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astrographic telescope

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  • Vatican Observatory — • Gregory XIII ordered a tower to be erected in a convenient part of the Vatican buildings, and to be fitted out with the greatest and best instruments of the time Catholic Encyclopedia. Kevin Knight. 2006. Vatican Observatory      …   Catholic encyclopedia

  • Sydney Observatory — The observatory photographed in 1874. The obser …   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

  • List of astronomy acronyms — This is a compilation of acronyms commonly used in astronomy. Most of the acronyms are drawn from professional astronomy and are used quite frequently in scientific publications. However, a few of these acronyms are frequently used by the general …   Wikipedia

  • 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

  • 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

  • Albert Bouwers — Albert A. Bouwers (1893–1972) was a Dutch optical engineer.[1] He is known for developing and working with X Rays and various optical technologies as a high level researcher at Philips research labs. He is lesser known for patenting in 1941 a… …   Wikipedia

  • Star catalogue — An illustration of the Perseus constellation (after Perseus from Greek mythology) from the star catalogue published by the German astronomer Johannes Hevelius in 1690 A star catalogue, or star catalog, is an astronomical catalogue that lists… …   Wikipedia

  • 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

  • Guide Star Catalog — The Guide Star Catalog (GSC) is also known as the Hubble Space Telescope, Guide Catalog (HSTGC). It is a star catalogue built to support the Hubble Space Telescope with targeting off axis stars. It contains approximately 20,000,000 celestial… …   Wikipedia

  • List of astronomical catalogues — This page is a list of astronomical catalogues organised by catalogue identifier.0 9* 0ES Einstein Slew Survey, version 0See p. 20, X ray sources in SIMBAD, J. M. Hameury, C. Motch, and M. Pakull, Bull. Inf. Centre Données Stellaires 47, pp.… …   Wikipedia

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