BACHELOR OF SCIENCE (HONS) Study Guide - Final Guide: Curved Mirror, Chromatic Aberration, Secondary Mirror
16 Jul 2022
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Document Summary
A refracting telescope for viewing terrestrial objects through an eyepiece that consists of three or four lenses so arranged that the final image is right side up. Astronomical telescopes are used for viewing distant stars and planets the final image in the astronomical telescope is inverted whereas that in the terrestrial telescope is erect. A newtonian telescope is a reflecting telescope that uses a combination of mirrors to form an image. It was invented by sir isaac newton as an alternative to the refractive telescope. The primary reason for the invention of the reflecting telescope was to combat the chromatic aberrations that occurred in the refractive telescopes. The cassegrain telescope is an astronomical reflecting telescope, in which the light is incident on a large concave paraboloid mirror, and reflected onto a smaller convex hyperboloid mirror. This reflected light is reflected again through a hole in the concave mirror to finally form the image.
