Hello all,
Wide shot of Walther and other craters at dawn on 10 October 2024. This region is lined with large, rugged and complex graters. In particular Regiomontanus, named for Johannes von Konigsberg (1436-1476) who paved the way for Copernican heliocentrism. This crater is ruined and encroached by Purbach crater.
Walther (after German astronomer Bernard Walther (1430-1504)) shows two (at least) interesting features: first is the crater, Walther E, nestled up against the western wall. This crater, measuring 12km is double ridged, like a miniature version of the famous and obvious "Train Tracks" seen on the wall of
Petavius.
The second point of interest is the wall abutting Regiomontanus is covered in small craterlets, betraying the age of this crater and the erosion over the eons.
Delaunay, named for the French astronomer Charles-Eugene Delaunay (1816-1872) shows a sharp curving ridge splitting it into two sections under morning light, displaying one of the thinnest ridges observable in a crater.
Also note the white specks in the centre of the dark depths of Alphonsus and Arzachel - the central peaks rising from the murk!
ZWO 178mm camera, Celestron 14"Edge HD. 2,000 frames stacked in Autostakkert!3 and sharpened in Registax.
Richard
