Active aurora band - 28.2.2023 at 21.00 - 1.3.2023 at 04.00 Hankasalmi, Murtoinen Observation number 112781

Visibility III / V

Arto Oksanen, Jyväskylän Sirius

For the third night in a row, the aurora borealis in the images of the Hanakasalmi observatory's allsky camera. Now the northern lights remained in the northern sky and were quite modest compared to the previous ones.

All night timelapse: https://www.youtube.com/watch?v=dqPhlqMuYXc

This description has been automatically translated from Finnish. Click here to see the original text.

0 1

Additional information

Aurora brightness
- Bright auroras
Observed aurora forms
- Arc
  
  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
  
  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.

Technical information

Alcor System OMEA-1.3M-HCA AllSky Camera

Comments: 3 pcs

Maritta Kinnunen - 1.3.2023 at 12.57

Näitä tallenteita on mielenkiintoista katsella :) seuraan muutenkin revontulikameraa. Välimatkaa on kuitenkin Saarijärvelle niin ei ihan samat näkymät taida olla. Tosin olen vasta aloittelija niin en tiedä :D Eilen kello 23.27 näkyi täällä yllättäen harsoa ja säteitä. Ei kestänyt kuin noin 10 minuuttia. Eikä mitään upeita muotoja tullut lisäksi mutta kirkkautta oli kuitenkin. Helposti jää huomaamatta näin nopeat tapahtumat.

Arto Oksanen - 1.3.2023 at 13.37

Revontulet näkyvät samanlaisina suurella alueella, joten ei varmaankaan ole suurta eroa Saarijärven ja Hankasalmen näkymissä. Keski-Suomessa pohjoistaivaalla näkyvät revontulet ovat oikeasti Lapin yläpuolella. Sääolosuhteet voivat vaihdella paljonkin, joten voi olla että toisaalla näkyyy ja toisaalla ei näy mitään kun taivas on pilvessä.

Maritta Kinnunen - 1.3.2023 at 14.21

Kiitos vastauksesta. Aina oppii uutta kun uskaltaa kysyä :)

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.

Newest observations

Contact information

Active aurora band - 28.2.2023 at 21.00 - 1.3.2023 at 04.00 Hankasalmi, Murtoinen Observation number 112781