Français : Une gravure montrant la grande lunette astronomique à l'exposition universelle Paris 900 par une vue d'ensemble (en haut), le tube sidérostat (à gauche) et l'objectif (à droite), et la fin de la lentille oculaire (encadré)
English: An engraving of the great telescope of the 1900 Paris Exposition universelle, showing an overall view (top); the siderostat (left) and lens tube (right); and the ocular lens end (inse
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2008-05-07 18:28 Ron B. Thomson 694×496 (356kio) An engraving of the great telescope of the 1900 Paris Exposition universelle, showing an overall view (top); the siderostat (left) and lens tube (right); and the ocular lens end (inset). From ''La nature'', 11 February 1899, pp. 167-170.
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Engraving of the great telescope of the 1900 Paris Exposition