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Description: | This 5-foot (153 cm) telescope is the earliest at the Observatory that can definitely be associated with its history. Instruments of this sort were a relatively recent invention and Halley's was possibly the first made in England. Lighter and less expensive than a mural quadrant, they had the disadvantage that they could easily become misaligned. Halley's transit instrument, however, proved useful and remained in service, with modifications until 1750.
Three packets in KB1288 8C \&\ 9B. Negative number A2839
caption: Edmund Halley's telescope for observing celestial transits of a meridian made by George Graham in 1721
caption: Halley?s 5-foot Transit Instrument | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | Refracting telescope Robert Graham Hooke Halley The Old Royal Observatory Greenwich Observatory Telescopes transit instruments Edmond George Transit Instrument | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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