Rosse Observatory

Welcome to the Rosse Observatory, operated by Trinity College Dublin and the Dublin Institute for Advanced Studies. The observatory is dedicated to studying radio emission from astronomical objects such as the Sun, pulsars other variable sources. It is located in the radio quiet environment of the demesne.


Welcome to I-LOFAR (Irish Low Frequency Array), a very exciting project here at Birr Castle Demesne. Following the award of 1.4 million from Science Foundation Ireland to Trinity College, Trinity have built a cutting-edge radio telescope here on the demesne. I-LOFAR will connect Ireland to the international LOFAR telescope. This site is the perfect location for such a project following on in the spectacular shadows of the “Leviathan” otherwise known as the Great Telescope which was built at Birr Castle back in 1845 and the Leviathan remained that largest telescope in the world for 70 years.

For more information on I-LOFAR project please visit a project run by Trinity College Dublin.

LOFAR Milky Way

World Heritage Aspirations

The Astronomical Observatories of Ireland has been formed and it represents Irelands three historic observatories that possess a remarkable astronomical heritage, one that stretches all the way back to the Georgian era. These are the observatories of Birr, Armagh and Dunsink. All three remain active today, places where frontline science continues to be carried out while also serving as centres for communicating science to the public and explaining it to students. Their heritage is entwined with the telescopes they possess, pioneering instruments of their time that are still found largely in situ today, in how these telescopes were used, and in the science that was carried out there. The heritage is so strong and so worthy of greater protection that these three Irish observatories have come together to seek UNESCO world heritage listing.

World Heritage is a designation provided by UNESCO – the United Nations Educational, Scientific and Cultural Organisation – for places that have outstanding universal value to humanity and are worthy of protection so that they can be appreciated and enjoyed by future generations.

Armagh, Birr, and Dunsink observatories represent a living history, places of science running from their foundation to the present day and, hopefully, well into the future. As such they also display a deep astronomical heritage. We need to protect this heritage, to conserve and preserve their telescopes, instruments and archives, as well as to educate on the importance of science for society and to inspire the next generation. The observatories have now embarked on a journey to seek World Heritage designation to help achieve this objective.