This edition: Astronomical Tools
Footage from premier observatories around the world and interviews with the astronomers who use these facilities are highlighted in this lesson on the electromagnetic spectrum and the instruments used to collect and analyze it. From Galileo’s small, simple telescope to the Hubble Space Telescope, the development and purpose of both optical and radio telescopes are introduced. Modern advances in optical systems, such as active and adaptive optics and charge-coupled devices, are also presented in an easy-to-comprehend and engaging presentation. Dr. Roger Angel of University of Arizona Mirror Lab, Dr. Frank Drake of the Center for the Study of Life in the Universe, and Dr. Jill Tarter of the SETI Institute are just a few of the onscreen experts who guide this lesson.