The image produced by the first refracting telescope was Name right side up. However, the clarity of the image was less than ideal. Johannes Kepler worked to improve the image produced by the refracting telescope. He used two convex The Telescope lenses, which turned the image upside down but improved the clarity dramatically. His design soon became popular By Phyllis Naegeli and remains in use today.

Do you like to lie on your back and gaze One problem associated with the refracting telescope was at the stars? What constellations can you the rainbow halo it produced around the object in view. Sir name? Have you ever used a telescope to Isaac Newton did not care for the halo produced by the get a closer look at the universe? Do you refracting telescope. He set out to improve the design, know how a telescope works? which led him to work on the reflecting telescope. The design used a curved mirror to collect light from an object. A telescope is used to see distant objects A secondary flat mirror reflected the image to the side of up close. There are two basic types of the tube where it is viewed through an eyepiece. Newton telescopes - the refracting telescope and also used a shorter, fatter tube allowing magnification to be the reflecting telescope. Each will help increased by using larger mirrors. Newton's design you to see the planets, moon, or stars. Both eliminated the rainbow halo produced by the convex lenses use a tube and have an eyepiece to focus the image for you of the refracting telescope. Today, the halo is eliminated by to see. However, each works in a different way. coating the lenses.

A refracting telescope uses glass lenses to help you see A famous reflecting telescope is the Hubble Space objects in space. An objective lens collects light from the Telescope. It orbits the earth on a satellite, allowing it to object you want to view. An eyepiece lens works as a view objects in space without distortion from the earth's magnifying glass to enhance and enlarge the image atmosphere. The mirror used on the Hubble is eight feet in received by the telescope. As you look through the diameter, giving it the ability to see planets, stars, and eyepiece, the picture is viewed. The tube of a refracting galaxies that have never been viewed before. Now when a telescope is long and thin. In order to increase new discovery is made, Hubble's amazing capabilities give magnification, the tube must be lengthened. us a close up of the object. Hubble's price tag of two billion dollars has given us a priceless view of the universe we live The first refracting telescope used one convex and one in. concave lens. Galileo used this type of telescope in his work in astronomy in the early 1600s. With it, he Telescopes are amazing tools to use to watch the night sky. discovered four of Jupiter's moons. He was also able to see From the amateur to the scientist, this important invention the moon up close for the first time. Although it was helps us see far more than we can with the naked eye. Who believed the moon was smooth, Galileo discovered its knows what we will discover next! many craters, mountains, and valleys. 5. Who worked to improve the telescope because he did Name not like the halo that appeared around the image? A. Johannes Kepler B. Galileo The Telescope C. Sir Isaac Newton D. none of the above Questions 6. How much did the Hubble telescope cost? 1. A refracting telescope shows an image right side up. A. two billion dollars A. true B. two hundred billion dollars B. false C. two thousand dollars D. two hundred million dollars 2. What did Johannes Kepler do to improve the clarity of the image seen with the refracting telescope? 7. Which mirror in a reflecting telescope collects light from the object to be viewed? A. He lengthened the tube. B. He used two convex lenses. C. He used two concave lenses. D. He coated the lenses. 3. Which of the following is not a part of a telescope? A. tube B. mirror 8. Today, refracting telescopes use a special coating on C. prism the lenses to eliminate the rainbow halo. D. lens A. true 4. How is the magnification on a reflecting telescope B. false increased? A. by decreasing the size of the lens If you could spend a day in space, what do you think you would see? B. by lengthening the tube Where would you go? C. by increasing the size of the mirror D. by using two concave lenses Name