Tycho Brahe's astronomic sextant, 17th century

Numéro d’image : 12644918
Tycho Brahe's astronomic sextant, 17th century
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.
Licence : Droits gérés
Crédit: Science Photo Library / Library of Congress, Rare Book and Special Collections Division
Taille de l’image : 2812 px × 3754 px
Model Release : Non requis
Property Release : Non requis
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