OG
Olivier Guyon
astro-ph.IMastro-ph.EPastro-ph.SRphysics.opticsastro-phastro-ph.GAphysics.ins-detastro-ph.COcs.LGadaptive optics
On Valency
published · living versionsW_fc4f4qn8·v1 · currentpublished
SCExAO/CHARIS Near-Infrared Direct Imaging, Spectroscopy, and Forward-Modeling of kappa And b: A Likely Young, Low-Gravity Superjovian Companion
with Thayne Currie, Timothy D. Brandt, Taichi Uyama, Eric L. Nielsen +28
1 version
W_sfu3d8qf·v1published
W_yn3y8utv·v1published
Preprints & journals
361 papers in the corpus · 2002–2026Addressing the low-wind effect with the Lyot-based low-order wavefront sensor on SCExAO2609.00737v1 · Garima Singh, Sebastien Vievard, Julien Lozi et al.2026 · 0 citationsarXiv
AO3k + SCExAO: on-sky wavefront quality and demonstration of novel WFS techniques with the double XAO system2608.29572v1 · Julien Lozi, Kyohoon Ahn, Vincent Deo et al.2026 · 0 citationsarXiv
Demonstration of simultaneous PIAA- coronagraphy and wavefront sensing using a single metasurface-based focal-plane optic2608.24289v1 · Dhwanil Patel, Sebastiaan Y. Haffert, Skyler Palatnick et al.2026 · 0 citationsProc. SPIE 14154, 141545H (2026)
The Photonic Lantern Nuller: from concept to laboratory and on-sky demonstrations2608.24308v1 · Yinzi Xin, Nemanja Jovanovic, Dimitri Mawet et al.2026 · 0 citationsarXiv
The final design of GMagAO-X: the wavefront sensing and control (WFS&C) architecture of GMagAO-X2608.24324v1 · Sebastiaan Y. Haffert, Jared R. Males, Laird M. Close et al.2026 · 0 citationsarXiv
Sub-diffraction-limited coronagraphic imaging with nano-printed PIAACMC phase masks2608.24333v1 · Elena Tonucci, Sebastiaan Y. Haffert, Warren B. Foster et al.2026 · 0 citationsProc. SPIE 14154, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VII, 141547O (21 Aug 2026)
On-sky demonstration of self-learning predictive control with MagAO-X2608.24339v1 · Sebastiaan Y. Haffert, Jared R. Males, Parker T. Johnson et al.2026 · 0 citationsarXiv
Digging dark holes on-sky with the Self-Coherent Camera: Preliminary results2608.24343v1 · Elena Tonucci, Sebastiaan Y. Haffert, Jared R. Males et al.2026 · 0 citationsProc. SPIE 14150, Adaptive Optics Systems X, 141500A (19 Aug 2026)
No need to modulate: On-sky results of a Neural Network enhanced pyramid wavefront sensor and prospects for the ELTs2608.24438v1 · Rico Landman, Liam Koning, Sebastiaan Y. Haffert et al.2026 · 0 citationsarXiv
Forward modelling coronagraphic images with a fully physical, differentiable digital twin of MagAO-X: first laboratory results2608.24445v1 · Matthijs Mars, Sebastiaan Y. Haffert, Louis Desdoigts et al.2026 · 0 citationsarXiv
Instrumental artifacts in photonic lantern spectroastrometry and their mitigation with PLred2608.22548v1 · Yoo Jung Kim, Michael P. Fitzgerald, Malena Bloom et al.2026 · 0 citationsProc. SPIE 14148, Optical and Infrared Interferometry and Imaging X, 1414840 (2026)
SCExAO/CHARIS High-Contrast Pre-Launch Vetting of Roman Coronagraph Technology Demonstration PSF Reference Stars2608.17008v1 · Thayne Currie, Jie Li, Mona El Morsy et al.2026 · 0 citationsarXiv
The Roman Coronagraph Community Participation Program: pre-launch reference star list and impact of reference star properties on post-processing performance2608.17057v1 · Justin Hom, Schuyler G. Wolff, Jessica Gersh-Range et al.2026 · 0 citationsarXiv
Comparing realtime optical gain measurement and methods on MagAO-X2608.10539v1 · Eden McEwen, Jared R. Males, Olivier Guyon et al.2026 · 0 citationsarXiv
Technology and Science Advancing Observations with Roman Coronagraph Informed by Ground-Based High-Contrast Imaging2608.10092v1 · Mona El Morsy, Thayne Currie, Brianna Lacy et al.2026 · 0 citationsarXiv
The eXtreme Wavefront Control Toolkit: High-Contrast Imaging Instrument Control for Ground and Space-Based Coronagraphs2608.10156v1 · Jared R. Males, Joseph D. Long, Sebastiaan Y. Haffert et al.2026 · 0 citationsarXiv
Sensor fusion on MagAO-X: real time vibration control using accelerometers2608.10205v1 · Parker T. Johnson, Jared R. Males, Povilas Palunas et al.2026 · 0 citationsarXiv
The final design of GMagAO-X: high-contrast imaging at first-light of the GMT2608.10212v1 · Jared R. Males, Laird M. Close, Sebastiaan Y. Haffert et al.2026 · 0 citationsarXiv
windsoCC: reconstructing the wind-driven halo in MagAO-X images using wavefront sensor telemetry2608.10302v1 · Jay K. Kueny, Jared R. Males, Alycia J. Weinberger et al.2026 · 0 citationsarXiv
Closed-loop Atmospheric Dispersion Correction for High-Contrast Imaging with MagAO-X2608.10307v1 · Katie Twitchell, Sebastiaan Haffert, Jared R. Males et al.2026 · 0 citationsarXiv
Visible-Light High-Contrast Polarimetry with MagAO-X: Characterization and Initial Results2608.06579v1 · Miles Lucas, Laird Close, Jared R. Males et al.2026 · 0 citationsarXiv
He'e-Lab: A modular testbed for astrophotonics and wavefront sensing development2608.04316v1 · Sebastien Vievard, Christopher Hamner, Nour Skaf et al.2026 · 0 citationsarXiv
FIRST-PL: Commissioning the first visible photonic lantern spectrograph for sub-diffraction-limit astronomy on Subaru/SCExAO2608.04372v1 · Sebastien Vievard, Elsa Huby, Sylvestre Lacour et al.2026 · 0 citationsarXiv
Upgrading LBTI/NOMIC with a quadruple annular groove phase mask and GeoSnap detector for imaging nearby, habitable-zone exoplanets2607.28562v2 · Kevin Wagner, Manny Montoya, Steve Ertel et al.2026 · 0 citationsarXiv
Updating the SCExAO/CHARIS polarimetric calibration following the Nasmyth beam-switcher upgrade2607.23516v2 · Thomas McIntosh, Manxuan Zhang, Briley L. Lewis et al.2026 · 0 citationsarXiv
On-sky dark hole diggin' with implicit Electric Field Conjugation on MagAO-X2607.08146v1 · S. Y. Haffert, J. Liberman, J. R. Males et al.2026 · 0 citationsarXiv
Combining a Diffraction-Limited Coronagraph with Fiber Nulling: A Demonstration of Serially Coupling Different Nullers2606.31336v1 · Satoshi Itoh, Taro Matsuo, Reiki Kojima et al.2026 · 0 citationsarXiv
ffortissimo: A Freeform Forward-Modeling Pipeline for High-Contrast Images of Circumstellar Disks Based on Automatic Differentiation2606.23478v1 · Jay K. Kueny, Joseph D. Long, Jared R. Males et al.2026 · 0 citationsarXiv
A Multiband Study of the HR 4796A Disk in the Optical Using MagAO-X2606.23480v1 · Jay K. Kueny, Alycia J. Weinberger, Zhe-Yu Daniel Lin et al.2026 · 1 citationApJ 1001 189 (2026)
Japan's Possible Contributions for Coronagraph of the Habitable Worlds Observatory (HWO)2606.13440v1 · Keigo Enya, Kenta Yoneta, Naoshi Murakami et al.2026 · 0 citationsarXiv
The spectral energy distribution of YSES 1 b and its circumplanetary disc2605.26805v1 · Michiel Darcis, Sebastiaan Y. Haffert, Tomas Stolker et al.2026 · 2 citationsarXiv
Combining spectroscopy and wavefront control at deep contrast with photonic lanterns2604.14276v1 · Mona El Morsy, Olivier Guyon, Barnaby Norris et al.2026 · 0 citationsarXiv
Discovery of a Low-Mass Companion to the Accelerating Star HIP 53005 with Strongly Conflicting Mass Estimates2604.03767v1 · Taichi Uyama, Thayne Currie, Jerry W. Xuan et al.2026 · 0 citationsarXiv
The TOLIMAN mission: A low-cost space telescope for high precision narrow-angle astrometry2603.14683v1 · Peter Tuthill, Christopher Betters, Max Charles et al.2026 · 0 citationsarXiv
Phase-Induced Amplitude Apodization Complex Mask Coronagraph (PIAACMC) on-sky demonstration with MagAO-X2602.23016v1 · Elena Tonucci, Sebastiaan Haffert, Warren Foster et al.2026 · 0 citationsarXiv
Time-variable Scattered Light in Herbig Disks Observed with Subaru/SCExAO2602.20346v3 · Camryn Mullin, Miles Lucas, Ruobing Dong et al.2026 · 1 citationarXiv
OASIS Survey Direct Imaging and Astrometric Discovery of HIP 71618 B: A Substellar Companion Suitable for the Roman Coronagraph Technology Demonstration2512.02126v2 · Mona El Morsy, Thayne Currie, Brianna Lacy et al.2025 · 2 citationsarXiv
SCExAO/CHARIS and Gaia Direct Imaging and Astrometric Discovery of a Superjovian Planet 3--4 lambda/D from the Accelerating Star HIP 545152512.02159v2 · Thayne Currie, Yiting Li, Mona El Morsy et al.2025 · 3 citationsarXiv
On-sky demonstration of second-stage wavefront control with a photonic lantern2511.20560v1 · Aditya R. Sengupta, Jordan Diaz, Matthew DeMartino et al.2025 · 0 citationsarXiv
On-sky Demonstration of Subdiffraction-limited Astronomical Measurement Using a Photonic Lantern2510.19911v1 · Yoo Jung Kim, Michael P. Fitzgerald, S'ebastien Vievard et al.2025 · 2 citationsThe Astrophysical Journal Letters, Volume 993 (2025), Number 1
Dynamical Analysis of the HD 169142 Planet-Forming Disk: Twelve Years of High-Contrast Polarimetry2509.15323v1 · Miles Lucas, Michael Bottom, Ruobing Dong et al.2025 · 1 citationarXiv
Demonstrating Improved Contrast on the Roman Coronagraph with Spatial Linear Dark Field Control2509.08905v1 · Thayne Currie, Olivier Guyon, Ruslan Belikov et al.2025 · 0 citationsarXiv
Multi-band Spectral and Astrometric Characterization of the HIP 99770 b Planet with SCExAO/CHARIS and Gaia2509.02665v2 · Danielle Bovie, Thayne Currie, Mona El Morsy et al.2025 · 3 citationsarXiv
Wide Separation Planets In Time (WISPIT): Discovery of a Gap H Protoplanet WISPIT 2b with MagAO-X2508.19046v1 · Laird M. Close, Richelle F. van Capelleveen, Gabriel Weible et al.2025 · 0 citationsApJL, Vol. 990, Issue 1, Article number L9 (2025)
Discovery of H Emission from a Protoplanet Candidate Around the Young Star 2MASS J16120668-3010270 with MagAO-X2508.11155v2 · Jialin Li, Laird M. Close, Feng Long et al.2025 · 0 citationsarXiv
Unveiling the Atmosphere of HR 7672 B from the Near-Infrared High-Resolution Spectrum Using REACH/Subaru2508.01281v1 · Yui Kasagi, Yui Kawashima, Hajime Kawahara et al.2025 · 2 citationsarXiv
Tools for High Precision Photometry from Wide-Field Color Images2507.14289v2 · Kaloyan Penev, Angel Romero, S. Javad Jafarzadeh et al.2025 · 1 citationThe Astronomical Journal, Sep 2025, Volume 170, Number 3, page 191
Five New Sirius-Like White Dwarf + Main Sequence Star Systems with MagAO-X2505.14439v3 · Logan A. Pearce, Jared R. Males, Sebastiaan Y. Haffert et al.2025 · 0 citationsarXiv
A planetary-mass candidate imaged in the Young Suns Exoplanet Survey2505.13295v1 · Pengyu Liu, Matthew A. Kenworthy, Beth A. Biller et al.2025 · 0 citationsA&A 699, A78 (2025)
PIRATES -- a machine-learning framework for polarized, interferometric image reconstruction2505.11950v1 · Lucinda Lilley, Barnaby Norris, Peter Tuthill et al.2025 · 0 citationsarXiv
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