Banff by Night


Milky Way Reflections at Bow Lake

Three perfect nights in July provided opportunities to capture the night sky at popular sites in Banff National Park.

When the weather forecast in mid-July looked so promising I made an impromptu trip to Banff to shoot nightscapes and time-lapses under unusually clear skies. Clouds are often the norm in the mountains or, increasingly these days, forest fire smoke in late summer.

But from July 15 to 17 the skies could not have been clearer, except for the clouds that rolled in late on my last night, when I was happy to pack up and get some sleep.

Conjunction over the Continental Divide with Train

My first priority was to shoot the marvellous close conjunction of the Moon and Venus on July 15. I did so from the Storm Mountain viewpoint on the Bow Valley Parkway, with a cooperative train also coming through the scene at the right time.

The Milky Way and Mars over Storm Mountain

This was the view later with the Milky Way and Mars over Bow Valley and Storm Mountain.

Bow Lake by Night Panorama

The next night, July 16, was one of the most perfect I had ever seen in the Rockies. Crystal clear skies, calm winds, and great lake reflections made for a picture-perfect night at Bow Lake on the Icefields Parkway. Above is a 360° panorama shot toward the end of the night when the galactic centre of the Milky Way was over Bow Glacier.

Streaks of green airglow arc across the south, while to the north the sky is purple from a faint display of aurora.

Earlier that night the usual auroral arc known as Steve put in an unexpected appearance. It was just a grey band to the eye, but the camera picked up Steve’s usual pink colours. Another photographer from the U.S. who showed up had no idea there was an aurora happening until I pointed it out.

Mars and the Milky Way at Herbert Lake

My last night was at Herbert Lake, a small pond great for capturing reflections of the mountains around Lake Louise, and the Milky Way. Here, brilliant Mars, so photogenic this summer, also reflects in the still waters.

At each site I shot time-lapses, and used those frames to have some fun with star trail stacking, showing the stars turning from east to west and reflected in the lake waters, and with a single still image taken at the end of the sequence layered in to show the untrailed sky and Milky Way.

But I also turned those frames into time-lapse movies, and incorporated them into a new music video, along with some favourite older clips reprocessed for this new video.

Banff by Night (4K) from Alan Dyer on Vimeo.

Enjoy! And do enlarge to full screen. The video is also in 4K resolution.

Clear skies!

— Alan, August 2, 2018 / © 2018 Alan Dyer / AmazingSky.com

 

Star Trail Reflections


The stars of the southern sky arc over the peaks of the Lake Louise Range in this half-hour’s worth of exposures.

For this shot I took 35 frames from a 200-frame time-lapse movie and stacked them to create star trails moving over about 25 minutes time when the sky was dark and moonless. I also layered in the moonlit landscape from a frame taken at the very end of the time-lapse sequence when the Moon has risen and was lighting the mountains and trees. So this scene is a bit of a Photoshop fake, but only so far as to merge exposures taken a couple of hours apart from the same fixed camera to combine the sky and stars from when the Moon was not in the sky with the ground from when it was, so the ground isn’t too dark and featureless.

What most people find surprising about star trail shots is the range of colours displayed. Some of the magenta trails come from a little chromatic aberration in the lens. But nevertheless, stars do exhibit lots of colours, but usually only in time exposures like this. As a bonus one frame captures either a meteor or an Iridium satellite flare at right above Mount Victoria.

I took the images for this scene on Friday, September 7, on a shoot at Herbert Lake in Banff.

– Alan, September 14, 2012 / © 2012 Alan Dyer