Thought I saw some rapid changes occurring to a tree-like prominence on the limb so kept on imaging it over about 25 minutes.
It’s thought that some disturbance such as a flare or magnetic reconnection event “activates” a prominence which then erupts. Gravity and or magnetic field lines can pull the plasma back towards the Sun. If it escapes, it becomes a Coronal Mass Ejection which can cause aurorae and geomagnetic storms if Earth directed.
No flares were recorded yesterday that could be observed from Earth or Sun watching satellites.
I was using a lot of new equipment so I had my hands quite full – glad I caught this.
Equinox 120ED scope, Quark Chromosphere, 0.5x FR, Grasshopper 3 camera/Firecapture software
Ioptron ZEQ25GT mount