Tycho Brahe's astronomic sextant being used at a window, 17th century. Instruments like this were used for Brahe's observations of the Great Comet of

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Tycho Brahe's astronomic sextant being used at a window, 17th century. Instruments like this were used for Brahe's observations of the Great Comet of 1577. Danish astronomer Tycho Brahe (1546-1601) was granted an estate on the island of Hven to conduct his research, and funding to build the Uraniborg observatory. From there he generated the most accurate astronomical data of his time. He was exiled to Prague in 1597 and was assisted in his work there by Johannes Kepler until his death. This page is from 'Tychonis Brahe Astronomiae Instauratae Progymnasmata' (1602), prepared for publication after Tycho Brahe's death by Johannes Kepler, who wrote the appendix.

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Size: 2812px × 3754px
Photo credit: © LIBRARY OF CONGRESS, RARE BOOK AND SPECIAL COLLECTIONS DIVISION/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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