Lunar X

Posted on 22nd February 2018 by Derekscope

Lunar XLunar X - close up
Thursday 22nd February 2018 – all night
See the Lunar X is a effect in which light and shadow creates the appearance of a letter ‘X’ on the rim of the Blanchinus, La Caille and Purbach craters.
(The X is visible only for a few hours before the first quarter, slightly below the lunar terminator.)

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