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Ursa Astronomical Association
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Ursa Astronomical Association

Active aurora band - 2.3.2017 at 20.58 Enontekiö Observation number 61655

Visibility III / V

Great northern lights show in Raattama last night / last night. Pink dance, forming stunning patterns, filling more than half of the sky.

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Additional information
  • Aurora brightness
    • Very bright auroras
  • Colors with unaided eye and other features
    • Red coloration of the shapes lower edge info

      Red lower edge visible with the naked eye. The bands which are starting to level up their activity and are green colored have quite often a narrow red lower edge. This is the most common form of red color which is derived from molecular nitrogen.

      Aurora band with purple lower edge. Photo by Ilmo Kemppainen.

      The low hanging brightest aurora band is colored red at the lower edge. Photo by Tero Ohranen.

      Narrow purple reddish tones at the lower part of this aurora band. Photo by Merja Ruotsalainen.

      Purple band at the bottom. Photo by Panu Lahtinen.

    • 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.

    • Violet auroras info

      Usually in Lapland or even in the south you can see purple auroras in stronger aurora shows. The most common color in auroras along with green and red.

  • Observed aurora forms
    • 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.

    • Corona info

      CoronaA corona is a hand fan shaped structure, it usually forms south of the observer's zenith, most commonly consisting of rays or bands. The corona is usually the most beautiful part of the aurora show. It is bright and active, but on the other hand also short-lived.

      Aurora corona. Photo by Anna-Liisa Sarajärvi.

      Aurora corona. Photo by Merja Ruotsalainen.

      Corona formed from bands. Photo by Markku Ruonala.

      Aurora corona. Photo by Tapio Koski.

    • 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.

Comments: 5 pcs
Emma Bruus - 3.3.2017 at 23.57 Report this

O_O Eeppistä kamaa, varsinkin tuo ensimmäinen kuva. Kiitos Sirpa näistä, kuviesi kautta meininki näkyy myös tänne pilvikerroksen alle mainiosti!

Panu Lahtinen - 4.3.2017 at 00.02 Report this

No huh huh!

Katselinkin Ivalon taivaskamerani kuvia että on ollut koko taivaan reposet, mutta ei noista 2 minuutin maksimipinoista saanut käsitystä että olivat näin vietävän upeat!

Joni Mikkola - 4.3.2017 at 02.51 Report this

Ompas todellakin ollut todella upea valonäytös. 

Satu Juvonen - 4.3.2017 at 19.03 Report this

Mieletön kiehkura! Onnittelut :)

Mia Heikkilä - 6.3.2017 at 09.36 Report this

Upeita ilmestyksiä! Kiitos!

Täällä etelässä jotain aavistuksia vain taivaalla...

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