Le télescope de 3,6 mètres de l'ESO, géré par l'Observatoire européen austral, est situé à l'observatoire de La Silla au Chili.Il était l'un des plus grands télescopes optiques du monde lors de sa mise en service en 1977, avec un diamètre du miroir primaire de 3,566 m [1].Il a fait l'objet d'une rénovation en 1999. La Silla est ouvert à la visite le samedi sauf en juillet-août. Telescope Overview . The Danish telescope was built by Grubb-Parsons, and has been in use at La Silla since 1979. ... (NTT) is an Alt-Az, 3.58m Richey-Chretien telescope which pioneered the use of active optics. Un nouveau télescope robotisé a obtenu sa première lumière à l'Observatoire de l'ESO à La Silla, au Chili. The 3.58-m New Technology Telescope (NTT) was the first in the world to have a computer-controled mirror. Current Instruments. The telescope has an off-axis mount and the optics are of a Ritchey-Chretien design. It operates the La Silla Paranal Observatory in Chile and has its headquarters in Garching, near Munich, Germany. It is a fibre-fed high resolution echelle spectrograph. Le premier, équipé du spectrographe HARPS, a permis de découvrir plusieurs exoplanètes (ou planètes extrasolaires), dont la première potentiellement habitable, appelée Gliese 581d. The telescope (which is a fork mounted Ritchey-Chretien) was built by Zeiss and has been in use at La Silla since 1984. Il fut un succès technique tant sur le plan optique que scientifique. Current Instruments. The telescope and its enclosure had a revolutionary design for optimal image quality. The telescope is at a geographical location of 70°44'4"543 W 29°15'15"433 S and an altitude of 2335 metres. Also on La Silla is the ESO 3.6-m telescope, the 2.2-m MPG/ESO Telescope, that is on indefinite loan to ESO from the Max-Planck-Gesellschaft, and the ESO 1-m telescope.. Les plus importants pour l’ESO sont le télescope de 3,6 m, le New Technology Telescope (NTT, 3,58 m) et le Max-Planck ESO. HARPS, the High Accuracy Radial velocity Planet Searcher at the ESO La Silla 3.6m telescope is dedicated to the discovery of extrasolar planets. The telescope is at a geographical location of 70.7345W, 29.2584S, and an altitude of 2400 metres above sea level. The ESO 3.6m telescope host the following instrument: HARPS: The High Accuracy Radial velocity Planet Searcher at the ESO La Silla 3.6m telescope is dedicated to the discovery of extrasolar planets. The infrastructure of La Silla is also used by many of the ESO Member States for targeted projects such as the Swiss 1.2-metre Leonhard Euler Telescope, the Rapid Eye Mount telescope (REM) and the TAROT Telescope gamma-ray burst chaser, as well as more common user facilities such as the MPG/ESO 2.2-metre and the Danish 1.54-metre Telescopes.