Plato . . . Plato Shadows in Plato The 101 km walled plain Plato sits at the northern boundary of Mare Imbrium and the southern edge of Mare Frigoris. Note the triangular section of wall on the western side that has broken away and slid down into the crater interior.
North is up.
25cm Newtonian, video capture image . . . I spent some time viewing the waning Moon with a 25cm Newtonian and though seeing conditions were very transparent, sadly, they were also extremely turbulent. Never the less, among other choice features that I spent some time examining, I looked closely at the shadows on the floor of Plato cast by its eastern wall. The sun was still relatively high so the shadows were not as long as I had hoped to catch this lunation, but one shadow north of the triangular section of wall that has slumped towards the crater floor was very prominent. Often it is difficult to identify which section of wall is actually casting the longer shadows, but in this case the higher elevation was brighter than the wall sections on either side and easy to identify.