Leonhard Euler Telescope in the foreground on right side, the ESO 3.6 m Telescope
is in the distance
Leonhard Euler Telescope, or Swiss 1.2-m Leonhard Euler Telescope, is a 1.2-metre (3.9 ft) diameter aperture reflecting telescope at the Geneva Observatory at La Silla Observatory. It is used for astronomy, and runs the CORALIE echelle spectrograph to search for planets. Its first planet discovery was of one in orbit around Gliese 86. It was determined to be a 4MJ planet with an orbital period of 15.8 earth days. In addition, many other extra solar-system planets were discovered or examined after this discovery.
The observatory is operated by the University of Geneva of Switzerland since the telescopes was finished in 1998. The telescope is named for famous mathematician Leonhard Paul Euler.
The Euler 1.2 and the Mercator Telescope were part of the Southern Sky extrasolar Planet search Programme which has discovered numerous extrasolar planets.
Coordinates: 29°15′34″S 70°43′59″W / 29.25956°S 70.73297°W