University of Edinburgh

BSL Physics Glossary - refracting telescope - definition

This type of telescope has an eyepiece lens, near the user. It also has an objective lens at the other end of the tube, which can be moved in and out. This allows the user to change the magnification and focus. A refracting telescope can be used for many different purposes. You can use one to look at stars in space. Or you can use it like a telephoto lens. It's useful for observing wildlife from far off. The telescope magnifies: it makes the image larger.