Comet ISON (C/2012 S1) in the morning twilight, above centre, with Mercury above the trees at left of frame. Taken from home in southern Alberta, November 21, 2013, using the 135mm lens at f/2.8 and Canon 5D MkII at ISO 1600 for stack of 5 x 4 second exposures, tracked with the iOptron SkyTracker, with the ground from one exposure to avoid blurring from the tracking motion.
The Amazing Sky 