Differences

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

--- themis [2025/06/26 11:41] – etienne
+++ themis [2025/08/12 16:13] (current) – etienne
@@ Line 12: / Line 12: @@
 ;#;
 */
+<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>*/
-<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=dsc7357.jpg"><img src="https://www.themis.iac.es/lib/exe/fetch.php?media=dsc7357.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>
 </columns>
@@ Line 54: / 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: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 64: / Line 76: @@
-== THEMIS image of the month: May 2025 ==
+== THEMIS image of the month: July 2025 ==
-<columns 80% l >
+<columns 100% l 40%>
-<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:mercury:mercury_mangano2013.jpg"> <img src="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:mercury:mercury_mangano2013.jpg" alt="Hourly dynamics of Sodium emission on Mercury" style="width: 100%; height: auto;"></a></html>
-**May was Mercury Month a theMis!**\\
- This past month of May took place the usual annual observation campaign of Mercury, led by researchers from the Italian National Institute of Astrophysics (INAF/IAPS in Rome) in collaboration with scientist from the French Laboratoire Atmosphères, Observations Spatiales (LATMOS/CNRS-UVSQ-SU-CNES in Paris). \\
+<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:instrumentation:spectro_with_light.png"> <img src="https://www.themis.iac.es/lib/exe/fetch.php?media=science:gallery:instrumentation:spectro_with_light.png" alt="A peek inside THEMIS MTR2 spectrograph" style="width: 100%; height: auto;"></a></html> \\
-In a sequence of scans of the exosphere of Mercury obtained some years ago, THEMIS could follow the hourly evolution of the reconstructed distribution of the Sodium emission. The figure displays the intensity emission (in kiloRayleigh) after preliminary reduction, including bias and sky background subtraction, as well as spectral and ﬂux calibrations. Solid white line highlights the disk of the planet, the cross indicating the center of the disk. Mercury disk is 6.0'' wide. The Sun is located on the left. \\
-The images show the two peaks of higher intensity at high hermian latitude in the direction of the Sun. These peaks of sodium emission are roughly co-spatial with the positions of the magnetic footprints.  Their evolution is due to the link of such emission with the Mercury magnetosphere and the interaction with the varying solar wind particles penetrating the magnetosphere and flowing to the surface.
+<newcolumn 60%>
-Adapted from [[https://doi.org/10.1016/j.pss.2013.03.002]| Mangano et al. 2013]]. \\
+If one could sneak inside [[technical:mtr2 | MTR2 spectrograph]] while THEMIS is observing, this is what one would see looking down. The picture shows the beautiful work of decomposing the white solar light into small ranges of electromagnetic spectrum that are of interest for researchers to study the physical properties of the Sun. \\
- </columns>
+The white light beam coming from the THEMIS telescope (white light on the left) is first decomposed in a low resolution spectrum (rainbow on the middle left). A rigid mask placed on the light path, enables to select several bands within the solar spectrum that will be analysed (overlapping orange and red patch on the middle right). Finally, an echelle grating enables to strongly increase the dispersion (spacing) of the spectral domains of interest (separated and extended red and orange patch on the right). There spectral cameras are placed to record the high resolution spectrum.
+With its a spectral resolving power, R, of about 200 000-300 000, THEMIS MTR2 spectrograph has one of the world's best resolving power in astrophysics. MTR2 has the ability to distinguish between two wavelengths separated by a small amount. THEMIS theoretical can produce simultaneously up to eight high resolution spectrograms (although most cases, only 2-4 are requested). The choice of wavelength domains is not pre-imposed to the visiting research scientist observing with THEMIS. The choice is left to the investigators, giving them a high level of freedom to study [[https://www.themis.iac.es/doku.php?id=science:objectives | diverse topics in solar physics]].
+\\
+</columns>