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Title: Speculum Metal Mirror, 1860 [Go to resource]
Description: Speculum metal mirror, one of four, a concave circular-shaped secondary mirror for use at the Gregorian focus of the telescope, 1860. Mirror mounted on brass circular plate with threaded circular boss in centre. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: mirror
astronomical instrument
metal mirror
componentTemporal: 1860 Source: Science Museum Creator: Nasmyth, James Identifier: 1897-15/4 Go to resource More Like this...
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