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SDO Mission Blog

This is the Solar Dynamics Observatory Mission blog. It will consist of mission status, news, and event updates.

The time in the header of the HMI movie turns out to be off by 3 hours (the movie runs from 1320-1342 UTC). Once I heard that, it was back to Helioviewer (, which now redirects to a GSFC website) to produce an AIA 221 Å movie. I selected the area around the flare and made a movie that covers between 1300 and 1400 UTC. Now there is good agreement in the presence and shape of the filament, even the change from upright oval to a more horizontal appearance. You can compare the movies yourself to see how well the HMI filament tracks the AIA 221 Å filament. The post-flare arcade is much easier to see in this movie.