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Caption: Sir WIlliam Herschel's telescope or the Great Forty-Foot reflecting telescope built between 1785 and 1789 at Observatory House in Slough, England. Copperplate engraving by Wilson Lowry after a drawing by J. Farey from Abraham Rees' Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, Longman, Hurst, Rees, Orme and Brown, London, 1820.
Credit: Album / Florilegius
Image size: 4822 × 6200 px | 85.5 MB
Print size: 40.8 × 52.5 cm | 1898.4 × 2440.9 in (300 dpi)