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TelescopeTown.com Tip: If you own a refractor telescope, your telescope will most likely come fitted with a lens shade/dew cap. However, other types of telescopes such as a Schmidt-Cassegrain telescope require you purchase a lens shade/dew cap. Schmidt-Cassegrain telescopes tend to be prone to dew accumulation due to the location of the glass at the end of the tube.
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Mary White |