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Contact information

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

Ursa Astronomical Association

One halo form - 23.3.2021 at 20.15 - 24.3.2021 at 01.00 Ulvila Observation number 97048

Visibility I / V

Juha Ojanperä, Porin Karhunvartijat

At times, even a bright 22-degree ring around the Moon was recorded in the Bear Camera's images.



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Additional information
  • The halo was caused by lightsource:
    • Moonlight
  • Where are the ice crystals of the halo located?
    • Upper clouds
  • Yleiset halomuodot (kuunvalo)
    • 22° rengas
Technical information

Camera: ZWO ASI 120MC-S, wide-angle lens, Thomas Jacquin's Allsky Raspberry Pi 4 in Model B, automatic shooting and image processing

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