title: Sierra Nevada Observatory
text: # Sierra Nevada Observatory
  
  The Sierra Nevada Observatory (Spanish: Observatorio de Sierra Nevada; 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.
  
  ## Gallery
  
  * The IAA modern optical telescopes
  * A radio telescope maintained by IRAM
  * Closeup of the IRAM radio telescope
  * The older observatory of Mojón del Trigo, situated at 37°05′27″N 3°22′55″W
  * The OSN 1.5-metre telescope
  