Keywords: Great Ex Telescope EyePiece.jpg fr Porte - oculaire de la lunette astronomique ; exposition universelle de 1900 en Great Paris Exhibition Telescope of 1900 eye-piece holder 1900 L'encyclopédie du siècle Paris 1900 41-78 author PD-old-70 Original upload log en wikipedia Great+Ex+Telescope+Complete jpg 2008-05-06 20 41 Ron B Thomson 684×484 314 ko <nowiki> Great Paris Exhibition Telescope of 1900 eye-piece holder From L'encyclopédie du siècle Paris 1900 41-78</nowiki> Uploaded with UploadWizard Objects displayed at the Exposition Universelle 1900 Great Ex Telescope Palais de l'Optique |