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Contact information

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

Ursa Astronomical Association

Dim night shining clouds - 20.6.2021 at 23.34 - 21.6.2021 at 02.25 Espoo Observation number 99038

Visibility II / V

Panu Lahtinen, Pollux, Aalto-yliopisto

Tiavaskamera camera observation. In the first video a video composed of maximum stacks of 60 s, in the second approximately the same period so-called. of "magic stacks," i.e., average stacks minus the stack a couple of minutes earlier, and the end result stretched by linear fitting.

The latter video also shows high twilight rays.



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.

    • 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.

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

Watec WAT-902H3 Ultimate, Novus NVL-2812D / IR 2.8-12 mm f / 1.2

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