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Celestial globe with clockwork; 1579; partly gilded silver, gilded brass and steel; overall: 27.3 cm × 20.3 cm × 19.1 cm (10.7 in × 8.0 in × 7.5 in), diameter of the globe: 14 cm (5.5 in); from Vienna; Metropolitan Museum of Art (New York City) Celestial globe; after 1621; paper, brass, oak and stained and light-colored wood; overall: 52.1 cm × 47.3 cm (20.5 in × 18.6 in), diameter of ...
A globe is a spherical model of Earth, of some other celestial body, or of the celestial sphere. Globes serve purposes similar to maps, but, unlike maps, they do not distort the surface that they portray except to scale it down. A model globe of Earth is called a terrestrial globe. A model globe of the celestial sphere is called a celestial globe.
Visualization of a celestial sphere. In astronomy and navigation, the celestial sphere is an abstract sphere that has an arbitrarily large radius and is concentric to Earth.All objects in the sky can be conceived as being projected upon the inner surface of the celestial sphere, which may be centered on Earth or the observer.
The celestial spheres, or celestial orbs, were the fundamental entities of the cosmological models developed by Plato, Eudoxus, Aristotle, Ptolemy, Copernicus, and others. In these celestial models, the apparent motions of the fixed stars and planets are accounted for by treating them as embedded in rotating spheres made of an aetherial ...
The meridian on the celestial sphere. An observer's upper meridian, a semicircle contains their zenith and both celestial poles; the observer's local meridian is the semicircle that passes through their zenith and the north and south points of their horizon.
A Large Persian Brass Celestial Globe with an ascription to Hadi Isfahani and a date of 1197 AH/ 1782–3 AD of typical spherical form, the globe engraved with markings, figures and astrological symbols, inscriptive details throughout. Celestial globes were used primarily for solving problems in celestial astronomy. Today, 126 such instruments ...
Probably, the celestial coordinates of the junction stars of the lunar mansions were determined by the armillary sphere since the seventh century or so. There was also a celestial globe rotated by flowing water."
The Ecliptic: the Sun's Annual Path on the Celestial Sphere Durham University Department of Physics; Seasons and Ecliptic Simulator University of Nebraska-Lincoln; MEASURING THE SKY A Quick Guide to the Celestial Sphere James B. Kaler, University of Illinois; Earth's Seasons Archived 13 October 2007 at the Wayback Machine U.S. Naval Observatory