Successful coordinated observations of filaments and prominences during run #2023/239 of Labrosse et al. The IRIS spacecraft MgII UV line (left) and THEMIS-MTR2 Halpha and Helium D3 lines (right) are showing the same solar filament located in between NOAA 13449 and 13446. Both instruments are raster spectrographs.

[Figure credit: B. Schmieder]

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