Differences

This shows you the differences between two versions of the page.

--- themis [2025/03/01 10:42] – etienne
+++ themis [2026/01/13 16:21] (current) – etienne
@@ Line 2: / Line 2: @@
 <columns 100% 70%>
-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, 2026. </color> \\
 ;#;
 */
+;#;
+<color red > ** ¡¡¡ 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. </color>
+;#;
+** November : [[science:results:IBISNov25 | First screw of the Italian IBIS 2.0 Spectro-imager @ THEMIS.]] ** \\
+November: [[science:results:SeminIAC25 | Seminar on THEMIS at the Instituto de Astrofísica de Canarias, La Laguna (ES).]] \\
+[[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]]**
 <newcolumn 30%>
+/* STANDARD PIC */
+/*<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:gallery:building:themis_winter26.jpg"><img src="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:building:themis_winter26.jpg" style="width:90%; height:auto;"></a></html>
+/* SPRING PIC */
+/*<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:building:themis_spring25"><img src="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:building:themis_spring25.jpg" style="width:90%; height:auto;"></a></html> */
+/* NIGHT PIC */
+/*<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:building:img_4553-jpg.jpg"><img src="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:building:img_4553-jpg.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 38: / Line 55: @@
 <newcolumn>
-<html> <a href="http://161.72.129.175"><img src="http://themis.iac.es/wdata/Wwheater/LatestMto.png" style="width:100%; height: auto;"></a></html> \\
+<html> <a href="https://themis.iac.es/wdata/Wwheater/LatestMto.png"><img src="http://themis.iac.es/wdata/Wwheater/LatestMto.png" style="width:100%; height: auto;"></a></html> \\
 [[observation:weather | THEMIS weather page]]
@@ Line 57: / Line 74: @@
 === 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]]
@@ Line 63: / Line 81: @@
 **[[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: March 2025 ==
+== THEMIS image of the month: December 2025 ==
-<columns 70% l >
-<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:ar:noaa13981_c3flare_20250206_113010.jpg"> <img src="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:ar:noaa13981_c3flare_20250206_113010.jpg" alt="Themis NOAA 13981 during C3.3-class flare" style="width: 100%; height: auto;"></a></html>
+<columns 100% l 60>
+<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:ar:stokesmap_noaa14100.jpg
+"> <img src="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:ar:stokesmap_noaa14100.jpg
+" alt="Stokes maps of active region 14100" style="width: 100%; height: auto;"></a></html> \\
+<newcolumn 40%>
 \\
-THEMIS observations of the east sunspot group of the active region NOAA 13981 on February 6th 2025. The left image is a Knox-Thompson reconstructed from red continuum broadband camera. The right panels are intensity maps reconstructed from spectral observations by the MTR2 spectrograph observing the H_\alpha absorption line. Theses maps are reconstructed from a scan by the telescope of the active region. While these intensity images have a lower spatial resolution, they provide a wealth of spectroscopic information. The region was observed during a flare, as can be noted by the typical ribbon-shape emission in the H_\alpha line centre. This emission is absent from the continuum emission, indicating a chromospheric emission phenomena. Meanwhile, the red wing maps (H_\alpha+1Å and H_\alpha+1Å) display dark absorbing material above the location of the flare ribbons, signature of down-flowing dense material, a phenomena nicknamed "coronal rain".
+\\
+\\
+\\
+\\
+Measuring magnetic field signature in the solar atmosphere is the "raison d'être" of THEMIS. Since its renovation, the THEMIS team has had as a main objective of producing vector magnetograms (maps of the magnetic field vector) while observing with the [[technical:tao|THEMIS adaptive optics (TAO)]]. This December 2025 image of the month, presents one of the ultimate steps toward this goal, presenting the so-called [[https://en.wikipedia.org/wiki/Stokes_parameters | Stokes maps]] that describe the polarisation of the light. The figure shows that in the centre of the Fe I line (at 630,1 nm) a strong polarization signal is captured by the spectropolarimetric measurement of THEMIS in active region NOAA 14100, obtained in May, indicating of the presence of magnetic field. In the continuum near that line, no polarisation signal is observed, confirming the absence of polarisation contamination in THEMIS light path. From such Stokes map, a magnetic inversion code shall then be used to determine the magnetic fields that could induce these light polarization signal, and thus produce magnetograms with TAO.
 </columns>
-\\
-[[results:gallery:imofmonth|Past images of the month]]
+[[science:imofmonth|Past images of the month]]