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THEMIS Solar Telescope

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.

February : The THEMIS team supports the call to French research personnel to co-sign the white paper in support to the European Solar Telescope (EST) project (click here)

February : Participation of THEMIS at the "OFRAME space weather days 2026" conference in Grenoble (FR).
January : One year visit at THEMIS of PhD student Jorge Romero Castañeda (LPP) in the context of the ANR JET2SB project.
January : Presentation of THEMIS and IBIS at the "Methods and techniques for high-resolution spectro-polarimetry" conference in Freiburg (GER).
November : First screw of the Italian IBIS 2.0 Spectro-imager @ THEMIS.

Click for information on: How to reach THEMIS locations ; How to contact the THEMIS team

Overview of telescope status

THEMIS from VTT webcam

Webcam of THEMIS Dome

Latest EUMETSAT RGB image

THEMIS weather page

Last image from
THEMIS full Sun guider

THEMIS image of the month: February 2026

A summary figure of THEMIS level 1 data products. These are the datasets that are directly generated during an observation with THEMIS. The full Sun and slitjaw images are context images that are mainly used to have basic information of the solar condition on the Sun and the location of the high resolution observations. They are not really meant for scientific use, as equivalent data of a better quality can be obtained by other instruments. The main scientific data are the broadband images to study the dynamics of the solar photosphere at high-cadence and high spatial resolution, and the Spectral images from which physical properties such as composition, density, temperature, velocities and magnetic field of the emitting solar plasma can be derived.

Past images of the month

THEMIS telescope management

Internal pages for the THEMIS team
Previous THEMIS front page

THEMIS Solar Telescope

Overview of telescope status

The THEMIS telescope and its science

Observing with THEMIS

THEMIS Scientific research & results

THEMIS image of the month: February 2026

THEMIS telescope management