Photo of the Week for August 10, 2018
The aurora-like phenomenon known as Steve, arcs above an abandoned car near the town of Kathyrn, Alberta, in this shot by Calgary photographer Siv Heang Tav. What exactly is Steve? Although the mysterious streak is often mistaken for an ordinary aurora, Steve is distinctly different. Scientists are still trying to figure it all out, but they’ve at least turned the name into an acronym: Strong Thermal Emission Velocity Enhancement. Dig out the March/April 2018 issue of SkyNews to read our feature article on Steve. One thing is certain—Steve didn’t arrive in a car.
Siv captured this scene with a single 10-second exposure made at ISO 3200 with a Nikon D810 DSLR camera and Nikkor 16mm fish-eye lens working at f/2.8.