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===== Images of the month ===== | ===== Images of the month ===== | ||
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+ | === March 2025 === | ||
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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 " | ||
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+ | === February 2025 === | ||
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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" | ||
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=== January 2025 === | === January 2025 === | ||
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=== December 2024 === | === December 2024 === | ||
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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: | + | Composite whitelight image (red continuum) |
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