Thread: Newtonian to Classic Cassegrain mod
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Old 10-05-2009, 02:24 PM
Wavytone
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Join Date: Jul 2008
Location: Killara, Sydney
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You could make a folded newtonian instead.
Details on my website:

http://web.me.com/nicholas.loveday/S...Telescope.html

With modern high-reflectivity coatings that are also durable, this is not as crazy as it seems. A primary at F/6 is too slow though, even for a classical cassegrain. You need a parabolic primary in the range f/3.5 to f/5 to start with, f/4 would be ideal.
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