Celestial Globe


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celestial globe

[sə′les·chəl ′glōb]
(astronomy)
A small globe representing the celestial sphere, on which the apparent positions of the stars are located. Also known as star globe.

Celestial Globe

 

a globe depicting the celestial sphere with a network of equatorial coordinates and with the ecliptic and the brightest stars. It is usually fitted within two mutually perpendicular rings that are marked off in degrees, which depict the horizon and meridian of a given location. The globe’s axis of rotation can be fixed at any angle to the plane of the horizontal ring. Thus the globe can be placed in such a way as to depict the position of the celestial sphere for a given location at any moment. The celestial globe is used in solving problems of spherical astronomy related to the diurnal and annual motions of the earth.

References in periodicals archive ?
The Pair of Terrestrial and Celestial Globes are an extremely fine example of Father Vicenzo Maria Coronelli's eminent career as a globe-maker; the original gores are presented as they were intended to be seen and mounted on spectacular modern stands, both with four supporting African figures, in antique style by Greaves and Thomas.
Caption: WINDOW TO THE UNIVERSE The aluminum panels on the interior of the dome were custom-printed with mirror-reversed images from Vincenzo Coronelli's celestial globe.
Twelve ceiling compartments were to have the forty-eight Ptolemaic constellations, and hinged central compartments could be opened so that terrestrial and celestial globes would descend.
Unlike Vermeer's The Geographer, which highlights the cartographer himself, his painting of The Astronomer is dominated by a luminous celestial globe which the scientist seems to be studying, reflecting on his place in the universe.
His style of portraying the sky mirror-reversed as if on a celestial globe was already out of fashion by his time.
However, there is another working celestial globe that uses holes in a dome to produce a realistic illusion of the sky.
The famous Farnese Atlas, a statue on display in Naples dating back to the 2nd century AD, depicts the mythological Titan bearing the weight of a celestial globe.
But it was regarded as part of Leo and had no astronomical autonomy until 18 centuries later, when Gerardus Mercator installed it on his celestial globe in 1551.
The architecture is Islamic, but the constellations, reversed as they would be seen on a celestial globe, are Greek.
Roughly four centuries later, Sagittarius was being shown as a centaur on the celestial globe supported by the Farnese Atlas.
There is no evidence Eudoxus had any kind of mechanical device that made an operating model out of an abstract theory, but he did have a celestial globe that let him delineate the constellations.
Oddly, the sky is painted on the concave ceiling as it would be seen outside of the celestial sphere, and that has led interpreters to conclude the fresco is based upon an inscribed celestial globe.