Within the confines of the Solar System, the ED80 is sufficiently powerful to see the phases of Mercury and Venus, as well as the detailed features of the Moon, such as craters, ridges, and mountains. You can also see Mars’ ice caps and a few dark markings on its surface, which change in size and appearance over time, and the resolve the Great Red Spot, cloud belts, and moons of Jupiter. Saturn’s rings, the Cassini Division within them, and a few moons can be spotted, along with Saturn’s own cloud belts, though they are less prominent or vivid than those of Jupiter. A larger telescope is necessary to resolve Uranus and Neptune clearly from star-like points or observe their moons.