Sprites and Sprite Halos imaged at 1000 fps

Examples of sprites and sprite halos imaged by the University of Alaska from the Wyoming Infrared Observatory, Jelm Mountain, WY in 1999. The last example shows reignition of a sprite after ~50 milliseconds. Playback speed is 1/100 real time. A detailed analysis of Event #6 is contained in D.D. Sentman et al. (2008), Plasma chemistry of sprite streamers, J. Geophys. Res., 113( D11112), doi:10.1029/2007JD008941. (Music: excerpt from Beethoven's Violin Concerto.)