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Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

Negative observation of missing night shining clouds - 31.5.2023 at 00.18 - 31.5.2023 at 01.09 Helsinki Observation number 116457

Visibility Unclassified

I started the observation at 23:50, but it wasn't until after midnight that the sky cleared sufficiently for a negative observation. The observation sites cover the area between lunch and northeast, in the west and east trees limit visibility. All images have been processed with Lightroom. In image 5, I moved the white balance setting reading a lot hotter to 44579 kelvin, because it better reveals the warm tone of the group of clouds in the center. In the other pictures, the reading is 7249 K.

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  • Havainto
    • Negative observation of missing night shining clouds
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