Vacuum Tower Telescope

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Vacuum Tower Telescope
The VTT at the Teide Observatory, Tenerife.
Organisation KIS, AIP, MPS[1]
Location(s) Teide Observatory, Tenerife, Canary Islands, Spain
Coordinates 28°18′09″N 16°30′36″W / 28.3024°N 16.5100°W / 28.3024; -16.5100Coordinates: 28°18′09″N 16°30′36″W / 28.3024°N 16.5100°W / 28.3024; -16.5100
Built 1983–1986[2]
First light 1988 (1988)[2]
Diameter 70 cm[1]
Focal length 46m[1]
Mounting Alt-az (coelostat)[1]
Dome Turret

For the vacuum tower telescope at Sacramento Peak, see Richard B. Dunn Solar Telescope.


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).[3]

It has a 70 centimetres (28 in) diameter primary mirror and a focal length of 46 metres (151 ft). Thanks to an adaptive optics system KAOS, in operation since spring 2000,[4][5] it is able to resolve details down to 0.2 arc seconds (150 km) on the Sun's surface.[6][7][8]

See also[edit]


  1. ^ a b c d "Vacuum Tower Telescope". KIS website. Kiepenheuer-Institut für Sonnenphysik. Retrieved 11 January 2014. 
  2. ^ a b "Vacuum Tower Telescope (VTT)". IAC website. Instituto de Astrofísica de Canarias. Retrieved 11 January 2014. 
  3. ^ Kiepenheuer-Institut für Sonnenphysik (KIS)
  4. ^[dead link]
  5. ^[dead link]
  6. ^ Van Der Luehe, Oskar; Soltau, Dirk; Berkefeld, Thomas; Schelenz, Thomas (2003). "KAOS: Adaptive optics system for the Vacuum Tower Telescope at Teide Observatory". In Keil, Stephen L.; Avakyan, Sergey V. Innovative Telescopes and Instrumentation for Solar Astrophysics. Innovative Telescopes and Instrumentation for Solar Astrophysics 4853. p. 187. Bibcode:2003SPIE.4853..187V. doi:10.1117/12.498659. 
  7. ^ Berkefeld, Thomas; Dirk Schmidt (December 2012). "KAOS - a flexible control system for AO and MCAO" (PDF). Real Time Control for Adaptive Optics Workshop 2. Garching: ESO. Retrieved 11 January 2014. 
  8. ^ Rimmele, Thomas R.; Jose Marino (2011). "Solar Adaptive Optics". Living Reviews in Solar Physics 8 (2). Bibcode:2011LRSP....8....2R. doi:10.12942/lrsp-2011-2. Retrieved 11 January 2014. 

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