====== THEMIS Solar Telescope ====== The "Télescope Héliographique pour l’Étude du Magnétisme et des Instabilités Solaires" (THEMIS) of [[https://www.insu.cnrs.fr/en|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 [[https://www.iac.es/en/observatorios-de-canarias/teide-observatory | Teide Observatory]] of [[https://www.iac.es/en | IAC]], with a base office in La Laguna, in Tenerife, Canary Islands, Spain. /* ;#; 2025 campaign schedule ** ¡¡¡ Call for the [[observation:2025campaign | 2025 observing campaign]] is open !!! ** \\ Deadline for "French" and "International" time" : February 17th, 2026. \\ ;#; */ ;#; ** ¡¡¡ Call for the [[observation:2026campaign | 2026 observing campaign]] is open !!! ** \\ Deadline for "French" and "International" time" : February 13th, 2026. \\ Deadline for "Spanish" time" : January 21st, 2026. ;#; [[science:results:OFRAMEdays2026 | February : Participation of THEMIS at the "OFRAME space weather days 2026" conference in Grenoble (FR).]] \\ [[science:results:KISmeeting | January : Presentation of THEMIS and IBIS at the "Methods and techniques for high-resolution spectro-polarimetry" conference in Freiburg (GER).]] \\ ** [[science:results:IBISNov25 | November : First screw of the Italian IBIS 2.0 Spectro-imager @ THEMIS.]] ** \\ [[science:resources | Downloadable posters highlighting recent high-resolution observations of solar active regions by THEMIS]] \\ Click for information on: \ \ **[[admin:location| How to reach THEMIS locations]]** \ ; \ **[[admin:contacts| How to contact the THEMIS team]]** /* STANDARD PIC */ /* */ /* WINTER PIC */ /* SPRING PIC */ /* */ /* NIGHT PIC */ /* */ === Overview of telescope status === \\ [[http://themis.iac.es/wdata/Webcam/webcam.jpg | THEMIS from VTT webcam]] \\ [[http://themis.iac.es/wdata/Webcam/Domecam.jpg | Webcam of THEMIS Dome]] \\ Latest [[https://view.eumetsat.int/productviewer?v=default | EUMETSAT]] RGB image \\ [[observation:weather | THEMIS weather page]] \\ Last image from \\ THEMIS full Sun guider ---- === The THEMIS telescope and its science === **[[technical|Technical & scientific information about THEMIS]]** \\ [[science:objectives|THEMIS scientific objectives]] \\ [[admin|THEMIS administrative structures]] === Observing with THEMIS === **[[observation| Information for research scientists wishing to observe with THEMIS]]** \\ [[observation:2026campaign | 2026 observing campaign]] \\ [[observation:weather | Weather at THEMIS location and weather forecast]] \\ [[observation:data| THEMIS data products & data access]] === THEMIS Scientific research & results === **[[science| Scientific research with THEMIS]]** \\ [[science:results| THEMIS scientific highlights and news]] \\ [[science:gallery| THEMIS observations and media galleries]] == THEMIS image of the month: January 2026 == THEMIS cable reel \\ \\ Because of the height of the THEMIS spectrograph, about 50 meters of cables are needed to connect the THEMIS control room with the different systems of the telescope and its instrumentation. These cables are used to power the mount and the different motors, to send commend to the telescope and to receive housekeeping and scientific data. This image of the month presents THEMIS cable reel and ill-known although fundamental element for the operations of THEMIS. A specificity of THEMIS is that the whole THEMIS instrumentation hangs under the THEMIS mount and rotates with it as the telescope tracks the Sun. THEMIS cable reel, located at the 4th floor of the THEMIS building permits to avoid the tearing out of the cables as the telescope rotate. About 6 meters of cable length are "stored" within it, compensating the lengthening of the distance as THEMIS moves. [[science:imofmonth|Past images of the month]] === THEMIS telescope management === [[management|Internal pages for the THEMIS team]]\\ [[oldstart|Previous THEMIS front page]]