Koenigsberg Observatory was an astronomical research facility which was attached to the Albertina University of Königsberg. 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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