[ATM] Fast primary unobstructed telescope

[Kevin Whitefire <chaosopher23@yahoo.com>]

I have a primary that's 13.25" in diameter with f/D of
3.125, give or take a little.  Its exact ratio isn't
closer than a quarter inch accuracy, using a solar
focus on a white surface.  Its surface figure is
smooth, slightly zonal, and hyperbolic in general.  So
far, I have intent to use it as a Gregorian if I can't
get an unobstructed design for it.

Is there an unobstructed telescope configuration that
works with a fast primary like I have?  I don't care
about the final f/D of the scope, but I want a visual
system that can be used with common eyepieces.

Why am I doing this?  The same reason that causes
people to climb mountains, the same reason that dogs
chase cars.  They're there.  This problem is here.

A push in the right direction is all I need.

Kevin of Eastern Iowa
Seeker of the Darkness


		
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