Amazing Sky by Alan Dyer

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Star Trails over Bow Lake.jpg

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A blend of images to show the stars of the southern sky moving from east to west (left to right) over the Rocky Mountains at Bow Lake, in Banff, Alberta. The main peak at centre is Bow Peak. Crowfoot Glacier is at far left; Bow Glacier is at right below the Milky Way.

A single static image shows the Milky Way and stars at the end of the motion sequence.

The star trails and Milky Way reflect in the calm waters of Bow Lake this night on July 16, 2018, though they appear large and out of focus.

This is a stack of 300 images for the star trails, stacked with the Ultrastreak function of Advanced Stacker Plus actions, plus a single exposure taken a minute or so after the last star trail image. The star trail stack is dropped back a lot in brightness, plus they are blurred slightly, so as to not overwhelm the fixed sky image.

The sky images are blended with a stack of 8 images for the ground, mean combined to smooth noise in the ground.

All are 30 seconds at f/2 with the 15mm Laowa lens and Sony a7III at ISO 3200. All were taken as part of a time-lapse sequence. Bands of airglow add the green streaks to the sky.
Copyright
© 2018 Alan Dyer
Image Size
6000x4000 / 13.3MB
www.amazingsky.photoshelter.com
Contained in galleries
My Portfolio, Star Trails, Alberta & Saskatchewan Nightscapes
A blend of images to show the stars of the southern sky moving from east to west (left to right) over the Rocky Mountains at Bow Lake, in Banff, Alberta. The main peak at centre is Bow Peak. Crowfoot Glacier is at far left; Bow Glacier is at right below the Milky Way. <br /> <br /> A single static image shows the Milky Way and stars at the end of the motion sequence.<br /> <br /> The star trails and Milky Way reflect in the calm waters of Bow Lake this night on July 16, 2018, though they appear large and out of focus.<br /> <br /> This is a stack of 300 images for the star trails, stacked with the Ultrastreak function of Advanced Stacker Plus actions, plus a single exposure taken a minute or so after the last star trail image. The star trail stack is dropped back a lot in brightness, plus they are blurred slightly, so as to not overwhelm the fixed sky image. <br /> <br /> The sky images are blended with a stack of 8 images for the ground, mean combined to smooth noise in the ground. <br /> <br /> All are 30 seconds at f/2 with the 15mm Laowa lens and Sony a7III at ISO 3200. All were taken as part of a time-lapse sequence. Bands of airglow add the green streaks to the sky.