All posts in Planet Watching

Five planets — Mercury, Venus, Mars, Jupiter, and Saturn — are visible to the naked eye without any equipment at all, and have been observed since antiquity long before telescopes existed. Knowing when and where to look, and how to tell a planet from an…

Saturn’s rings are one of the most requested sights in amateur astronomy, and one of the most satisfying to actually deliver on — but they need a real telescope, not binoculars, and a bit of understanding about magnification and timing to see well. Why Binoculars…

Jupiter’s four largest moons — Io, Europa, Ganymede, and Callisto — are bright enough to see in ordinary binoculars, and watching their positions change from night to night is one of the most accessible, genuinely dynamic sights in amateur astronomy. The Galilean Moons Named for…

Planetary viewing has different priorities than deep-sky observing. Where galaxies and nebulae reward raw light-gathering aperture above all else, planets are bright enough that focal length, optical sharpness, and a steady tracking mount matter just as much, if not more. Focal Length and Focal Ratio…