M101 is the "Pinwheel Galaxy" in the Big Dipper. It is known for it's well-defined spiral arms and knotty structure. I finally had a night of zero cloud obstruction and low moisture, which allowed me a full night to work on it!

Canon 6D
13" Refelctor on Skywatcher EQ6-R mount

100-110 second exposures at 1600 ISO with a Optolong broadband light pollution filter
stacked with Deep Sky Stacker and post with Photoshop