Mars (at left) and the galactic centre area of the summer Milky Way low over the southern horizon at Writing-on-Stone Provincial Park, Alberta, on June 8/9, 2018. Sagittarus is at centre, with Scorpius at right. The Messier 6 and 7 open star clusters are just above the horizon at centre, just right of the Sweetgrass Hills on the horizon in Montana. This is a stack of 12 exposures for the ground, mean combined to smooth noise, and 1 exposure for the sky, all 30 seconds at f/2 with the Laowa 15m