Erin -
That's a very interesting question. During the eclipse, the corona is still
rather bright. The earth reflects about 30% (called its albedo) and then the
moon probably reflects about 30% as well. So one might expect that 10%
of the light to reflect back, except that the light would be spread over the
entire lunar surface. That would make it difficult to see with the corona so
much brighter.
- Peter