Izaña, Tenerife

Izaña is the longest-running site of BiSON and has been producing data since 1975. Our station is situated at the Observatorio del Teide (in the pyramid-like building). It is operated under a collaboration with the I.A.C., and requires daily attention.

Unlike the more recent stations, this spectrometer is not equatorially mounted. Sunlight is fed into the instrument using a coelostat (shown in the above image) - an arrangement of mirrors which change their orientations during the day to follow the course of the Sun. The output beam is then reflected through a hole in the wall of the pyramid into the instrument.

[Izana site picture]


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Weather Conditions

Real-time cloud cover over Izaña.

[Izana weather]

Go to the BiSON Weather Watcher to see the current cloud conditions over all our stations.