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Optical Effects
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22-degree halo spotted near Devils Tower National Monument, Wyoming, US
A vivid 22-degree halo spotted around mid-day over Singapore
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22-degree halo over Harlow Common, Essex, England
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22-degree halo over Northern California, US
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22-degre halo over Exeter, Devon, England
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22-degree halo over Cajeme, Sonora, Mexico
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22-degree halo over Solana Beach, California, US
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22-degree halo spotted from the Everett Marina, over Everett, Washington, US
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22-degree lunar halo over Port Melbourne, Victoria, Australia
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A classic example of a 22-degree halo over Northern California, US
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A reflection of a 22-degree halo over Isle of Lewis, Scotland
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22-degree halo spotted over Abruzzo National Park, Barrea, Italy
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22-degree halo over Malakwa, British Columbia, Canada
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22-degree halo over Cotia, São Paulo, Brazil
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A unique perspective of a 22-degree halo, with a bee-fly visiting a poppy in the foreground, near Selma, Oregon, US
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22-degree halo is seen as the sunlight is refracted through the ice crystals of thin layers of high clouds, such as cirrostratus in this case. Note how it 'ceases to exist' where there are no thin layers of clouds present. This example was spotted over Lake Stevens, Washington, US.
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