The Physikalischer Verein Frankfurt operates two observatory sites: the “public observatory” in the building of the “Alte Physik,” directly in Frankfurt. In addition, the “Hans-Ludwig-Neumann Observatory” on the Kleiner Feldberg in the Taunus. The latter consists of two 4.2 meter Classic domes from Baader Planetarium. In the observatory, which is accessible to association members, instruments are continuously in use for deep-sky photography, but also for solar and lunar observation.








