Dr. Lianqi Wang Profile

Dr. Lianqi Wang

Lead Adaptive Optics Systems Engineer at Thirty Meter Telescope

SPIE Involvement:

Conference Program Committee | Author

Publications (47)

Proceedings Article | 29 August 2024 Presentation + Paper

Presentation + Paper

KOLA: a concept for an optical multi-conjugate adaptive optics system for the W.M. Keck Observatory

Jessica Lu, Rich Dekany, Brianna Peck, Antonin Bouchez, Max Millar-Blanchaer, Phil Hinz, Kodi Rider, Mark Chun, Peter Wizinowich, Lianqi Wang, Steph Sallum, Brooke DiGia, Charles-Antoine Claveau

Proceedings Volume 13097, 130970H (2024) https://doi.org/10.1117/12.3020725

KEYWORDS: Adaptive optics, Simulations, Actuators, Stars, Spatial resolution, Wavefront sensors, Infrared radiation, Telescopes, Point spread functions, Image quality

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Proceedings Article | 28 August 2024 Presentation

Presentation

Progress report on the TMT Adaptive Optics Facility

Corinne Boyer, Lianqi Wang, Melissa Trubey, Benjamin Irarrazaval, John Miles, Konstantinos Vogiatzis, Jean-Pierre Véran, Jenny Atwood

Proceedings Volume 13097, 130971Z (2024) https://doi.org/10.1117/12.3019281

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Proceedings Article | 27 August 2024 Presentation + Paper

Presentation + Paper

Petalling mode sensing for the Thirty Meter Telescope

Lianqi Wang, Matthias Schoeck, Jean-Pierre Veran, Konstantinos Vogiatzis, Corinne Boyer

Proceedings Volume 13097, 130972F (2024) https://doi.org/10.1117/12.3019282

KEYWORDS: Wavefront sensors, Point spread functions, Turbulence, Adaptive optics, Simulations, Phase retrieval, Sensors, Reconstruction algorithms, Wavefront errors, Thirty Meter Telescope

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Proceedings Article | 27 August 2024 Poster + Paper

Poster + Paper

Thirty Meter Telescope Laser Guide Star Facility preliminary design completion

M. Trubey, C. Boyer, L. Wang, B. Irarrazaval, J. Miles, K. Vogiatzis, A. Ebbers, F. Santoro

Proceedings Volume 13097, 130975B (2024) https://doi.org/10.1117/12.3021051

KEYWORDS: Telescopes, Design, Mirrors, Adaptive optics, Collimators, Safety, Laser systems engineering, Laser guide stars, Wavefront sensors, Optomechanical design, Astronomical adaptive optics, Optical systems engineering, Thirty Meter Telescope, Large telescopes

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Proceedings Article | 27 August 2024 Presentation + Paper

Presentation + Paper

NFIRAOS project update: preparing for construction

Jenny Atwood, Peter Byrnes, Jeffrey Crane, Joeleff Fitzsimmons, Glen Herriot, Krzysztof Caputa, Dan Kerley, Jordan Lothrop, Samuel Barrett, Kath Silversides, Malcolm Smith, Ivan Wevers, Erning Zhao, Adam Densmore, Kate Jackson, Olivier Lardiere, Jean-Pierre Veran, Jennifer Dunn, Corinne Boyer, Lianqi Wang, Emma Rautio-Roe, Margaret Hemphill

Proceedings Volume 13097, 1309720 (2024) https://doi.org/10.1117/12.3019178

KEYWORDS: Design, Wavefront sensors, Cameras, Prototyping, Carbon dioxide, Calibration, Mirrors, Telescopes, Relays, Adaptive optics

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Proceedings Article | 23 August 2024 Poster + Paper

Poster + Paper

The TMT International Observatory aerothermal performance estimation procedure

Konstantinos Vogiatzis, Doug MacMartin, Lianqi Wang, Gelys Trancho

Proceedings Volume 13099, 130992K (2024) https://doi.org/10.1117/12.3020241

KEYWORDS: Telescopes, Observatories, Thermal modeling, Computational fluid dynamics, Performance modeling, Image quality

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Proceedings Article | 23 August 2024 Poster + Paper

Poster + Paper

Aerothermal modeling of the TMT International Observatory Laser Guide Star Facility

Konstantinos Vogiatzis, Lianqi Wang, Melissa Trubey, Benjamin Irarrazaval, Corinne Boyer

Proceedings Volume 13099, 130992L (2024) https://doi.org/10.1117/12.3020264

KEYWORDS: Beam jitter, Observatories, Wavefront errors, Telescopes, Computational fluid dynamics, Thermal modeling

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SPIE Journal Paper | 14 February 2023

Simultaneous sodium profile estimation and LGS SH-WFS pixel processing optimization using LGS sub-aperture images

Lianqi Wang, Corinne Boyer, Brent Ellerbroek, Glen Herriot, Jean-Pierre Veran

JATIS, Vol. 9, Issue 01, 019002, (February 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.1.019002

KEYWORDS: Sodium, Wavefront sensors, Simulations, Electronic filtering, Adaptive optics, Tunable filters, Optical transfer functions, Turbulence, Image processing, Telescopes

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Image displacement pixel processing for laser guide star (LGS) Shack–Hartmann wavefront sensors (WFS) is often based upon a center of gravity with thresholding [thresholded CoG (tCoG)] algorithm. This method yields a nearly linear response to the sub-aperture wavefront gradient, but suffers from zero-point biases due to sodium profile variability and the resulting changes in the shape of the LGS sub-aperture images. This effect interacts with additional biases due to the image truncation caused by the limited field of view of the WFS sub-apertures, as well as from WFS non-common path aberration (NCPA). Natural guide star (NGS) truth wavefront sensors (TWFS) have been proposed to correct for the resulting aberrations in the reconstructed wave-front, and multiple such TWFS would be required to control anisoplanatism effects when there are multiple LGS. We describe a novel algorithm that estimates the sodium profile from time averaged sub-aperture images of one or multiple LGS using a system imaging model. This estimate can then be used to correct for the zero-point bias by adjusting the tCoG reference vector. This eliminates the need for an NGS TWFS to detect sodium profile induced aberrations, and a single TWFS with faint NGS would then be sufficient to monitor any variations in NCPA if needed, which greatly improves the sky coverage. The reconstructed sodium profile can also be used to build constrained matched filters, a noise-optimal alternative to tCoG that requires accurate knowledge of the sub-aperture LGS images and their spatial derivatives (and has yet to be demonstrated on sky). This new sodium profile reconstruction algorithm consequently eliminates the need for dithering LGS spots on sky to determine these derivatives, which greatly simplifies the implementation of matched filtering and also provides better performance. All of the necessary sodium profile estimation, bias computations, and matched filter optimizations can be done with a modern CPU (e.g., Intel Core i7-11700) at around a 0.1-Hz update rate as a background process for the real time controller. Our simulations of this new method are for center launch LGS, but we are confident the profile estimation algorithm will work equally well if not better for side launch LGS, even when there is increased image truncation.

Proceedings Article | 30 August 2022 Poster + Paper

Poster + Paper

TMT Laser Guide Star Facility preliminary design

M. Trubey, C. Boyer, B. Delabre, B. Irarrazaval, J. Miles, K. Vogiatzis, L. Wang, C. Jiang

Proceedings Volume 12185, 121857H (2022) https://doi.org/10.1117/12.2630542

KEYWORDS: Thirty Meter Telescope, Sodium guide stars, Beam expanders, Laser beam propagation, Mirrors, Telescopes, Adaptive optics, Electronics, Control systems, Beam splitters, Laser systems engineering, Laser safety, Laser guide stars

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Proceedings Article | 30 August 2022 Poster + Paper

Poster + Paper

The Infrared Imaging Spectrograph (IRIS) for TMT: achieving high sky coverage through the On-Instrument Wavefront Sensor design

David Andersen, Jenny Atwood, Jennifer Dunn, Jeffrey Crane, Brian Hoff, Ed Chapin, Glen Herriot, Tim Hardy, Lianqi Wang, James Larkin, Shelley Wright, Ryuji Suzuki, Robert Weber, Tim Greffe

Proceedings Volume 12185, 121855R (2022) https://doi.org/10.1117/12.2628668

KEYWORDS: IRIS Consortium, Monte Carlo methods, Wavefront sensors, Thirty Meter Telescope, Telescopes, Point spread functions

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Proceedings Article | 30 August 2022 Presentation + Paper

Presentation + Paper

Simultaneous sodium profile estimation and LGS WFS pixel processing optimization using Shack-Hartmann subaperture images

Lianqi Wang, Corinne Boyer, Brent Ellerbroek, Glen Herriot, Jean-Pierre Veran

Proceedings Volume 12185, 121851I (2022) https://doi.org/10.1117/12.2630596

KEYWORDS: Sodium, Image processing, Digital filtering, Wavefront sensors, Adaptive optics, Wavefronts, Monte Carlo methods, Reconstruction algorithms, Image segmentation, Algorithm development

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SPIE Journal Paper | 18 May 2022

Performance of a complementary metal-oxide-semiconductor sensor for laser guide star wavefront sensing

Zibo Ke, Felipe Pedreros Bustos, Jenny Atwood, Anne Costille, Kjetil Dohlen, Kacem El Hadi, Jean-Luc Gach, Glen Herriot, Zoltan Hubert, Pierre Jouve, Patrick Rabou, Jean-Pierre Veŕan, Lianqi Wang, Thierry Fusco, Benoît Neichel

JATIS, Vol. 8, Issue 02, 021511, (May 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.2.021511

KEYWORDS: Sensors, CMOS sensors, Wavefront sensors, Relays, Photons, Adaptive optics, Telescopes, Sodium, Optics manufacturing, Tolerancing

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Proceedings Article | 18 July 2018 Paper

Paper

Point spread function reconstruction simulations for laser guide star multi-conjugate adaptive optics on extremely large telescopes

L. Gilles, L. Wang, C. Boyer

Proceedings Volume 10703, 1070349 (2018) https://doi.org/10.1117/12.2315793

KEYWORDS: Point spread functions, Adaptive optics, Optical transfer functions, Actuators, Turbulence, Laser guide stars

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Proceedings Article | 17 July 2018 Paper

Paper

NFIRAOS adaptive optics for the Thirty Meter Telescope

Jeffrey Crane, Glen Herriot, David Andersen, Jenny Atwood, Peter Byrnes, Adam Densmore, Jennifer Dunn, Joeleff Fitzsimmons, Tim Hardy, Brian Hoff, Kate Jackson, Dan Kerley, Olivier Lardière, Malcolm Smith, Jonathan Stocks, Jean-Pierre Véran, Corinne Boyer, Lianqi Wang, Gelys Trancho, Melissa Trubey

Proceedings Volume 10703, 107033V (2018) https://doi.org/10.1117/12.2314341

KEYWORDS: Mirrors, Thirty Meter Telescope, Adaptive optics, Beam splitters, Telescopes, Stars, Calibration, Interfaces, Wavefront sensors, Sensors

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Proceedings Article | 10 July 2018 Presentation + Paper

Presentation + Paper

The Real-Time controller (RTC) for the Narrow Field Infrared Adaptive Optics System (NFIRAOS) for TMT final design

Jennifer Dunn, Dan Kerley, Malcolm Smith, Ed Chapin, Glen Herriot, Jean-Pierre Veran, Corinne Boyer, Lianqi Wang, Luc Gilles, Gelys Trancho

Proceedings Volume 10703, 1070317 (2018) https://doi.org/10.1117/12.2314226

KEYWORDS: Real-time computing, Adaptive optics, Control systems, Wavefronts, Wavefront sensors, Telescopes, Prototyping, Stars, Actuators, Laser guide stars

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Proceedings Article | 10 July 2018 Presentation + Paper

Presentation + Paper

Optimizing multi-LGS WFS AO performance in the context of sodium profile evolution and non-common path aberration

Lianqi Wang, Brent Ellerbroek, Glen Herriot, Jean-Pierre Véran, Corinne Boyer

Proceedings Volume 10703, 107032B (2018) https://doi.org/10.1117/12.2312873

KEYWORDS: Electronic filtering, Sodium, Adaptive optics, Wavefront sensors, Turbulence, Wavefronts, Sensors, Thirty Meter Telescope, Calibration, Device simulation

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Proceedings Article | 10 July 2018 Presentation + Paper

Presentation + Paper

Ground layer adaptive optics for the W. M. Keck Observatory: feasibility study

J. Lu, M. Chun, S. Ammons, K. Bundy, R. Dekany, T. Do, D. Gavel, M. Kassis, O. Lai, C. Martin, C. Max, C. Steidel, L. Wang, K. Westfall, P. Wizinowich

Proceedings Volume 10703, 107030N (2018) https://doi.org/10.1117/12.2314417

KEYWORDS: Telescopes, Image quality, Galactic astronomy, Adaptive optics, Spectrographs, Astronomical imaging, Keck Observatory, Point spread functions, Spectroscopy

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Proceedings Article | 6 July 2018 Presentation + Paper

Presentation + Paper

The Infrared Imaging Spectrograph (IRIS) for TMT: closed-loop adaptive optics while dithering

Edward Chapin, Jennifer Dunn, David Andersen, Glen Herriot, Dan Kerley, Takashi Nakamoto, Jimmy Johnson, Lianqi Wang, Gelys Trancho, Eric Chisholm, Brent Ellerbroek, Kim Gillies, Yutaka Hayano, James Larkin, Luc Simard, Mark Sirota, Ryuji Suzuki, Robert Weber, Shelley Wright, Kai Zhang

Proceedings Volume 10707, 107071E (2018) https://doi.org/10.1117/12.2312804

KEYWORDS: IRIS Consortium, Telescopes, Adaptive optics, Java, Control systems, Real-time computing, Motion controllers, Error analysis, Observatories, Wavefront sensors

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Proceedings Article | 8 August 2016 Paper

Paper

Thirty Meter Telescope (TMT) Narrow Field Infrared Adaptive Optics System (NFIRAOS) real-time controller preliminary architecture

Dan Kerley, Malcolm Smith, Jennifer Dunn, Glen Herriot, Jean-Pierre Véran, Corinne Boyer, Brent Ellerbroek, Luc Gilles, Lianqi Wang

Proceedings Volume 9913, 99134J (2016) https://doi.org/10.1117/12.2233709

KEYWORDS: Real-time computing, Thirty Meter Telescope, Telescopes, Adaptive optics, Wavefronts, Infrared telescopes, Data storage, Sensors, Stars, Signal processing

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Proceedings Article | 27 July 2016 Paper

Paper

The progress of TMT Laser Guide Star Facility

Min Li, Kai Wei, Jinlong Tang, Changchun Jiang, Muwen Fan, Feng Chen, Daoman Rui, Xiqi Li, Corinne Boyer, Lianqi Wang, Brent Ellerbroek, Hao Xian, Changhui Rao, Yudong Zhang

Proceedings Volume 9909, 99095Q (2016) https://doi.org/10.1117/12.2231987

KEYWORDS: Laser guide stars, Telescopes, Mirrors, Adaptive optics, Laser safety, Laser systems engineering, Prototyping, Laser guide stars, Telescopes, Laser systems engineering, Adaptive optics, Reflectivity, Polarization, Temperature metrology

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Proceedings Article | 27 July 2016 Paper

Paper

Thirty Meter Telescope narrow-field infrared adaptive optics system real-time controller prototyping results

Malcolm Smith, Dan Kerley, Edward Chapin, Jennifer Dunn, Glen Herriot, Jean-Pierre Véran, Corinne Boyer, Brent Ellerbroek, Luc Gilles, Lianqi Wang

Proceedings Volume 9909, 99094N (2016) https://doi.org/10.1117/12.2233711

KEYWORDS: Adaptive optics, Prototyping, Infrared telescopes, Thirty Meter Telescope, Adaptive optics, Infrared telescopes, Prototyping, Real-time computing, Wavefronts, Wavefront sensors, Actuators, Deformable mirrors, Data storage

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Proceedings Article | 26 July 2016 Paper

Paper

Solving the NFIRAOS calibration puzzle

Jean-Pierre Véran, Glen Herriot, David Andersen, Lianqi Wang

Proceedings Volume 9909, 99090L (2016) https://doi.org/10.1117/12.2233669

KEYWORDS: Stars, Calibration, Telescopes, Adaptive optics, Calibration, Adaptive optics, Sensors, IRIS Consortium, Cameras, Diffraction, Near infrared, Mirrors

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Proceedings Article | 6 August 2014 Paper

Paper

The Infrared Imaging Spectrograph (IRIS) for TMT: instrument overview

Anna Moore, James Larkin, Shelley Wright, Brian Bauman, Jennifer Dunn, Brent Ellerbroek, Andrew Phillips, Luc Simard, Ryuji Suzuki, Kai Zhang, Ted Aliado, George Brims, John Canfield, Shaojie Chen, Richard Dekany, Alex Delacroix, Tuan Do, Glen Herriot, Bungo Ikenoue, Chris Johnson, Elliot Meyer, Yoshiyuki Obuchi, John Pazder, Vladimir Reshetov, Reed Riddle, Sakae Saito, Roger Smith, Ji Man Sohn, Fumihiro Uraguchi, Tomonori Usuda, Eric Wang, Lianqi Wang, Jason Weiss, Robert Wooff

Proceedings Volume 9147, 914724 (2014) https://doi.org/10.1117/12.2055216

KEYWORDS: IRIS Consortium, Spectrographs, Imaging systems, Adaptive optics, Telescopes, Diffraction, Stars, Cryogenics, Astronomy, Thirty Meter Telescope

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Proceedings Article | 28 July 2014 Open Access

Open Access

Paper

The infrared imaging spectrograph (IRIS) for TMT: overview of innovative science programs

Shelley Wright, James Larkin, Anna Moore, Tuan Do, Luc Simard, Maté Adamkovics, Lee Armus, Aaron Barth, Elizabeth Barton, Hope Boyce, Jeffrey Cooke, Patrick Cote, Timothy Davidge, Brent Ellerbroek, Andrea Ghez, Michael Liu, Jessica Lu, Bruce Macintosh, Shude Mao, Christian Marois, Matthias Schoeck, Ryuji Suzuki, Jonathan Tan, Tommaso Treu, Lianqi Wang, Jason Weiss

Proceedings Volume 9147, 91479S (2014) https://doi.org/10.1117/12.2055599

KEYWORDS: IRIS Consortium, Galactic astronomy, Iterated function systems, Stars, Astronomy, Space telescopes, James Webb Space Telescope, Signal to noise ratio, Imaging systems, Spectroscopy

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Proceedings Article | 21 July 2014 Paper

Paper

Physical optics modeling of sky coverage for TMT NFIRAOS with advanced LQG controller

Lianqi Wang, Luc Gilles, Brent Ellerbroek, Carlos Correia

Proceedings Volume 9148, 91482J (2014) https://doi.org/10.1117/12.2056583

KEYWORDS: Turbulence, Telescopes, Adaptive optics, Stars, Device simulation, Filtering (signal processing), Infrared telescopes, Atmospheric turbulence, Wavefront sensors, Thirty Meter Telescope

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Proceedings Article | 21 July 2014 Paper

Paper

NFIRAOS: first facility AO system for the Thirty Meter Telescope

Glen Herriot, David Andersen, Jenny Atwood, Corinne Boyer, Peter Byrnes, Kris Caputa, Brent Ellerbroek, Luc Gilles, Alexis Hill, Zoran Ljusic, John Pazder, Matthias Rosensteiner, Malcolm Smith, Paolo Spano, Kei Szeto, Jean-Pierre Véran, Ivan Wevers, Lianqi Wang, Robert Wooff

Proceedings Volume 9148, 914810 (2014) https://doi.org/10.1117/12.2055525

KEYWORDS: Stars, Mirrors, Telescopes, Real-time computing, Adaptive optics, Actuators, Deformable mirrors, Beam splitters, Laser guide stars, Sensors

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Proceedings Article | 21 July 2014 Paper

Paper

Results of the NFIRAOS RTC trade study

Jean-Pierre Véran, Corinne Boyer, Brent Ellerbroek, Luc Gilles, Glen Herriot, Daniel Kerley, Zoran Ljusic, Eric McVeigh, Robert Prior, Malcolm Smith, Lianqi Wang

Proceedings Volume 9148, 91482F (2014) https://doi.org/10.1117/12.2057323

KEYWORDS: Real-time computing, Field programmable gate arrays, Adaptive optics, Reconstruction algorithms, Charge-coupled devices, Switches, Deformable mirrors, Wavefront sensors, Actuators, Reliability

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Proceedings Article | 21 July 2014 Paper

Paper

Thirty Meter Telescope astrometry error budget

Matthias Schöck, Tuan Do, Brent Ellerbroek, Luc Gilles, Glen Herriot, Leo Meyer, Ryuji Suzuki, Lianqi Wang, Sylvana Yelda

Proceedings Volume 9148, 91482L (2014) https://doi.org/10.1117/12.2057089

KEYWORDS: Stars, Distortion, Calibration, Error analysis, Atmospheric corrections, Refraction, Signal to noise ratio, Sensors, IRIS Consortium, Thirty Meter Telescope

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Proceedings Article | 21 July 2014 Paper

Paper

Kalman filter design for atmospheric tip/tilt, tip/tilt anisoplanatism and focus filtering on extremely large telescopes

L. Gilles, H. Raynaud, C. Correia, L. Wang, B. Ellerbroek, C. Boyer, C. Kulcsár

Proceedings Volume 9148, 91484L (2014) https://doi.org/10.1117/12.2057400

KEYWORDS: Filtering (signal processing), Adaptive optics, Error analysis, Atmospheric modeling, Performance modeling, Picosecond phenomena, Optical instrument design, Electronic filtering, Device simulation, Turbulence

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Proceedings Article | 21 July 2014 Paper

Paper

Adaptive optics program at TMT

C. Boyer, Sean Adkins, David Andersen, Jenny Atwood, Yong Bo, Peter Byrnes, Kris Caputa, Jeff Cavaco, Brent Ellerbroek, Luc Gilles, James Gregory, Glen Herriot, Paul Hickson, Zoran Ljusic, Darren Manter, Christian Marois, Angel Otárola, Hubert Pagès, Matthias Schoeck, Jean-Christophe Sinquin, Malcolm Smith, Paolo Spano, Kei Szeto, Jinlong Tang, Tony Travouillon, Jean-Pierre Véran, Lianqi Wang, Kai Wei

Proceedings Volume 9148, 91480X (2014) https://doi.org/10.1117/12.2056863

KEYWORDS: Adaptive optics, Prototyping, Telescopes, Laser guide stars, Wavefront sensors, Point spread functions, Sensors, Real-time computing, Algorithm development, Wavefronts

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Proceedings Article | 13 September 2012 Paper

Paper

TMT NFIRAOS: adaptive optics system for the Thirty Meter Telescope

Glen Herriot, David Andersen, Jenny Atwood, Peter Byrnes, Marc-André Boucher, Corinne Boyer, Kris Caputa, Carlos Correia, Jennifer Dunn, Brent Ellerbroek, Joeleff Fitzsimmons, Luc Gilles, Paul Hickson, Alexis Hill, Dan Kerley, John Pazder, Vlad Reshetov, Scott Roberts, Malcolm Smith, Jean-Pierre Véran, Lianqi Wang, Ivan Wevers

Proceedings Volume 8447, 84471M (2012) https://doi.org/10.1117/12.925087

KEYWORDS: Adaptive optics, Telescopes, Wavefront sensors, Field programmable gate arrays, Mirrors, Calibration, Laser guide stars, Actuators, Space telescopes, Thirty Meter Telescope

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Proceedings Article | 13 September 2012 Paper

Paper

Computer simulations and real-time control of ELT AO systems using graphical processing units

Lianqi Wang, Brent Ellerbroek

Proceedings Volume 8447, 844723 (2012) https://doi.org/10.1117/12.926500

KEYWORDS: Adaptive optics, Tomography, Computer simulations, Real-time computing, Device simulation, Wavefronts, Optical simulations, Reconstruction algorithms, Actuators, Thirty Meter Telescope

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Proceedings Article | 13 September 2012 Paper

Paper

Advanced control of low order modes in laser guide star multi-conjugate adaptive optics systems

Carlos Correia, Jean-Pierre Véran, Glen Herriot, Brent Ellerbroek, Lianqi Wang, Luc Gilles

Proceedings Volume 8447, 84471S (2012) https://doi.org/10.1117/12.926872

KEYWORDS: Adaptive optics, Thallium, Zernike polynomials, Laser guide stars, Device simulation, Signal to noise ratio, Stars, Atmospheric propagation, Thirty Meter Telescope, Sensors

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Proceedings Article | 13 September 2012 Paper

Paper

TMT DMs final design and advanced prototyping results at Cilas

Jean-Christophe Sinquin, Arnaud Bastard, Corinne Boyer, Sébastien Cornette, Raphaël Cousty, Brent Ellerbroek, Xavier Gilbert, Benoit Gourdet, Régis Grasser, Denis Groeninck, Claude Guillemard, Glen Herriot, Albert Iannacone, Antoine Jeulin, Aurélien Moreau, Hubert Pagès, Lianqi Wang

Proceedings Volume 8447, 844706 (2012) https://doi.org/10.1117/12.925313

KEYWORDS: Actuators, Promethium, Prototyping, Photovoltaics, Finite element methods, Adaptive optics, Optics manufacturing, Mirrors, Electrical breakdown, Thirty Meter Telescope

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Proceedings Article | 13 September 2012 Paper

Paper

TMT adaptive optics program status report

Brent Ellerbroek, Sean Adkins, David Andersen, Jenny Atwood, Arnaud Bastard, Yong Bo, Marc-Andre Boucher, Corinne Boyer, Peter W. Byrnes, Kris Caputa, Shanqiu Chen, Carlos Correia, Raphael Cousty, Joeleff Fitzsimmons, Luc Gilles, James Gregory, Glen Herriot, Paul Hickson, Alexis Hill, John Pazder, Hubert Pagès, Thomas Pfrommer, Vladimir Reshetov, Scott Roberts, Jean-Christophe Sinquin, Matthias Schoeck, Malcolm Smith, Jean-Pierre Véran, Lianqi Wang, Kai Wei, Ivan Wevers

Proceedings Volume 8447, 84471J (2012) https://doi.org/10.1117/12.927046

KEYWORDS: Adaptive optics, Laser guide stars, Telescopes, Prototyping, Sensors, Wavefronts, Electronics, Sodium, Laser systems engineering, Thirty Meter Telescope

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Proceedings Article | 1 September 2012 Paper

Paper

Tip/tilt point spread function reconstruction for laser guide star multi-conjugate adaptive optics

L. Gilles, C. Correia, J.-P. Véran, L. Wang, B. Ellerbroek

Proceedings Volume 8447, 844729 (2012) https://doi.org/10.1117/12.926928

KEYWORDS: Adaptive optics, Point spread functions, Stars, Wavefront sensors, Laser guide stars, Computer simulations, Optical transfer functions, Servomechanisms, Monte Carlo methods, Thirty Meter Telescope

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Proceedings Article | 10 November 2011 Paper

Paper

High fidelity optical modeling for the TMT

Carl Nissly, Byoung-Joon Seo, Mitchell Troy, George Angeli, Myung Cho, Brent Ellerbroek, Piotr Piatrou, Lewis Roberts, J. Shelton, Lianqi Wang

Proceedings Volume 8336, 83360B (2011) https://doi.org/10.1117/12.918708

KEYWORDS: Device simulation, Telescopes, Wavefronts, Adaptive optics, Mirrors, MATLAB, Error analysis, Systems modeling, Wavefront sensors, Sensors

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Proceedings Article | 21 July 2010 Paper

Paper

The Infrared Imaging Spectrograph (IRIS) for TMT: on-instrument wavefront sensors (OIWFS) and NFIRAOS interface

David Loop, Vlad Reshetov, Murray Fletcher, Robert Wooff, Jennifer Dunn, Anna Moore, Roger Smith, David Hale, Richard Dekany, Lianqi Wang, Brent Ellerbroek, Luc Simard, David Crampton

Proceedings Volume 7735, 77357Q (2010) https://doi.org/10.1117/12.857463

KEYWORDS: IRIS Consortium, Interfaces, Wavefront sensors, Sensors, Adaptive optics, Mirrors, Control systems, Stars, Imaging systems, Optical design

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Proceedings Article | 15 July 2010 Paper

Paper

Modeling update for the Thirty Meter Telescope laser guide star dual-conjugate adaptive optics system

Luc Gilles, Lianqi Wang, Brent Ellerbroek

Proceedings Volume 7736, 77360W (2010) https://doi.org/10.1117/12.858279

KEYWORDS: Adaptive optics, Telescopes, Device simulation, Wavefronts, Turbulence, Stars, Point spread functions, Tomography, Error analysis, Thirty Meter Telescope

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Proceedings Article | 14 July 2010 Paper

Paper

Impact of laser guide star fratricide on TMT MCAO system

Lianqi Wang, Angel Otarola, Brent Ellerbroek

Proceedings Volume 7736, 77360G (2010) https://doi.org/10.1117/12.857348

KEYWORDS: Scattering, Light scattering, Rayleigh scattering, Aerosols, Calibration, Geometrical optics, Atmospheric modeling, Ozone, Atmospheric particles, Thirty Meter Telescope

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Proceedings Article | 13 July 2010 Paper

Paper

First light adaptive optics systems and components for the Thirty Meter Telescope

Brent Ellerbroek, Sean Adkins, David Andersen, Jennifer Atwood, Steve Browne, Corinne Boyer, Peter Byrnes, Kris Caputa, Rodolphe Conan, Raphael Cousty, Daren Erikson, Joeleff Fitzsimmons, Frederick Gamache, Luc Gilles, Glen Herriot, Paul Hickson, Olivier Lardier, Pierre Morin, John Pazder, Thomas Pfrommer, David Quinn, Vladimir Reshetov, Scott Roberts, Jean-Christophe Sinquin, Matthias Schoeck, Malcolm Smith, Glenn Tyler, Jeff Vaughn, Jean-Pierre Veran, Curt Vogel, Lianqi Wang, Ivan Wevers

Proceedings Volume 7736, 773604 (2010) https://doi.org/10.1117/12.856503

KEYWORDS: Adaptive optics, Laser guide stars, Telescopes, Sensors, Distortion, Wavefront sensors, Space telescopes, Stars, Sodium, Wavefronts

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Proceedings Article | 13 July 2010 Paper

Paper

NFIRAOS: TMT's facility adaptive optics system

Glen Herriot, David Andersen, Jennifer Atwood, Corinne Boyer, Annie Beauvillier, Peter Byrnes, Rod Conan, Brent Ellerbroek, Joeleff Fitzsimmons, Luc Gilles, Paul Hickson, Alexis Hill, Kate Jackson, Olivier Lardière, John Pazder, Thomas Pfrommer, Vlad Reshetov, Scott Roberts, Jean-Pierre Véran, Lianqi Wang, Ivan Wevers

Proceedings Volume 7736, 77360B (2010) https://doi.org/10.1117/12.857662

KEYWORDS: Telescopes, Adaptive optics, Stars, Calibration, Wavefront sensors, Mirrors, Beam splitters, Visible radiation, Sensors, Sodium

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Proceedings Article | 15 July 2008 Paper

Paper

Evaluating sky coverage for the NFIRAOS tip/tilt control architecture

Lianqi Wang, Brent Ellerbroek, Jean-Pierre Véran, Jean-Christophe Sinquin

Proceedings Volume 7015, 70155X (2008) https://doi.org/10.1117/12.787975

KEYWORDS: Stars, Infrared sensors, Monte Carlo methods, Adaptive optics, Telescopes, Sensors, Mercury cadmium telluride, Infrared imaging, Wavefront sensors, Infrared radiation

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Proceedings Article | 10 July 2008 Paper

Paper

Wavefront error budget development for the Thirty Meter Telescope laser guide star adaptive optics system

Luc Gilles, Lianqi Wang, Brent Ellerbroek

Proceedings Volume 7015, 701520 (2008) https://doi.org/10.1117/12.786971

KEYWORDS: Adaptive optics, Telescopes, Wavefronts, Turbulence, Error analysis, Tomography, Device simulation, Monte Carlo methods, Sodium, Thirty Meter Telescope

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Proceedings Article | 10 July 2008 Paper

Paper

Status of the Thirty Meter Telescope site selection program

Matthias Schöck, Sebastian Els, Reed Riddle, Warren Skidmore, Tony Travouillon, Robert Blum, Edison Bustos, Paul Gillett, Brooke Gregory, Jerry Nelson, Angel Otarola, Juan Seguel, Joselino Vasquez, Konstantinos Vogiatzis, David Walker, Lianqi Wang

Proceedings Volume 7012, 70121X (2008) https://doi.org/10.1117/12.789704

KEYWORDS: Calibration, Temperature metrology, Telescopes, Observatories, Sensors, Turbulence, Astronomy, Clouds, Satellites, Thirty Meter Telescope

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Proceedings Article | 7 July 2008 Paper

Paper

Progress toward developing the TMT adaptive optical systems and their components

Brent Ellerbroek, Sean Adkins, David Andersen, Jenny Atwood, Corinne Boyer, Peter Byrnes, Rodolphe Conan, Luc Gilles, Glen Herriot, Paul Hickson, Ed Hileman, Dick Joyce, Brian Leckie, Ming Liang, Thomas Pfrommer, Jean-Christophe Sinquin, Jean-Pierre Veran, Lianqi Wang, Paul Welle

Proceedings Volume 7015, 70150R (2008) https://doi.org/10.1117/12.788057

KEYWORDS: Adaptive optics, Laser guide stars, Telescopes, Wavefront sensors, Wavefronts, Sodium, Stars, Control systems, Deformable mirrors, Prototyping

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Proceedings Article | 23 June 2006 Paper

Paper

High-accuracy DIMM measurements for the TMT site testing program

Lianqi Wang, Matthias Schöck, Gary Chanan, Warren Skidmore, Edison Bustos, Juan Seguel, Robert Blum

Proceedings Volume 6267, 62671S (2006) https://doi.org/10.1117/12.673025

KEYWORDS: Telescopes, Turbulence, Nickel, Stars, Optical alignment, Motion measurement, Calibration, Charge-coupled devices, Data acquisition, Thirty Meter Telescope

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Showing 5 of 47 publications

Conference Committee Involvement (1)

Adaptive Optics Systems IX

16 June 2024 | Yokohama, Japan

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