The Hubble Space Telescope is a telescope in orbit around the Earth. It was launched into space on April 25, 1990, and is basically a giant observatory on board a space station. Its position outside the Earth’s atmosphere provides a significant advantage over ground based telescopes as the images are not blurred by the atmosphere, there is no background light scattered from the atmosphere, and it can observe ultra-violet light that is absorbed by the ozone layer.
Since launched into space, the Hubble Space Telescope has become one of the most important instruments in the history of astronomy. It has been responsible for many ground breaking observations and has helped astronomers achieve a better understanding of many fundamental problems in astrophysics. Hubble’s ultra deep field is the most sensitive astronomical optical image ever taken.
Originally conceived in 1946, the Hubble Space Telescope was imagined as one of the most advance telescopes of its kind. The project to build this space telescope was plagued by delays and budget problems. Immediately after its launch, it was found that the main mirror suffered from spherical aberration which severely compromised the telescope’s capabilities.
In 1993, NASA sent astronauts into […]
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A telescope for sale today, is pretty much the same as the ones sold a hundred years ago. Though there are marked differences, the technology pretty much stayed the same. However, in the last few years, computerized GoTo telescopes have become very popular over conventional reflector telescopes. Discover more in this article.
Reflector telescopes also known as a Newtonian reflector after Isaac Newton who invented it, is a telescope that operates with a mirror at one end of the telescope, to collect light, and bring it further up the telescope, where a secondary mirror moves the light through optics, to your eye.
A reflector telescope has good performance, and for its price, it is usually better than a refractor telescope, when compared with price and performance. A reflector telescope however, is manual. Even with a motor, it requires you to know where to point it.
Having a GoTo computerized telescope combats this problem. A GoTo telescope, once set up correctly, will find any object in the night sky.
Meade, Celestron and Orion telescopes produce a GoTo telescope, and come with a controller that allows you to simply enter the code for what you want to see, and the telescope zooms through the sky doing […]
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