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Compound (Catadioptric) |
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Catadioptric telescopes use both lenses and mirrors. |
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The Schmidt-Cassegrain, which was invented in the 1960s, is the most popular type of telescope; it uses a secondary mirror that bounces light through a hole in the primary mirror to an eyepiece |
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Maksutov-Cassegrain |
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Maksutov Newtonian |
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