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Ursa Astronomical Association
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Ursa Astronomical Association

Rocket-related clouds - 29.3.2023 at 23.04 - 29.3.2023 at 23.07 Kokkola Observation number 113910

Visibility IV / V

From Kokkola's Patamäki, the city lights and trees were longingly ahead in the east. I still set up the camera and was already giving up hope. In the 80s, I saw several launches from the window of my own room, which was in just the right direction. To my surprise, the rocket appeared among the light pollution of the city and traveled through the sky at a fairly high speed towards the west. There was a lot of snow at the shooting location and that, together with the congealed oils on the tripod, caused unnecessary fuss. However, the view was wonderful and luckily I was able to take pictures. In the first picture, the two dots coming after the rocket stand out. In Figure 3, there is apparently a phase separation and there are interesting waves in the output coil.

#raketti: Soyuz 2.1y
#satelliitti: Kosmos 2568

More similar observations
Additional information
  • Havainto
    • Rocket-related clouds
  • Cloud coverage in the sky
    • Covered 1/8 of the sky
  • Rocket launch
    • Rocket contrails info

      The rocket contrails are colorful clouds that appear when the sun is below the horizon. The contrails can float so high in the atmosphere that the sun shines on them even if it is already completely dark on the ground. They stay visible noticeable quite long after the launch.

      The colors are created by the scattering of sunlight in the small ice crystals. In Finland, rocket phenomena from two different locations have mainly been observed. One of them is the missile launches from the submarines from the White Sea and the Arctic Ocean. They use solid fuel that creates colorful clouds.

      Another source of rocket phenomena is the Plesetsk Cosmodrome Area in Russia. There are a few launches from there every year. These fires usually use liquid fuels, making the clouds less spectacular.

      The visibility of the rocket launch is affected by the time at which the launch is made and where the winds blow. The best of all is around 3-5 o'clock Finnish time, when the cloud has time to spread out a bit and shine in the morning sun coming from the east when it is still dark or dark in Finland.

      During the first decade of the 2000s, rocket phenomena have been observed about twice per year in Finland. Since then, however, it has been quieter.

      Rocket contrails from Oulunsalo, Photo by Jarmo Moilanen.

    • Rocket phase visible in the sky info
Technical information

Nikon D800 + Samyang 85mm 1.4

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