Contact information

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

Ursa Astronomical Association

Bright night shining clouds - 27.7.2021 at 23.30 - 28.7.2021 at 00.35 Ulvila Observation number 100064

Visibility IV / V

Juha Ojanperä, Porin Karhunvartijat

A really nice night cloud play was shown on the night of July 27/28, 2021. The night clouds appeared quite early, around 11:30 p.m. The lower clouds somewhat obstructed the view of the night clouds. The night clouds were visible in the northern sky, in the form of gauze, belts, and waves. There were also some shapes going into the vortex class.



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
    • Bright night shining clouds
Technical information

Camera: Canon EOS 1100D, Canon EF-S 18-55mm, Samyang 8mm

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