PLANISPHERE
Etymology
Noun
planisphere (plural planispheres)
Any representation of part of a sphere on a plane surface
(astronomy) Any of several charts of the celestial sphere having an overlay or window that may be adjusted to show the stars visible at a particular time, or from a particular place
Source: Wiktionary
Plan"i*sphere, n. Etym: [Plani- + sphere: cf. F. planisphère. See
Plain, and Sphere.]
Definition: The representation of the circles of the sphere upon a plane;
especially, a representation of the celestial sphere upon a plane
with adjustable circles, or other appendages, for showing the
position of the heavens, the time of rising and setting of stars,
etc., for any given date or hour.
Source: Webster’s Unabridged Dictionary 1913 Edition