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Ursa Astronomical Association

Rocket-related clouds - 29.3.2023 at 23.03 - 29.3.2023 at 23.06 Kouvola Observation number 113920

Visibility IV / V

Tero Sipinen, Ursa (Etelä-Suomi)

I thought I'd be in a hurry to watch the launch of Soyuz 2.1, but I didn't have time. When I got to the shooting hill with a gust of wind, I looked at the countdown on my cell phone and realized that three princely minutes were left to prepare. I focused and took a couple of test exposures in the sunta of the east and then looked around. The conditions were great, no clouds anywhere. I noticed a red flashing light towards the northwest, which I thought was NH90. There were a couple of them flying over Myllykoski during the day. I turned the camera towards it and clicked while waiting for pictures of it. Sometimes I remembered to glance to the east and heartily, there was already a handsome fan in the sky there! Suddenly the camera is there, a picture and then a correction of the camera's position. And then a succession of 4 sec exposures with the remote shutter release.

The rocket moved surprisingly fast. Well, it's a rocket :) I snapped pictures until the rocket disappeared into Kouvola's stray light and a little more, just in case the remnants of the exhaust gas clouds were visible in the pictures, even if I couldn't distinguish them with my eyes. According to the pictures, it reached the (presumed) NH90 as it went east (Utti?).

While flipping through the pictures, I noticed that a couple of fainter objects followed the rocket. Lower stages?

While examining the pictures more closely at Kotosa, I noticed in the second test picture taken on 23.00.24 (picture 2) a red streak at the bottom right (picture 3 100% cropping), which at first I thought was a drawing of a cosmic ray, but maybe it is a Soyuz after all? In the first photo, taken on 22:59:50, it is not visible, and unfortunately after the second test photo, I got lost for a while and shot in the wrong direction. I made a composite picture (picture 4), which I used to try to figure out whether the streamer would match the rocket's trajectory in terms of direction and time. Yes and maybe.

This stunt succeeded beyond expectations, but there was room for improvement: it would have been nice to see the beginning of the flight as well. You shouldn't look at helicopters when there's a rocket coming!


#raketti: Soyuz 2.1y
#satelliitti: Kosmos 2568



More similar observations
Additional information
  • Havainto
    • Rocket-related clouds
  • Cloud coverage in the sky
    • Very small area
  • 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
Comments: 11 pcs
Joni Virtanen - 30.3.2023 at 08.43 Report this

Mistä seurasit lähtölaskentaa? Yritin löytää kiireellä kuvauspaikalla mutta en löytänyt.

Pirjo Koski - 30.3.2023 at 10.33 Report this

Meillä meinas mennä kanssa pyörimiseksi :D 

Timo Alanko - 30.3.2023 at 11.24 Report this

Tää on vähän ristiriitainen tapaus. Näyttävä kyllä, mutta mihin tuota tiedustelusatelliittia voitaisiin käyttää? Ei tarvinne kauheasti arvailla...

Tero Sipinen - 30.3.2023 at 19.18 Report this

Kiitoksia kommenteista! Lähtölaskenta näkyi sivustolla spacelaunchschedule.com

Se piti vielä mainita että kiinnitin omissa kuvissa huomiota siihen, että alemman jättövanan jämät näyttivät lopussa vähän punertavilta. Muidenkin havainnossa näkyy punerrusta, esim. Markku Siljaman viimeisessä kuvassa ja Heikki Hautalan useammassakin kuvassa. Mietin jo että onko vain siitä kyse, että ilmakehän epäpuhtaudet saa aikaan punerruksen, mutta omia otoksia edustavammista kuvista huomaa että taitaakin olla revontuliin liittyvää punerrusta? "Punaiset yläosat" vai jotain eksoottisempaa?

Markku Siljama - 30.3.2023 at 19.47 Report this

Kiinnitin huomiota samaan punerrukseen ja pähkäilin pitkään onko ne revontulia kun olivat vielä paikoillaan mutta..Hankasalmen laajakulmakuvissa ne näyttävät olevankin raketin itäisempi,oikeanpuoleinen,jättövana kun taas läntinen,vasen,jättövana on sinertävä ja liikkuu nopeasti länteen.

Jokin aiheuttaa tuon punerruksen jättövanaan.Onko polttoaine erilaista tai johtuuko se senhetkisestä revontulista vai jotain muuta?Katsonpa kuvat uudestaan..

Tero Sipinen - 30.3.2023 at 20.21 Report this

Uskoisin, että punerrus ei ole jättövanassa vaan se takana: sattumalta samaan aikaan syttyneet punaiset reposet.

Markku Siljama - 30.3.2023 at 20.41 Report this

Hmm,heitin uuden haviksen tuosta punerruksesta.Voisi olla reposet tai voisi olla jättövana..enpä osaa heti sanoa.Hyviä ideoita,huomioita,näkökulmia..?.:)

Tero Sipinen - 30.3.2023 at 22.06 Report this

Yksi näkökulma on se, että miksi yksi vana olisi sinertävä ja toinen punertava?

Ja tämä komea, juuri ilmestynyt kuva Siikalatvasta on paljastava: punertaa myös raketin edellä

Markku Siljama - 30.3.2023 at 22.09 Report this

Asia selvä,tuo kertoi kaiken..:)

Tero Sipinen - 30.3.2023 at 22.12 Report this

Pohjoisempaa nähtynä jättövana jäi enemmän "oikealle" punoituksesta, täältä etelämpää sattuivat just sopivasti samalle linjalle :)

Mikko Peussa - 31.3.2023 at 07.44 Report this

Hieno setti ja upea video!

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