A/Prof. O’Byrne's current astronomical reseach interests are focussed onAstrophotonics' - using optical fibre devices to enhance observations of faint astronomical objects. Earlier research has centred on high resolution using ground-based optical telescopes and interferometers, specifically Adaptive Optics, Optical Stellar Interferometry (in particular the Sydney University Stellar Interferometer - SUSI), multi-band optical filters for astronomy, multi-wavelength imaging of nearby face-on spiral galaxies and measuring magnetic fields on the Sun
He is also active in Physics and Astronomy Education research, with roles in various University, ALTC and AUTC projects, as well as interests in Astronomy and Physics education groups, in particular theSydney University Physics Education Research (SUPER)group.