Arzachel, Alphonsus and Ptolemaeus

This mosaic was assembled from two images, unsharp mask applied and edges cropped in Photoshop CS2. The two original images were captures with  a ToUcam 840 through my C8 SGT XLT with a 2x barlow. Resolution is approximately 500m per pixel.

Arzachel (left) is 100km diameter. Crater walls are 1000m high and steep. The central peak is 1500m high. Rimae Arzachel is visible in the crater floor.

Alphonsus (centre) is 121 kms diameter, with steep tormented crater slopes. Rimae Alphonsus is visible in the floor of the crater.

Ptolemaeus (right) is 158 kms diameter, with high walls. The large flat floor of the crater contains Ammonius and several ghost craters.

Alpetragius (lower left) is a 41km diameter crater whose core is shrouded in shadow in this image. The peak of the central mountain is just visible in this image.