Clearly visible night shining clouds - 22.7.2021 at 00.20 - 22.7.2021 at 01.40 Mäntyharju Observation number 99838

Visibility III / V

Jukka Kytömäki

Again, they illuminate. Started before midnight dim, but Cloudiness prevented filming. As the clouds receded, there was already a movement. From the northeast rose a herringbone pattern and a camera to shoot images. When the clouds arrived again, the pattern of bones also disintegrated.

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Additional information

Havainto
- Night shining clouds
Cloud coverage in the sky
- Covered 1/4 of the sky
Noctilucent clouds
- Waves
  
  Waves of noctilucent clouds are short, close groups of clouds.
  
  Wavy NLC by Jari Luomanen.
  
  NLC waves by Hannu Määttänen.
- Band
  
  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
  
  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

Camera / wire shutter + lock on for continuous shooting 10sec / big 200 for about ½ hours.

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Clearly visible night shining clouds - 22.7.2021 at 00.20 - 22.7.2021 at 01.40 Mäntyharju Observation number 99838