Thüringer Landessternwarte Tautenburg
In October 1960 the 2 m telescope built by Carl Zeiss Jena was inaugurated in the Tautenburg Forest near Jena and the new Karl Schwarzschild Observatory was founded. The Schmidt variant of this telescope is to this day the largest astronomical wide-field camera in the world and it was the main observational instrument of the astronomers of the GDR.