The Observatoire de Haute-Provence (OHP) of the CNRS (the French National Center for Scientific Research) founded in 1937 is famous internationally for excellence in astronomy (exoplanet researchespecially: the first discovery in 1995 using the telescope of 1.93 m and its spectrograph Sophie»). also known as atmospheric science (study of the ozone layer) and ecology (O3HP). Very active in the dissemination of scientific culture, it receives more than 11000 visitors per year.