Hyginus Rille

Combination of 20, 0.02 second exposures.
SBIG ST8XE CCD. 20" f/6.8 Dall-Kirkham cassegrain telescope at prime focus.

Hyginus Rille is located on the southern edge of Mare Vaporum near the centre of the Moon as seen from Earth. It is one of the easier rilles to observe, especially just before first quarter. The crater Hyginus is located on the rille, close to where it takes a sharp bend, while to the north (below) is a darker region of rough terrain that I always find facinating in the telescope. The two large craters to the left are Agrippa (larger) and Godin.