Contact information

Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

Diffuse glow - 25.1.2022 at 19.02 Jämsä Observation number 104285

Visibility I / V


I was walking the dog and outside the street lights I noticed a northern lights in the northern sky. SAR arches had been observed by this time, but I didn't notice.



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

      Veil
      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: 2 pcs
Terhi Törmälä - 28.1.2022 at 16.53 Report this

SAR-kaari ei juuri koskaan näy paljain silmin. Tai käsittääkseni voisi sanoa, että melkein ikinä omin silmin. Erottuu vain valokuvissa. Kirkas punainen/pinkki alaosa näkyy paljain silmin, mutta siihen suunnilleen se jääkin eri värien näkymisen suhteen, ellei sitten ole todella kovan luokan avaruusmyrsky.

Eila Tiirinen - 28.1.2022 at 20.09 Report this

Kiitos kommentista. Selasin ottamiani kuvia läpi, mutta SAR ei ollut osunut kuviin, vaikka niitä vähän käsittelinkin. Totta on, että SAR hankala havaita paljain silmin, kuvaustilanteessa kyllä katselin ympäri taivasta. Olen vähän noviisi näissä revontuliasioissa.Joitakin vuosia sitten sain SARin  kuvattua, kun olin kuvaillut tähtitaivasta muualtakin kun revontulia päin. Kun taivaanvahtiin tuli ilmoituksia SARista sinä iltana, niin löytyihän se minunkin ottamista kuvista. Kiva kuvata revontulia, ja hienoa niitä katsella!

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.