Contact information

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

Ursa Astronomical Association

Quiet aurora arc - 4.11.2018 at 22.50 - 5.11.2018 at 00.00 Nokia Observation number 101665

Visibility II / V


Old observation from the archive, Possible SAR observation in Nokian Kulju.

November 4, 2018 at

The main image is facing west, as is the next. The last one is to the east.

The redness was stronger in the western sky.



More similar observations
Additional information
  • Observed aurora forms
    • Stable Auroral Red (SAR) arc info

      The Stable Auroral Red arcs (SAR arcs)  are usually clearly distanced to the south from the aurora oval and is a very opaque and normally red ribbon. In most cases SAR arcs are only visible in the photo or on the liveview screen of the SLR camera. Using a camera with very high sensitivity is the best method for capturing these faint arcs. The arch usually settles between east and west.

      A stable red arc of aurora is a rare phenomenon. In some rare occasions, several SAR arcs may be simultaneously visible.

      The first SAR arcs of the Skywarden were observed on nights between November 3-4. and 4-5. days in 2015 in the latitudes of central Finland.   

      SAR
      SAR arc photographed by Lasse Nurminen 2018. Observation of the Skywarden 79113.

Comments: 2 pcs
Emma Bruus - 2.10.2021 at 20.39 Report this

Hieno SAR... tai kaksikin ehkä! 

Eero Karvinen - 5.10.2021 at 00.25 Report this

Komea SAR-kaari ykköskuvassa ja muutenkin hyviä otoksia!

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