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Old 30-12-2009, 06:10 AM
knight2255
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knight2255 is offline
 
Join Date: Dec 2009
Posts: 2
Need help designing a newt

I'm finishing up polishing a 10.5" F/6 mirror and figured it was time to get to work on my UTA of a truss scope. I already ordered a 1.8 antares secondary thinking it would fit the bill but now I'm not so sure. Here is what I've got so far after drawing up the light cones of both a 1.8 and 2.0 secondary in autocad.

http://i46.tinypic.com/3008dmo.gif
Are you supposed to have the light come to a focus and then expand into the eyepiece as I have it with the 24mm eyepiece?
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