Amazing Sky by Alan Dyer

Show Navigation

Image 1 of 1

STEVE Arc Wide-Angle with Green Fingers (Aug 7, 2022).jpg

Add to Cart Add to Lightbox Download
A portrait of the infamous STEVE arc of hot flowing gas associated with an active aurora, here showing his distinctive pink colour and the fleeting appearance of the green picket fence fingers that often show up hanging down from the main arc. On this night the green fingers lasted no more than two minutes. STEVE = Strong Thermal Emission Velocity Enhancement, and is a river of hot gas flowing east to west equatorward of the main aurora band. STEVE appeared after the main Kp5-level aurora died down in activity to the north, typical behaviour for STEVE. He was visible for only 35 to 40 minutes, again typical.

This is a single untracked image looking high in the south, and taking in most of the summer sky using a full-frame fish-eye lens. Moonlight from the setting waxing gibbous Moon in the southwest lights the sky, as does the bright aurora to the north, just visible at upper left. The Summer Triangle stars are at centre at the zenith; Jupiter is the bright object rising at lower left in the southeast.

This is a single 25-second exposure with the Canon R6 at ISO 1250 and the TTArtisan 11mm lens at f/2.8. The frame is part of a short time-lapse sequence.
Copyright
© Alan Dyer/AmazingSky.com
Image Size
5472x3648 / 7.7MB
www.amazingsky.com
Contained in galleries
Aurora
A portrait of the infamous STEVE arc of hot flowing gas associated with an active aurora, here showing his distinctive pink colour and the fleeting appearance of the green picket fence fingers that often show up hanging down from the main arc. On this night the green fingers lasted no more than two minutes. STEVE = Strong Thermal Emission Velocity Enhancement, and is a river of hot gas flowing east to west equatorward of the main aurora band. STEVE appeared after the main Kp5-level aurora died down in activity to the north, typical behaviour for STEVE. He was visible for only 35 to 40 minutes, again typical. <br /> <br /> This is a single untracked image looking high in the south, and taking in most of the summer sky using a full-frame fish-eye lens. Moonlight from the setting waxing gibbous Moon in the southwest lights the sky, as does the bright aurora to the north, just visible at upper left. The Summer Triangle stars are at centre at the zenith; Jupiter is the bright object rising at lower left in the southeast. <br /> <br /> This is a single 25-second exposure with the Canon R6 at ISO 1250 and the TTArtisan 11mm lens at f/2.8. The frame is part of a short time-lapse sequence.