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WILLIAM HERSCHEL (1738-1822) Anglo-German astronomer. His 40ft (12 m) telescope at his Observatory House near Slough, England, built 1785-1789 Stock Photo - Alamy
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William Herschel 40 Foot Telescope, 1880s Poster Print by Science Source (24 x 36) : Amazon.co.uk: Home & Kitchen
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