From 1979 to 1982 Tobin held a postdoctoral lectureship at the
University of St Andrews in Scotland and from 1982 to 1987 a position at the
Marseille Astrophysics Laboratory. In 1987 Tobin became a lecturer in astronomy at the
University of Canterbury in
Christchurch, New Zealand. He held that position for 19 years until his retirement in 2006. During that time he was also the director of the
Mt John University Observatory where he studied the star
beta Pictoris. The history of astronomy was another field of Tobin's research. He studied the past
Transit of Venus expeditions and wrote a biography of the French physicist
Léon Foucault. Tobin's research on telescopes made by
James Short found that
Otago Museum's telescope was made in 1736 making it the oldest telescope in New Zealand. Tobin retired to France but continued to work on astronomy projects. He returned to New Zealand in 2008 to take up a visiting
Erskine Fellowship at Canterbury, in 2012 to attend the Starlight Conference in
Tekapo and the 50th anniversary of the Mt John University Observatory in 2015. == Political candidacy ==