The Newtonian telescope reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Newtonian telescope

The Newtonian telescope is a type of reflecting telescope invented by the British scientist Sir Isaac Newton (1643-1727), using a parabolic primary mirror and a flat diagonal secondary mirror.

Newtonians are usually less expensive than comparable telescopes of other types. The Dobsonian variety is popular among amateur astronomers and amateur telescope makers.

This article is a stub. You can help Wikipedia by expanding it.

This is the "Newtonian telescope" reference article from the English Wikipedia. All text is available under the terms of the GNU Free Documentation License. See also our Disclaimer.