Penumbral Moon (October 19, 2013)
This was taken close to the fullest part of a so-called "penumbral eclipse" (at about 7:59 PM EST), which occurs when the moon is shadowed by the Earth's penumbra. This faintly shaded the moon over about 75% of its visible side. The faint shading begins at Moon's lower (right) edge and ends just short of the upper (left) edge.
Because I used a shorter focal-length lens (200 mm) for this, the moon appears smaller here compared to other images on this page (shot with 283 mm).