Philippe Vallée has been a research associate in the Department of Physics at the Université de Montréal since 1994. During this time, he has participated in the construction of numerous astronomical instruments used at the Mont-Mégantic Observatory and at international observatories in Chile and Hawaii. Among other things, he designed the optomechanics of the SIMON (Spetrographe Imageur de MONtréal) and CPAPIR (Caméra PAnoramique Proche Infra-Rouge) cameras used at the OMM. He has also contributed to the following international projects: WIRCAM (Wide InfraRed CAMera for the CFHT, Canada France Hawaii Telescope), GPI (Gemini Planet Imager for the GEMINI telescope), SITELLE (a Fourier transform spectroimager for the CFHT). He has also contributed to laboratory testing of subsystems for the James Webb Space Telescope.