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Updated: May 14, 2025
The Duke of Brunswick had, in 1590, paid a visit to Uraniburg, and had particularly admired an antique brass statue of Mercury, about a cubit long, which Tycho had placed in the roof of the hypocaust or central crypt of the Stiern-berg observatory. By means of a concealed mechanism, it moved round in a circular orbit.
When Rudolph saw the magnificent instruments which Tycho had brought along with him, and had acquired some knowledge of their use, he pressed him to send to Denmark for the still larger ones which he had left at Stiern-berg.
This observatory, which he called Stiern-berg, or the mountain, of the stars, consisted of several crypts, separated by solid walls, and to these there was a subterranean passage from the laboratory in Uraniburg.
Notwithstanding this resolution, he remained with his family in the island, and continued his observations till the spring of 1597, when he took a house in Copenhagen, and removed to it all his smaller and more portable instruments, leaving those which were large or fixed in the crypts of Stiern-berg.
In the museum was the large globe made at Augsburg, see p. 134. In the Stiern-berg Observatory. In the central part, a large semicircle, with a brass limb, and three clocks, shewing hours, minutes, and seconds. Equatorial armillaries of seven cubits, with semi-armillaries of nine cubits. A sextant of four cubits radius.
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