Professor (1996)
Associate Professor (1988)
Assistant Professor (1984)
NSERC University Research Fellow (1980)
NASA Group Achievement Award (2016)
Member, Societe royal des sciences do Liege (2012)
Karl Kamper Memorial Lecture (2012)
UBC Killam Senior Science Research Prize (2003)
NASA Group Achievement Award (2000)
Fellow of the Royal Astronomical Society (1998)
Samuel Fefferman Memorial Gold Medal (1971)
Canadian Association of Physicists Prize (1967)
Canadian Mathematical Congress Prize (1967)
Chinese Large Optical Telescope, Site Selection Committee
Chinese Large Optical Telescope, Optical Design Review Committee (2017)
Thirty Meter Telescope, Review Panel for TIPC Adaptive Optics Laser (2015)
National Science Foundation, Gemini Observatories Review Committee (2011)
President, Canadian Astronomical Society (2008-2010)
Canadian Space Agency, CLEAR-1 Mission Science Definition Team (2009)
Thirty Meter Telescope, Performance Review Panel (2008)
1st Vice President, Canadian Astronomical Society (2006-2008)
2nd Vice President, Canadian Astronomical Society (2004-2006)
Project Scientist, Thirty-Meter Telescope near-infrared adaptive optics system (2006-2013)
Thirty-Meter Telescope, Science Advisory Committee Chair (2005-2007, 2010-2011)
Thirty-Meter Telescope, Science Advisory Committee Co-chair (2004-2017)
Thirty-Meter Telescope, Performance Review Panel (2008)
NSF Gemini Review Panel (2010)
Canadian Large Telescope Science Steering Committee (2002-2004)
NGST Canadian Science Steering Committee (1998-2002)
Director, Large Zenith Telescope (1996-2017)
NASA Orbital Debris Program (1994-2002)
CFHT Scientific Advisory Committee (1996-2000)
Gemini Project Working Groups and Review Committee (1992-1994)
HIA Advisory Board (1991-1992)
NRC Associate Committee (1989-1991)