Vacuum Tower Telescope

Vacuum Tower Telescope
The VTT at the Teide Observatory, Tenerife.
Location(s)Spain
Coordinates28°18′08″N 16°30′36″W / 28.30233°N 16.51003°W / 28.30233; -16.51003
Diameter70 cm (2 ft 4 in)
Focal length46 m (150 ft 11 in)
Websitewww.kis.uni-freiburg.de?id=575&L=1
Location of Vacuum Tower Telescope
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The Vacuum Tower Telescope is an evacuated-optics solar telescope located at the Teide Observatory on Tenerife in the Canary Islands. It is operated by the Kiepenheuer-Institut für Sonnenphysik (KIS).

It was built between 1983 and 1986, with first light in 1988. It has a 70-centimetre-diameter (28 in) primary mirror and a focal length of 46 metres (151 ft). Thanks to an adaptive optics system KAOS (Kiepenheuer-institute Adaptive Optic System), in operation since spring 2000, it is able to resolve details down to 0.2 arc seconds (150 km) on the Sun's surface.

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