Modern observatories - PowerPoint PPT Presentation

From Stonehenge to Keck: Architecture and Astronomy

From Stonehenge to Keck: Architecture and Astronomy. C. G. De Pree RARE CATS Green Bank, WV June 2002. Questions. Why have societies observed the heavens since ancient times? What sort of structures have been associated with observing the sky? How have these structures changed with time?.

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Light, Optics and Telescopes

Light, Optics and Telescopes . The Electromagnetic Spectrum. Photons of different energies radiate at different wavelengths or frequencies. wavelength x frequency = velocity of light ( c) . l n = c . c = 5 x 10 5 km/s . c = 186,000 miles/s .

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