Fabien Chéreau (born 17 September 1980 in Villefranche-sur-Saône, France) is a French Research Engineer and computer programmer best known for authoring the planetarium software Stellarium, a free, open source astronomy software package which renders 3D photo-realistic skies in real time.
Between the Gornergrat railway station (3,090 m) and the summit is the Kulm Hotel (3,120 m) hosting the new Project "Stellarium Gornergrat" and until 2010 the Kölner Observatorium für SubMillimeter Astronomie KOSMA and before that (until 2005) the Gornergrat Infrared Telescope.