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Validation of an Extreme-ultraviolet Desaturation Technique for the Atmospheric Imaging Assembly on Board the Solar Dynamics Observatory Using Observations from the Extreme Ultraviolet Imager on Board Solar Orbiter
Sabrina Guastavino et al 2026 The Astrophysical Journal Letters 1005 .
Caption: Figure 3.
Zoomed-in crop of the flaring site on 2024 March 19, at a solar-referenced time of 23: 16: 39 UT. Top left: original SDO/AIA 171 Å image. Top right: same AIA frame after desaturation with Adaptive SE-DESAT. Note that the reconstructed flaring region has values well beyond the AIA instrumental dynamic range. Bottom left: Solar Orbiter/EUI/HRIEUV short-exposure image. Bottom-right: overlay of the reprojected EUI/HRIEUV image and the desaturated AIA frame, illustrating close spatial and morphological correspondence. The original AIA and EUI frames were acquired at 23: 24: 57 UT and 23: 20: 16 UT, respectively, and have been corrected for light-travel time and reprojected to a common helioprojective grid. A time-sequence animation during the flare event is available.
(An animation of this figure is available in the online article.)
(An animation of this figure is available.)
The video/animation of this figure is available in the online journal.
© 2026. The Author(s). Published by the American Astronomical Society.