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Star chart

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This article is about the astronomical instrument. For the fictional object in the Star Wars Universe, see Star Map (Star Wars).
A star chart is a map of the night sky. They are used to identify and locate astronomical objects such as stars, constellations and galaxies. They have been used for human navigation since time immemorial. A planisphere is a type of star chart. Note that a star chart differs from an astronomical catalog which is a listing or tabulation of astronomical objects for a particular purpose.

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