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Telescopes 101: 15 essential things to knowReflecting telescopes use mirrors to gather and focus ... Two popular catadioptric telescopes are the Schmidt-Cassegrain and Maksutov-Cassegrain designs. 4. Is it true that I should purchase ...
Thankfully, there are lots of entry-level telescopes on the market ... His instrument is a Celestron NexStar, a Schmidt-Cassegrain reflector with a 150-mm aperture, has a motorized altitude ...
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