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| Organization | Dublin Institute for Advanced Studies (DIAS) | ||
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| Observatory code | 982  | ||
| Location | Dunsink, Dublin, Ireland | ||
| Coordinates | 53°23′13″N 6°20′15″W / 53.38708°N 6.33756°W | ||
| Established | 1785 | ||
| Website | Dunsink Observatory | ||
| Telescopes | |||
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  Location of Dunsink Observatory | |||
 Related media on Commons | |||
The Dunsink Observatory is an astronomical observatory established in 1785 in the townland of Dunsink in the outskirts of the city of Dublin, Ireland.[1]
Dunsink's most famous director was William Rowan Hamilton, who, amongst other things, discovered quaternions, the first non-commutative algebra form, while walking from the observatory to the city with his wife. The annual Hamilton Walk that commemorates this discovery begins at the observatory. He is also renowned for his Hamiltonian formulation of dynamics.
- ^ Alexander Thom, Irish Almanac and Official Directory 7th ed., 1850 p. 258. Retrieved: 2011-02-22.