ELODIE spectrograph
ELODIE was an echelle spectrograph installed on the 1.93m reflector at the Observatoire de Haute-Provence in south-eastern France.The purpose of the instrument was extrasolar planet detection by the radial velocity method.The instrument, which was located in a temperature-controlled room, was fed with optical fibers from the Cassegrain focus.The observatory provided an integrated data reduction pipeline which fully reduced the spectra immediately after acquisition and allowed the user to measure radial velocities to an accuracy as good as ±7 m/s.[5] Michel Mayor and Didier Queloz received the Nobel Prize in Physics in 2019 for their achievement.