My 2.5-minute music video incorporates time-lapse and still images of the fine display of Northern Lights seen from Alberta – indeed from most of northern and western North America – on the night of September 27/28, 2017.
It is rendered in 4K resolution.
The video uses time-lapse clips shot looking north, straight up to the zenith, and south. The exposures are mostly about 2 seconds at ISO 6400, with an interval of 1 second, to freeze the fast motion as much as possible.
The zenith and south displays were post-sub-storm flickering or flaming type auroras, with patches of sky pulsing off and on so rapidly only real-time video could accurately capture the scene. However, the fast cadence time-lapses do portray much of the effect of large patches of the sky turning on and off.
The still-image panorama I zoom out to is a 360° scene of the infamous “Steve” arc, an isolated arc that often appears equator-ward of the main auroral oval and usually only when the main oval activity has subsided. This night the Steve arc appeared for only about 20 minutes before he faded and the main display picked up again, moving overhead.
The order in which I show the clips is the order in which I shot them.
All were shot from home in southern Alberta, with a Nikon D750 camera and Sigma 14mm Art lens at f/1.8 for most images.
Processing was with Adobe Camera Raw and LRTimelapse, an essential tool in this case to handle the changes in brightness of the aurora in the first sequence.