The Keck Planet Finder (KPF) is a next-generation optical spectrometer in design for the W. M. Keck Observatory in Hawaii. KPF will discover and characterize extrasolar planets using the radial velocity (RV) or Doppler spectroscopy technique, with a single measurement precision of <50 cm/s, and a goal of 30 cm/s. Drawing on two decades of experience and technical innovation in the field, KPF will be a powerful tool both for the discovery and follow-up of planets, and for unprecedented insight into stellar behaviors, filling a niche with its combination of large aperture and extreme precision in the Northern Hemisphere.
