Quiet aurora band - 7.9.2017 at 23.15 - 7.9.2017 at 23.30 Kuusamo Observation number 66826

Visibility II / V

Erkki Antikainen

As Hossa's sky was covered with cloud gauze, we went to look for a clearer place in the direction of Kuusamo. After a short active moment, the sky was covered with a cloud there too!

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

6 4

Additional information

Aurora brightness
- Very dim auroras
Observed aurora forms
- 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.

Colors with unaided eye and other features
- Green auroras
  
  Green, seen with the naked eye, is one the most common colors of the aurora. The green color is derived from atomic oxygen.
  
  Green auroras. Lea Rahtu-Korpela.
  
  Green auroras. Photo by Juha Ojanperä.

Technical information

Canon 6d, Canon 24mm, f4

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

Quiet aurora band - 7.9.2017 at 23.15 - 7.9.2017 at 23.30 Kuusamo Observation number 66826