{
Practical astronomy
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Astronomy
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The Moon
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The physical Moon
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The Lunar 100
}
Lunar #85: Langrenus rays
Langrenus is one of the four large craters that appear a few days after New Moon in the southern half of the sunlit crescent. Langrenus is farthest north, followed by Vendelinus, Petavius and Furnerius. Langrenus has terraced walls and two central peaks. It borders on Mare Fecunditatis to its West, and a few rays project from the crater into the mare.
Image:
- The area on 2022-10-12, stacked from 842 video frames taken with a Schmidt-Cassegrain reflector of D = 200 mm and f = 3500 mm and Canon EOS 600Dα camera. Wavelet sharpening. The phase was, unusally, −94%, meaning that lunar night is approaching from the right and the last sunlight is coming from the left.