The International Planetarium Society (IPS) is the largest association of professionals and non-professionals related to a planetarium. It operates worldwide and takes care of various aspects in the planetarium business: coordination of events, motivation of staff and improvement of strategies. It was founded in 1970. One of the main tasks is to organise an international conference which is held in a 2-year's intervall where the members can exchange their knowledge. Also, a quaterly journal Planetarian is published. Several commitees of the IPS are connected to special areas of interest, e.g. the publication's, the portable planetarium's, the fulldome's, the internet, or technology commitee.
Web: http://www.ips-planetarium.org/