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--- themis [2025/02/19 15:23] – etienne
+++ themis [2025/07/04 16:03] (current) – etienne
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-The THEMIS solar telescope ("Télescope Héliographique pour l’Étude du Magnétisme et des Instabilités Solaires") 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.
+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.
-Click for information on: \  \  **[[admin:location| How to reach THEMIS locations]]** \ ; \ **[[admin:contacts| How to contact the THEMIS team]]**
+/*
 ;#;
-;<color red > ** ¡¡¡ Call for the [[observation:2025campaign | 2025 observing campaign]] is open !!! ** \\
+<color red > 2025 campaign schedule ** ¡¡¡ Call for the [[observation:2025campaign | 2025 observing campaign]] is open !!! ** \\
-;Deadline for "French" and "International" time" : February 17th, 2025. </color>
+Deadline for "French" and "International" time" : February 17th, 2025. </color>
 ;#;
+*/
+<color red >   ** New :** </color>
+[[science:resources | Downloadable posters highlighting recent high-resolution observations of solar active regions by THEMIS]]\\
+[[science:results:ESTFrance2025 | June : Presentation of THEMIS results at the EST France 2025 Workshop in Paris (FR).]] \\
+[[science:results:SF2A2025 | July : Presentation of THEMIS results at the "Journées de la SF2A" in Toulouse (FR).]] \\
+Click for information on: \  \  **[[admin:location| How to reach THEMIS locations]]** \ ; \ **[[admin:contacts| How to contact the THEMIS team]]**
 <newcolumn 30%>
+/*<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=observatorio_del_teide_daniel_lopez-6_sm.jpg"><img src="https://www.themis.iac.es/lib/exe/fetch.php?media=observatorio_del_teide_daniel_lopez-6_sm.jpg" style="width:90%; height: auto;"></a></html>*/
+/*WINTER PIC*/
+/*<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=science:dsc7357.jpg"><img src="https://www.themis.iac.es/lib/exe/fetch.php?media=dsc7357.jpg" style="width:90%; height:auto;"></a></html>*/
+/* SPRING PIC */
+<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=themis_spring25.jpg"><img src="https://www.themis.iac.es/lib/exe/fetch.php?media=themis_spring25.jpg" style="width:90%; height:auto;"></a></html>
-<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=observatorio_del_teide_daniel_lopez-6_sm.jpg"><img src="https://www.themis.iac.es/lib/exe/fetch.php?media=observatorio_del_teide_daniel_lopez-6_sm.jpg" style="width:90%; height: auto;"></a></html>
-/*{{observatorio_del_teide_daniel_lopez-6_sm.jpg?0x180|THEMIS and El Teide}}*/
 </columns>
 === Overview of telescope status  ===
-<columns 90% c 20% c 20% c 20% c 20% c 20% >
+<columns 100% c 20% c 20% c 20% c 20% c 20% >
 <html> <a href="http://themis.iac.es/wdata/Webcam/webcam.jpg"><img src="http://themis.iac.es/wdata/Webcam/webcam.jpg" style="width:90%; height: auto;"></a></html> \\
@@ Line 57: / Line 66: @@
 === Observing with THEMIS  ===
 **[[observation| Information for research scientists wishing to observe with THEMIS]]** \\
+**[[observation:2025campaign#2025 campaign schedule | Schedule of 2025 observing campaign]]** \\
 [[observation:weather | Weather at THEMIS location and weather forecast]] \\
 [[observation:data| THEMIS data products & data access]]
@@ Line 63: / Line 73: @@
 **[[science| Scientific research with THEMIS]]** \\
 [[science:results| THEMIS scientific highlights and news]] \\
-[[science:results:gallery| THEMIS observations and media galleries]]
+[[science:gallery| THEMIS observations and media galleries]]
+== THEMIS image of the month: June 2025 ==
+<columns 80% l >
+<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:protu:solarfilament_meteospace_2025june05.jpg"> <img src="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:protu:solarfilament_meteospace_2025june05.jpg" alt="Solar filament observations on June 5th 2025." style="width: 100%; height: auto;"></a></html> \\
+In June, during an observation campaign lead by researchers from the Paris Observatory (France) and the University of Wroclaw (Poland), THEMIS observed solar filaments. Solar filaments are large magnetised structure of the solar corona confining cold chromospheric-like plasma. Thanks to its specific magnetic structure, solar filaments plasma, of a temperature of about 10 000°K, "hangs" thermally isolated from the million °K solar corona. As this dense and cool plasma absorbs the light emitted from the lower solar layer, the filament appears dark relatively to the background.\\
-== THEMIS image of the month: February 2025 ==
+The THEMIS observation presented here results from two reconstructed images obtained from two adjacent scans over the solar filament with the THEMIS spectrograph slit. The two scans, which have a 80" range with a 0.5" spatial step, are then stitched together to obtain a larger field of view of about 110"  x 90". Only the reconstructed image in the core of Hα line is displayed here, but THEMIS data allow to sample the full range of the Hα line with a spectral resolution of 4mÅ.\\
+THEMIS high-resolution observations are very complementary to the observations of the [[https://www.oca.eu/fr/lag-physol-projects?option=com_content&view=category&layout=blog&id=295&Itemid=908 | Meteospace/3SOLEIL]] solar surveillance service of OCA/CNRS-INSU, which provide full-Sun high cadence (every 10s) Hα observations, presented on the right panel. \\
-<columns 40% l >
+Thanks to its high-resolution, as illustrated in the left panel, THEMIS permits to analyse the filamentary structure of the solar filament and understand its magnetic field thanks to THEMIS polarised measurements. In particular, the magnetic properties of the "barbs" of the filament, the features which extend away from the "spine" (the filament axis), remains ill understood and an active topic of research.
-<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:ar:ar_noaa13959_wl_knoxthompson100_fc_250115.png"> <img src="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:ar:ar_noaa13959_wl_knoxthompson100_fc_250115.png" alt="Themis NOAA 13959 Sunspot" style="width: 100%; height: auto;"></a></html>
-\\
-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.
 </columns>
-\\
+[[science:imofmonth|Past images of the month]]
-[[results:gallery:imofmonth|Past images of the month]]