Differences

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

--- themis [2025/11/18 12:09] – etienne
+++ themis [2026/01/28 16:56] (current) – etienne
@@ Line 9: / Line 9: @@
 ;#;
 <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 > ** New : ** </color> ** [[science:results:IBISNov25 | First screw of the Italian IBIS Spectro-imager @ THEMIS.]] ** \\
+;#;
-<color red > ** New : ** </color> [[science:results:SeminIAC25 | Seminar on THEMIS at the Instituto de Astrofísica de Canarias (ES).]] \\
+<color red > ** ¡¡¡ Call for the [[observation:2026campaign | 2026 observing campaign]] is open !!! ** \\
-[[science:results:SeminLPP | October : Seminar on THEMIS at the Plasma Physics Laboratory, Paris (FR).]] \\
+Deadline for "French" and "International" time" : February 13th, 2026. \\
+Deadline for "Spanish" time" : January 21st, 2026. </color>
+;#;
+[[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]] \\
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 <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>
+/* 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=sciencedsc7357.jpg"><img src="https://www.themis.iac.es/lib/exe/fetch.php?media=dsc7357.jpg" style="width:90%; height:auto;"></a></html>*/
+<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> */
@@ Line 48: / 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 67: / Line 74: @@
 === Observing with THEMIS  ===
 **[[observation| Information for research scientists wishing to observe with THEMIS]]** \\
-[[observation:2025campaign | 2025 observing campaign]] \\
+[[observation:2026campaign | 2026 observing campaign]] \\
 [[observation:weather | Weather at THEMIS location and weather forecast]] \\
 [[observation:data| THEMIS data products & data access]]
@@ Line 77: / Line 84: @@
-== THEMIS image of the month: October 2025 ==
+== THEMIS image of the month: December 2025 ==
-<columns 100% l 40>
-<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:instrumentation:themisthroughoculus.jpg
-"> <img src="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:instrumentation:themisthroughoculus.jpg
-" alt="THEMIS telescope through the dome oculus" style="width: 100%; height: auto;"></a></html> \\
-<newcolumn 60%>
+<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> \\
-A view of the THEMIS telescope in its resting safe position seen through the oculus of the dome. The THEMIS dome was designed not only to protect the telescope from inclement weather, but also to avoid direct sunlight heating the floor around the telescope mount. Such heat induces turbulence that can significantly impact the quality of the observations. In order for THEMIS to observe, the oculus has precisely the size of the telescope aperture. While observing the only sunlight that gets in the dome goes in the telescope. Both the telescope and the oculus must then move smoothly and synchronously when tracking the Sun during its diurnal motion.
+<newcolumn 40%>
+\\
+\\
+\\
+\\
+\\
+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>