Contact information

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

Ursa Astronomical Association

Kangastus - 13.6.2018 at 11.49 Valkeakoski, Sääksmäen silta Observation number 74556

Visibility III / V

Marko Myllyniemi, Lakeuden Ursa

We stopped for a short break on the Sääksmäki bridge, which I photographed weaving from the cliffs of the P-area far away in the direction of Vanajavesi.


Additional information
  • Lightsource of the phenomenon
    • Sunlight
  • Common atmospheric phenomena
    • Mirage info

      Mirage is a light phenomenon that occurs when there are layers of air of different temperatures in the atmosphere. The light gets reflected between these different layers.

      This can happen, for example, in the spring over the water when the sea is still cold and the sun is already heating up the air .

      In mirages, distant objects may appear even if you do not otherwise see them. Their shape is more or less distorted. Objects like boats or islands may also appear to be hanging upside down in the sky.

      Mirages involving landscape objects and celestial bodies are reported to the Skywarden. Asphalt mirages are not collected, since they are quite common during the summer months.

      In this mirage small islands seem to be hanging from the air over the sea. Image by Peter von Bagh.

      The Moon distorted on a mirage. Photo by Aki Taavitsainen.

      Island mirages over an ocean covered by ice. Image by Pentti Arpalahti.

Technical information

Nikon Coolpix P900

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