Vacuum Tower Telescope

Vacuum Tower Telescope
	The VTT at the Teide Observatory, Tenerife.
Location(s)	Spain
Coordinates	28°18′08″N 16°30′36″W / 28.30233°N 16.51003°W
Diameter	70 cm (2 ft 4 in)
Focal length	46 m (150 ft 11 in)
Website	www.kis.uni-freiburg.de?id=575&L=1
	Location of Vacuum Tower Telescope
	Related media on Commons
	[edit on Wikidata]

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).^[1]^[2]

It was built between 1983 and 1986, with first light in 1988.^[3] 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,^[4]^[5] it is able to resolve details down to 0.2 arc seconds (150 km) on the Sun's surface.^[6]^[7]^[8]

^ Kiepenheuer-Institut für Sonnenphysik (KIS)
^ "Vacuum Tower Telescope". KIS website. Kiepenheuer-Institut für Sonnenphysik. Retrieved 11 January 2014.
^ "Vacuum Tower Telescope (VTT)". IAC website. Instituto de Astrofísica de Canarias. Retrieved 11 January 2014.
^ "KAOS- The Kiepenheuer-institute Adaptive Optic System". Archived from the original on June 10, 2007. Retrieved May 31, 2007.
^ "Solar observations of highest resolution obtained with Adaptive Optics and Speckle-Interferometry at the VTT". Archived from the original on June 10, 2007. Retrieved May 31, 2007.
^ 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. (eds.). Innovative Telescopes and Instrumentation for Solar Astrophysics. Vol. 4853. p. 187. Bibcode:2003SPIE.4853..187V. doi:10.1117/12.498659. S2CID 120643967.
^ 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. {{cite journal}}: Cite journal requires |journal= (help)
^ Rimmele, Thomas R.; Jose Marino (2011). "Solar Adaptive Optics". Living Reviews in Solar Physics. 8 (2): 2. Bibcode:2011LRSP....8....2R. doi:10.12942/lrsp-2011-2. PMC 4841189. PMID 27194964.

[KIS-1] Kiepenheuer-Institut für Sonnenphysik (KIS)

[vtt_kis-2] "Vacuum Tower Telescope". KIS website. Kiepenheuer-Institut für Sonnenphysik. Retrieved 11 January 2014.

[vtt_iac-3] "Vacuum Tower Telescope (VTT)". IAC website. Instituto de Astrofísica de Canarias. Retrieved 11 January 2014.

[4] "KAOS- The Kiepenheuer-institute Adaptive Optic System". Archived from the original on June 10, 2007. Retrieved May 31, 2007.

[5] "Solar observations of highest resolution obtained with Adaptive Optics and Speckle-Interferometry at the VTT". Archived from the original on June 10, 2007. Retrieved May 31, 2007.

[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. (eds.). Innovative Telescopes and Instrumentation for Solar Astrophysics. Vol. 4853. p. 187. Bibcode:2003SPIE.4853..187V. doi:10.1117/12.498659. S2CID 120643967.

[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. {{cite journal}}: Cite journal requires |journal= (help)

[8] Rimmele, Thomas R.; Jose Marino (2011). "Solar Adaptive Optics". Living Reviews in Solar Physics. 8 (2): 2. Bibcode:2011LRSP....8....2R. doi:10.12942/lrsp-2011-2. PMC 4841189. PMID 27194964.

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