The zodiacal armillary instrument,one of the instruments at Tycho Brahe's great observatory at Uraniburg on the island of Hveen,Denmark (now Ven,Sweden). The instrument was a copy of one designed by the Greek astronomer Ptolemy and was used to determine the latitudes and longitudes of stars. Two astronomers were needed for each observation,one sighting a fixed star whose position is known,the other sighting the unknown star. The illustration is from Tycho's book Astronomiae Instauratae Mechanica,published in Wandesburgi in 1598 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
Taille de l’image : | 3513 px × 5142 px |
Model Release : | Non requis |
Property Release : | Non requis |
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