At
the very top of the image are two craters that appear to be connected. The
top crater, only half in the picture, is Cyrillus (98 km in diameter). The
lower one is Catharina, a "damaged" ring mountain 100 km in diameter and
3130 meters deep.
An early image taken through the Ritchie telescope.
At
the very top of the image are two craters that appear to be connected. The
top crater, only half in the picture, is Cyrillus (98 km in diameter). The
lower one is Catharina, a "damaged" ring mountain 100 km in diameter and
3130 meters deep.
The dark flat area in the upper right is a portion of Mare Nectaris. The indentation at the bottom of the Mare is the crater Fracastorius which is missing its north wall with the floor continuing into the Mare.
The Altai fault runs from just to the left of Catharina down to the right appearing to end at the crater Piccolomini (which has a large central mountain).
Running across the Altai Fault, from lower left to upper right, and across the surface of Mare Nectaris is a light colored ray from the crater Tycho. Tycho has the most extensive ray system of any crater on the moon, and in fact it not only is outside of this photo, but it is about halfway across the face of the moon from Mare Nectaris!
Near the center bottom of the photo is a group of craters including (from lower to upper) Hageclus, Nearch, Rosenberger, Vlacq, Hommel (the largest one with a small white illuminated hill in the middle), and Pittcus. These craters are all about 80 to 100 km in diameter.
BPAA Astronomy Photos:
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