Prof. Tuan Do Profile

Prof. Tuan Do

Res at Univ of California Los Angeles

SPIE Involvement:

Author

Publications (31)

Proceedings Article | 5 October 2023 Presentation + Paper

Presentation + Paper

The development of HISPEC for Keck and MODHIS for TMT: science cases and predicted sensitivities

Quinn Konopacky, Ashley Baker, Dimitri Mawet, Michael Fitzgerald, Nemanja Jovanovic, Charles Beichman, Garreth Ruane, Rob Bertz, Hiroshi Terada, Richard Dekany, Larry Lingvay, Marc Kassis, David Anderson, Motohide Tamura, Björn Benneke, Thomas Beatty, Tuan Do, Shogo Nishiyama, Peter Plavchan, Jason Wang, Ji Wang, Adam Burgasser, Jean-Baptiste Ruffio, Huihao Zhang, Aaron Brown, Jason Fucik, Aidan Gibbs, Rose Gibson, Sam Halverson, Christopher Johnson, Sonia Karkar, Takayuki Kotani, Evan Kress, Stephanie Leifer, Kenneth Magnone, Jerome Maire, Rishi Pahuja, Michael Porter, Mitsuko Roberts, Ben Sappey, Jim Thorne, Eric Wang, Etienne Artigau, Geoffrey Blake, Gabriela Canalizo, Guo Chen, Greg Doppmann, René Doyon, Courtney Dressing, Min Fang, Thomas Greene, Greg Herczeg, Lynne Hillenbrand, Andrew Howard, Stephen Kane, Tiffany Kataria, Eliza Kempton, Heather Knutson, David Lafrenière, Chao Liu, Stanimir Metchev, Max Millar-Blanchaer, Norio Narita, Gajendra Pandey, S.P. Rajaguru, Paul Robertson, Colette Salyk, Bun'ei Sato, Evertt Schlawin, Sujan Sengupta, Thirupathi Sivarani, Warren Skidmore, Gautam Vasisht, Chikako Yasui, Hui Zhang

Proceedings Volume 12680, 1268007 (2023) https://doi.org/10.1117/12.2681522

KEYWORDS: Planets, Stars, Exoplanets, Spectrographs, Atmospheres, Spectroscopy, Telescopes

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SPIE Journal Paper | 2 March 2023 Open Access

Open Access

AIROPA IV: Validating point spread function reconstruction on various science cases

Sean Terry, Jessica Lu, Paolo Turri, Anna Ciurlo, Abhimat Gautam, Tuan Do, Michael Fitzgerald, Andrea Ghez, Matthew Hosek, Gunther Witzel

JATIS, Vol. 9, Issue 01, 018003, (March 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.1.018003

KEYWORDS: Point spread functions, Stars, Astrometry, Photometry, Adaptive optics, Optical transfer functions, Data modeling, Distortion, Atmospheric modeling, Equipment

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SPIE Journal Paper | 27 September 2022

AIROPA II: modeling instrumental aberrations for off-axis point spread functions in adaptive optics

Anna Ciurlo, Paolo Turri, Gunther Witzel, Jessica Lu, Tuan Do, Breann Sitarski, Michael Fitzgerald, Andrea Ghez, Carlos Alvarez, Sean Terry, Greg Doppmann, James Lyke, Sam Ragland, Randall Campbell, Keith Matthews

JATIS, Vol. 8, Issue 03, 038007, (September 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.3.038007

KEYWORDS: Point spread functions, Adaptive optics, Instrument modeling, Sensors, Data modeling, Wavefronts, Calibration, Telescopes, Atmospheric modeling, Phase measurement

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Proceedings Article | 7 September 2022 Poster + Paper

Poster + Paper

Evaluating the performance of the Keck Observatory adaptive optics systems on crowded field data using different adaptive optics configurations

Devin Chu, Wenmeng Ning, Tuan Do, Andrea Ghez, Peter Wizinowich, Jessica Lu, Abhimat Gautam, Anna Ciurlo, Sean Terry, Jim Lyke, Jacques Delorme

Proceedings Volume 12185, 1218545 (2022) https://doi.org/10.1117/12.2629035

KEYWORDS: Stars, Adaptive optics, Infrared imaging, Spectroscopy, Infrared telescopes, Imaging spectroscopy, Signal to noise ratio, Telescopes, Infrared spectroscopy, Sensors

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Proceedings Article | 30 August 2022 Presentation + Paper

Presentation + Paper

Keck All sky Precision Adaptive optics program overview

P. Wizinowich, J. Lu, S. Cetre, J. Chin, C. Correia, J.-R. Delorme, L. Gers, S. Lilley, J. Lyke, E. Marin, S. Ragland, P. Richards, A. Surendran, E. Wetherell, C.-F. Chen, D. Chu, T. Do, C. Fassnacht, M. Freeman, A. Gautam, A. Ghez, L. Hunter, T. Jones, M. Liu, D. Mawet, C. Max, M. Morris, M. Phillips, J.-B. Ruffio, N.-E. Rundquist, S. Sabhlok, S. Terry, T. Treu, S. Wright

Proceedings Volume 12185, 121850Q (2022) https://doi.org/10.1117/12.2628275

KEYWORDS: Adaptive optics, Telescopes, Tomography, Real-time computing, Sensors, Calibration, Point spread functions, Device simulation, Turbulence, Mirrors

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Proceedings Article | 29 August 2022 Presentation + Paper

Presentation + Paper

Fiber-fed high-resolution infrared spectroscopy at the diffraction limit with Keck-HISPEC and TMT-MODHIS: status update

Dimitri Mawet, Michael Fitzgerald, Quinn Konopacky, Nemanja Jovanovic, Ashley Baker, Charles Beichman, Rob Bertz, Richard Dekany, Jason Fucik, Mitsuko Roberts, Michael Porter, Rishi Pahuja, Garreth Ruane, Stephanie Leifer, Samuel Halverson, Aidan Gibbs, Chris Johnson, Evan Kress, Kenneth Magnone, Ji Man Sohn, Eric Wang, Aaron Brown, Jerome Maire, Ben Sappey, David Andersen, Hiroshi Terada, Marc Kassis, Etienne Artigau, Bjorn Benneke, Rene Doyon, Takayuki Kotani, Motohide Tamura, Thomas Beatty, Peter Plavchan, Tuan Do, Shogo Nishiyama, Jason Wang, Ji Wang

Proceedings Volume 12184, 121841R (2022) https://doi.org/10.1117/12.2630142

KEYWORDS: Planets, Exoplanets, Stars, Spectrographs, Spectroscopy, Spectral resolution, Adaptive optics, Single mode fibers, Infrared spectroscopy, Telescopes

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Proceedings Article | 29 August 2022 Poster + Paper

Poster + Paper

Concept for calibration of OSIRIS with a Fabry-Pérot etalon

Ronald López, Caroline von Raesfeld, Michael Fitzgerald, Tuan Do

Proceedings Volume 12184, 121845O (2022) https://doi.org/10.1117/12.2629505

KEYWORDS: Fabry–Perot interferometers, Point spread functions, Calibration, Reflectivity, Spectral calibration, Tolerancing, Refractive index, Manufacturing, Spectrographs, Lamps

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Proceedings Article | 29 August 2022 Poster

Poster

AIROPA: Off-axis adaptive optics PSF reconstruction in simulation, on-bench, and on-sky.

Jessica Lu, Sean Terry, Paolo Turri, Anna Ciurlo, Abhimat Gautam, Tuan Do, Andrea Ghez, Matthew Hosek, Gunther Witzel

Proceedings Volume 12185, 121853Y (2022) https://doi.org/10.1117/12.2630629

KEYWORDS: Point spread functions, Adaptive optics, Stars, Instrument modeling, Device simulation, Calibration, Atmospheric turbulence, Atmospheric modeling, Telescopes, Photometry

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SPIE Journal Paper | 21 July 2022

AIROPA III: testing simulated and on-sky data

Paolo Turri, Jessica Lu, Gunther Witzel, Anna Ciurlo, Tuan Do, Andrea Ghez, Michael Fitzgerald, Matthew Britton, Sam Ragland, Sean Terry

JATIS, Vol. 8, Issue 03, 039002, (July 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.3.039002

KEYWORDS: Point spread functions, Stars, Adaptive optics, Optical transfer functions, Device simulation, Atmospheric modeling, Telescopes, Calibration, Modulation transfer functions, Photometry

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SPIE Journal Paper | 30 May 2022

Analyzing long-term performance of the Keck-II adaptive optics system

Emily Ramey, Jessica Lu, Ruoyi Yin, Steve Robinson, Peter Wizinowich, Sam Ragland, Jim Lyke, Siyao Jia, Shoko Sakai, Abhimat Gautam, Tuan Do, Matthew Hosek, Andrea Ghez, Mark Morris, Eric Becklin, Keith Matthews

JATIS, Vol. 8, Issue 02, 028004, (May 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.2.028004

KEYWORDS: Adaptive optics, Image quality, Telescopes, Domes, Mirrors, Turbulence, Data modeling, Detection and tracking algorithms, Stars, Laser guide stars

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We present an analysis of the long-term performance of the W. M. Keck observatory laser guide star adaptive optics (LGS-AO) system and explore factors that influence the overall AO performance most strongly. Astronomical surveys can take years or decades to finish, so it is worthwhile to characterize the AO performance on such timescales in order to better understand future results. The Keck telescopes have two of the longest-running LGS-AO systems in use today, and as such they represent an excellent test-bed for processing large amounts of AO data. We use a Keck-II near infrared camera 2 (NIRC2) LGSAO surve of the Galactic Center (GC) from 2005 to 2019 for our analysis, combining image metrics with AO telemetry files, multiaperture scintillation sense/differential imaging motion monitor turbulence profiles, seeing information, weather data, and temperature readings in a compiled dataset to highlight areas of potential performance improvement. We find that image quality trends downward over time, despite multiple improvements made to Keck-II and its AO system, resulting in a 9 mas increase in the average full width at half maximum (FWHM) and a 3% decrease in the average Strehl ratio over the course of the survey. Image quality also trends upward with ambient temperature, possibly indicating the presence of uncorrected turbulence in the beam path. Using nine basic features from our dataset, we train a simple machine learning (ML) algorithm to predict the delivered image quality of NIRC2 given current atmospheric conditions, which could eventually be used for real-time observation planning and exposure time adjustments. A random forest algorithm trained on this data can predict the Strehl ratio of an image to within 18% and the FWHM to within 7%, which is a solid baseline for future applications involving more advanced ML techniques. The assembled dataset and coding tools are released to the public as a resource for testing new predictive control and point spread function-reconstruction algorithms.

Proceedings Article | 17 December 2020 Poster + Paper

Poster + Paper

The Infrared Imaging Spectrograph (IRIS) for TMT: final design development of the data reduction system

Arun Surya, Andrea Zonca, Nils-Erik Rundquist, Shelley Wright, Gregory Walth, David Anderson, Edward Chapin, Eric Chisholm, Tuan Do, Jennifer Dunn, Kim Gillies, Yutaka Hayano, Christopher Johnson, Renate Kupke, James Larkin, Takashi Nakamoto, Reed Riddle, Roger Smith, Ryuji Suzuki, Ji Man Sohn, Robert Weber, Jason Weiss, Kai Zhang

Proceedings Volume 11452, 114521K (2020) https://doi.org/10.1117/12.2561766

KEYWORDS: IRIS Consortium, Thirty Meter Telescope, Imaging systems, Infrared Imaging Spectrograph, Algorithm development, Iterated function systems, Infrared telescopes, Computer simulations, Spectrographs, Optical instrument design

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Proceedings Article | 14 December 2020 Poster + Paper

Poster + Paper

Analyzing long-term performance of the Keck-II adaptive optics system

Emily Ramey, Jessica Lu, Ruoyi Yin, Steve Robinson, Peter Wizinowich, Sam Ragland, Jim Lyke, Siyao Jia, Shoko Sakai, Abhimat Gautam, Tuan Do, Matthew Hosek, Andrea Ghez, Mark Morris, Eric Becklin, Keith Matthews

Proceedings Volume 11448, 1144859 (2020) https://doi.org/10.1117/12.2563252

KEYWORDS: Adaptive optics, Image quality, Keck Observatory, Stars, Analytical research, Turbulence, Data centers, Machine learning

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Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

Keck all sky precision adaptive optics

P. Wizinowich, J. Chin, C. Correia, J. Lu, T. Brown, K. Casey, S. Cetre, J.-R. Delorme, L. Gers, L. Hunter, S. Lilley, S. Ragland, A. Surendran, E. Wetherell, A. Ghez, T. Do, T. Jones, M. Liu, D. Mawet, C. Max, M. Morris, T. Treu, S. Wright

Proceedings Volume 11448, 114480E (2020) https://doi.org/10.1117/12.2560017

KEYWORDS: Adaptive optics, Point spread functions, Imaging spectroscopy, Sensing systems, Image quality, Tomography, Field spectroscopy, Imaging systems, Laser development, Wavefront sensors

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

The InfraRed Imaging Spectrograph (IRIS) for TMT: photometric characterization of anisoplanatic PSFs and testing of PSF-Reconstruction via AIROPA

Nils-Erik Rundquist, Shelley Wright, Matthias Schöck, Arun Surya, Jessica Lu, Paolo Turri, Edward Chapin, Eric Chisholm, Tuan Do, Jennifer Dunn, Andrea Ghez, Yutaka Hayano, Chris Johnson, James Larkin, Reed Riddle, Ji Man Sohn, Ryuji Suzuki, Gregory Walth, Andrea Zonca

Proceedings Volume 11447, 114472Z (2020) https://doi.org/10.1117/12.2562773

KEYWORDS: Point spread functions, IRIS Consortium, Thirty Meter Telescope, Infrared Imaging Spectrograph, Adaptive optics, Imaging systems, Monte Carlo methods, Infrared telescopes, Iterated function systems, Device simulation

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Proceedings Article | 13 December 2020 Presentation

Presentation

PSF reconstruction for integral field spectrographs

Anna Ciurlo, Tuan Do, Gunther Witzel, Jessica Lu, Paolo Turri, Michael Fitzgerald, Jim Lyke, Carlos Correia, Juan Carlos Guerra

Proceedings Volume 11448, 114480C (2020) https://doi.org/10.1117/12.2563124

KEYWORDS: Point spread functions, Spectrographs, Imaging systems, Adaptive optics, Stars, Algorithm development, Reconstruction algorithms, Iterated function systems, Galactic astronomy, Keck Observatory

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Proceedings Article | 16 July 2018 Paper

Paper

The InfraRed Imaging Spectrograph (IRIS) for TMT: photometric precision and ghost analysis

Nils Rundquist, Gregory Walth, Shelley Wright, Ryuji Suzuki, Tuan Do, Edward Chapin, Eric Chisholm, Jennifer Dunn, Yutaka Hayano, Chris Johnson, James Larkin, Reed Riddle, Matthias Schoeck, Ji Man Sohn

Proceedings Volume 10702, 10702A7 (2018) https://doi.org/10.1117/12.2314258

KEYWORDS: IRIS Consortium, Photometry, Imaging systems, Signal to noise ratio, Optical filtering, Point spread functions, Error analysis, Thirty Meter Telescope

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Proceedings Article | 10 July 2018 Open Access

Open Access

Presentation + Paper

Point-spread function reconstruction for integral-field spectrograph data

Tuan Do, Anna Ciurlo, Gunther Witzel, Jessica Lu, Paolo Turri, Michael Fitzgerald, Randy Campbell, Jim Lyke, Andrea Ghez

Proceedings Volume 10703, 107030I (2018) https://doi.org/10.1117/12.2314216

KEYWORDS: Point spread functions, Imaging systems, Stars, Spectrographs, Signal to noise ratio, Adaptive optics, Atmospheric modeling, Data modeling, Astronomy

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Proceedings Article | 10 July 2018 Paper

Paper

The Infrared Imaging Spectrograph (IRIS) for TMT: advancing the data reduction system

Gregory Walth, Shelley Wright, Nils-Erik Rundquist, David Andersen, Edward Chapin, Eric Chisholm, Tuan Do, Jennifer Dunn, Brent Ellerbroek, Kim Gillies, Yutaka Hayano, Chris Johnson, James Larkin, Takashi Nakamoto, Reed Riddle, Luc Simard, Roger Smith, Ryuji Suzuki, Ji Man Sohn, Robert Weber, Jason Weiss, Kai Zhang

Proceedings Volume 10707, 1070731 (2018) https://doi.org/10.1117/12.2314228

KEYWORDS: IRIS Consortium, Imaging systems, Thirty Meter Telescope, Infrared Imaging Spectrograph, Iterated function systems, Sensors, Infrared telescopes, Optical filters, Image filtering, Point spread functions

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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 | 10 July 2018 Open Access

Open Access

Presentation + Paper

Off-axis PSF reconstruction for integral field spectrograph: instrumental aberrations and application to Keck/OSIRIS data

Anna Ciurlo, Tuan Do, Gunther Witzel, Jessica Lu, Jim Lyke, Michael Fitzgerald, Andrea Ghez, Randall Campbell, Paolo Turri

Proceedings Volume 10703, 107031O (2018) https://doi.org/10.1117/12.2314291

KEYWORDS: Point spread functions, Imaging systems, Stars, Spectrographs, Data modeling, Signal to noise ratio, Adaptive optics, Atmospheric modeling

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Proceedings Article | 6 July 2018 Presentation + Paper

Presentation + Paper

Innovations and advances in instrumentation at the W. M. Keck Observatory

Marc Kassis, Dwight Chan, Shui Kwok, Tomas Krasuski, James Lyke, Sam Ragland, Scott Lilley, Sylvain Cetre, Peter Wizinowich, Hilton Lewis, Percy Gomez, Luca Rizzi, James Larkin, Tuan Do, Michael Fitzgerald, Andy Skemer, J. Xavier Prochaska, Kyle Westfall, Ben Mazin, Dimitri Mawet, Keith Matthews, Christopher Martin, Andrew Howard, Jessica Lu, Mark Chun

Proceedings Volume 10702, 1070207 (2018) https://doi.org/10.1117/12.2312316

KEYWORDS: Adaptive optics, Telescopes, Spectrographs, Sensors, Spectroscopy, Optical fibers, Observatories, Imaging systems, Control systems, Mirrors

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Proceedings Article | 2 September 2016 Open Access

Open Access

Paper

The AIROPA software package: milestones for testing general relativity in the strong gravity regime with AO

Gunther Witzel, Jessica Lu, Andrea Ghez, Gregory Martinez, Michael Fitzgerald, Matthew Britton, Breann Sitarski, Tuan Do, Randall Campbell, Maxwell Service, Keith Matthews, Mark Morris, E. Becklin, Peter Wizinowich, Sam Ragland, Greg Doppmann, Chris Neyman, James Lyke, Marc Kassis, Luca Rizzi, Scott Lilley, Rachel Rampy

Proceedings Volume 9909, 99091O (2016) https://doi.org/10.1117/12.2233872

KEYWORDS: Point spread functions, Adaptive optics, Photometry, General relativity, Sensors, Data modeling, Stars, Optical transfer functions, Atmospheric modeling, Instrument modeling

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Proceedings Article | 8 August 2016 Paper

Paper

The Infrared Imaging Spectrograph (IRIS) for TMT: data reduction system

Gregory Walth, Shelley Wright, Jason Weiss, James Larkin, Anna Moore, Edward Chapin, Tuan Do, Jennifer Dunn, Brent Ellerbroek, Kim Gillies, Yutaka Hayano, Chris Johnson, Daniel Marshall, Reed Riddle, Luc Simard, Ji Man Sohn, Ryuji Suzuki, James Wincentsen

Proceedings Volume 9913, 99134A (2016) https://doi.org/10.1117/12.2233076

KEYWORDS: Astronomy, IRIS Consortium, Imaging systems, Calibration, Iterated function systems, Visualization, Sensors, Optical filters, Spectrographs, Image filtering

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Proceedings Article | 26 July 2016 Open Access

Open Access

Paper

Point spread function determination for Keck adaptive optics

S. Ragland, L. Jolissaint, P. Wizinowich, M. van Dam, L. Mugnier, A. Bouxin, J. Chock, S. Kwok, J. Mader, G. Witzel, Tuan Do, M. Fitzgerald, A. Ghez, J. Lu, G. Martinez, M. Morris, B. Sitarski

Proceedings Volume 9909, 99091P (2016) https://doi.org/10.1117/12.2231814

KEYWORDS: Point spread functions, Adaptive optics, Stars, Point spread functions, Adaptive optics, Stars, Telescopes, Wavefronts, Reconstruction algorithms, Algorithm development, Space telescopes, Neodymium, Mirrors

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Proceedings Article | 26 July 2016 Open Access

Open Access

Paper

The infrared imaging spectrograph (IRIS) for TMT: latest science cases and simulations

Shelley Wright, Gregory Walth, Tuan Do, Daniel Marshall, James Larkin, Anna Moore, Mate Adamkovics, David Andersen, Lee Armus, Aaron Barth, Patrick Cote, Jeff Cooke, Eric Chisholm, Timothy Davidge, Jennifer Dunn, Christophe Dumas, Brent Ellerbroek, Andrea Ghez, Lei Hao, Yutaka Hayano, Michael Liu, Enrique Lopez-Rodriguez, Jessica Lu, Shude Mao, Christian Marois, Shashi Pandey, Andrew Phillips, Matthias Schoeck, Annapurni Subramaniam, Smitha Subramanian, Ryuji Suzuki, Jonathan Tan, Tsuyoshi Terai, Tommaso Treu, Luc Simard, Jason Weiss, James Wincentsen, Michael Wong, Kai Zhang

Proceedings Volume 9909, 990905 (2016) https://doi.org/10.1117/12.2233182

KEYWORDS: IRIS Consortium, Iterated function systems, Imaging systems, Device simulation, Galactic astronomy, Astronomy, Stars, Signal to noise ratio, Pluto, Eye models

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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

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 | 13 September 2012 Open Access

Open Access

Paper

Modeling anisoplanatism in the Keck II laser guide star AO system

Michael Fitzgerald, Gunther Witzel, Matthew Britton, Andrea Ghez, Leo Meyer, Breann Sitarski, Carina Cheng, Eric Becklin, Randall Campbell, Tuan Do, Jessica Lu, Keith Matthews, Mark Morris, Christopher Neyman, Glenn Tyler, Peter Wizinowich, Sylvana Yelda

Proceedings Volume 8447, 844724 (2012) https://doi.org/10.1117/12.926700

KEYWORDS: Stars, Point spread functions, Adaptive optics, Laser guide stars, Electroluminescent displays, Optical transfer functions, Atmospheric modeling, Wavefronts, Atmospheric turbulence, Phase measurement

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Proceedings Article | 13 September 2012 Open Access

Open Access

Paper

Adaptive optics observations of the galactic center young stars

S. Yelda, A. Ghez, J. Lu, T. Do, L. Meyer, M. Morris

Proceedings Volume 8447, 84470A (2012) https://doi.org/10.1117/12.927217

KEYWORDS: Stars, Adaptive optics, Speckle, Error analysis, Galactic astronomy, Kinematics, Point spread functions, Spatial resolution, Lutetium, Speckle imaging

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Proceedings Article | 28 July 2010 Open Access

Open Access

Paper

Recent results and perspectives for precision astrometry and photometry with adaptive optics

Jessica Lu, Andrea Ghez, Sylvana Yelda, Tuan Do, Will Clarkson, Nate McCrady, Mark Morris

Proceedings Volume 7736, 77361I (2010) https://doi.org/10.1117/12.859737

KEYWORDS: Adaptive optics, Stars, Point spread functions, Photometry, Spatial resolution, Telescopes, Atmospheric modeling, Infrared telescopes, Infrared imaging, Infrared radiation

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Showing 5 of 31 publications

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