Moveable Planisphere of the Heavens at Every Minute
A planisphere is a portable device designed to aid in the study of stars and constellations visible in the night sky at any given date and time, generally for a particular location. This particular planisphere, created by Henry Whitall in 1862, depicts a dark blue sky with the constellations, centered on the latitude of Philadelphia. The moveable planisphere is to Astronomy the same as the map to Geography.
FI Catalog # 6912 A
The Franklin Institute Astronomy Collection
Moveable Planisphere of the Heavens at Every Minute (FI Catalog # 6912 A) from the collections of The Franklin Institute, Philadelphia, PA. USA
T&E For Science & Technology, Astronomical T&E
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