Amazing Sky by Alan Dyer

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SAR Arc and Aurora (May 11-12, 2021).jpg

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An auroral arc at left across the northern horizon with a faint red SAR — Stable Auroral Red — arc to the east. The SAR arc was not visible to the eye. The camera was the red-sensitive Canon EOS Ra so that helped pick up the dim deep red glow. The wide lens captures the broad sweep of the summer Milky Way rising, arcing from NE at left to SE at right, with the galactic core area at far right.

This is a single tracked exposure for 2 minutes at f/2.8 with the TTArtisan 11mm full-frame fish-eye lens, on the EOS Ra at ISO 1600, and on the MSM tracker.
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Aurora
An auroral arc at left across the northern horizon with a faint red SAR — Stable Auroral Red — arc to the east. The SAR arc was not visible to the eye. The camera was the red-sensitive Canon EOS Ra so that helped pick up the dim deep red glow. The wide lens captures the broad sweep of the summer Milky Way rising, arcing from NE at left to SE at right, with the galactic core area at far right. <br /> <br /> This is a single tracked exposure for 2 minutes at f/2.8 with the TTArtisan 11mm full-frame fish-eye lens, on the EOS Ra at ISO 1600, and on the MSM tracker.