Refracting telescopes come in a wide variety of types, sizes, and prices. Light enters through the front of the telescope, passes through the tube, and then exits through the rear to an eyepiece or camera.Ī doublet (two lens) refracting telescope. While 1. The process of bending light is called refraction, hence their name. Many telescopes allow use of either size barrel, so verify your telescopes individual focuser specifications prior to any purchase. Refracting telescopes work by using glass lenses to bend light into focus. Refractors were the first type of telescope to be invented in the year 1608. Refracting telescopes are one of the three main categories of telescopes, with the other two being Reflector Telescopes and Catadioptric Telescopes. Refractors are the simplest type of telescope, and use glass lenses to magnify and focus incoming light.
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