Non-achromatic objective — A non achromatic objective is an objective lens which is not corrected for chromatic aberration. In telescopes they can a be pre 18th century simple single element objective lenses which were used before the invention of doublet achromatic lenses … Wikipedia
astronomical map — Introduction any cartographic representation of the stars, galaxies, or surfaces of the planets and the Moon. Modern maps of this kind are based on a coordinate system analagous to geographic latitude and longitude. In most cases, modern… … Universalium
Astrographenobjektiv — astrografijos objektyvas statusas T sritis fizika atitikmenys: angl. astrographic objective vok. Astrographenobjektiv, n rus. астрографический объектив, m … Fizikos terminų žodynas
astrografijos objektyvas — statusas T sritis fizika atitikmenys: angl. astrographic objective vok. Astrographenobjektiv, n rus. астрографический объектив, m … Fizikos terminų žodynas
астрографический объектив — astrografijos objektyvas statusas T sritis fizika atitikmenys: angl. astrographic objective vok. Astrographenobjektiv, n rus. астрографический объектив, m … Fizikos terminų žodynas
Astrophotography — An image of Orion s Belt composited from digitized black and white photographic plates recorded through red and blue astronomical filters, with a computer synthesized green channel. The plates were taken using the Samuel Oschin Telescope between… … Wikipedia
Astrograph — An Astrograph (astrographic camera) is a telescope designed for the sole purpose of astrophotography. Astrographs are usually used in wide field surveys of the night sky as well as detection of objects such as asteroids, meteors, and… … Wikipedia
Catadioptric system — A 150 mm aperture catadioptric telescope (Maksutov) A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors (catoptrics). Catadioptric… … Wikipedia