Dunsink

Dunsink (Irish: Dún Sinche, meaning "Fort of Sinneach") is a townland in the civil parish of Castleknock, Dublin, in Ireland.[1] It is most famous for Dunsink Observatory where William Rowan Hamilton and Hermann Brück were directors. It is the oldest scientific institution in Ireland. Built in 1783–1785, the observatory houses a 12-inch (30 cm) refracting telescope which was built by Grubbs of Dublin using a French manufactured lens.

Dunsink

Dún Sinche
Townland (administrative unit)
Dunsink
Location in Ireland
Coordinates: 53°23′14″N 6°20′19″W
CountryIreland
ProvinceLeinster
CountyDublin
Government
  Local AuthorityFingal County Council
  Dáil ÉireannDublin North-West
Time zoneUTC+0 (WET)
  Summer (DST)UTC-1 (IST (WEST))

The 1880 Definition of Time Act set the official time in Ireland to be Dublin Mean Time. This was computed as the time at Dunsink, which was about GMT-25m21. In 1916 another Act moved Ireland to Greenwich Mean Time. Dunsink time is mentioned five times in James Joyce's novel, Ulysses.

The observatory is situated on a hill 8 km northwest of Dublin's city centre, where the Astronomy section of the School of Cosmic Physics in the Dublin Institute for Advanced Studies is located.

Dunsink is also the site of a major unofficial Traveller encampment, the subject of considerable media coverage in 2007.

References

  1. Placenames Database of Ireland Archived 2013-07-30 at the Wayback Machine - Dunsink townland.
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