equatorial circle

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• Equatorial — E qua*to ri*al, n. (Astron.) An instrument consisting of a telescope so mounted as to have two axes of motion at right angles to each other, one of them parallel to the axis of the earth, and each carrying a graduated circle, the one for… …   The Collaborative International Dictionary of English

• equatorial telescope — Equatorial E qua*to ri*al, n. (Astron.) An instrument consisting of a telescope so mounted as to have two axes of motion at right angles to each other, one of them parallel to the axis of the earth, and each carrying a graduated circle, the one… …   The Collaborative International Dictionary of English

• Circle of latitude — Map of Earth Longitude (λ) Lines of longitude appear vertical with varying curvature in this projection, but are actually halves of great ellipses, with identical radii at a given latitude. Latitude (φ) Lines of latitude appear …   Wikipedia

• equatorial system — A set of celestial coordinates based on the celestial equator as the primary great circle. It is usually expressed as declination and an hour angle or a sidereal hour angle. Also called an equinoctial system of coordinates or a celestial equator… …   Aviation dictionary

• List of birds of Equatorial Guinea — This is a list of the bird species recorded in Equatorial Guinea. The avifauna of Equatorial Guinea includes a total of 835 species, of which 3 are rare or accidental.This list s taxonomic treatment (designation and sequence of orders, families,… …   Wikipedia

• Economy of Equatorial Guinea — Infobox Economy country = Equatorial Guinea currency = Communaute Financiere Africaine franc (XAF) year = calendar year organs = UDEAC, ECCAS rank = 108th gdp = $25.69 billion (2005) growth = 18.6% (2005) per capita = $50,200 (2005) sectors =… …   Wikipedia

• Great circle — For fictional interstellar organization called Great Circle, see Andromeda (novel). A great circle divides the sphere in two equal hemispheres A great circle, also known as a Riemannian circle, of a sphere is the intersection of the sphere and a… …   Wikipedia

• List of airports in Equatorial Guinea — List of airports in Equatorial Guinea, sorted by location. TOC List See also * Transport in Equatorial Guinea * * References *cite web url = http://www.icao.int/anb/aig/Taxonomy/R4CDLocationIndicatorsbystate.pdf title = ICAO Location Indicators… …   Wikipedia

• hour circle — noun a great circle on the celestial sphere that passes through both celestial poles • Hypernyms: ↑great circle * * * noun 1. : a circle of the celestial sphere passing through the two poles 2. : the circle upon an equatorial telescope mounted… …   Useful english dictionary

• Hour circle — Hour Hour, n. [OE. hour, our, hore, ure, OF. hore, ore, ure, F. heure, L. hora, fr. Gr. ?, orig., a definite space of time, fixed by natural laws; hence, a season, the time of the day, an hour. See {Year}, and cf. {Horologe}, {Horoscope}.] 1. The …   The Collaborative International Dictionary of English

• hour circle — Astron. a great circle on the celestial sphere passing through the celestial poles and containing a point on the celestial sphere, as a star or the vernal equinox. Also called circle of declination. [1665 75] * * * ▪ astronomy       in astronomy …   Universalium