Paris Observatory
The Meudon refractor was built at Meudon Observatory. It is one of three sites of the Paris Observatory; Meudon Observatory became part of the Paris Observatory in 1926. The Meudon Great refractor is the third largest astronomical refractor of its type in the world. The Meudon refractor is located in the "Grande Coupole" building, which was renovated in the early 2000s.