A green auroral arc across the northern horizon with faint red components above, with a touch of blue as well. The red glow forms a very dim red arc h
A green auroral arc across the northern horizon with faint red components above, with a touch of blue as well. The red glow forms a very dim red arc high across the north which is likely a SAR — Stable Auroral Red — arc. It became more prominent a few minutes later when the main arc died down in intensity. The camera was the red-sensitive Canon EOS Ra so that helped pick up the dim deep red glow. The wide lens captures the full sweep of the auroral arc from NW at left to NE at right. This is a single untracked exposure for 30 seconds at with the TTArtisan 11mm full-frame fish-eye lens, on the EOS Ra at ISO 3200.
Size: 5400px × 3600px
Photo credit: © Alan Dyer / VWPics / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 11mm, 2021, alberta, arc, astrograph, aurora, auroral, blue, eos, field, fish-eye, galaxy, home, ra, red, sar, single, stable, ttartisan
