The montage shows the expansion of a major eruptive prominence that ocurred on march 19th. Observing early in the morning the simple prominence at that time was showing all the signs that the solar magnetic field holding it together was going to collapse. Shortly after 11.20ut the magnetic field lines snapped releasing huge amounts of plasma out into space.
This image was taken with a Coronado SM40 @ 800mm fl with a DMK31 camera.
By 12.15ut the prominence had expanded so much that it was on the limits of visibility, however by now it was nearly a 1/3 solar diameter in size. This is the largest prominence visible since april 2010.
