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Ursa Astronomical Association
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Ursa Astronomical Association

Pearl clouds - 26.1.2023 at 17.00 - 26.1.2023 at 18.00 Sotkamo Observation number 111654

Visibility III / V

Not visible

Are there pearly clouds/pearl brown in the pictures? I personally don't recognize the clear pastel-colored pearls, but there seem to be pearly sightings from other places on the same day, so a doubt arose, could it have been recorded in my own photos as well? The landscape was very purple after sunset, which doesn't stand out so well in the pictures.

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Additional information
  • Havainto
    • Pearl clouds
  • Nacreous clouds
    • Pearlescent sunset info

      Pearlescent brown is a brownish sunset associated with pearl clouds that appears at dusk in the morning and evening when the Sun is below the horizon.

      It is usually remarkably powerful and makes the landscape bathe in red or purple light. Most often, some degree of pearlescent is observed in the context of pearl clouds. Pearl brown can also be the dominant element in which the actual pearl clouds stand out poorly if at all.

      The pearl clouds themselves are reported in the Sky Watch in the categories of colorless light (type I) and spectral color (type II) clouds.

      Parel clouds are often also associated with the Bishop ring. The Bishop’s ring may be a clear sign of pearls when the Sun is on the horizon. In addition, pearlescent cloud fibers are visible, which, however, are often very inconspicuous when the Sun is on the horizon.

      The Pearl Bishop gradually turns into a pearl brown in the evening as the sun continues to sink below the horizon. In the morning the opposite. However, the Bishop ring is not always visible, even if pearl clouds are observed in the morning or evening. In this case, the pearlescent brown would also appear to be weak or non-existent.

      Sunset colors with pearl clouds Eetu Saarti.

      Close up of mother of pearl brown. It also shows type I pale pearl clouds. Photo by Mika Aho.

      Pearlescent sunset by Veikko Mäkelä. 

Comments: 1 pcs
Timo Nevala - 31.1.2023 at 00.22 Report this

Kyllä kuvissa on selvä helmiäisrusko. Helmiäispilviäkin erottuu taivaalla, mutta hyvin himmeinä. (Siis ne vaaleat. Se tumma pilvi horisontissa ei ole helmiäinen.)

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