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Explorations An Introduction to Astronomy, 3/e
Thomas T. Arny

Telescopes


Telescopes 119
4.1Telescopes 120
Collecting Power 120
Focusing the Light 120
Extending Our Reach: Refraction 121
Resolving Power 127
4.2Interferometers 128
4.3Observatories 130
4.4Detecting the Light 131
4.5Observing at Nonvisible Wavelengths 131
Extending Our Reach: Exploring New Wavelengths: Gamma Rays 134
Extending Our Reach: Observing the Crab Nebula at Many Wavelengths 134
4.6Observatories in Space 136
Atmospheric Blurring 137
Space Observatories versus Ground-Based Observatories 138
4.7Going Observing 140
4.8Computers 141
4.9Astronomers 142
Projects 144