off-axis parabola
1Parabola — For other uses, see Parabola (disambiguation). A parabola …
2Far Ultraviolet Spectroscopic Explorer — Infobox Space telescope name = Far Ultraviolet Spectroscopic Explorer (FUSE) caption = FUSE in a pre launch clean room organization = Johns Hopkins APLNASA major contractors = alt names = Explorer 77 MIDEX/FUSE 25791 (NORAD ID) nssdc id = 1999… …
3Hyperbola — This article is about a geometrical curve, a conic section. For the term used in rhetoric, see Hyperbole …
4telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …
5Parabolic antenna — A parabolic satellite communications antenna at Erdfunkstelle Raisting, the biggest facility for satellite communication in the world, in Raisting, Bavaria, Germany. It has a Cassegrain type feed. A parabolic antenna is an antenna that uses a… …
6Newtonian telescope — The Newtonian telescope is a type of reflecting telescope invented by the British scientist Sir Isaac Newton (1642–1727), using a concave primary mirror and a flat diagonal secondary mirror. Newton’s first reflecting telescope was completed in… …
7Aspheric lens — An aspheric lens or asphere is a lens whose surfaces have a profile that is neither a portion of a sphere nor of a circular cylinder. In photography, a lens assembly that includes an aspheric element is often called an aspherical lens.The asphere …
8Crystal oscillator — A miniature 4 MHz quartz crystal enclosed in a hermetically sealed HC 49/US package, used as the resonator in a crystal oscillator. A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal …
9Conic section — Types of conic sections: 1. Parabola 2. Circle and ellipse 3. Hyperbola …
10Parabolic reflector — Parallel waves coming in to a parabolic mirror are focused at a point F A parabolic reflector (or dish or mirror) is a reflective device used to collect or project energy such as light, sound, or radio waves. Its shape is that of a circular… …
