A second adaptive optics stage using a Zernike wavefront sensor cuts residual wavefront error sixfold and improves coronagraph contrast by up to 2 in a lab test, offering a new second-stage option for exoplanet imaging.
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Cascade adaptive optics with a second stage based on a Zernike wavefront sensor for exoplanet observations
A second adaptive optics stage using a Zernike wavefront sensor cuts residual wavefront error sixfold and improves coronagraph contrast by up to 2 in a lab test, offering a new second-stage option for exoplanet imaging.