A vertical black line is visible in the upper third of this frame, in the middle of a flooded crater. Also known as Rupes Recta, the right wall becomes visible even in a small telescope a day after the lunar first quarter phase. Although this feature sits on a fault, on the lunar surface it is a barely perceptible slope, and the Sun's low angles help the shadows accentuate the subtle topography.

This video was captured using an iPhone 11Pro through the eyepiece of a 20cm diameter Newtonian telescope. Since this instrument was not tracking the sky, the apparent movement of the Moon from left to right is actually due to the rotation of the Earth. Wind gusts are responsible for the telescope bouncing.

Image from northern Vulcan County, June 7, 2022.

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