page_title: Vacuum Tower Telescope
hierarchical_section_title: Vacuum Tower Telescope
caption_attribution_description: VTT, Teide Observatory
context_page_description: 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.
  It was built between 1983 and 1986, with first light in 1988. It has a 70-centimetre diameter primary mirror and a focal length of 46 metres. Thanks to an adaptive optics system KAOS, in operation since spring 2000, it is able to resolve details down to 0.2 arc seconds on the Sun's surface.
context_section_description: 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 (28-inch) diameter 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.
caption: Vacuum Tower Telescope
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