Astronomer, Steward Observatory | Member of the Graduate Faculty | Astronomer, Large Binocular Telescope Observatory
He was also an adjunct professor of astronomy at the University of Arizona where he was Director of the University of Arizona/United Kingdom Infrared Telescope Observatory. He was also a member of the Space Telescope Imaging Spectrograph instrument team for the Hubble Space Telescope, the Nuker Team and the NASA Far Ultraviolet Spectroscopic Explorer mission science team. 1]