More images of Sprites are available. Most recently, sprites have been observed
over winter thunderstorms in Japan. The most recent University of Alaska Sprite
Observation Campaign was EXL98 in the High Plains of the United States. During the 1998
northern hemisphere summer, Stanford University has some incredible images showing high
spatial resolution from a Dobsonian telescope. Please email me with any more links with
recent sprite research
http://elf.gi.alaska.edu/sprites.html