High-speed telescopic imaging of sprites

Telescopic video observations of sprites at high frame rates show very complex structures in both space and time, including bead and streamer-like formations and propagation. Observed streamers rarely persist for more than 1-2 ms, while observed beads persist up to tens of ms and do not appear to propagate in this data set. Additionally, images show that streamer-like channels often contain many bead-like structures. While the time resolution cannot directly observe propagation, images show that the so-called "streamers'' presented here do seem to exhibit signs of propagation. These results are compared to previous measurements and discussed in the context of streamer modeling and laboratory streamers.