THEMIS Solar Telescope

The THEMIS solar telescope (“Télescope Héliographique pour l’Étude du Magnétisme et des Instabilités Solaires”) 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.

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


The THEMIS telescope and its science

Observing with THEMIS

THEMIS Scientific research & results

THEMIS image of the month: February 2025

Themis NOAA 13959 Sunspot
Observation of the main sunspot of the active region NOAA 13959 on January 15th 2025. This white light broad band image in the red continuum highlights the two “light bridges” of the sunspot. Light-bridges are lanes of bright material that divide the sunspot umbra. The image is the results from 100 acquired snapshots processed with a Knox Thompson image reconstruction method.


Past images of the month

THEMIS telescope management

themis.txt · Last modified: 2025/02/19 15:32 by etienne
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