Koenigsberg Observatory (; obs. code: 058) was an astronomical observatory and research facility which was attached to the Albertina University in Königsberg, what is now Kaliningrad, Russia. The observatory was destroyed by Royal Air Force bombs in August 1944 during the Second World War.

Only the reduit (interior of the building) remained from the bastion. The building is a semicircular two-storey building with a brick vault. Nowadays, the building is considered a regional architectural monument.

Description

thumb|upright=0.4|left|[[Joseph von Fraunhofer|Fraunhofer's heliometer]]

It was founded in 1810 and started working in 1813. Well-known astronomers who used the observatory included Friedrich Wilhelm Bessel, Friedrich Wilhelm Argelander, Arthur Auwers and Hermann Struve. In 1838, the parallax of a star was determined successfully for first time by Bessel using a heliometer of Fraunhofer.

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ID003728 B161 Sternwarte.jpg|Koenigsberg Observatory

Koenigsberg observatory foto.jpg|Observatory (unknown date)

Koenigsberg observatory.jpg|Observatory in 1830

Kaliningrad - Astronomical Bastion.jpg|Ruins of observatory in 2021

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  • Koenigsberg observatory, illustration, sciencephoto.com