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Ursa Astronomical Association
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Ursa Astronomical Association

Quiet aurora arc - 19.10.2021 at 00.54 - 19.10.2021 at 02.42 Helsinki Observation number 101860

Visibility II / V

At the beginning of the episode, the northern lights were visible from the cloud (Fig. 1), at 01.56 onwards as a weak but permanent and moving arc, there were sometimes a few rays (Fig. 2 and a video / Fig. 3 composed of about 40 squares)

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Additional information
  • Aurora brightness
    • Very dim auroras
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