The summer southern Milky Way over Reesor Lake in Cypress Hills Interprovincial Park, a Dark Sky Preserve. Only July 28/29, 2017, just after moonset with Sagittarius in the southwest, and Saturn just about to go behind the treeline. Wind rippled the water and prevented a reflection of stars and the Milky Way. Some airglow tints the sky. This is a composite of four untracked exposures for the ground (mean combined to smooth noise) and four tracked exposures for the sky taken immediately afterwards (again, mean combined to smooth noise). The ground shots were 2 minutes each at f/2.8 and ISO 3200, The sky shots were 1 minute each at f/2 and ISO 1600. All with the 20mm Sigma Art lens and Nikon D750. The tracker was the Star Adventurer Mini.
The summer Milky Way towering over the sandstone concretions and badlands at Red Rock Coulee Natural Area, in southeast Alberta. Taken July 26, 2017. Saturn is the bright object amid the Dark Horse dark lanes in the Milky Way at right. Sagittarius is just above the horizon amid some cloud. The bright star at top left is Altair in Aquila. This is a composite of 10 tracked exposures for the sky (mean combined to smooth noise) taken immediately after 4 untracked exposures for the ground (again, mean combined to smooth noise). Each exposure was 1 minute at f/2.2 with the Sigma 20mm Art lens and ISO 3200 with the Nikon D750. The tracker was the Star Adventurer Mini.
