First night - FIRST SPRITE!
A careful re-analysis of the images we collected last night showed that we indeed caught a sprite, far away over northern Italy!
Here below, the image of the sprite after reprocessing it.
There is in fact a coincidence with a lightning +CG flash occurred just after 00:45 UCT as shown on the map (medium sized cross at 45.3N and 10E - just off Milan). There may have been more sprites in that region but the thickness of the atmosphere over that distance (more than 700 Km) has made them hardly observable. [click on the images to enlarge them]