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THEMIS Solar Telescope
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The “Télescope Héliographique pour l’Étude du Magnétisme et des Instabilités Solaires” (THEMIS) of CNRS-INSU is a 1-meter-class optical solar telescope, primarily dedicated to studying solar magnetism and the dynamical processes within the Sun’s atmosphere (such as sunspots and solar flares). THEMIS can also perform observation of near-Sun objects such as Mercury and comets. THEMIS is located at the Teide Observatory of IAC, with a base office in La Laguna, in Tenerife, Canary Islands, Spain.
New : November : First screw of the Italian IBIS Spectro-imager @ THEMIS. |
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=== Overview of telescope status ===
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=== The THEMIS telescope and its science ===
Technical & scientific information about THEMIS
THEMIS scientific objectives
THEMIS administrative structures
=== Observing with THEMIS ===
Information for research scientists wishing to observe with THEMIS
2025 observing campaign
Weather at THEMIS location and weather forecast
THEMIS data products & data access
=== THEMIS Scientific research & results ===
Scientific research with THEMIS**
THEMIS scientific highlights and news
THEMIS observations and media galleries
THEMIS image of the month: October 2025
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A view of the THEMIS telescope in its resting safe position seen through the oculus of the dome. The THEMIS dome was designed not only to protect the telescope from inclement weather, but also to avoid direct sunlight heating the floor around the telescope mount. Such heat induces turbulence that can significantly impact the quality of the observations. In order for THEMIS to observe, the oculus has precisely the size of the telescope aperture. While observing the only sunlight that gets in the dome goes in the telescope. Both the telescope and the oculus must then move smoothly and synchronously when tracking the Sun during its diurnal motion. |
THEMIS telescope management
