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Ursa Astronomical Association

Quiet aurora arc - 3.1.2021 at 21.45 - 3.1.2021 at 23.55 Inari Observation number 95405

Visibility II / V

Sari Pietikäinen, Corona Borealis, Rovaniemi

We were with a friend in Saariselkä for New Year's Eve, and the weather never looked good when it came to watching the northern lights. In the evening, they were sore with their fins at Aurora's living room and were lit by the fireplace. I took a couple of test shots, and right away there was a promising greenery on the northern horizon. Thin clouds soon rose before the fires, but at some point the greenery began to show through the clouds as well.
Eventually handed over with the clouds and headed away. On the way, however, the cloudless horizon and brighter repos soon hit my eyes! Jeij! What was a little annoying was that they had put terribly bright lights along the Aurora Trail. Somehow I remembered that would have been dark in previous years. The snow and white trees shine a little unnecessarily in the pictures, covering the northern lights.
Pretty sluggish you come, but the first of the year. And my Southern method friend was right in flames. : D

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Additional information
  • Aurora brightness
    • Dim auroras
  • Observed aurora forms
    • Arc info

      ARC The arcs are wider than the bands and do not fold as strongly. The arcs are normally neither very bright nor active.

      The arc is probably the most common form of aurora. When aurora show is a calm arc in the low northern sky it often doesn’t evolve to anything more during night. In more active shows the arc is often the first form to appear and the last to disappear.

      The lower edge of the arc is usually sharp but the upper edge can gradually blend into the background sky. As activity increases rays and folds normally develop, and the arcs turn gradually into bands.

      An aurora arc runs across the picture. Vertical shapes are rays. Photo by Atacan Ergin.

      Aurora Arc. Photo by Mauri Korpi.

      Aurora Arc. Photo by Anna-Liisa Sarajärvi.

      Aurora Arc. Photo by Matti Asumalahti.

  • Colors with unaided eye and other features
    • Green auroras info

      Green, seen with the naked eye, is one the most common colors of the aurora. The green color is derived from atomic oxygen.

      Green auroras. Lea Rahtu-Korpela.

      Green auroras. Photo by Juha Ojanperä.

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