Several different phenomena like Earth’s shaddow on atmoshere, crepscular and anti-crepscular rays, polarization of the sky and twillight phenomena. (Miscellaneous optical phenomena seen in the sky.) Polarization pairs show same scene both without pol-filter (upper or left image) and with pol-filter with max effect.
 mv00151
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 mv00321
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 mv00454
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 mv00523
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 mv00531
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 mv00614
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 mv00631
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 mv00653
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 mv00723
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 mv00741
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 mv00751
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 cr00112
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 cr00123
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 cr00143
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 cr00222
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 cr00341
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 cr00344
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 cr00542
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 cr00552
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 cr00622
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 ta005aa
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 ta020bb
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 ta021cc
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 ta021dd
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 ta021ee
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 ta022ff
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 ta022gg
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 ta022hh
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 ta022ii
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 ta023jj
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 ta024kk
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 ta00723
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 ta00731
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 ta01641
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 ta01913
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 ta01923
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 ta01941
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