The Sierra Nevada Observatory (; OSN; code: J86) is located at Loma de Dilar (2896 m altitude) in the Sierra Nevada mountain range, in the province of Granada, Spain; established in 1981. It is operated and maintained by the Instituto de Astrofísica de Andalucía (Institute of Astrophysics of Andalusia - IAA) and contains two Nasmyth telescopes with apertures of 1.5 and 0.9 metres.

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File:SierraNevadaObservatoryOpticalTelescope.JPG|The IAA modern optical telescopes

File:SierraNevadaObservatoryRadioTelescope.JPG|A radio telescope maintained by IRAM

File:Sierra Nevada Observatory Radio Telescope Closeup.jpg|Closeup of the IRAM radio telescope

Observatorio Mojon del Trigo 2014-08-07.jpg|The older observatory of Mojón del Trigo, situated at 37°05′27″N 3°22′55″W

File:OSN - Observatorio de Sierra Nevada - IAA -Telescope 1.5m.jpg|The OSN 1.5-metre telescope

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See also

  • List of largest optical reflecting telescopes
  • Official site