1. Gemini Observatory; AURA; Casilla 603 La Serena Chile
2. School of Electrical Engineering and Computer Science (EECS); University of Ottawa; 800 King Edward Street, P.O. Box 450, Station A Ottawa ON K1N 6N5 Canada
3. School of Mathematics and Statistics; Carleton University; 1125 Colonel By Drive Ottawa ON K1S 5B6 Canada