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Ursa Astronomical Association

Diffuse glow - 25.1.2012 at 00.13 Tampere Observation number 1539

Visibility I / V

Jari Luomanen, Ursa (Länsi-Suomi)

Very dim echo behind a thin gauze. It came out so well in the long exposure. Of course, it was also visible visually.

I would have chosen gauze as the title if one had been available.

More similar observations
Additional information
  • Aurora brightness
    • Very dim auroras
  • Observed aurora forms
    • Veil info

      Veil is the most bland and very common form of aurora. It usually covers its homogeneous dim glow over a wide area of the sky at once. Most often, the veil is seen in the calmer and quiet phase of the night after the aurora maximum as a background for other forms. The veil can also occur alone and in that case it will be quite difficult to reliably identify as an aurora, especially at a observation site which has a lot of light pollution.

      A similar glow of light can also be caused by airborne moisture, smoke, or a very thin layer of clouds that reflects the light that hits them. However, clouds can also be used to identify veil, especially if the middle or upper cloud appears dark against a lighter background, then it is very likely to be aurora veil if the brightness of the background sky is not due to the rising or falling Moon or Sun. When photographing, very long exposure times usually reveal the green colour of the veil auroras.

      Veil and rays. Photo by Esa Palmi.

      Red aurora veil. Photo by Marko Mikkilä.


      Veil. Photo by Milla Myllymaa.


      Aurora veil that changes color from green at the lower edge through purple to blue at the top. Photo by Jaakko Hatanpää.


      Dim green veil. Photo by Jarmo Leskinen.


      Radial aurora band surrounded by veil. Photo by Jussi Alanenpää.

Comments: 4 pcs
Marko Pekkola - 25.1.2012 at 16.14 Report this

Harson puuttuminen revontuliotsikoista on ilmeinen ongelma, joka pitää korjata. Kiitos kun toit esille.

Jari Luomanen - 25.1.2012 at 16.32 Report this

Olisihan se toki kuvaavampi näille hailakoille ilmestyksille.

Marko Pekkola - 6.4.2012 at 23.44 Report this

Nyt on mahdollista valita revontulinäytelmän otsikoksi harso. Ja vaihdettu tähän.

Jari Luomanen - 7.4.2012 at 00.13 Report this

Hieno juttu!

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