78 citations · 102 across the 9 of their papers we have counts for
9 papers
The TOLIMAN mission: A low-cost space telescope for high precision narrow-angle astrometry
Peter Tuthill, Christopher Betters, Max Charles +29
The TOLIMAN project is engaged with the construction, launch and operation of a low-cost space telescope of unorthodox optical design. Its primary science goal targets an exhaustiv…
PIRATES -- a machine-learning framework for polarized, interferometric image reconstruction
Lucinda Lilley, Barnaby Norris, Peter Tuthill +13
Optical interferometric image reconstruction is a challenging, ill-posed optimization problem which usually relies on heavy regularization for convergence. Conventional algorithms…
Nonlinear wavefront reconstruction from a pyramid sensor using neural networks
Alison P. Wong, Barnaby R. M. Norris, Vincent Deo +7
The pyramid wavefront sensor (PyWFS) has become increasingly popular to use in adaptive optics (AO) systems due to its high sensitivity. The main drawback of the PyWFS is that it i…
High Contrast Imaging at the Photon Noise Limit with WFS-based PSF Calibration
Olivier Guyon, Barnaby Norris, Marc-Antoine Martinod +10
Speckle Noise is the dominant source of error in high contrast imaging with adaptive optics system. We discuss the potential for wavefront sensing telemetry to calibrate speckle no…
High contrast imaging at the photon noise limit with self-calibrating WFS/C systems
Olivier Guyon, Barnaby Norris, Marc-Antoine Martinod +20
High contrast imaging (HCI) systems rely on active wavefront control (WFC) to deliver deep raw contrast in the focal plane, and on calibration techniques to further enhance contras…
SCExAO, a testbed for developing high-contrast imaging technologies for ELTs
Kyohoon Ahn, Olivier Guyon, Julien Lozi +21
To directly detect exoplanets and protoplanetary disks, the development of high accuracy wavefront sensing and control (WFS&C) technologies is essential, especially for ground-base…
Phase Retrieval and Design with Automatic Differentiation
Alison Wong, Benjamin Pope, Louis Desdoigts +3
The principal limitation in many areas of astronomy, especially for directly imaging exoplanets, arises from instability in the point spread function (PSF) delivered by the telesco…
An all-photonic focal-plane wavefront sensor
Barnaby R. M. Norris, Jin Wei, Christopher H. Betters +2
Adaptive optics (AO) is critical in astronomy, optical communications and remote sensing to deal with the rapid blurring caused by the Earth's turbulent atmosphere. But current AO…
Overview of focal plane wavefront sensors to correct for the Low Wind Effect on SUBARU/SCExAO
Sebastien Vievard, Steven Bos, Frederic Cassaing +15
The Low Wind Effect (LWE) refers to a phenomenon that occurs when the wind speed inside a telescope dome drops below m/s creating a temperature gradient near the telescope spide…