Amazing Sky by Alan Dyer

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Milky Way over Milk River (14mm 6D).jpg

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The summer Milky Way over the winding Milk River at Writing-on-Stone Provincial Park, Alberta, Canada, on a slightly hazy night, July 24, 2017. The hills in the distance are the Sweetgrass Hills of Montana. The Park preserves ancient petroglyphs carved on the sandstone rock formations. It is a UN World Heritage Site, and is a sacred site to the Blackfoot First Nations people. Across the river are the preserved wood buildings of the 1880’s NWMP Outpost.

Sagittarius is in the thin cloud on the horizon, while the bright object is a hazy Saturn. Altair is the bright star at top of frame. Capricornus is rising at left. Light pollution from towns in Montana and from natural airglow colour the sky.

This is a combination of a stack of 8 exposures for the ground, mean combined to reduce noise, and untracked, plus 8 exposures taken immediately after for the sky and taken with the tracker motor on and median combined to smooth noise. The two sets of exposures are masked to reveal the ground from the untracked set and the sky from the tracked set.

All are 2-minute exposures at f/2.5 with the Rokinon 14mm lens and Canon 6D at ISO 3200. The tracker was the Star Adventurer Mini in “astrophotography” mode.
Copyright
© 2017 Alan Dyer
Image Size
5385x3590 / 13.5MB
www.amazingsky.photoshelter.com
Contained in galleries
Alberta & Saskatchewan Nightscapes, Scenics, The Milky Way
The summer Milky Way over the winding Milk River at Writing-on-Stone Provincial Park, Alberta, Canada, on a slightly hazy night, July 24, 2017. The hills in the distance are the Sweetgrass Hills of Montana. The Park preserves ancient petroglyphs carved on the sandstone rock formations. It is a UN World Heritage Site, and is a sacred site to the Blackfoot First Nations people. Across the river are the preserved wood buildings of the 1880’s NWMP Outpost. <br /> <br /> Sagittarius is in the thin cloud on the horizon, while the bright object is a hazy Saturn. Altair is the bright star at top of frame. Capricornus is rising at left. Light pollution from towns in Montana and from natural airglow colour the sky. <br /> <br /> This is a combination of a stack of 8 exposures for the ground, mean combined to reduce noise, and untracked, plus 8 exposures taken immediately after for the sky and taken with the tracker motor on and median combined to smooth noise. The two sets of exposures are masked to reveal the ground from the untracked set and the sky from the tracked set. <br /> <br /> All are 2-minute exposures at f/2.5 with the Rokinon 14mm lens and Canon 6D at ISO 3200. The tracker was the Star Adventurer Mini in “astrophotography” mode.