216 Brass Telescope Stock Photos, High-Res Pictures, and Images - Getty Images

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Reflecting telescope made by the London instrument maker Jesse Ramsden with a 6 inch speculum mirror. This telescope uses the Cassegrain optical configuration. It is mounted on an improved version of James Short�s so-called �universal�; a portable equatorial stand with a brass fork holding the tube and an adjustable polar axis. As it is used on a table or similar surface, the portable telescope has three levelling screws and a pair of sprit levels. Such a lavish instrument would only have been affordable to wealthy amateurs. Ramsden worked for various well-known instrument makers such as Sisson, Adams and Dollond, before starting on his own business in 1762. He went on to become the foremost instrument maker of his day. Get premium, high resolution news photos at getty