New Technology Telescope
The 3.58-metre New Technology Telescope (NTT) was inaugurated in 1989, and it broke new ground for telescope engineering and design.
The main mirror is flexible and its shape is actively adjusted by actuators during observations, using a reference star, to preserve the optimal image quality. The secondary mirror position is also actively controlled in three directions.
This technology, developed by ESO, known as active optics, is now applied to all major modern telescopes, such as the Very Large Telescope at Cerro Paranal and the future Extremely Large Telescope.
The design of the octagonal enclosure housing the NTT is another technological breakthrough. The telescope dome is relatively small, and is ventilated by a system of flaps that makes air flow smoothly across the mirror, reducing turbulence and leading to sharper images.
La Silla: NTT enclosure:
- Height: 1800 cm
- Diameter: 1700 cm
Star formation, protoplanetary systems, Galactic center, spectroscopy.
- ESO Faint Object Spectrograph and Camera version 2 (EFOSC)
- ESO Multi-Mode Instrument (EMMI)
- Son of ISAAC (SOFI)
- For scientists: More details can be found on the telescope page.