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--- results:gallery:imofmonth [2025/03/27 15:44] – etienne
+++ results:gallery:imofmonth [2025/04/10 06:35] (current) – removed etienne
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-===== Images of the month =====
-=== March 2025 ===
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-<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>
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-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 Hα 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 Hα line centre. This emission is absent from the continuum emission, indicating a chromospheric emission phenomena. Meanwhile, the red wing maps (Hα+1Å and Hα+0.5Å) display dark absorbing material above the location of the flare ribbons, signature of down-flowing dense material, a phenomena nicknamed "coronal rain". While performing observations with THEMIS, targeting this flaring active region has been permitted thanks thanks to the high-cadence Hα surveillance permitted by the [[https://lagrange.oca.eu/fr/meteospace | METEOSPACE/3SOLEIL service]].
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-=== February 2025 ===
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-<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>
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-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.
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-=== January 2025 ===
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-<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:granulation:granulation_comparison.jpg"> <img src="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:granulation:granulation_comparison.jpg" alt="Themis NOAA 13354 Sunspot" style="width: 100%; height: auto;"></a></html>
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-Observation of a quiet Sun region on a "bad seeing" day, highlighting the capacity of the [[technical:tao|Themis Adaptive Optics]] (with and without image reconstruction technique) to resolve solar granulation.
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-=== December 2024 ===
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-<html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:ar:noaa13354_lowerres_solarcolor.jpg"> <img src="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:ar:noaa13354_lowerres_solarcolor.jpg" alt="Themis NOAA 13354 Sunspot" style="width: 100%; height: auto;"></a></html>
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-Composite whitelight image (red continuum) of solar active region NOAA 13354 observed with THEMIS on June 26th 2023. The image is made by setting side by side three images obtained with THEMIS, using the capabilities of the [[technical:tao|Themis Adaptive Optics]].
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