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.)
THESE ARE (VERY) OLD SLIDE SCANS. SLIDES WILL BE RE-SCANNED, IMAGES ENLARGED AND NEW SLIDES SCANNED IN FUTURE.
Very often the phenomenon is visible only in a small area of sky. And often it can be noticed only among ordinary clouds like those in he04934-he05113. Image he04242 is taken in moonlight.
he03253
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he03254
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he03312
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he03343
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he03411
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he03414
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he03423
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he03513
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he03532
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he03552
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he03621
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he03713
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he03733
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he03743
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he03933
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he03941
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he04242
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he04321
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he04354
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he04541
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he04634
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he04714
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he04813
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he04854
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he04934
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he04943
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he05024
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he05054
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he05113
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he05131
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he05154
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he05241
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he05321
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he05324
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he05454
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he05514
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