A telescope is a device to look at far away objects, mostly used for astronomic purposes to see stars and other objects as clearly as they were right in front of you. Usual telescopes used by ordinary people are a lot smaller than those used for scientific purposes as lastly mentioned can see as far as thousands of kilometers and investigate far objects.
The first telescopes were probably Assyrian crystal lenses. But the credit for assembling the first real telescope is usually given to unknown Dutch spectacle maker in approximately 1680. Galileo Galilei was the first to use the telescope for astronomical purposes. The telescope assembled by Galileo's consisted of a convex object lens and a concave eye lens, which is generally referred to as the Galilean telescope. Later on Johannes Kepler described a new kind of a telescope with two convex lenses in his book. Telescopes with that kind of a feature are commonly called the Kepler telescope.
Telescopes have so many different and exciting features. On this page you will read a bit more about the. Learn about the worlds greatest telescope, optical tubes, refractor and reflector telescopes and also about binoculars and monocular. And a small piece about telescope accessories.
