Performance of the Gemini Planet Imager\u2019s adaptive optics system

摘要

The Gemini Planet Imager\u2019s adaptive optics (AO) subsystem was designed specifically to facilitate high-contrast imaging. A definitive description of the system\u2019s algorithms and technologies as built is given. 564 AO telemetry measurements from the Gemini Planet Imager Exoplanet Survey campaign are analyzed. The modal gain optimizer tracks changes in atmospheric conditions. Science observations show that image quality can be improved with the use of both the spatially filtered wavefront sensor and linear-quadratic-Gaussian control of vibration. The error budget indicates that for all targets and atmospheric conditions AO bandwidth error is the largest term.