78,000km tall activated solar prominence shot 2 Sept. 2012 with a 0.8A Daystar ION H-alpha filter and your venerable DMK 21AU618.AS. There was so much movement in this prominence that despite 1.0ms shutter speed and recording short AVIs, there is still considerable blurring of plasma streaming down to the southern limb at right.
http://www.lafterhall.com/solar_prominence_photography.html
Jim Ferreira, Livermore CA, http://www.lafterhall.com/halpha_sun.html