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| results:gallery:imofmonth [2025/02/03 12:01] – etienne | results:gallery:imofmonth [2025/03/01 14:37] (current) – etienne |
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| ===== Images of the month ===== | ===== Images of the month ===== |
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| | === March 2025 === |
| | <columns 80% 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> |
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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". |
| | </columns> |
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| === February 2025 === | === February 2025 === |
| <columns 50% l > | <columns 33% l > |
| <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> | <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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| === December 2024 === | === December 2024 === |
| <columns 90% c > | <columns 90% c > |
| <html> <a href="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:ar:noaa13354_lowerres_solor.jpg"> <img src="https://www.themis.iac.es/lib/exe/fetch.php?media=results:gallery:ar:noaa13354_lowerres_solor.jpg" alt="Themis NOAA 13354 Sunspot" style="width: 100%; height: auto;"></a></html> | <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 of solar active region NOAA 13345 observed with THEMIS on June 6th 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]]. | 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]]. |
| </columns> | </columns> |
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