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In the first picture our observation place is situated at the eastern edge of
the lunar umbra. Up to a distance of about 90 km to the west from us there is dark
(totality) and therefore the sky in the west is dark, too. On the opposite side, in the
east, the sky remains to be very light as just a few kilometres to the east from
us the Sun is still shining. The illumination of the landscape in the picture
is very soft because it is lit mostly from the east and we are looking in the
direction of the source of illumination.
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In the second picture our observation place is situated at the western edge of
the lunar umbra. Not far away from us, to the west, the Sun is already shining
and the sky in that direction is very bright. On the other hand, up to a
distance of about 90 km to the east from us there is dark and the sky in the
east is also dark. The contrasted illumination of the landscape in the picture
is caused by the fact that the landscape is lit mostly from the west and we
are looking against the direction of the source of illumination.
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