Articles by Olivier Guyon

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Olivier Guyon

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Paths to Robust Exoplanet Science Yield Margin for the Habitable Worlds Observatory

27 February 2025 by Christopher Stark and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

Three Years of High-Contrast Imaging of the PDS 70 b and c Exoplanets at Hα with MagAO-X: Evidence of Strong Protoplanet Hα Variability and Circumplanetary Dust

19 February 2025 by Laird Close and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

Apollon Real-Time Adaptive Optics (ARTAO) -- Astronomy-Inspired Wavefront Stabilization in Ultraintense Lasers

21 January 2025 by Jonas Benjamin Ohland and others

Optics, High Energy Physics

Phasing the Giant Magellan Telescope: Lab Experiments and First On-sky Demonstration

14 January 2025 by Maggie Kautz and others

Instrumentation and Methods for Astrophysics

Apollon Real-Time Adaptive Optics (ARTAO) -- Astronomy-Inspired Wavefront Stabilization in Ultraintense Lasers

11 December 2024 by Jonas Benjamin Ohland and others

Optics, High Energy Physics

Spectroscopy using a visible photonic lantern at the Subaru telescope: Laboratory characterization and first on-sky demonstration on Ikiiki (α Leo) and `Aua (α Ori)

14 November 2024 by Sébastien Vievard and others

Instrumentation and Methods for Astrophysics

Spectral characterization of a 3-port photonic lantern for application to spectroastrometry

4 November 2024 by Yoo Jung Kim and others

Instrumentation and Methods for Astrophysics, Optics

RISTRETTO: the PIAA Nuller in the prototyping phase

1 November 2024 by N. Restori and others

Instrumentation and Methods for Astrophysics

Visible-Light High-Contrast Imaging and Polarimetry with SCExAO/VAMPIRES

16 October 2024 by Miles Lucas and others

Instrumentation and Methods for Astrophysics

SCExAO/CHARIS Near-Infrared Scattered-Light Imaging and Integral Field Spectropolarimetry of the AB Aurigae Protoplanetary System

15 October 2024 by Erica Dykes and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

Tuning the MAPS Adaptive Secondary Mirror: Actuator Control, PID Tuning, Power Spectra and Failure Diagnosis

20 September 2024 by Jess Johnson and others

Instrumentation and Methods for Astrophysics

Real-time control and data standardization on various telescopes and benches

19 September 2024 by Nour Skaf and others

Instrumentation and Methods for Astrophysics

RISTRETTO: a VLT XAO design to reach Proxima Cen b in the visible

12 September 2024 by Nicolas Blind and others

Instrumentation and Methods for Astrophysics, Earth and Planetary Astrophysics

Design, scientific goals, and performance of the SCExAO survey for planets around accelerating stars

10 September 2024 by Mona Morsy and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

Spectral interferometric wavefront sensing: a solution for petalometry at Subaru/SCExAO

8 September 2024 by Vincent Déo and others

Instrumentation and Methods for Astrophysics

Photonic chip for visible interferometry: laboratory characterization and comparison with the theoretical model

5 September 2024 by Manon Lallement and others

Instrumentation and Methods for Astrophysics

Photonic beam-combiner for visible interferometry with SCExAO/FIRST: laboratory characterization and design optimization

5 September 2024 by Manon Lallement and others

Instrumentation and Methods for Astrophysics

RISTRETTO: reflected-light exoplanet spectroscopy at the diffraction limit of the VLT

4 September 2024 by Christophe Lovis and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

Dynamical and Atmospheric Characterization of the Substellar Companion HD 33632 Ab from Direct Imaging, Astrometry, and Radial-Velocity Data

29 July 2024 by Mona Morsy and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

AO3k at Subaru: First on-sky results of the facility extreme-AO

27 July 2024 by Julien Lozi and others

Instrumentation and Methods for Astrophysics

The GLINT nulling interferometer: improving nulls for high-contrast imaging

25 July 2024 by Eckhart Spalding and others

Instrumentation and Methods for Astrophysics

Exo-NINJA at Subaru: fiber-fed spectro-imaging of exoplanets and circumstellar disks at R\sim4000

23 July 2024 by Mona Morsy and others

Instrumentation and Methods for Astrophysics, Earth and Planetary Astrophysics

Visible Photonic Lantern integration, characterization and on-sky testing on Subaru/SCExAO

22 July 2024 by Sébastien Vievard and others

Instrumentation and Methods for Astrophysics

Challenge of direct imaging of exoplanets within structures: disentangling real signal from point source from background light

18 July 2024 by Jialin Li and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

On-sky, real-time optical gain calibration on MagAO-X using incoherent speckles

17 July 2024 by Eden Mcewen and others

Instrumentation and Methods for Astrophysics

High-contrast imaging at first-light of the GMT: the wavefront sensing and control architecture of GMagAO-X

17 July 2024 by Sebastiaan Haffert and others

Instrumentation and Methods for Astrophysics, Optics

MagAO-X Phase II Upgrades: Implementation and First On-Sky Results of a New Post-AO 1000 Actuator Deformable Mirror

17 July 2024 by Jay Kueny and others

Instrumentation and Methods for Astrophysics

High-Contrast Imaging at First-Light of the GMT: The Preliminary Design of GMagAO-X

17 July 2024 by Jared Males and others

Instrumentation and Methods for Astrophysics, Earth and Planetary Astrophysics

More data than you want, less data than you need: machine learning approaches to starlight subtraction with MagAO-X

17 July 2024 by Joseph Long and others

Instrumentation and Methods for Astrophysics

MagAO-X: Commissioning Results and Status of Ongoing Upgrades

17 July 2024 by Jared Males and others

Instrumentation and Methods for Astrophysics

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