Leiden Observatory
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Leiden Observatory is an astronomical institute of Leiden University, in the Netherlands. Established in 1633 to house the quadrant of Willebrord Snellius, it is the oldest operating university observ
Oude Sterrewacht, Leiden
The 17th century (1600s), Quadrant instrument of Professor Willem Snel van Royen, displayed in a modern exhibit.
The second building to house the Leiden Observatory (built in 1860). This building now houses part of the law faculty. Two of the optical telescope domes can be seen on the roof.
Einstein's Chair
H. G. van de Sande Bakhuyzen
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Hendricus Gerardus van de Sande Bakhuyzen was a Dutch astronomer. His surname, van de Sande Bakhuyzen, is sometimes erroneously given as Backhuyzen or Bakhuysen. His first name is sometimes given as H
Leiden Observatory
…Pieter Nieuwland 1799–1805 Jan Frederik van Beeck Calkoen 1811–1826 Cornelus Ekama 1826–1837 Pieter Uijlenbroek 1837–1872 Frederik Kaiser 1872–1908 H. G. van de Sande Bakhuyzen 1908–1918 E. F. van de Sande Bakhuyzen 1918–1934 Willem de Sitter 1934–1945 Ejnar Hertzsprung 1945–1970 Jan Oort 1996–2003 George K. Miley 2004–2012…
H. G. van de Sande Bakhuyzen.
Grave of Hendricus Gerardus van de Sande Bakhuyzen (righthand side) on the Groenesteeg graveyard in Leiden, the Netherlands. Grave number 506