The Sternwarte Neanderhöhe Hochdahl e.V. offers a unique platform for astronomical education and events in NRW with its observatory, the planetarium (Planetarium “Stellarium Erkrath”) with 62 seats and a diameter of 10 meters as well as a training building for computers and electronics. Every year, we welcome around 28,000 visitors from the entire western part of North Rhine-Westphalia and beyond.