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Planisphere (disambiguation)

Topics referred to by the same term From Wikipedia, the free encyclopedia

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Planisphere or planisphaerium may refer to:

Astronomy and cartography

  • Planisphere or Planisphaerium, a 2nd-century AD book by Claudius Ptolemy about mapping the celestial sphere onto a flat plane using the stereographic projection to make a star chart
  • Planispheric astrolabe, a device consisting of a planisphere joined to a dioptra, used for observing stars and performing astronomical calculations
  • Planisphere, a cardboard or plastic adjustable star chart based on the planispheric astrolabe
  • Planisphere projection, or stereographic projection, a conformal map projection which takes spherical circles to planar circles
  • Planisphere, a historical name for star chart
  • Planisphere, a historical name for world map (see also History of cartography)
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