Cassegrain Telescopes

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A Cassegrain style telescope looks like a short stubby refractor where light goes in one end, and you look out the other. Unlike a refractor which uses a lens at the front of the telescope to collect light, a Cassegrain uses a mirror at the bottom of to reflect light up the tube to bounce off a curved mirror through the hole in the main mirror. You observe or attach a camera at the rear of the telescope.

In telescopes like SCT (Schmidt-Cassegrain Telescope) or Maksutov the glass lens at the front of the telescope is used to make corrects to the quality of the image and doesn’t actually concentrate light like a refractor would.

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    Celestron Ultima 100 w/22-67x Zoom Spotting Scope
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