Planisphere


History

  • The first Planisphere was built in 1624 by Jacob Bartsch.
  • The Planisphere is a star chart calculator consisting of two discs that rotate on the same pivot.
  • By adjusting the inner disc to show the time and the date on the outer disc, the position of the stars can be displayed.
  • It is a modern version of the Astrolabe

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