Active aurora band - 5.9.2017 at 02.06 Lappeenranta Observation number 66734

Visibility III / V

Roope Luukkainen, Etelä-Karjalan nova

It was worth going to use when the satellite values were good. Larger northern supports lit up, than 1.9, although nothing had been promised tonight. An almost full moon would illuminate the sky a little too much.

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6 9

Additional information

Aurora brightness
- Bright auroras
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.

Observed aurora forms
- ;Veil;Rays;Band;Arc

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Active aurora band - 5.9.2017 at 02.06 Lappeenranta Observation number 66734