98 citations · 183 across the 6 of their papers we have counts for
6 papers
Single-star optical turbulence profiling techniques for the SHIMM and other Shack-Hartmann instruments
Ryan Griffiths, Timothy Butterley, Richard Wilson +1
Atmospheric optical turbulence (OT) monitoring is crucial for site characterisation at astronomical observatories and optical communications ground stations. The Shack-Hartmann Ima…
Estimating Atmospheric Wind Speeds From Gemini Planet Imager AO Telemetry
Zhenxi Du, Saavidra Perera, Daniel Levinstein +6
The Earth's atmosphere is comprised of turbulent layers that result in speckled and blurry images from ground-based visible and infrared observations. Adaptive Optics (AO) systems…
A comparison of next-generation turbulence profiling instruments at Paranal
Ryan Griffiths, Lisa Bardou, Timothy Butterley +6
A six-night optical turbulence monitoring campaign has been carried at Cerro Paranal observatory in February and March, 2023 to facilitate the development and characterisation of t…
Long-term eclipse timing of white dwarf binaries: an observational hint of a magnetic mechanism at work
M. C. P. Bours, T. R. Marsh, S. G. Parsons +18
We present a long-term programme for timing the eclipses of white dwarfs in close binaries to measure apparent and/or real variations in their orbital periods. Our programme includ…
Atmospheric Scintillation in Astronomical Photometry
J. Osborn, D. Föhring, V. S. Dhillon +1
Scintillation noise due to the Earth's turbulent atmosphere can be a dominant noise source in high-precision astronomical photometry when observing bright targets from the ground.…
A Shack-Hartmann wavefront sensor projected onto the sky with reduced focal anisoplanatism
T. Butterley, G. D. Love, R. W. Wilson +2
A method for producing a laser guide star wavefront sensor for adaptive optics with reduced focal anisoplanatism is presented. A theoretical analysis and numerical simulations have…