Combination of 2000, 0.002 second exposures.
DMK video CCD. 20" f/6.8 Dall-Kirkham cassegrain telescope at prime focus.
Named after a 17th century Belgian mathematican, Morteus is a very distinctive crater in the southern highlands of the Moon, a little south and east of Clavius.This crater is about 110 km across and has a very promient central peak.