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Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

Bright night shining clouds - 17.8.2015 at 02.15 - 17.8.2015 at 02.30 Ulvila Observation number 41269

Visibility IV / V

Juha Ojanperä, Porin Karhunvartijat

Night clouds on a very low northern horizon. The night clouds reached a maximum height of 2 degrees. western boundary: 5 degrees, eastern boundary 40 degrees. The night cloud area was very small but bright. At the same time, the northern sky also showed a dim arc of northern lights with a uniform and unmistakable brightness distribution.

Brightness: 3-4 (1-5)

Credits: 1 (1-5)

Night cloud forms: I, IIa, IIb

Figure 1. North, 2:28 p.m.

Figure 2. North, 2:31 p.m.

More similar observations
Additional information
  • Havainto
    • Night shining clouds
  • Cloud coverage in the sky
    • Very small area
  • Noctilucent clouds
    • Band info

      Bands of noctilucent clouds are long, stripe like cloudformation.

      A single, very bright NLC band. Photo by Mikko Peussa.


      On the upper left corner, rising bands are clear on the image. Whereas waves of NLC cover the bottom right side of the image. Photo by Juha Tonttila.

    • Veil info

      The night cloud vail is a vague thin night shining cloud with no clear structure.

      Noctilucent cloud veil with one strong belt formation. Image by Veikko Mäkelä.

  • Brightness of the noctilucent clouds
    • Bright night shining clouds
Technical information

Camera: Canon EOS 1100D + Tamron 10-24mm zoom

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