ROYAL ASTRONOMICAL SOCIETY / SCIENCE PHOTO LIBRARY ROYAL ASTRONOMICAL SOCIETY / SCIENCE PHOTO LIBRARY
Transit circle, Edinburgh Observatory, Scotland. A transit instrument is used to measure the positions of the stars as they transit a pre-defined point. This 8.6-inch (22 centimetres) transit telescope was part of the equipment donated by the Earl of Crawford (James Lindsay) in 1888 to set up a new Royal Observatory (1894) on Blackford Hill, Edinburgh. For this instrument at its previous location (the Dunecht Observatory), see image R102/0238. The instrument was made by the telescope manufacturers Troughton and Simms. At the Blackford Hill site, it was housed in a separate building to the west. The closed observation shutters are at top.
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