The Mare Crisium basin, during the Waxing Crescent Moon

 Back on Sunday, November 7, 2021, the Moon was in its Waxing Crescent Phase. After taking a photograph of the Moon and the Planet Venus together, I captured a few photographs of just the Moon, to show more detail in its surface. The most prominent feature that is seen in the photograph is the Mare Crisium, a basin on the Moon's surface.

Mare Crisium during the Waxing Crescent Moon

The Waxing Crescent Moon with 13.5% illumination
The Mare Crisium is seen along the dark and light edge of the illuminated surface.

At the time I took the photograph, around 6 PM EST, the Moon's illumination was 13.5%. With this level of illumination, the Mare Crisium had just become fully visible on the Moon's surface. According to NASA, the Mare Crisium is about 3.9 billion years old, and is 740 km (460 miles) wide. While the Mare Crisium looks to be rather flat in the photograph, NASA states that it is about 1.8 km (1.1 miles) below the Moon's lunar datum (the Moon's sea level). It also reaches to a height of 3.34 km (2.1 miles) above the lunar datum. 

Photograph taken on November 7, 2021, from Syracuse, New York.


  1. Beautiful capture and really interesting info! I guess I have been too lazy to research what I am looking at.

    1. Thanks, Shelly. I kept thinking that the Moon looked like the Death Star, which made me curious as to what the large circular object was.


Post a Comment

All comments are now reviewed before publishing on this blog. Comments may not appear on the blog for a day or two.

All images/photographs are copyrighted © by Tom Gatermann. All rights reserved. Contact me. Subscribe.

Popular Posts

A tour of Union Pacific's De Soto carshop

Amtrak trains on the Syracuse Terminal Subdivision

The "Green Bridge" over CP282 and the east side of DeWitt Yard

Boeing 737 fuselages on a BNSF train in the West Bottoms of KC.

Waiting at CP-320 for CSXT 1973 "Chessie System" at Savannah, NY.