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Ursa Astronomical Association

Half-sky auroras - 16.3.2023 at 00.00 - 16.3.2023 at 01.47 Ulvila Observation number 113451

Visibility IV / V

Vesa Puistovaara, Porin Karhunvartijat

An experiment to get a corona discharge on video recording with the south-west camera of Karhukamera (Karhu VI). The camera could not be turned closer to the zenith, but at least something was captured from this.

EDIT: addition to observation (March 17, 2023):

The Northern Camera recording before and after the rapid appearance of the corona eruption (around 01:00) is worth watching via YouTube. Too big a video to share here, but the video shows a lot of these repos as well!

Especially the pulsation of the northern lights is better visible, because the individual images have a very short exposure time, 15 frames per second, and current surveillance cameras are surprisingly sensitive and accurate in terms of their dynamics for observing the northern lights.

Of course, the video has been sped up 32 times, because otherwise its duration would be unbearably long for many people (two hours of recording). It's worth a look, because you can see these "pulsating aurora borealis" quite well - and much more...

Link to the video:

More similar observations
Additional information
  • Aurora brightness
    • Bright auroras
  • Observed aurora forms
    • Corona info

      CoronaA corona is a hand fan shaped structure, it usually forms south of the observer's zenith, most commonly consisting of rays or bands. The corona is usually the most beautiful part of the aurora show. It is bright and active, but on the other hand also short-lived.

      Aurora corona. Photo by Anna-Liisa Sarajärvi.

      Aurora corona. Photo by Merja Ruotsalainen.

      Corona formed from bands. Photo by Markku Ruonala.

      Aurora corona. Photo by Tapio Koski.

Technical information

camera: Tapo C200

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