Keys to the Universe

Keys to the Universe brings together a curated selection of Explore Scientific telescopes and waterproof eyepieces that unlock the wonders of the night sky. From AR Series refractors and ED APO triplets to our renowned 68° and 82° Series wide-field eyepieces, this collection highlights the equipment that delivers memorable views of the Moon, planets, nebulae and galaxies.

A great observing experience comes from pairing quality optics with the right eyepieces. Refractors provide sharp, high-contrast views with minimal maintenance, while wide-field eyepieces frame star clusters and nebulae with immersive context. Explore Scientific eyepieces feature waterproof, gas-purged construction and multi-coated optics to deliver bright, crisp images night after night.

Whether you are assembling your first complete telescope setup or adding premium eyepieces to an existing kit, this collection makes it easy to find proven, well-matched equipment. Consider pairing a low-power wide-field eyepiece for sweeping views with a higher-power eyepiece for planetary detail, and add a quality star diagonal for comfortable viewing. These are truly the keys to exploring the universe.