Contact information

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

Ursa Astronomical Association

All-sky aurora - 7.10.2015 at 19.50 - 7.10.2015 at 22.00 Aura Observation number 87838

Visibility V / V


I had to check the first northern lights pictures of my life that were taken on October 7, 2015 and there seemed to be a dune to be found there.



More similar observations
Additional information
  • Aurora brightness
    • Very bright auroras
  • Observed aurora forms
    • Dunes info

      Dunes

      The dunes are a dim and very rare shape that has so far been associated with the aurora visible in early evening.

      Aurora dunes can be most easily confused to ribbons on lower clouds. In order to fill in the description of the phenomenon, a striped pattern formed by parallel lines must also appear in the aurora. The stripes are most easily recognizable right at the front edge of the aurora but they may also occur among the rest of the aurora.

      The dune auroras are visible as a parallel striped float. Photo by Tapio Terenius

      Raidallisen dyynilautan reunassa voi toisinaan olla voimakastakin aaltoilua.

      There can sometimes be strong ripples at the edge of a striped dune float. The rippling of the edge of the dune float can vary from minor to large (pictured). Photo by Pirjo Koski

Comments: 2 pcs
Jouni Lehtola - 30.1.2020 at 12.18 Report this

jep

Jarkko Alatalo - 30.1.2020 at 15.10 Report this

Tuo ilta on minun hienoimpia iltoja revontulien osalta. Minun kuvissa ei kuitenkaan ole noita dyynejä. Pitäis vielä katsoa onko kovalevylle jäänyt tuolta illalta muita kuvia. 

https://jarkko.1g.fi/kuvat/Kuva-arkisto/2015/Revontulet+Raahessa,+7.10.2015/

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.