13 citations · 13 across the 3 of their papers we have counts for
4 papers
Phantom Zernike Wavefront Sensor: Phase Contrast with Engineered Focal Plane Reference Speckles
Benjamin Courtney-Barrer
We introduce the Phantom Zernike Wavefront Sensor (phantom ZWFS), an engineered reference extension of phase-contrast wavefront sensing in which controlled pupil plane modulation g…
Harmonic phase diagnostics of long secondary periods. Testing predictions of oscillatory convective dipole modes in the OGLE sample
Benjamin Courtney-Barrer, Xavier Haubois, Michael Ireland +1
Long secondary periods (LSPs) in luminous red giants remain the only major class of long-period stellar variability without a secure physical origin. Competing hypotheses include b…
Turbulence nowcast for the Cerro Paranal and Cerro Armazones observatory sites
Julien Milli, Tomás Rojas, Benjamin Courtney-Barrer +4
Optical turbulence affects significantly the quality of ground-based astronomical observations. An accurate and reliable forecast of optical turbulence can help to optimise the sch…
Simple Stabilized Radio-Frequency Transfer with Optical Phase Actuation
David Gozzard, Sascha Schediwy, Richard Whitaker +1
We describe and experimentally evaluate a stabilized radio-frequency transfer technique that employs optical phase sensing and optical phase actuation. This technique can be achiev…