Dr. Nour Skaf Profile

Dr. Nour Skaf

at Subaru Telescope NAOJ

SPIE Involvement:

Author

Publications (18)

Proceedings Article | 30 August 2022 Presentation + Paper

Presentation + Paper

Imaged-based adaptive optics wavefront sensor referencing for high contrast imaging

Nour Skaf, Olivier Guyon, Anthony Boccaletti, Eric Gendron, Vincent Deo, Sébastien Vievard, Julien Lozi, Kyohoon Ahn, Thayne Currie

Proceedings Volume 12185, 121851U (2022) https://doi.org/10.1117/12.2630732

KEYWORDS: Adaptive optics, Wavefronts, Coronagraphy, Spatial frequencies, Fourier transforms, Wavefront sensors, Point spread functions, Imaging systems, Speckle, Telescopes

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Proceedings Article | 29 August 2022 Poster + Paper

Poster + Paper

A visible-light Lyot coronagraph for SCExAO/VAMPIRES

Miles Lucas, Michael Bottom, Olivier Guyon, Julien Lozi, Barnaby Norris, Vincent Deo, Sébastien Vievard, Kyohoon Ahn, Nour Skaf, Peter Tuthill

Proceedings Volume 12184, 121844E (2022) https://doi.org/10.1117/12.2632269

KEYWORDS: Coronagraphy, Point spread functions, Wavefronts, Satellites, Exoplanets, Calibration, Photometry, Stars, Adaptive optics, Telescopes

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Proceedings Article | 29 August 2022 Presentation

Presentation

Interferometric wavefront sensing at FIRST/SCExAO : self-calibrated fibered pupil-remapping spectrocopy using a metrology laser source

Sébastien Vievard, Vincent Deo, Elsa Huby, Sylvestre Lacour, Olivier Guyon, Nick Cvetojevic, Kevin Barjot, Guillermo Martin, Manon Lallement, Julien Lozi, Takayuki Kotani, Franck Marchis, Daniel Rouan, Kyohoon Ahn, Nour Skaf, Guy Perrin

Proceedings Volume 12183, 121830R (2022) https://doi.org/10.1117/12.2629299

KEYWORDS: Interferometry, Wavefront sensors, Telescopes, Metrology, Laser sources, Calibration, Spatial resolution, Optical fibers, Imaging systems, Coronagraphy

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Proceedings Article | 29 August 2022 Presentation

Presentation

Linearized Analytical Phase Diversity : towards lab and on-sky demonstration on the Subaru Telescope

Sébastien Vievard, Aurélie Bonnefois, Frédéric Cassaing, Laurent Mugnier, Jean-François Sauvage, Olivier Guyon, Julien Lozi, Vincent Deo, Kyohoon Ahn, Nour Skaf

Proceedings Volume 12185, 121850W (2022) https://doi.org/10.1117/12.2629122

KEYWORDS: Telescopes, Sensors, Large telescopes, Wavefront sensors, Thirty Meter Telescope, Segmented mirrors, Exoplanets, Cameras, Analytical research, Adaptive optics

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Proceedings Article | 29 October 2021 Presentation + Paper

Presentation + Paper

High contrast imaging wavefront sensor referencing from coronagraphic images

Nour Skaf, Olivier Guyon, Anthony Boccaletti, Vincent Deo, Julien Lozi, Sebastien Vievard, Thayne Currie, Barnaby Norris, Kyohoon Ahn, Eric Gendron, Fabrice Vidal, Florian Ferreira, Arnaud Sevin, Arielle Bertrou-Cantou

Proceedings Volume 11823, 1182319 (2021) https://doi.org/10.1117/12.2595008

KEYWORDS: Coronagraphy, Adaptive optics, Point spread functions, Wavefronts, Cameras, Image quality, Telescopes, Wavefront sensors, Imaging systems, Computer simulations

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Proceedings Article | 1 September 2021 Presentation + Paper

Presentation + Paper

Very high resolution spectro-interferometry with wavefront sensing capabilities on Subaru/SCExAO using photonics

S. Vievard, K. Ahn, A. Arriola, K. Barjot, N. Cvetojevic, V. Deo, T. Gretzinger, S. Gross, O. Guyon, E. Huby, N. Jovanovic, T. Kotani, S. Lacour, T. Lagadec, M. Lallement, V. Lapeyrere, J. Lozi, F. Marchis, G. Martin, M.-A. Martinod, B. Norris, G. Perrin, D. Rouan, N. Skaf, P. Tuthill, M. Withford, G. Duchêne

Proceedings Volume 11823, 118230C (2021) https://doi.org/10.1117/12.2594840

KEYWORDS: Telescopes, Wavefront sensors, Single mode fibers, Stars, Optical fibers, Interferometry, Diffraction, Wavefronts, Spatial resolution, Photonics

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Proceedings Article | 1 September 2021 Presentation + Paper

Presentation + Paper

SCExAO: a testbed for developing high-contrast imaging technologies for ELTs

Kyohoon Ahn, Olivier Guyon, Julien Lozi, Sébastien Vievard, Vincent Deo, Nour Skaf, Ruslan Belikov, Steven Bos, Michael Bottom, Thayne Currie, Richard Frazin, Kyle V. Gorkom, Tyler Groff, Sebastiaan Haffert, Nemanja Jovanovic, Hajime Kawahara, Takayuki Kotani, Jared Males, Frantz Martinache, Ben Mazin, Kelsey Miller, Barnaby Norris, Alexander Rodack, Alison Wong

Proceedings Volume 11823, 1182303 (2021) https://doi.org/10.1117/12.2594963

KEYWORDS: Coronagraphy, Telescopes, Human-computer interaction, Speckle, Stars, Adaptive optics, Visible radiation, Exoplanets, Wavefronts, Wavefront sensors

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Proceedings Article | 1 September 2021 Presentation + Paper

Presentation + Paper

High contrast imaging at the photon noise limit with self-calibrating WFS/C systems

Olivier Guyon, Barnaby Norris, Marc-Antoine Martinod, Kyohoon Ahn, Peter Tuthill, Jared Males, Alison Wong, Nour Skaf, Thayne Currie, Kelsey Miller, Steven Bos, Julien Lozi, Vincent Deo, Sebastien Vievard, Ruslan Belikov, Kyle van Gorkom, Sebastiaan Haffert, Benjamin Mazin, Michael Bottom, Richard Frazin, Alexander Rodack, Tyler Groff, Nemanja Jovanovic, Frantz Martinache

Proceedings Volume 11823, 1182318 (2021) https://doi.org/10.1117/12.2594885

KEYWORDS: Calibration, Wavefronts, Imaging systems, Wavefront sensors, Speckle, Planets, Sensors, Photonics, Waveguides, Telescopes

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Proceedings Article | 1 September 2021 Presentation + Paper

Presentation + Paper

A new type of exoplanet direct imaging search: a SCExAO/CHARIS survey of accelerating stars

Thayne Currie, Timothy Brandt, Masayuki Kuzuhara, Jeffrey Chilcote, Edward Cashman, R. Liu, Kellen Lawson, Taylor Tobin, G. Mirek Brandt, Olivier Guyon, Julien Lozi, Vincent Deo, Sebastien Vievard, Kyoohun Ahn, Nour Skaf

Proceedings Volume 11823, 1182304 (2021) https://doi.org/10.1117/12.2595001

KEYWORDS: Stars, Planets, Exoplanets, Adaptive optics, Wavefronts, Wavefront sensors, Telescopes, Infrared imaging, Data processing, Photometry

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Proceedings Article | 1 September 2021 Presentation + Paper

Presentation + Paper

Wavefront sensing using non-redundant aperture masking interferometry: tests and validation on Subaru/SCExAO

V. Deo, S. Vievard, N. Cvetojevic, B. Norris, O. Guyon, J. Lozi, K. Ahn, E. Huby, S. Lacour, F. Martinache, N. Skaf, P. Tuthill

Proceedings Volume 11823, 118231A (2021) https://doi.org/10.1117/12.2594977

KEYWORDS: Adaptive optics, Wavefront sensors, Telescopes, Sensors, Interferometry, Photons, Imaging systems, Cameras

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Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

Validating advanced wavefront control techniques on the SCExAO testbed/instrument

Olivier Guyon, Julien Lozi, Sebastien Vievard, Ruslan Belikov, Eduardo Bendek, Steven Bos, Thayne Currie, Vincent Deo, Michael Fitzgerald, Damien Gratadour, Tyler Groff, Nemanja Jovanovic, Hajime Kawahara, Takayuki Kotani, Tomoyuki Kudo, Coline Lopez, Hatem Ltaief, Jared Males, Frantz Martinache, Marc-Antoine Martinod, Benjamin Mazin, Kelsey Miller, Barnaby Norris, Mamadou Ndiaye, Eugene Pluzhnyk, Ananya Sahoo, Arnaud Sevin, Nour Skaf, Frans Snik, Motohide Tamura, Alison Wong

Proceedings Volume 11448, 114481Z (2020) https://doi.org/10.1117/12.2562723

KEYWORDS: Wavefronts, Adaptive optics, Coronagraphy, Prototyping, Sensor fusion, Cameras, Hardware testing, Multiplexing, Wavefront sensors, Reliability

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Focal plane wavefront sensing on SUBARU/SCExAO

S. Vievard, S. Bos, F. Cassaing, T. Currie, V. Deo, O. Guyon, N. Jovanovic, C. Keller, M. Lamb, C. Lopez, J. Lozi, F. Martinache, K. Miller, A. Montmerle-Bonnefois, L. Mugnier, M. N'Diaye, B. Norris, A. Sahoo, J.-F. Sauvage, N. Skaf, F. Snik, M. Wilby, A. Wong

Proceedings Volume 11448, 114486D (2020) https://doi.org/10.1117/12.2562787

KEYWORDS: Wavefront sensors, Coronagraphy, Adaptive optics, Telescopes, Thermal effects, Exoplanets, Large telescopes, Spatial resolution, Sensors, Domes

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Proceedings Article | 13 December 2020 Poster + Presentation + Paper

Poster + Presentation + Paper

On-sky performance and recent results from the Subaru coronagraphic extreme adaptive optics system

Thayne Currie, Olivier Guyon, Julien Lozi, Ananya Sahoo, Sebastien Vievard, Vincent Deo, Jeffrey Chilcote, Tyler Groff, Timothy Brandt, Kellen Lawson, Nour Skaf, Frantz Martinache, N. Jeremy Kasdin

Proceedings Volume 11448, 114487H (2020) https://doi.org/10.1117/12.2576349

KEYWORDS: Adaptive optics, Coronagraphy, Stars, Planets, Exoplanets, Telescopes, Speckle, Polarimetry, Optical spheres, Gemini Planet Imager

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Adaptive optics real-time control with the compute and control for adaptive optics (Cacao) software framework

Olivier Guyon, Arnaud Sevin, Florian Ferreira, Hatem Ltaief, Jared Males, Vincent Deo, Damien Gratadour, Sylvain Cetre, Frantz Martinache, Julien Lozi, Sebastien Vievard, Neelay Fruitwala, Steven Bos, Nour Skaf

Proceedings Volume 11448, 114482N (2020) https://doi.org/10.1117/12.2562822

KEYWORDS: Adaptive optics, Adaptive control, Software frameworks, Sensors, Sensor fusion, Algorithm development, Open source software, Computing systems, Heart, Computer simulations

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Proceedings Article | 20 September 2018 Paper

Paper

Subaru AO188 upgrade phase 1: integration of the new real-time system

Christophe Clergeon, Yosuke Minowa, Olivier Guyon, Yoshito Ono, Etsuko Mieda, Nour Skaf, Hiroshige Yoshida, Yukata Hayano, Takashi Hattori, Kiaina Schubert, Ananya Sahoo, Julien Lozi, Sebastien Vievard

Proceedings Volume 10703, 1070337 (2018) https://doi.org/10.1117/12.2314254

KEYWORDS: Adaptive optics, Avalanche photodetectors, Real-time computing, Electronics, Telescopes, Wavefront sensors, Actuators, Control systems, Human-machine interfaces, Matrices

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Proceedings Article | 17 July 2018 Presentation + Paper

Presentation + Paper

The compute and control for adaptive optics (CACAO) real-time control software package

Olivier Guyon, Arnaud Sevin, Damien Gratadour, Julien Bernard, Hatem Ltaief, Dalal Sukkari, Sylvain Cetre, Nour Skaf, Julien Lozi, Frantz Martinache, Christophe Clergeon, Barnaby Norris, Alison Wong, Jared Males

Proceedings Volume 10703, 107031E (2018) https://doi.org/10.1117/12.2314315

KEYWORDS: Adaptive optics, Control systems, Actuators, Wavefronts, Image processing, Cameras, Data processing, Adaptive control, Process control, Sensor fusion

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Proceedings Article | 13 July 2018 Paper

Paper

SCExAO, an instrument with a dual purpose: perform cutting-edge science and develop new technologies

Julien Lozi, Olivier Guyon, Nemanja Jovanovic, Sean Goebel, Prashant Pathak, Nour Skaf, Ananya Sahoo, Barnaby Norris, Frantz Martinache, Mamadou N'Diaye, Ben Mazin, Alex Walter, Peter Tuthill, Tomoyuki Kudo, Hajime Kawahara, Takayuki Kotani, Michael Ireland, Nick Cvetojevic, Elsa Huby, Sylvestre Lacour, Sébastien Vievard, Tyler Groff, Jeffrey Chilcote, Jeremy Kasdin, Justin Knight, Frans Snik, David Doelman, Yosuke Minowa, Christophe Clergeon, Naruhisa Takato, Motohide Tamura, Thayne Currie, Hideki Takami, Masa Hayashi

Proceedings Volume 10703, 1070359 (2018) https://doi.org/10.1117/12.2314282

KEYWORDS: Cameras, Coronagraphy, Polarization, Near infrared, Speckle, Exoplanets, Wavefronts, Telescopes, Infrared radiation, Polarimetry

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Proceedings Article | 11 July 2018 Paper

Paper

Subaru Coronagraphic Extreme-AO (SCExAO) wavefront control: current status and ongoing developments

Ananya Sahoo, Olivier Guyon, Christophe Clergeon, Nour Skaf, Yosuke Minowa, Julien Lozi, Nemanja Jovanovic, Frantz Martinache

Proceedings Volume 10703, 1070350 (2018) https://doi.org/10.1117/12.2314333

KEYWORDS: Wavefronts, Coronagraphy, Wavefront sensors, Speckle, Adaptive optics, Calibration, Telescopes

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Showing 5 of 18 publications

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