Image brightness, magnification, and why the old ideal of a 7-millimeter exit pupil is not so ideal at all.
Astronomy can be daunting for beginners — after all there’s a whole universe out there! But stargazing basics don’t have to be hard. Sky & Telescope editors (with more than 100 years of collective experience) are here to help you learn your way around the night sky. Whether you’re looking for your first telescope, trying to learn the constellations, or want to learn to use star charts, you’ve come to the right place. The best way to start exploring the night sky is with the unaided eye. Our star wheels are easy to use, and in no time you’ll learn the constellations and names of the stars. And that’s only the beginning!