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Ursa Astronomical Association
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Ursa Astronomical Association

All-sky aurora - 17.3.2013 at 20.05 Tampere Observation number 15286

Visibility V / V

Jari Luomanen, Ursa (Länsi-Suomi)

A mute northern storm: I have never seen anything like it in its brightness and colors. Purple was knockout. The best moments lasted a very short time. At its wildest, it clearly reflected the colors of the northern lights.

More similar observations
Additional information
  • Aurora brightness
    • Very bright auroras
  • Colors with unaided eye and other features
    • Streaming auroras info

      Streaming. In streaming aurora fast irregular variations in brightness occur along the horizontal dimension of homogeneous shapes.

    • Flickering auroras info

      Flickering. This rare subclass refers to a situation where irregular variations in brightness occur in aurora, such as in fluttering flames.

    • Flaming auroras info

      Flaming. This rare subclass of aurora does not mean so much a single shape, but a large area in the sky. In the flaming aurora, bright waves that are sweeping upward towards the magnetic zenith emerge in the sky. Very rarely waves can wipe downwards. Bands are usually reported during flaming, less often spots.

    • Pulsating auroras info

      Pulsating aurora. The brightness of the pulsating aurora usually varies rhythmically over a period that can be only a fraction of a second at its fastest, but can also be several minutes. Pulsing usually only occurs in(strong auroral conditions) higher quality shows , especially towards the end of them. However, the pulsation may be followed by yet another eruption. Sometimes the variation in brightness is at the same stage in the whole form, whereby the whole form "turns on and off" at the same time. Pulsation is also found in arches and bands, but above all in spots..

    • Red coloration of the shapes top info

      Auroras which have red top part that can be seen with naked eye are most often observed in the bands and long rays. In this case the lower parts are usually green. If the upper parts are in sunlight, red may be stronger than green. This shade of red is due to the discharge of the excitation state of the atomic oxygen.

      Aurora that shift to reddish towards the top. Photo by Karri Pasanen. 

      Red top in a aurora band. Photo by Simo Aikioniemi.

      Red at the top of the aurora. Picture of Tom Eklund.

    • 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.

  • Observed aurora forms
    • ;Veil;Rays;Band;Corona;Arc
Comments: 5 pcs
Matias Takala - 11.6.2013 at 19.11 Report this

Hillittömät koronat! Nyt on ollut Auringossa aktiivisuutta harva se päivä, toivottavasti tulisi 17.3. kaltaiset kelit useampaan kertaan syksyllä kun on tarpeeksi pimeää.

Jari Luomanen - 11.6.2013 at 20.00 Report this

Pidetään tosiaan peukkuja sille!

Olli Sälevä - 11.6.2013 at 20.40 Report this

Voiko noita edes kommentoida? ;-)

Jari Luomanen - 11.6.2013 at 20.48 Report this

:-D Itselläni loksahti leuka sijoiltaan kun jalustaa tärisevin käsin pystyttäessäni vilkaisin taivaalle ja näin koronan kirkkaimmillaan. Se oli hieno hetki.

Mikko Peussa - 12.6.2013 at 17.30 Report this

Hyvä ajoitus, teräviä ja erittäin kauniita kuvia. Värien kirkkaus Tampereella on ollut hämmästyttävä, jos vertaa saman illan muihin koronakuviin. On kuin Fuji Velvian sävyt diakuvausajoilta. Sillähän sai reposten värit korostumaan ja varsinkin lintujen värit muuttui joskus niin, että häiritsi jo lajien tunnistamista.

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