Captured shortly after my recent Aristarchus post. Same gear (C9.25) and settings including exposure. Once again South is up, West (on the Moon!) is right.
Due to the current libration, walled plain Gassendi (110 km) is foreshortened but this nicely shows off the central mountains, which rise to ~1.2 km. Gassendi A (33 km) which sits on the larger crater's Northern rim, is one of the "younger" impacts.
The other large crater in the image is Mersenius (84 km) is partly in shadow. Its flooded floor is crossed by a line of craterlets, and a rille is visible.
There are two prominent valley systems lying between the large craters, Rupes Liebig, a fault that runs along the edge of the basalt plain Mare Humorum for 180 km, and the prominent rille system Rimae Mersenius, which extends for 230 km.
Seeing quickly deteriorated after this image so packed up.
Click on thumbnail for detail.