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Schmidt Newts

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Posted by Robert May on November 10, 2004 04:06:35 UTC

The Schmidt Newtonian will be a nicer scope than the stright Newtonian but then again, you pay for that improved performance.
Any scope with a Schmidt, Wright, Maksutov or Houghton type corrector will do a better job as the correction for the wavefront is done at the front aperture rather than at the primary mirror. This means that the primary is usually equal all over the primary image, allowing the image to be formed more properly at the focal plane. The biggest problem left for the above correctors is that the image plane can be curved, a problem that also happens with the best focus for the straight Newt. Mak and Schmidt corrector lenses are done on commercial optics of varying quality depending upon the maker. I find that the Schmidt Newtonian of Ceravolo Optics is an excellent scope.

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