ATM Schiefspieglers in Oslo EDU - updated

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

Donald Good wrote:
> Hi Jerry, 
> Here is a modified .len file that includes a diagonal flat before the focus
> to give it a more accessible focus location.  I didn't include it in the
> previous .len file because it did not contribute to the analysis of the
> image.  Unlike David Stevick's plan 
> (see http://bhs.broo.k12.wv.us/homepage/alumni/dstevick/sptbrief.htm )
> in which the diagonal directs the final light path across the light path
> between the secondary and tertiary mirrors, this plan directs final light
> path out the side, giving greater leeway since the final distance is
> shorter.  To see how this works out, use the 3D lens drawing or the 2D "top"
> view (from the menu, select Lens/Lens Drawing/System... Then under View
> type, pick X view).  Note that the diagonal does not change the analysis
> reports.
> 

Can we figure out exactly how close this is to the CG (given some weight
assumption, say)?  I was curious if this would come out at the
declination bearing point of a fork, for instance.

> So it is not "fat chance".
> Clear skies,
> Don


-- 

Rick S.

http://users.rcn.com/rflrs

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