TEXT HERE DOES NOT MATCH WITH PICTURES. NEW TEXT IS UNDER CONSTRUCTION. (This old version is temporarily preserved for own use to help in writing new captions.)
HERE ARE (VERY) OLD SLIDE SCANS. SLIDES WILL BE RE-SCANNED, IMAGES ENLARGED AND NEW SLIDES SCANNED IN FUTURE.
Halos are born when light is refracted or reflected in icecrystals of different shapes. There is no way to make a halo guide here because of the richness of possible forms. Just be observant wherever you are and check your day and night sky whenever there are cirrus-type clouds passing by.
ha02611
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ha02713
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ha02722
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ha02724
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ha02734
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ha02743
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ha02741
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ha02911
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ha02921
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ha02932
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ha03122
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ha03141
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ha03222
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ha03343
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ha03421
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ha03452
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ha03521
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ha03524
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ha03544
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ha03554
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ha03623
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ha03632
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