Around full moon this young crater (below centre) becomes one of the most prominent spots on the lunar disc. Although its ray system can be traced up to 90 miles, most of its luminosity is localised within the 12 mile crater itself and a small circular zone of ejecta around it.

Photo: António Cidadão. His Home Page of Astrophotography includes stereograms, animations, and "Seven Craters a Week" from his forthcoming photographic lunar atlas.

Inconstant Moon