My Aussie astronomy buddy, John McRae, loves sharing his view of the sky on Periscope, and I love watching. John broadcasts live many times a week, and I think the Moon may be one of his favorite targets.
This morning John shared his view of his favorite lunar crater, Clavius. Located in the lunar southern hemisphere, this 225 km wide impact crater has a lot of character.
There are two large craters situated on the rim. Porter to the north and Rutherford to the south. Russell W. Porter was an American architect of the early 20th century, and Lewis M. Rutherford was a 19th century American photographer. These craters are 52 km and about 50 km respectively.
Inside Clavius we find a nice “arcuate row” of four craters, labeled D, C, N, and J, reading from largest to smallest, or west to east.
Clavius is named for the German mathematician Christoph Clavius. This is a very large crater with a tall mountainous ring around it.
In the movie 2001: A Space Odyssey, the American base at Clavius was put under quarantine in an effort to control the news of a discovery nearby.
View of the Moon by John McRae
images by Dennis Hands
Information from Atlas of the Moon by Antonin Ruki