Messier 27 - the Dumbbell
This is 3h40m of 5 minute exposures on the Dumbbell with my Canon 6D at iso 1600 through a Meade 14"SCT at f10. The exposures were calibrated with dark, bias, and flat fames, and stacked/processed in Pixinsight. There's a fair bit of vertical banding since it was a very warm night (+25*C ambient).