Anthony (Tony) F.J. Moffat is an emeritus professor of astronomy at the Université de Montréal in Montreal, Quebec, Canada. He was appointed as a fellow of the Royal Society of Canada in 2001. Moffat's research focuses on massive stars (Wolf-Rayet stars in particular), stellar winds, binary stars, as well as the structure and dynamics of star formation regions and galaxies.
WR 124 is a Wolf–Rayet star in the constellation of Sagitta surrounded by a ring nebula of expelled material known as M1-67. It is one of the fastest runaway stars in the Milky Way with a radial velocity around 200 km/s. It was discovered by Paul W. Merrill in 1938, identified as a high-velocity Wolf–Rayet star. In 1982, Anthony Moffat et al. discovered that WR 124 is a variable star. It was given its variable star designation, QR Sagittae, in 1985. It is listed in the General Catalogue of Variable Stars with a brightness range of 0.08 magnitudes.