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Astronomy Principles and Practice Fourth Edition.pdf

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Comparison of refractors <strong>and</strong> reflectors 265<br />

Figure 16.29. The William Herschel Telescope (WHT)—4·2 m. This telescope is driven on an alt-azimuth<br />

mounting. (Photograph by courtesy of the ING of Telescopes, La Palma.)<br />

Figure 16.30. The Gemini (North) Telescope (8·2 m) prior to its commissioning. (Photograph by courtesy of<br />

NOAO/AURA/NSF.)

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