Contact information

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

Ursa Astronomical Association

Bright night shining clouds - 8.7.2022 at 00.30 - 8.7.2022 at 01.00 Vantaa, Pähkinärinne Observation number 107531

Visibility IV / V

Paula Wirtanen, Ursa (Helsinki)

The brightest night clouds were in the northeast, where the brightness of the belts was K=4, elsewhere the brightness was K=3 and dim gauze. I would estimate that the extent is about a quarter of the sky.

In the northeast, the bright belts were somehow thick and lumpy, but I can't say whether they would meet the hallmarks of an unusual shape. The color was a clear blue glow and pearly (picture 1).

Figure 2 taken with a mobile device, a wider area in the sky, from the north and northeast direction. Almost imperceptible to the naked eye, the gauze and dimmer bands continue high into the sky.

Photo 3 from my standard observation terrace facing northwest, it was really quite empty here. However, the picture clearly shows how to distinguish an illuminating night cloud from an ordinary unilluminated cloud: an illuminating night cloud is always pearly bright and blue-toned, ordinary clouds become either reddish or later dark. In this picture, you can see both beautifully next to each other.

I was also caught in the act itself, two dogs loudly told their owners that they had spotted me. However, after a small barking session, they really wanted a snack.



More similar observations
Additional information
  • Havainto
    • Night shining clouds
  • Brightness of the noctilucent clouds
    • Bright night shining clouds
  • Cloud coverage in the sky
    • Covered 1/4 of the sky
  • Noctilucent clouds
    • 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.

    • 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.

Technical information

Nikon D3500, Nikkor AF-P 18-55 mm (images 1 and 3), iPhone SE 2020 (image 2). Images processed by increasing contrast and using an unsharp mask.

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