Vopel Armillary Sphere

Description
This small instrument shows the relative positions of the equator, ecliptic, and other important astronomical circles. The signature on the Tropic of Cancer reads: “CASPAR VOPEL ARTE.” At the center, presumably representing the earth, is a small ivory ball.
Caspar Vopel (1511-1561) worked in Cologne teaching mathematics and making mathematical instruments.
Location
Currently not on view
Object Name
armillary sphere
date made
ca 1550
maker
Vopel, Caspar
Physical Description
brass (overall material)
Measurements
overall: 26.5 cm x 13 cm; 10 7/16 in x 5 1/8 in
ID Number
PH*327302
catalog number
327302
accession number
272528
subject
Astronomy
Astronomy
Measuring & Mapping
Trigonometry
Spherical Trigonometry
See more items in
Medicine and Science: Physical Sciences
Trigonometry
Spherical Trigonometry
Astronomy
Data Source
National Museum of American History, Kenneth E. Behring Center

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