Total Lunar Eclipse

If we were on the moon during a lunar eclipse, the Earth would be backlit, and everywhere along its edge is at either sunset or at sunrise. The sky there is familiar to us: red and orange, the colors refracted slightly around the Earth's edge by the air. It is this reddish-orange light source that illuminates the moon when the sun no longer hits it directly.

This picture was taken during the midpoint of the eclipse when the moon was deepest in shadow. The visual appearance was a dim grayish brown, but a long enough exposure on film will show the red component to its color.

The "bottom" of the moon is brighter. This means that the moon didn't pass through the dead center of the Earth's shadow, but toward one side. This view is similar to the visual experience. At full totality however, the moon seemed to be a grayish brown color. The deep red in the photo is not artificial; the film just sees it better than we do