Schmidt-Cassegrain Telescopes
Schmidt-Cassegrain telescopes use both mirrors and a lens (corrector plate) to focus light into a smaller area. Schmidt-Cassegrains are popular due to their compact size relative to their aperture. These are the Jack of all trades in the telescope business. They are moderately well adapted to a wide variety of applications, including lunar, planetary, deep space, and even terrestrial observing. The market for commercially produced Schmidt-Cassegrains has been dominated by Celestron and Meade Instruments Corporation since the 1980s. Both companies now offer more costly derivatives of the Schmidt-Cassegrain design listed on our website under the designation of Aplanatic Schmidt-Cassegrain telescopes. The latter are primarily designed for for wide-field imaging with larger format CCD cameras; we believe that most visual-only users will be satisfied with the original Schmidt-Cassegrain designs.
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