Definitions for "Planisphere"
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.
A projection or representation of the whole or part of a sphere on a plane.
A handheld device which shows the appearance of the night sky at any specified time of day and day of the year.
a handy tool for seeing these relationships
a simple yet indispensable tool for stargazers