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Contact information

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

Ursa Astronomical Association

Rare halos - 6.1.2016 at 18.00 Rovaniemi Observation number 48749

Visibility IV / V

Not visible

Here is an assortment of Leftover images from the 6/7 January night. In the first image the emphasis is to highlight what appears to be blue color in the sub-Liljequist parhelion. Although we have not made a custom simulation, the location of this segment seems to agree with the theoretically Predicted blue segment for the Liljequist sub-parhelion. In the second image highlighted are the 120 ° and sub-120 ° parhelias. In the rest of the images visible are, among other things, the sub-cza and sub-Kern. The final image is a display formed in the Rovaniemi power plant plume.

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An assortment of surplus photos from January 6/7 night. The first image highlights what would appear to be a blue color in the side sun of the Lower Liljequist. Although we have not performed a customized simulation, the location of the blue color would appear to be consistent with the theoretically predicted blue segment of the lower side sun of Liljequist. In the second figure, an attempt has been made to emphasize the 120 ° and lower-120 ° side suns. The remaining pictures show e.g. ala-zyk and ala-Kern. The last picture is a play formed in the plum of the Rovaniemi power plant.

MMikkilä / JMoilanen / NLefaudeux / MRiikonen


Additional information
  • The halo was caused by lightsource:
    • Artificial light source
  • Where are the ice crystals of the halo located?
    • Ice crystals
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