Massimo Di Fusco, taken from Ferrara, Italy
Surrounding the familiar visage of the Owl Nebula (M97) in Ursa Major is a much fainter, rarely seen outer shell of emission from ionized oxygen. This imager captured it with an 8-inch scope at f/4.8, taking 32 hours of data with an Hα/OIII dual-band filter, plus an additional 14.9 hours with a light-pollution filter.