A classic arc of aurora borealis showing upper level blue and magenta components to the arc and a blue ray at left (not to be confused with the reddis
A classic arc of aurora borealis showing upper level blue and magenta components to the arc and a blue ray at left (not to be confused with the reddish lens flare from the Moon just off frame at the upper left edge). The Kp was 5 this night but with the Bz often north. This was early in the evening when the aurora appeared as a bright but mostly featureless arc and was visible even in the twilight. It did brighten and dance with structure about midnight. This is a single 30-second untracked exposure with the TTArtisan 11mm full-frame fish-eye lens wide open at on the Canon EOS Ra camera at ISO 1600 (the lens is only for mirrorless cameras and does not transmit lens metadata to the camera).
Size: 5400px × 3600px
Photo credit: © Alan Dyer / VWPics / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 11mm, 16, 2021, alberta, april, arc, astrograph, aurora, blue, borealis, eos, fish-eye, galaxy, home, kp5, lens, lights, northern, ra, ttartisan
