<p>Astronomy Power-Point Notes: Optical Telescopes</p><p>1. What part of the electromagnetic spectrum is utilized by optical telescopes?</p><p>2. Name the two basic types of optical telescopes.</p><p>3. What is another name for refracting telescopes?</p><p>4. What type of lens is used in a refracting telescope?</p><p>5. List several advantages for using the refracting telescope.</p><p>6. List several disadvantages to using a refracting telescope.</p><p>7. Draw and label a diagram of a refracting telescope.</p><p>8. How is a reflecting telescope different from a refracting telescope?</p><p>9. What is the prime focus?</p><p>10. What type of mirror is used in reflecting telescopes?</p><p>11. Why is it important to use this type of mirror? 12. Draw and label a diagram of a reflecting telescope. 13. What is another name for a Newtonian telescope?</p><p>14. How is the Newtonian different from a simple reflecting telescope?</p><p>15. List some advantages of a Newtonian telescope.</p><p>16. List some disadvantages of a Newtonian telescope.</p><p>17. What is a Dobsonian telescope?</p><p>18. List two types of cassegrain telescopes.</p><p>19. What are some advantages to using a Cassegrain telescope?</p><p>20.What are some disadvantages to using the Cassegrain telescope?</p><p>21. What can you see with a telescope?</p>