Telescopes, Astronomical and navigational instruments, Optical equipment

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Portable transit telescope

AST0986
Telescopes

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Object ID AST0986
Description A transit instrument is the name given to a telescope mounted at right angles to a crossbar support. It is generally used to measure the "transit" or passage of the stars across a meridian. This instrument was used on one of the expeditions to observe the Transit of Venus in 1874. From 1927 to 1957, Britain's Time Service depended on this type of small Transit Instrument for time determination at Greenwich and later, at Abinger.
Date made 1870

Artist/Maker Troughton & Simms
Place made Unknown
Credit National Maritime Museum, Greenwich, London
Materials brass; glass; wood
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