[2014] Quethzali Salas: Telescopes

The radio telescope was invented in 1937 by Grote Reber, who built it in his backyard. It uses a amplifier, central antenna, it’s either dish or bowl shaped, a computer controls the telescope, and a tuner that separates signals. The advantages it’s less affected by air, it doesn’t have to be protected day or night, and you don’t have to worry about bad weather causes. However it’s expensive to build and land based, human-made.

The refracting telescope was invented in the 1600s. Hans Lippershey, Galileo and Kepler continued the design throughout the years. It uses two types of lenses. The thicker, curved lens magnifies, and the larger lens brightens. Other keys parts of a refracting telescope include a tube and an adjustable eyepiece. Some of the advantages of this telescope is its long lasting design, sharp images and its low maintenance. On the other hand, it is bulkier and more expensive than other telescopes.

Refracting Telescope

The reflecting telescope was invented in 1668 by Sir Isaac Newton. Galileo and other scientist discussed using a mirror for forming image. It uses a concave primary mirror and a flat diagonal secondary mirror. Some advantages of this telescope is that it’s portable, less expensive, and it view’s the deep sky. Although it has some disadvantages it’s fragile, the mirror’s need to be cleaned, realigned, and air can get in it.

Reflecting Telescope

Radio Telescope

The space telescope was renamed the the hubble space telescope in honor of Edwin Hubble. Space administration built the hubble space telescope. Hubble was launched into space on April 24, 1990. It uses a spacecraft computer, batteries, and a point control system. The advantages of this telescope is that it gives you a clear shot atmosphere. Although it has to be upgraded, power source, expensive, and maintained.

Hubble Space Telescope

Telescopes

Work CitedMacaulay, David. Telescopes: The Way Things Work. Open Court. McGrawHill 2002.