If you want to see its clear blue tint, you'll need at least a 6-8-inch aperture. Our pick Celestron NexStar 8SE: at Amazon If your budget allows, our top pick is the Celestron NexStar 8SE. For any meaningful detail in the rings, or to be able to see Neptune at all, you’ll need a telescope. You’ll likely need binoculars to see the slim 7% crescent moon — a 10x42 pair should do the job nicely. Best seen with:Binoculars: In order to see Jupiter's moons, you'll need a minimum of 15x magnification, and they'll need to be tripod-mounted.