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Contact information

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

Ursa Astronomical Association

Sun - 22.4.2015 at 11.50 Järvenpää Observation number 37253

Visibility Unclassified

Keijo Toikkanen, Keski-Uudenmaan Altair

In the sun, a C3.8-class rumble at about 11 a.m. and an M1.1-class rumble at about 11:40. Both were from the sunspot group AR2322, which is turning out of sight.


Additional information
  • Observation target
    • Sun
    • Luokittelematon
Technical information

Solar storm radio telescope, antenna diameter 60 cm

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