Backyard Voyager
Amateur Telescope Making -- Building an ultra light 12" dob
My amateur telescope making page
The "Deep Space Scope" Design
DS-3 | Mirror cell construction | Secondary cage construction | Mirror box construction | Plop Design | NEWT design | Finish the mirror box | Truss construction | Bearing construction and mounting | Rocker box construction | Details, current issues and future enhancements | Baffling and Contrast |The program NEWTWIN, by Dale A. Keller, was used in the design of
DS-3. This program was mainly used to determine the size of the
secondary ring and the secondary mirror. Sorry about the size of
the pictures - I wanted to keep them original screen size, which makes
them easy to read.
Initial setup specs were as follows:
Performance specs for DS-3:
The NEWT main page shows as follows. Notice that we are not
vignetting the 75% ray, and that a 2.05" secondary mirror is "big
enough".
A closer view of the focuser looks like this:
Details of the steps to design and build this scope are in the following pages:
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Telescope design using NEWT (new July 2005)
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Mirror cell design using PLOP (new July 2005)
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Baffling (new June 2005)