Six and a half inch glass mirror in original brass cell

Made:: 1780-1820 in England

maker:: William Herschel

Six and a half inch glass mirror in original brass cell, with close fitting tin cap with handle cell 1 1/16" deep outside, exact focal length 7ft 1.75 in, "D" painted on cell and lid

Details

Category:: Astronomy

Object Number:: 1925-463

Materials:: glass, brass and tin

type:: components, concave mirrors, glass mirrors and astronomical instruments

credit:: Mr John Herschel-Shorland

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Six and a half inch glass mirror in original brass cell

Details

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