Rosse Observatory, Birr Castle

Welcome to the Rosse Observatory, operated by Trinity College Dublin and the Dublin Institute for Advanced Studies. The observatory is dedicated to studying solar activity and its effects on Earth and it is located in the radio quiet environment of Birr Castle Demesne, Co. Offaly, Ireland (53° 05' 38.9'' N, 7° 55' 12.7'' W).

We operate a number of instruments at the observatory, including e-Callisto solar radio burst monitors developed by ETH Zurich, a Sudden Ionospheric Monitor developed by Stanford University, and and geomagnetic instruments provided by the Dublin Institute for Advanced Studies (DIAS).

We also host the an international LOFAR radio telescope on behalf of the Irish LOFAR Consortium.

Please visit the Rosse Observatory data archives to download FITS data files or quicklook PNGs, and to view hourly-updated dynamic spectra. More information on solar activity is available at