Do you like to lie on your back and gaze at the stars? What constellations can you name? Have you ever used a telescope to get a closer look at the universe? Do you know how a telescope works?
A telescope is used to see distant objects up close. There are two basic types of telescopes - the refracting telescope and the reflecting telescope. Each will help you to see the planets, moon, or stars. Both use a tube and have an eyepiece to focus the image for you to see. However, each works in a different way.
A refracting telescope uses glass lenses to help you see objects in space. An objective lens collects light from the object you want to view. An eyepiece lens works as a magnifying glass to enhance and enlarge the image received by the telescope. As you look through the eyepiece, the picture is viewed. The tube of a refracting telescope is long and thin. In order to increase magnification, the tube must be lengthened.