Astronomy: a large refracting telescope, in use outdoors. Lithograph by W. Eldridge, 183-.

Date:
1831
Reference:
46259i
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Description

"On his father's death in 1830 Cooper succeeded to his position as manager of the family estates at Markree, Collooney, co. Sligo, Ireland, and decided to erect an observatory there. He visited Cauchoix in Paris in 1829 and by 1831 was able to purchase from him an object-glass 13⅓ inches across and 25 feet in focal length, the largest then in existence. Used at first on a wooden stand, it was mounted equatorially by Thomas Grubb of Dublin in 1834. Cast iron was employed for the first time as the material of the tube and stand. A dome of the requisite size was considered then not to be feasible, and the instrument was set up in the open air."--Oxford dictionary of national biography

Publication/Creation

1831

Physical description

1 print : lithograph ; image 10.5 x 12.1 cm

Related material

Select images of this work were taken by the Wellcome Historical Medical Museum: WT/D/1/20/1/82/92

Lettering

Temporary mounting of an achromatic refracting telescope, the property of E.J. Cooper Esq.r., M.P. ... object glass by M. Cauchoix of Paris; mounting & adjustments by Mr Tulley, on the premises of Mr Comfield, Clapham, Sept.r 23.d 1831. W. Eldridge lith.g

Reference

Wellcome Collection 46259i

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