Newest observations

Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

Active aurora band - 16.3.2023 at 00.30 - 16.3.2023 at 01.00 Hamina Observation number 113541

Visibility III / V

When photographing the northern lights, I noticed very fast , successive waves moving across the sky - difficult to describe - like faint "hail waves" that traveled "from north to south". Impossible to film with a system camera (fx). It wasn't about the dunes, for example. Colorless to the eye. This is the second time I have observed this phenomenon.

More similar observations
Additional information
  • Colors with unaided eye and other features
    • Pulsating auroras info

      Pulsating aurora. The brightness of the pulsating aurora usually varies rhythmically over a period that can be only a fraction of a second at its fastest, but can also be several minutes. Pulsing usually only occurs in(strong auroral conditions) higher quality shows , especially towards the end of them. However, the pulsation may be followed by yet another eruption. Sometimes the variation in brightness is at the same stage in the whole form, whereby the whole form "turns on and off" at the same time. Pulsation is also found in arches and bands, but above all in spots..

    • Flaming auroras info

      Flaming. This rare subclass of aurora does not mean so much a single shape, but a large area in the sky. In the flaming aurora, bright waves that are sweeping upward towards the magnetic zenith emerge in the sky. Very rarely waves can wipe downwards. Bands are usually reported during flaming, less often spots.

Technical information

Iso 800-1600, f2.8-4, 3-8sec.

Send a comment

Comments are checked and moderated before publication If you want to contact the observer directly about possibilities to use these images, use the Media -form.



characters left

By sending in this comment I confirm, that I've read and understood the the observation system's privacy policy.