Observatory of Strasbourg Observatory of Strasbourg The Observatory of Strasbourg is an astronomical observatory in Strasbourg, France. Following the Franco-Prussian War of 1870–71, the city of Strasbourg became part of the German Empire. The University of Strasbourg was refounded in 1872 and a new observatory began construction in 1875 in the Neustadt district. The main instrument was a 50 cm Repsold refractor, which saw first light in 1880 (see Great refractor). At the time this was the largest instrument in the German Empire. In 1881, the ninth General Assembly of the Astronomische Gesellschaft met in Strasbourg to mark the official inauguration.The observatory site
History of Strasbourg its flourishing economy attracted many Germans. This could explain the difference between the rural vote and the one in Strasbourg. After the war, many Germans left Strasbourg and returned to Germany; some of them were denounced by the locals or expelled by the newly appointed authorities. The Saverne Affair remains vivid in the memory of many Alsatians. In 1920, Strasbourg became the seat of the Central Commission for Navigation on the Rhine, previously located in Mannheim, one of the oldest European institutions. It moved into the former Imperial Palace. When the Maginot Line was built, the "Sous-secteur fortifié de Strasbourg"