Bright night shining clouds - 26.7.2018 at 00.30 - 26.7.2018 at 02.30 Pieksämäki Observation number 75692

Visibility IV / V

Rauno Pakarinen

I noticed clouds from a webcam (Hankasalmi Observatory full sky image) at about 0:15. They must have been seen as soon as the twilight of pleasure began; were so bright! I took my own pictures in Pieksämäki; On the sandy beach mostly and the rest when I return home from the yard of the local City-Market.

The clouds were very bright and might have even been categorized as “eye-catching,” but as a cautious man, I put it in a lower category. The brightest parts were visible in the northern sky and the eastern sky. Really distinctive belts and waves! The phenomenon then disappeared only near dawn ... :)

This description has been automatically translated from Finnish. Click here to see the original text.

20 17

Additional information

Havainto
- Night shining clouds
Cloud coverage in the sky
- Covered about half of the sky
Noctilucent clouds
- Swirl
  
  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
  
  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
- Bright night shining clouds

Technical information

Instruments used: Canon EOS 6D // Canon 24-105mm f4.0L // sensitivity ISO 400 // shot with aperture f5.6 // shutter speeds approx. 0.5-2.5 seconds

Comments: 2 pcs

Satu Juvonen - 26.7.2018 at 15.40

Hienot kuvat!

Rauno Pakarinen - 26.7.2018 at 16.30

Kiitos Satu! Parhaat valtsut pitkiin aikoihin... jep otin ite käyttöön tuollaisen lyhenteen :)

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Bright night shining clouds - 26.7.2018 at 00.30 - 26.7.2018 at 02.30 Pieksämäki Observation number 75692