The most 3-D experience that I have had with the moon, on the cheap, is when its not in it's full phase. With a cheap telescope, when you observe the edge of th

The most 3-D experience that I have had with the moon, on the cheap, is when its not in it's full phase. With a cheap telescope, when you observe the edge of the partial-phase moon's crescent, you see the "terminator." It suddenly feels so different, finally you see the moon's bumpy spherical nature. It's like you are flying just above it. > The terminator is where you'll see the most pronounced shadows cast by the lunar features like craters, mountains, and valleys. This is because the Sun is at a low angle relative to the lunar surface, emphasizing the topography and allowing you to see craters and other features in sharp relief