The five hundred mm (19.7 in) mirror telescope was put in place on the outside with the observatory in the early 1960s to switch the enormous telescope, which was quickly shut down at enough time. This telescope is especially well suited for the observation of so-called deep sky objects - https://planetariumjena97520.dgbloggers.com/21731246/the-definitive-guide-to-sehenswürdigkeiten-jena