DIAS Dunsink Observatory

DIAS Dunsink Observatory Dunsink Observatory was founded in 1785 and is now home to the Dublin Institute for Advanced Studies Astronomy & Astrophysics Section.

Information on visitor nights, transition year programmes and other public events can be found at www.dias.ie/dunsink Dunsink Observatory, opened in 1785, was the first building in Ireland specifically constructed for scientific research. It was where our greatest mathematician and arguably our greatest scientist, William Rowan Hamilton, lived and worked. And it was the place where the time standa

rd for Ireland was set using astronomical observations until the first world war. Dunsink time is mentioned several times in James Joyce’s great novel Ulysses, and the clocks used are still on display in the Observatory today. Originally part of Trinity College Dublin, it was purchased by the state in 1947 when the School of Cosmic Physics was being established as part of the Dublin Institute for Advanced Studies (DIAS) https://www.dias.ie/. The observatory is used nowadays mainly for public outreach, operated by the Astronomy and Astrophysics section (https://www.dias.ie/cp-geophysics/astro/) of DIAS. It is also used for small workshops and conferences, and as visitor accommodation for the Dublin Institute for Advanced Studies. Visitor Nights are held on the 1st and 3rd Thursday of each month during the winter months (October-March). Weather permitting, visitors can view celestial objects through the historic Grubb Telescope. Visitors can also attend audio-visual presentations and lectures on a wide variety of topics in astronomy. There is also a question and answer session on all your astronomy related queries.

31/08/2026

🚨Applications for our TY Week are now OPEN! 🚨

More information and the link to the application form are available on our website at https://www.dunsink.dias.ie/education/secondary-activities/ty-week/

Please share with any transition year students you think might be interested as applications will close on the 21st of September! 🔭

Dublin Institute for Advanced Studies - DIAS

31/08/2026

🚨Applications for our TY Week are now OPEN! 🚨

More information and the link to the application form are available on our website through the link in our bio!

Please share with any transition year students you think might be interested as applications will close on the 21st of September! 🔭

14/08/2026

DIAS solar physicists Laura Hayes and Peter Gallagher taking to the air to capture the total solar eclipse on Wednesday.

The historical links between Dunsink Observatory and Dublin Port and the practical applications of astronomy to navigati...
13/08/2026

The historical links between Dunsink Observatory and Dublin Port and the practical applications of astronomy to navigation and timekeeping.

13/08/2026

What exactly is an eclipse, and what can eclipses teach us about the Sun? 🌒☀️

DIAS researchers explain the science behind yesterday’s eclipse, from viewing the Sun safely using a telescope projection to some of the big questions we are still asking about our nearest star.

A huge thank you to everyone who joined us at DIAS Dunsink Observatory yesterday. It was wonderful to welcome so many people and share both the experience of the eclipse and the science behind it.

Special thanks to for supporting the event, and to ESERO Ireland for providing eclipse glasses to help our visitors view the eclipse safely 🕶️☀️

ESEROIreland

10/08/2026

“Why can’t I look at the sun during the eclipse?” is a question we have been getting a lot so with only a few days to go we wanted to answer this very important question! 😎

10/08/2026

"Why can't I look at the sun during the eclipse?" is a question we have been getting a lot so with only a few days to go we wanted to answer this very important question! 😎

Dublin Institute for Advanced Studies - DIAS Research Ireland Armagh Observatory and Planetarium Birr Castle Demesne

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Castleknock

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