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  Telescope Type: Astronomy: Telescope Type - Image-WHICH WAY UP
Posted on Saturday, December 11 @ 01:06:22 CST by astronomy
 
 
  Telescope Type

WHICH WAY UP?

All telescope designs produce upside-down images, but the refractors and the Schmidt-Cassegrains are usually used with an accessory called a star diagonal, which fits just in front of the eyepiece.

This turns the image right way up but also swaps it left to right, so that you see a mirror image. The images in reflectors are generally upside down.

 
 
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