Apollo 11 Under Different conditions Howdy, this might be an odd question, but I'm using whatever information I gather here to help write an alternate universe version of the 1950s through 1980s. Due to some convoluted plot contrivance involving several delays to the moon landing, the very last pass behind the moon the Apollo crew takes place during a lunar eclipse. Now, I unfortunately don't have access to any simulation software, so I'm not sure what that would look like to them! How much of the lunar surface would the crew be able to see in passes that occur beforehand, and what does the phenomenon look like from space? Do we know what it might look like?
Time is not of the essence, but I still need to know these details before writing this particular section of the story.
Lunar eclipses occur when the moon is full.  When the moon is full, the far side of the moon is unlit. With neither the Sun nor the Earth in the sky, the only ambient light would come from stars, and this is not bright enough to see anything by.  The moon would look completely black. The fact that a lunar eclipse is happening is largely irrelevant. The far side would be unlit during any full moon.

The near side of the moon would be lit by light refracted around the Earth. This would be bright enough to see the moon surface. It may be bright enough to read by. The exact brightness would depend on lots of unpredictable factors such as the amount of volcanic dust in the stratosphere. It would certainly be red just like we can see the moon during a lunar eclipse, so would the astronauts orbiting it.

In previous passes the Earth would at most partially cover the moon and the nearside surface would be well lit. The far side would be unlit and dark.

In fact the landing happened when the moon was just less than half full and so much of the far side would have been well lit.