High magnification makes even tiny vibrations look like an earthquake. A sturdy mount, such as a Dobsonian or an Alt-Azimuth (AZ) with slow-motion controls, is crucial for keeping the planet in your field of view. Top Beginner Recommendations for 2026

However, not every telescope is built for planetary detail. If your goal is to explore our celestial neighbors, here is what you need to know before you buy. What Makes a "Planet Killer" Telescope?

This is the diameter of the main lens or mirror. For planets, a minimum of 100mm (4 inches) is recommended to resolve sharp details.