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Telescope: Takahashi
Mount: Paramount MEII
Camera: Nikon D90
Staking 13 image with autostaker, edit with photoshop Ps6
The Lunar X is the appearance of a letter 'X' on the rim of the Blanchinus, La Caille and Purbach craters. Letter X just appear in a few hours before the first quarter. Below to the X, the Lunar V is also appear, formed by Ukert crater and several other small craters.