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Ursa Astronomical Association

Quiet aurora arc - 25.4.2017 at 01.01 Laukaa Observation number 63528

Visibility II / V

The calm, stationary arch was dimly visible from 0.29 to 2.05. Towards the end, more light mist appeared on the bush in the second picture, but very faintly. The highlight was the slowly flying meteorite, which appeared just as the exposure was going on. Coincidence too! So I was hoping to intercept a meteorite flight, now it happened. Good end to my first repo season.

More similar observations
Additional information
  • Aurora brightness
    • Dim 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.

Comments: 2 pcs
Tero Sipinen - 25.4.2017 at 19.54 Report this

Onnittelut toiveen toteutumisesta! (Kun näkee tähdenlennon, kannattaa toivoa. Vaikkapa uutta tähdenlentoa :)

Upeasti näkyy värit vanassa!

Tarja Kouvo - 25.4.2017 at 20.28 Report this

Kiitos. Tutkin Ursan sivuja ja mielestäni näin Lyridien meteorin. Sen aktiivisuusaika päättyy tänään. Sääkin oli viime yönä kirkas kuvata.

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