The strange aurora named Steve put on a show on Sunday, May 6.
The past weekend was a good one for Northern Lights here in Alberta and across western Canada.
A decent display lit the northern sky on Saturday, May 5, on a warm spring evening. I took in that show from a favorite spot along the Red Deer River.
The next night, Sunday, May 6, we were hoping for a better show, but the main aurora never amounted to much across the north.
Instead, we got a fine showing of Steve, an unusual isolated arc of light across the sky, that was widely observed across western Canada and the northern U.S. I caught his performance from my backyard.
Popularized by the Alberta Aurora Chasers Facebook group, Steve is the fanciful name applied to what still remains a partly unexplained phenomenon. It might not even be a true aurora (and it is NOT a “proton arc!”) from electrons streaming down, but a stream of hot gas flowing east to west and always well south of the main aurora.
Thus Steve is “backronymed” as Strong Thermal Emission Velocity Enhancement.
To the eye he appears as a grey arc, not doing much, but fading in, slowly shifting, then fading away after 30 to 60 minutes. He doesn’t stick around long.
The camera reveals his true colours.
This is Steve to the west, displaying his characteristic pink and white tints.
But overhead, in a fish-eye lens view, he displayed ever so briefly another of his talents – slowly moving fingers of green, called a picket fence aurora.
It was appropriate for Steve to appear on cue, as NASA scientists and local researchers who are working on Steve research were gathered in Calgary to discuss future aurora space missions. Some of the researchers had not yet seen Steve in person, but all got a good look Sunday night as they, too, chased Steve!
I shot a time-lapse and real-time videos of Steve, the latter using the new Sony a7III camera which can shoot 4K videos of night sky scenes very well.
The final video is here on Vimeo.
Steve Aurora – May 6, 2018 (4K) from Alan Dyer on Vimeo.
It is in 4K, if you choose to stream it at full resolution.
With summer approaching, the nights are getting shorter and brighter, but we here in western Canada can still see auroras, while aurora destinations farther north are too bright and lack any night skies.
Plus our latitude south of the main auroral oval makes western Canada Steve country!
Clear nights and a waxing Moon made for great opportunities to shoot the Badlands under moonlight.
This has not been a great spring. Only now is the last of the snow melting here in Alberta.
But some mild and clear nights this week with the waxing gibbous Moon allowed me to head to the Red Deer River valley near where I live in Alberta for some moonlit nightscapes.
Here’s the Big Dipper high overhead as it is in spring pointing down to Polaris.
I shot this and some other images in this gallery with the new Sony a7III mirrorless camera. A full test of its astrophoto abilities is in the works.
This is Jupiter rising, with the Moon lighting the sky, and illuminating the landscape. Moonlight is the same colour as sunlight, just much fainter. So while this might look like a daytime scene, it isn’t.
This is Venus setting in the evening twilight at the Hoodoos on Highway 10 near Drumheller. The winter stars are setting into the west, to disappear for a few months.
Here’s Venus in closeup, passing between the Hyades and Pleiades star clusters in Taurus, low in the twilight over the scenic Horsethief Canyon area of the Red Deer River.
While Venus is climbing higher into our evening sky this spring, the Pleiades, Hyades and all the winter stars are fast disappearing from view.
We say goodbye to winter, and not a moment too soon!
Prospects looked bleak for seeing the January 31 total eclipse of the Moon. A little planning, a chase, and a lot of luck made it possible.
A mid-winter eclipse doesn’t bode well. Especially one in the cold dawn hours. Skies could be cloudy. Or, if they are clear, temperatures could be -25° C.
I managed to pull this one off, not just seeing the eclipse of the Moon, but getting a few photos.
The secret was in planning, using some helpful apps …
Because this eclipse was occurring before dawn for western North America the eclipsed Moon was going to be in the west, setting.
To plan any shoot the first app I turn to is the desktop planetarium program Starry Night™.
Shown above, the program simulates the eclipse with the correct timing, accurate appearance, and location in the sky at your site. You can set up indicators for the fields of various lenses, to help you pick a lens. The yellow box shows the field of view of a 50mm lens on my full-frame camera, essential information for framing the scene.
With that information in mind, the plan was to shoot the Moon over the Rocky Mountains, which lie along the western border of Alberta.
The original plan was a site in Banff on the Bow Valley Parkway looking west toward the peaks of the Divide.
But then the next critical information was the weather.
Not good! Home on the prairies was not an option. While Banff looked OK, the best prospects were from farther south in the Crowsnest Pass area of Alberta, as marked. So a chase was in order, involving a half-day drive south.
But what actual site was going to be useful? Where could I set up for the shot I wanted?
I needed a spot off a main highway but drivable to, and with no trees in the way. I did not know the area, but Allison Road looked like a possibility.
The TPE app shows the direction to the Sun and Moon to help plan images by day. And in its night mode it can show where the Milky Way is. Here, the thin blue line is showing the direction to the Moon during totality, showing it to the south of Mt. Tecumseh. I wanted the Moon over the mountains, but not behind a mountain!
With a possible site picked out, it was time to take a virtual drive with Google Earth.
The background map TPE uses is from Google Earth. But the actual Google Earth app also offers the option of a Street View for many locations.
Above is its view from along Allison Road, on the nice summer day when the Google camera car made the drive. But at least this confirms there are no obstructions or ugly elements to spoil the scene, or trees to block the view.
But there’s nothing like being there to be sure. It looks a little different in winter!
After driving down to the Crowsnest Pass the morning before, the first order of the day upon arrival was to go to the site before it got dark, to see if it was usable.
I used the mobile app Theodolite to take images (above) that superimpose the altitude and azimuth (direction) where the camera was aimed. It confirms the direction where the Moon will be is in open sky to the left of Tecumseh peak. And the on-site inspection shows I can park there!
There is one more new and very powerful app that provides another level of planning. From The Photographer’s Ephemeris, you can hand off your position to a companion mobile app (for iOS only) called TPE 3D …
It provides elevation maps and places you on site, with the actual skyline around you drawn in. And with the Moon and stars in the sky at their correct positions.
While it doesn’t simulate the actual eclipse, it sure shows an accurate sky … and what you’ll frame with your lens with the actual skyline in place.
Compare the simulation, above, to the real thing, below:
Zooming out with TPE 3D provides this preview of a panorama I hoped to take.
It shows Cassiopeia (the W of stars at right) over the iconic Crowsnest Mountain, and the stars of Gemini setting to the right of Tecumseh.
Here’s the real thing, in an even wider 180° view sweeping from south to north. Again, just as predicted!
Between the weather predictions – which proved spot on – and the geographical and astronomical planning apps – which were deadly accurate – we now have incredible tools to make it easier to plan the shot.
If only we could control the clouds! As it was, the Moon was in and out of clouds throughout the 70 minutes of totality. But I was happy to just get a look, let alone a photo.
The next total lunar eclipse is in six months, on July 27, 2018, but in an event visible only from the eastern hemisphere.
The next TLE for North America is a more convenient evening event on January 20, 2019. That will be another winter eclipse requiring careful planning!
I present a new 4-minute music video (in 4K resolution) featuring time-lapses of the Milky Way.
One of the most amazing sights is the Milky Way slowly moving across the sky. From Canada we see the brightest part of the Milky Way, its core region in Sagittarius and Scorpius moving across the souther horizon in summer.
But from the southern hemisphere, the galactic core rises dramatically and climbs directly overhead, providing a jaw-dropping view of our edge-on Galaxy stretching across the sky. It is a sight all stargazers should see.
I shot the time-lapses from Alberta, Canada and from Australia, mostly in 2016 and 2017.
I include a still-image mosaic of the Milky Way from Aquila to Crux shot in Chile in 2011.
Do watch in 4K if you can! And in Full-Screen mode.
Locations include Writing-on-Stone and Police Outpost Provincial Parks, and Banff and Jasper National Parks in Alberta.
In Australia I shot from the Victoria coast and from inland in New South Wales near Coonabarabran, with some scenes from the annual OzSky Star Safari held each April.
New Year’s Day proved to be a busy one for sky sights from home in southern Alberta.
Clear skies and warming temperatures allowed me to capture a trio of sights on January 1: Mercury in the morning, a unique mirage called the Fata Morgana in the afternoon, and the rising Full Moon in the evening.
On January 1 elusive Mercury was at its greatest elongation away from the Sun in the morning sky. This placed it as high as it can get above the horizon, though that’s not high at all at the best of times.
I captured Mercury before dawn as a bright star in the colourful twilight, using a telephoto lens to frame the scene more closely.
At this time the temperature outside was still about -24° C, as a cold snap that had plunged the prairies into frigid air for the last week still held its grip.
But by the afternoon, warmer air was drifting in from the west, in a Chinook flow from the Rockies.
As evidence of the change, the air exhibited a form of mirage called the Fata Morgana, named after the sorceress Morgan le Fay of Arthurian legend. The illusion of castles in the air was thought to be a spell cast by her to lure sailors to their doom.
The mirage produced the illusion of bodies of water in the distance, plus distorted, elongated forms of wind turbines and farm buildings on the horizon. The cause is the refraction of light by layers of warm air aloft, above cold air near the ground.
By evening the mirage effect was still in place, producing a wonderful moonrise with the Full Moon writhing and rippling as it rose through the temperature inversion.
As the lead image at top shows, at moments the top of the disk had a green rim (almost a distinct green flash), while the bottom was tinted red.
Here’s a short time-lapse video of the scene, shot through a small telescope. The lead image above and below is a composite of four of the frames from this movie.
This was also the largest and closest Full Moon of the year, what has become popularly called a “supermoon,” but more correctly called a perigean Full Moon.
A lunar cycle from now, at the next Full Moon, the Moon undergoes a total eclipse in the dawn hours of January 31 for western North America. This will be another misnamed Moon, a “blue Moon,” the label for the second Full Moon in a calendar month.
And some will also be calling it a “supermoon,” as it also occurs close to perigee – the closest point of the Moon to Earth in its monthly orbit – but not as close a perigee as it was at on January 1.
So it will be less than super, but it will nevertheless be spectacular as the Full “blue” Moon turns red as it travels through Earth’s shadow.
The clouds cleared to present a magical night under the Moon in the Badlands of southern Alberta.
At last, a break in the incessant clouds of November, to provide me with a fine night of photography at one of my favourite places, Dinosaur Provincial Park, declared a U.N. World Heritage Site for its deposits of late Cretaceous fossils.
I go there to shoot the night sky over the iconic hoodoos and bentonite clay hills.
November is a great time to capture the equally iconic constellation of Orion rising in the east in the early evening. The scene is even better if there’s a Moon to light the landscape.
November 27 presented the ideal combination of circumstances: clear skies (at least later at night), and a first quarter Moon to provide enough light without washing out the sky too much and positioned to the south and west away from the target of interest – Orion and the winter sky rising in the east.
Below is a slide show of some of the still images I shot, all with the Canon 6D MkII camera and fine Rokinon 14mm f/2.5 lens, used wide open. Most are 15-second exposures, untracked.
I kept another camera, the Nikon D750 and Sigma 24mm Art lens, busy all night shooting 1200 frames for a time-lapse of Orion rising, with clouds drifting through, then clearing.
Below is the resulting video, presented in two versions: first with the original but processed frames assembled into a movie, followed by a version where the movie frames show accumulating star trails to provide a better sense of sky motion.
To create the frames for this version I used the Photoshop actions Advanced Stacker Plus, from StarCircleAcademy. They can stack images then export a new set of frames each with the tapering trails, which you then assemble into a movie. I also used it to produce the lead image at top.
The techniques and steps are all outlined in my eBook, highlighted at top right.
The HD movie is just embedded here, and is not published on Vimeo or YouTube. Expand to fill your screen.
To help plan the shoot I used the astronomy software Starry Night, and the photo planning software The Photographer’s Ephemeris, or TPE. With it, you can place yourself at the exact spot to see how the Sun, Moon and stars will appear in sightlines to the horizon.
Here’s the example screen shot. The spheres across the sky represent the Milky Way.
Look east to see Orion now in the evening sky. Later this winter, Orion will be due south at nightfall.
October has brought clear skies and some fine celestial sights. Here’s a potpourri of what was up from home.
We’ve enjoyed some lovely early autumn weather here in southern Alberta, providing great opportunities to see and shoot a series of astronomical events.
On October 5, Venus and Mars appeared a fraction of a degree apart in the dawn twilight. Venus is the brightest object, just above dimmer but red Mars. This was one of the closest planet conjunctions of 2017. Mars will appear much brighter in July and August 2018 when it makes its closest approach to Earth since 2003.
Satellites: The Space Station
The Space Station made a series of ideal evening passes in early October, flying right overhead from my site at latitude 51° N. I captured it in a series of stacked still images, so it appears as a dashed line across the sky. In reality it looks like a very bright star, outshining any other natural star. Here, it appears to fly toward the rising Moon.
Often appearing brighter than even the ISS, Iridium satellite flares can blaze brighter than even Venus at its best. One did so here, above, in another time-lapse of a pair of Iridium satellites that traveled in parallel and flared at almost the same time. But the orientation of the reflective antennas that create these flares must have been better on the left Iridium as it really shot up in brilliance for a few seconds.
Little in the sky beats a fine aurora display and we’ve had several of late, despite the Sun being spotless and nearing a low ebb in its activity. The above shot is a composite stack of 200 images, showing the stars circling the celestial pole above the main auroral arc, and taken on Friday the 13th.
This frame, from some 1300 I shot this night, October 13, captures the main auroral arc and a diffuse patch of green above that pulsed on and off.
You can see the time-lapse here in my short music video on Vimeo.
Friday the 13th Aurora from Alan Dyer on Vimeo.
It’s in 4K if your monitor and computer are capable. It nicely shows the development of the aurora this night, from a quiescent arc, through a brief sub-storm outburst, then into pulsing and flickering patches. Enjoy!
What all these scenes have in common is that they were all shot from home, in my backyard. It is wonderful to live in a rural area and to be able to step outside and see these sites easily by just looking up!