Prominence eruption observed in He II 304 Å up to &gt;6 <i>R</i>_⊙ by EUI/FSI aboard Solar Orbiter

Aims. We report observations of a unique, large prominence eruption that was observed in the He II 304 Å passband Extreme Ultraviolet Imager/Full Sun Imager telescope aboard Solar Orbiter on 15–16 February 2022. Methods. Observations from several vantage points – Orbiter, Solar-Terrestrial Relations Observatory, and Heliospheric Earth-orbiting satellites were used to measure kinematics erupting associated coronal mass ejection. Three-dimensional reconstruction calculate deprojected positions speeds different parts prominence. passbands allowed us analyse radiative properties Results. The leading edge corresponding ejection propagate at around 1700 km s −1 2200 , respectively, while trailing are significantly slower (around 500 ). Parts tracked up heights over 6 R ⊙ . emission is probably produced via collisional excitation rather than scattering. Surprisingly, brightness feature increases with height. Conclusions. reported first such great height (above