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RE: My 6

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Posted by Stephen Campbell on March 21, 2000 19:39:58 UTC

A few years ago i made a 6" f/13.3 newtonian, and found that it produced very impressive views of the moon and planets, it is spherical, and truly diffraction limited. you have to stand on a milk crate to look through it however. run a knife edge and ronchi test, its probably a sphere. if you want a shorter tube length you may consider a coude or nasmyth focus cassegrain..steve

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