Télescope Heliographique pour l'Etude du Magnétisme et des Instabilités Solaries (THEMIS) Solar Telescope: 90 cm diameter, built 1996, operated by France and Italy.[2][3]
STELLA Telescopes (STELLA I and STELLA II) robotic telescopes: 120 cm STELLA is an abbreviation of STELLar Activity, operated by Leibniz Institute for Astrophysics (AIP) with the collaboration of the IAC, put in operation 2006.
SPECULOOS Northern Observatory (SNO): 1-meter telescopes, one telescope (Artemis) completed in June 2019
PIRATE: (Physics Innovations Robotic Astronomical Telescope Explorer Mark IV): 61 cm robotic telescope operated remotely by the Open University
COAST: (COmpletely Autonomous Survey Telescope) 43 cm robotic telescope operated remotely by the Open University
Two-meter Twin Telescope (TTT): robotic telescopes of 80 cm TTT1 and TTT2 and 2 meters TTT3 and TTT4. TTT is a project of Light Bridges in collaboration with IAC (Spain). Built in 2022.
Radio telescopes for cosmic microwave background astronomy
The observatory has a visitors' centre and a residencia (hostel) for astronomers. Brian May helped construct a building there to study interplanetary dust.
List of discovered minor planets
The Minor Planet Center credits the discovery of several minor planets directly to the observatory.[6]
In 1995, Rafael Rebolo López, María Rosa Zapatero-Osorio and Eduardo L. Martín published their discovery of Teide-1, which they found through optical observations using the 0.8 meter telescope at Teide Observatory.[7]
Climate
The position where the observatory is situated has a mediterranean climate (KöppenCsb), with average temperature features reminiscent of southern England. This renders in warm summers that averages around 23 °C (73 °F) with light frosts being possible and sometimes happening in winter. Extremes are moderated by its marine features, which combined with the altitude keeps temperatures below 30 °C (86 °F) even during heat waves, and in spite of the altitude the marine features are strong enough to prevent severe frosts. Sunshine levels, as typical of the nearby lowland arid climates, are high throughout the year. Many alpine areas at further distance from the equator are above the tree line at this elevation, but Teide is far above even any subarctic temperatures due to its position on the 28th parallel north.
Climate data for Izaña Observatory (1991–2020 normals)
The useful observing time is given as 78% and the median FWHM seeing from DIMM measurements is given as 0.76" and 0.70" at two sites near the Carlos Sánchez Telescope.[11]