The Observatory of Strasbourg, an astronomical observatory, houses the Centre de données astronomiques de Strasbourg, a database for the collection and distribution of astronomical information.
The construction of this observatory began in 1875 post the refounding of the University of Strasbourg in 1872. The main instrument was a 50 cm Repsold refractor, which saw first light in 1880 and was officially inaugurated in 1881 during the ninth General Assembly of the Astronomische Gesellschaft. Then it was the largest instrument in the German Empire.
The observatory site was selected primarily for instruction purposes and political symbolism, rather than the observational qualities. Upto the period of 1914, there was not mch research work going on in the observatory due to lack of sufficient man power. The main observations were of comets and variable stars.
Centre de données astronomiques de Strasbourg in this observatory also includes SIMBAD, a reference database for astronomical objects, VizieR, an astronomical catalogue service and Aladin, an interactive sky atlas. The modern extension of the building houses Planétarium de Strasbourg. The observatory is surrounded by the Jardin botanique de l’Université de Strasbourg.
In the vaulted basement below the observatory, a University-administered museum is located. Called Crypte aux étoiles (“star crypt“), it displays old telescopes and other antique astronomical devices such as clocks and theodolites.





