- Telescopes focus the light and make distant objects appear bigger, way better to see and they seem more hd. This type of telescopes is called a refracting telescopes. Most refracting telescopes use two main lenses. The largest lens is called the objective lens and the smaller lens used for viewing is called the eyepiece lens. A lot of telescopes use a eye piece is where you put your eye then it gose to the lance which bounces off back to your eye to make it bigger and brighter.