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Ursa Astronomical Association
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Ursa Astronomical Association

Clearly visible night shining clouds - 30.6.2021 at 01.03 - 30.6.2021 at 01.55 Espoo Observation number 99235

Visibility III / V

Janne Sievinen, Ursa (Helsinki)

Well-lit illuminated night clouds to the north and east, photographed in Espoo along the Länsiväylä. Timing of images 1.45 (main image) 1.03, 1.18, 1.38 and 1.55.

More similar observations
Additional information
  • Havainto
    • Night shining clouds
  • Cloud coverage in the sky
    • Covered 1/8 of the sky
  • Noctilucent clouds
    • Swirl info

      Swirls are curved night shining cloud forms. For example, a single night cloud belt or group of waves may be curved on a clear bend.

      The arrow indicates a slight vortex in the night cloud belt. Photo by Joni Tahkoniemi.

      Strong swirls in image taken by Veikko Mäkelä.

    • Waves info

      Waves of noctilucent clouds are short, close groups of clouds.

      Wavy NLC by Jari Luomanen.


      NLC waves by Hannu Määttänen.

    • 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
    • Clearly visible night shining clouds
Technical information

Canon 650 EOS 650D | Sigma DC 17-50 mm 1:28 EX HSM | f / 3.2 ISO 100 1/6 s.

Comments: 2 pcs
Timo Alanko - 30.6.2021 at 16.10 Report this

Hienot kuvat! 

Mikko Peussa - 1.7.2021 at 23.06 Report this

Hieno setti! Alkaa yöpilvissä olla jo näköä.

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