astronomical declination

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• Astronomical chronology — Astronomical chronology, or astronomical dating, is a technical method of dating events or artifacts that are associated with astronomical phenomena. Written records of historical events that include descriptions of astronomical phenomena have… …   Wikipedia

• Astronomical algorithm — Astronomical algorithms are the algorithms used to calculate ephemerides, calendars, and positions (as in celestial navigation or satellite navigation). Examples of large and complex astronomical algorithms are those used to calculate the… …   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

• astronomical navigational tables — Tables in which the altitude angle of a particular heavenly body as seen from a position close to the observer (i.e., from the assumed position) is given. These consist of two parts: one for selected stars and the other for the sun, the planets,… …   Aviation dictionary

• declination — Refraction Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a… …   The Collaborative International Dictionary of English

• Poles of astronomical bodies — This article is about geographic, magnetic and other poles on planets and other astronomical bodies. For the Earth s poles, see North Pole, South Pole, North Magnetic Pole, and South Magnetic Pole. See also Pole of inaccessibility. The poles of… …   Wikipedia

• York Minster astronomical clock — The York Minster astronomical clock was installed in the North Transept of York Minster in 1955. It was first conceived in 1944 and designed by R d E Atkinson, chief assistant at the Royal Greenwich Observatory. The clock is a memorial to the… …   Wikipedia

• Timeline of astronomical maps, catalogs, and surveys — Timeline of astronomical maps, catalogs and surveys* ca. 1800 BC Babylonian star catalog * ca. 350 BC Shi Shen s star catalog has almost 800 entries * ca. 300 BC star catalog of Timocharis of Alexandria * ca. 134 BC Hipparchus makes a detailed… …   Wikipedia

• d — • declination change in 1 hour (astronomical); • altitude difference; • diameter of a valve inlet in inches …   Maritime acronyms and abbreviations

• telescope — /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… …   Universalium

• Archaeoastronomy — (also spelled archeoastronomy) is the study of how peoples in the past have understood the phenomena in the sky, how they used phenomena in the sky and what role the sky played in their cultures. [Sinclair 2006:13] Clive Ruggles argues it… …   Wikipedia