New Technology Telescope
| Alternative names | NTT |
|---|---|
| Location(s) | Atacama Desert |
| Coordinates | 29°15′32″S 70°44′01″W / 29.25892°S 70.73375°W |
| Altitude | 2,375 m (7,792 ft) |
| First light | March 1989 |
| Telescope style | Ritchey–Chrétien telescope |
| Diameter | 3.58 m (11 ft 9 in) |
| Secondary diameter | 0.875 m (2 ft 10.4 in) |
| Website | www |
| Related media on Commons | |
The New Technology Telescope or NTT is a 3.58-metre Ritchey–Chrétien telescope operated by the European Southern Observatory. It began operations in 1989. It is located in Chile at the La Silla Observatory and was an early pioneer in the use of active optics. The telescope and its enclosure were built to a revolutionary design for optimal image quality.