equatorium
Sign in to savethumb|Equatorium from Johannes Schöner
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- Subclass of
- astronomical instrument
- Image
- Äquatorium 01.jpg
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- Commons category
- Equatorium
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Encyclopedic overview
7 sectionsContents
- History
- Variations
- Astrolabe compared with equatorium
- Uses
- See also
- References
- Further reading
thumb|Equatorium from Johannes Schöner
An equatorium (plural, equatoria) is an astronomical calculating instrument. It can be used for finding the positions of the Moon, Sun, and planets without arithmetic operations, using a geometrical model to represent the position of a given celestial body.
Excerpted from Wikipedia’s “equatorium” article, available under the CC BY-SA 4.0 licence.