Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

Active aurora band - 10.2.2022 at 20.55 - 11.2.2022 at 00.05 Nurmijärvi Observation number 104593

Visibility III / V

Emma Bruus, Ursa (Etelä-Suomi)

In this way, the south rarely complains about the amount of snow. Or that there is so much of it that even the skis sink much deeper than you would like. This white bulge now severely limited the places where it made sense to go.

Without a bigger masteplan, I would pull the sweaters and a coverall over my neck and put Dj Orion in the background to speed up the observation evening. From the lights of Klaukkala, we headed towards the center of Nurmijärvi, sometimes skimming the sky. The greenery in the north raised individual rays and was forced to turn the bow to an old familiar observation site.

At the observation site, only the edges of the road were off-road terrain. Somewhere farther into the night, the fox had more to do than Karpo.

The cars flashed past and it became apparent that the others were also spending Thursday night with a repo. The rest of the evening went smoothly, talking to the couple who happened to be there and the Bangladeshi brother duo. In the repo forest, you can meet absolutely horrible people!

The best set was seen around 9.20pm, with the green, fast-moving and radial belt rising almost to zenith.

An hour-long frost-free stand brought a new use to the fabric mask, which the extra layer of insulation on the face warmed just right.

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.

    • Rays info

      The raysare parallel to the lines of force of the magnetic field, i.e. quite vertical, usually less than one degree thick light streaks. The rays can occur alone or in connection with other shapes, mainly with arcs and bands. Short rays are usually brightest at the bottom but dim quickly. The longest rays, even extending almost from the horizon to the zenith, are usually uniformly bright and quite calm, and unlike the shorter rays, most often occur in groups of a few rays or alone. Rays, like bands, are a very typical form of aurora.

      Artificial light pillars, which are a halo phenomenon visible in ice mist, can sometimes be very similar to the rays of aurora. Confusion is possible especially when the lamps that cause the artificial light pillars are far away and not visible behind buildings or the forest. The nature of the phenomenon is clear at least from the photographs.

      Rays. Picture of Tom Eklund.

      Rays. Photo by Mika Puurula.

      Two beams rise from the aurora veil. Photo by Anssi Mäntylä.

      Two radial bands. Show Jani Lauanne.

      Radial band and veil. Photo by Jussi Alanenpää.

      Two rays. Photo by Aki Taavitsainen.

      It may be possible to confuse such rays with artificial light columns. Compare the image below. Picture of Tom Eklund.

      There is no aurora in this image, but all the light poles - including the wide and diffuse bar seen at the top left - are artificial light pillars born of ice mist. Photo by Sami Jumppanen.

      Aurora and artificial light pillars. All the radial shapes in the picture above are probably artificial light pillars that coincide appropriately with the aurora band. In the image below, the aurora band has shifted and does not overlap with the pillars produced by the orange bulbs. There is no orange in auroras. Photo by Katariina Roiha

Comments: 3 pcs
Mikko Peussa - 20.2.2022 at 15.22 Report this

Hieno setti. Vilinää hangella ja taivaalla :)

Minna Glad - 23.2.2022 at 09.43 Report this

Kauniisti ne tulet siellä kiemurtaa, ja hauska seurata ihmisten puuhailuja samalla!

Pirjo Koski - 23.2.2022 at 19.45 Report this

Nätit kuvat ja kiva kertomus! 

Send a comment

Comments are checked and moderated before publication If you want to contact the observer directly about possibilities to use these images, use the Media -form.



characters left

By sending in this comment I confirm, that I've read and understood the the observation system's privacy policy.