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Ursa Astronomical Association
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Ursa Astronomical Association

Sumusäteitä - 10.1.2020 at 16.29 Tampere Observation number 87354

Visibility III / V

Markku Lintinen, Tampereen Ursa

The western fireball camera of the Ursan Kauppi tower in Tampere showed a strange-looking shadow in the sky. Already 5 degrees behind the horizon, the sunlight cast a shadow from the steam cloud of the beach tunnel ventilation pipe into the sky. The camera that described the phenomenon shows a near-IR band - the visible light is cut off by a filter mounted in front of the cell.
The direction of the sun is slightly to the left of the link mast.
The phenomenon was visible for a few minutes.

Additional information
  • Lightsource of the phenomenon
    • Sunlight
  • How did the phenomenon move?
    • Stayed put
  • Common atmospheric phenomena
    • Fog rays info

      Sumusäteet ovat sumuun projisoituneita puiden tai rakennusten varjoja.


      Puiden synnyttämiä sumusäteitä. Kuva Mikko Peussa.

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