Contact information

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

Ursa Astronomical Association

Kangastus - 6.9.2015 at 13.36 Vöyri, Oravaistenlahti Observation number 42079

Visibility III / V

Marko Myllyniemi, Lakeuden Ursa

The Vöyri from the resting area of Oravaistenlahti in the direction of the open sea showed some canvas, but due to a cloudy and rainy day it was not quite as spectacular as when driving past in the sunshine the day before (although it was not possible to stop to shoot at that time).


Additional information
  • 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

Canon 70D, Sigma DC 18-250 OS HSM (@ 250mm)

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