Illustration of the brass azimuth quadrant from Tycho Brahe's observatory at Uraniborg, Hven, Denmark (now Sweden). This quadrant had a radius of 65 c

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Illustration of the brass azimuth quadrant from Tycho Brahe's observatory at Uraniborg, Hven, Denmark (now Sweden). This quadrant had a radius of 65 centimetres. It was used for Brahe's observations of the Great Comet of 1577. Brahe (1546-1601) is considered the greatest astronomical observer of the pre-telescopic era. This illustration is from a 1603 edition of Brahe's 'De Mundi Aetherei Recentioribus Phaenomenis Liber Secundus' (Second Book About Recent Phenomena in the Celestial World) first published in 1588.

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Size: 2842px × 3698px
Photo credit: © LIBRARY OF CONGRESS/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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