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Ursa Astronomical Association
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Ursa Astronomical Association

Half-sky auroras - 20.10.2022 at 21.30 - 21.10.2022 at 04.00 Utsjoki Observation number 110411

Visibility IV / V

Another northern lights day at Utsjoki. This time, the gauges even promised a reasonable chance of a fire. At first, the clouds seemed to come and spoil the job, but we got really nice lights in half the sky. Of course, the best warps came after 01:00, when I had already taken the camera inside. Then the fires escaped from the firmament to the southern sky and arranged a proper dance. I'm happy to just look at these from the window.

The action camera was able to record even the best part of the show. Timelapse from 23:58 -> around 04:00.

More similar observations
Additional information
  • Aurora brightness
    • Bright 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.

    • Band info

      Bands are usually narrower, more twisty at the bottom, brighter, and more active than arches. Bands usually develop from arches.

      Bands can form J and U shapes, sometimes even full spirals. The corona can also arise from bands. Bands are a fairly common form of aurora.

      Aurora band. Photo by Merja Ruotsalainen.

      Aurora band. Photo by Matias Takala.

      Aurora band. Photo by Lea Rahtu-Korpela.

      Aurora bands. Photo by Lauri Koivuluoma.

      Aurora band. Photo by Matias Takala.

  • 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.

Comments: 3 pcs
Jari Luomanen - 27.10.2022 at 20.30 Report this

Upeita kuvia nämäkin ja aivan mahdottoman hieno mökki! 

Sami Mutka - 27.10.2022 at 20.38 Report this

Kiitos! Mökki oli upea, paikasta puhumattakaan. Ja kelitkin vielä suosivat taivaiden. Aika pitkälti tällainen once in a lifetime -tyyppinen retki, jossa meni nappiin.

Pentti Ketola - 28.10.2022 at 13.28 Report this

Mökki vie tässä vähän huomiota hienosta  taivasmaisemasta, kävin siellä 7.7.1977 ja Utsjoen vanhan matkailuhotellin terassilla oli lämmintä 27 astetta.

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