This event is called an occultation. Only Europa showed an east to west apparent motion, and in fact it passed in front of the Jovian disk shortly after the end of the session. During that event, called transit, it projected its shadow onto the Jovian disk. A high quality instrument with larger aperture will surely reveal much more details than those described above, but only when properly collimated and, most importantly, when atmospheric seeing is favorable. The determination of its drift rate with respect to other Jovian cloud features is one of the important contributions of amateur observation programs.
Much less detail is visible toward the poles, namely the banded zone-belt pattern fond elsewhere.
A considerable limb darkening difficults the observation of nearby features. At opposition, limb darkening is equivalent in both following and preceding sides. Before opposition the preceding limb is darker, the contrary being observed after opposition. A well defined nomenclature is applied to identify the various regions, zones, belts and other specific cloud features present on Jupiter. In the above figure, labeled schemes presented on the left are to be compared to the actual images of Jupiter shown on the right.