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Ursa Astronomical Association

Clearly visible night shining clouds - 20.7.2021 at 02.30 - 20.7.2021 at 02.43 Kouvola Observation number 99906

Visibility III / V

Tero Sipinen, Ursa (Etelä-Suomi)

After describing the ISS , I still tried to look at the sky for night clouds. Not really anything seemed to be found, the only suspects turned out to be low clouds because of their speed of movement. I was already giving up until, as a result of a small change of location, I noticed that there was one single sharp line in the shallow north. At that point, I still doubted whether he would be an abandoner when he was the only one of his kind, but on the other hand, I guess the abandoner should appear dark. I started shooting timelaps and during that I received information from Mikko Peussa that the same beach can be seen in Turku as well, so it was confirmed as an illuminating night cloud. The drop was that a good tube of illuminating night clouds didn’t break for my part. This was already the eleventh night on the tube.

The first image is the first shot (at 2.30) immediately after noticing the cloud cover. The second image is a little more tightly delimited timelapse from 2.33 to 2.43. The animation shows that the night cloud beach would disappear completely at the end, but the features of the night cloud can still be distinguished from the raw image of the last screen, so maybe a few minutes would have gotten the rest of the time if it had bothered.

Next, then on the night of July 20-21. to attack the mega-screen image catch. Let's get back to it in 'n' days ...

More similar observations
Additional information
  • Havainto
    • Night shining clouds
  • Cloud coverage in the sky
    • Very small area
  • Noctilucent clouds
    • 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.

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