Dr. James E. Lyke Profile

Dr. James E. Lyke

Observing Support Manager at WM Keck Observatory

SPIE Involvement:

Author

Publications (44)

Proceedings Article | 18 September 2024 Poster + Paper

Poster + Paper

On-sky tests of an upgraded holographic mask in the OSIRIS imager

Eric Exley, Steph Sallum, Peyton Benac, David Doelman, Michael Fitzgerald, Michael Liu, Jim Lyke, Frans Snik, Peter Tuthill, Joost Wardenier, Peter Wizinowich

Proceedings Volume 13095, 130952U (2024) https://doi.org/10.1117/12.3029442

KEYWORDS: Visibility, Stars, Point spread functions, Interferograms, Calibration, Imaging systems, Image quality, Liquid crystals, Holography, Data modeling

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Proceedings Article | 27 August 2024 Poster + Paper

Poster + Paper

A quarter century of adaptive optics science operations at Keck Observatory

James Lyke

Proceedings Volume 13097, 1309770 (2024) https://doi.org/10.1117/12.3018564

KEYWORDS: Adaptive optics, Keck Observatory, Telescopes, Observatories, Observational astronomy, Laser guide stars, Engineering, Systems modeling, Spatial resolution

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Proceedings Article | 27 August 2024 Poster + Paper

Poster + Paper

Enabling the next generation of Keck AO with the real time controller upgrade

Eduardo Marin, Jason C. Chin, Sylvain Cetre, Peter Wizinowich, Sam Ragland, Ed Wetherell, Avinash Surendran, Antonin Bouchez, Jacques-Robert Delorme, Scott Lilley, James Lyke, Maxwell Service, Kevin Tsubota, Carlos Correia, Marcos van Dam, Roberto Biasi, Christian Patauner, Dietrich Pescoller, Karl Glazebrook, Andrew Jameson, Will Gauvin, Francois Rigaut, Damien Gratadour, Julien Bernard

Proceedings Volume 13097, 1309760 (2024) https://doi.org/10.1117/12.3016792

KEYWORDS: Real-time computing, Adaptive optics, Cameras, Wavefront sensors, CCD cameras, Keck Observatory, Computer hardware, Telescopes, Telecommunications, Field programmable gate arrays

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Proceedings Article | 27 August 2024 Presentation + Paper

Presentation + Paper

Adaptive optics at W. M. Keck Observatory

P. Wizinowich, A. Bouchez, E. Marin, S. Cetre, J. Chin, C. Correia, M. van Dam, J.-R. Delorme, L. Gers, C. Guthery, S. Karkar, S. Kwok, S. Lilley, J. Lyke, P. Richards, M. Service, J. Steiner, A. Surendran, K. Tsubota, E. Wetherell, M. Bottom, R. Dekany, A. Ghez, P. Hinz, M. Liu, J. Lu, R. Jensen-Clem, M. Millar-Blanchaer, E. Peretz, S. Sallum, T. Treu, S. Wright

Proceedings Volume 13097, 130970K (2024) https://doi.org/10.1117/12.3017853

KEYWORDS: Adaptive optics, Wavefront sensors, Telescopes, Wavefront errors, Deformable mirrors, Cameras, Tomography

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Proceedings Article | 26 August 2024 Poster + Paper

Poster + Paper

Design of a precision cryogenic rotary stage for optic or mask selection for the SCALES instrument mounted to the Keck 2 Telescope

C. Ratliff, N. MacDonald, J. Cabak, W. Deich, D. Sandford, M. Gonzales, A. Skemer, S. Sallum, D. Stelter, A. Hunter, R. Kupke, D. Dillon, D. Marques, C. Rodriguez, M. Savage, M. Kassis, J. Lyke, A. Hasan

Proceedings Volume 13100, 131006X (2024) https://doi.org/10.1117/12.3020421

KEYWORDS: Design, Mirrors, Optical surfaces, Cryogenics, Aluminum, Mirror surfaces, Telescopes, Equipment, Finite element methods, Vacuum

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Proceedings Article | 31 July 2024 Presentation + Paper

Presentation + Paper

Liger at W.M. Keck Observatory: overall design and science drivers

Shelley Wright, Tucker Jones, James Larkin, Renate Kupke, Marc Kassis, Aaron Brown, David Andersen, Lee Armus, Bryson Cale, Maren Cosens, Devin Chu, Tuan Do, Chris Fassnacht, Deanne Fisher, Michael Fitzgerald, Andrea Ghez, Jenny Greene, Takeru Hayashi, Aurélien Hees, Jessie Hirtenstein, Chris Johnson, Jacqueline Keane, Patrick Kelly, Evan Kirby, Theodara Karalidi, Quinn Konopacky, Evan Kress, Jessica Lu, Jim Lyke, Kenneth Magnone, Jérôme Maire, Rosalie McGurk, Anne Medling, Maxwell Millar-Blanchaer, Quinn Minor, Reston Nash, Anna Nierenberg, Naveen Reddy, Michael Rich, Jean-Baptiste Ruffio, Nils-Erik Rundquist, Sanchit Sabhlok, David Sand, Ryan Sanders, Karin Sandstrom, Alice Shapley, Ji-Man Sohn, Arun Surya, Tommaso Treu, Eric Wang, Kanaka Warad, Robert Weber, James Wiley, Peter Wizinowich, Michael Wong, Sherry Yeh

Proceedings Volume 13096, 130960G (2024) https://doi.org/10.1117/12.3020803

KEYWORDS: Iterated function systems, Adaptive optics, Imaging systems, Design, Spectrographs, Sensors, Equipment, Infrared Imaging Spectrograph, Galactic astronomy, Spectral resolution

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Proceedings Article | 22 July 2024 Presentation + Paper

Presentation + Paper

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

Marc Kassis, Carlos Alvarez, Ashley Baker, Jeb Bailey, Ravinder Banyal, Robert Bertz, Charles Beichman, Antonin Bouchez, Aaron Brown, Matthew Brown, Kevin Bundy, Randall Campbell, Mark Chun, Jeff Cooke, William Deich, Richard Dekany, Greg Doppmann, Christopher Fassnacht, Jocelyn Ferrara, Michael Fitzgerald, Christoffer Fremling, Jason Fucik, Steven Gibson, Peter Gillingham, Karl Glazebrook, Timothee Greffe, Samuel Halverson, Grant Hill, Lynne Hillenbrand, Philip Hinz, Bradford Holden, Andrew Howard, Daniel Huber, Tucker Jones, Carolyn Jordan, Nemanja Jovanovic, Isabell Kain, Mansi Kasliwal, Evan Kirby, Quinn Konopacky, Shanti Krishnan, Shri Kulkarni, Renate Kupke, Kyle Lanclos, James Larkin, Scott Lilley, Larry Lingvay, Jessica Lu, James Lyke, Nicholas MacDonald, Christopher Martin, John Mather, Mateusz Matuszewski, Dimitri Mawet, Rosalie McGurk, Eduardo Marin, Bob Meeks, Maxwell Millar-Blanchaer, Reston Nash, James Neill, John O'Meara, Rishi Pahuja, Eliad Peretz, Nikolaus Prusinski, Matthew Radovan, Kodi Rider, Mitsuko Roberts, Connie Rockosi, Ryan Rubenzahl, Stephanie Sallum, Dale Sandford, Maureen Savage, Andy Skemer, Roger Smith, Charles Steidel, Jonathan Steiner, Deno Stelter, Josh Walawender, Kyle Westfall, Peter Wizinowich, Shelley Wright, Truman Wold, Jake Zimmer

Proceedings Volume 13096, 1309606 (2024) https://doi.org/10.1117/12.3016181

KEYWORDS: Equipment, Adaptive optics, Design, Observatories, Spectrographs, Imaging systems, Sensors, Telescopes, Spectroscopy, Imaging spectroscopy

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Proceedings Article | 18 July 2024 Presentation + Paper

Presentation + Paper

SCALES status report

R. Deno Stelter, Andrew Skemer, Stephanie Sallum, Nick MacDonald, Renate Kupke, Christopher Ratliff, Cyril Bourgenot, Gerald Cabak, Michael Gonzales, Cristian Rodriguez, Aaron Hunter, Ravinder Banyal, Thirupathi Sivarani, Michael Fitzgerald, Marc Kassis, Olivier Absil, Carlos Alvarez, Natatsha Batalha, Marc-André Boucher, Timothy Brandt, Zack Briesemeister, Katherine de Kleer, Imke de Pater, William Deich, Devika Dicakar, Étienne Gauvin, Thomas Greene, Armirul Hasan, Philip Hinz, Rebecca Jensen-Clem, Christopher Johnson, Govinda K. V., Isabel Kain, Mackenzie Lach, Jean-Thomas Landry, Michael Liu, Jim Lyke, Kenneth Magone, Eduardo Marin, Raquel Martinez, Dimitri Mawet, Rosalie McGurk, Brittany Miles, Ajin Parkash, Dale Sandford, Ramya Sethuram, Patrick Sheehan, Ji Man Sohn, Jordan Stone, Arun Surya, Hari Varshney, Eric Wang

Proceedings Volume 13096, 1309619 (2024) https://doi.org/10.1117/12.3020806

KEYWORDS: Mirrors, Cryostats, Coronagraphy, Spectrographs, Telescopes, Imaging systems, Exoplanets

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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 | 30 August 2022 Poster + Paper

Poster + Paper

An optical distortion solution for the Keck I OSIRIS Imager

Matthew S. Freeman, Jessica Lu, Jim Lyke, Jacques Delorme, Emily Ramey, Grace Jung, Sylvain Cetre, Scott Lilley, Paul Richards, Ed Wetherell, Avinash Surendran, Anna Coerver, Peter Wizinowich

Proceedings Volume 12185, 121853R (2022) https://doi.org/10.1117/12.2630712

KEYWORDS: Distortion, Stars, Hubble Space Telescope, Imaging systems, Telescopes, Sensors, Refraction, Mahalanobis distance, Detection and tracking algorithms, Data modeling

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Proceedings Article | 29 August 2022 Presentation + Paper

Presentation + Paper

Design of SCALES: a 2-5 micron coronagraphic integral field spectrograph for Keck Observatory

Andrew Skemer, R. Deno Stelter, Stephanie Sallum, Nicholas MacDonald, Renate Kupke, Christopher Ratliff, Ravinder Banyal, Amirul Hasan, Hari Mohan Varshney, Arun Surya, Ajin Prakaesh, Sivarani Thirupathi, Ramya Sethuram, Govinda K.V., Michael Fitzgerald, Eric Wang, Marc Kassis, Olivier Absil, Carlos Alvarez, Natasha Batalha, Marc-André Boucher, Cyril Bourgenot, Timothy Brandt, Zackery Briesemeister, Katherine de Kleer, Imke de Pater, William Deich, Devika Divakar, Guillaume Filion, Étienne Gauvin, Michael Gonzales, Thomas Greene, Philip Hinz, Rebecca Jensen-Clem, Christopher Johnson, Isabel Kain, Gabriel Kruglikov, Mackenzie Lach, Jean-Thomas Landry, Jialin Li, Michael Liu, James Lyke, Kenneth Magnone, Eduardo Marin, Emily Martin, Raquel Martinez, Dimitri Mawet, Brittany Miles, Dale Sandford, Patrick Sheehan, Ji Man Sohn, Jordan Stone

Proceedings Volume 12184, 121840I (2022) https://doi.org/10.1117/12.2630577

KEYWORDS: Exoplanets, Spectrographs, Planets, Sensors, Coronagraphy, Imaging systems, Adaptive optics, Mirrors, Spectroscopy

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Proceedings Article | 29 August 2022 Presentation + Paper

Presentation + Paper

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

Marc Kassis, Steve Allen, Carlos Alvarez, Ravinder Banyal, Robert Bertz, Charles Beichman, Aaron Brown, Matthew Brown, Gerald Cabak, Kevin Bundy, Sylvain Cetre, Jason Chin, Mark Chun, Will Deich, Richard Dekany, Jacques Delorme, Mark Devenot, Greg Doppmann, Michael Fitzgerald, Jason Fucik, Grant Hill, Philip Hinz, Bradford Holden, Andrew Howard, Maodong Gao, Steve Gibson, Percy Gomez, Colby Gottschalk, Peter Gillingham, Tucker Jones, Nemanja Jovanovic, Evan Kirby, Quinn Konopacky, Shanti Krishnan, Renate Kupke, James Larkin, Stephanie Leifer, Hilton Lewis, Scott Lilley, Jessica Lu, James Lyke, Nick MacDonald, Eduardo Marin, Matt Matuszewski, Dimitri Mawet, Rosalie McGurk, Maxwell Millar-Blanchaer, Reston Nash, Craig Nance, James Neill, John O'Meara, Eliad Peretz, Claire Poppett, John Mather, Matthew Radovan, Mitsuko Roberts, Sam Ragland, Kodi Rider, Constance Rockosi, Dale Sandfor, Boqiang Shen, Charles Steidel, Sunil Simha, Andy Skemer, Deno Stelter, Avinash Surendran, James Thorne, Ben McCarney, Kyle Lanclos, Ashley Baker, Ryan Rubenzahl, Arpita Roy, Sam Halverson, Jerry Edelstein, Christopher Martin, Maureen Savage, Dale Sandford, Stephanie Sallum, Josh Walawender, Peter Wizinowich, Kyle Westfall, Kerry Vahala, Shelley Wright, Truman Wold, Sherry Yeh

Proceedings Volume 12184, 1218405 (2022) https://doi.org/10.1117/12.2628630

KEYWORDS: Adaptive optics, Spectrographs, Exoplanets, Sensors, Spectroscopy, Imaging systems, Telescopes, Planets, Cameras, Observatories

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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 | 28 December 2020 Poster + Presentation + Paper

Poster + Presentation + Paper

Characterization and performance of the upgraded NIRSPEC on the W. M. Keck Telescope

Ronald López, Erika Hoffman, Greg Doppmann, Michael Fitzgerald, Chris Johnson, Marc Kassis, Kyle Lanclos, Jim Lyke, Emily Martin, Ian McLean, Ji Man Sohn, Jason Weiss

Proceedings Volume 11447, 114476B (2020) https://doi.org/10.1117/12.2563075

KEYWORDS: Sensors, Spectroscopy, Spectrographs, Telescopes, Cameras, Photometry, Spectroscopes, Stars, Calibration, Lamps

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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

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 | 13 December 2020 Poster + Presentation + Paper

Poster + Presentation + Paper

Liger for next-generation Keck AO: filter wheel and pupil design

Maren Cosens, Shelley Wright, Pauline Arriaga, Aaron Brown, Michael Fitzgerald, Tucker Jones, Marc Kassis, Evan Kress, Renate Kupke, James Larkin, Jim Lyke, Eric Wang, James Wiley, Sherry Yeh

Proceedings Volume 11447, 114474X (2020) https://doi.org/10.1117/12.2561837

KEYWORDS: Optical filters, Adaptive optics, Digital filtering, Imaging systems, Spectrographs, Iterated function systems, Image filtering, Keck Observatory, Spectral resolution, Tolerancing

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Liger for next-generation Keck adaptive optics: opto-mechanical dewar for imaging camera and slicer

James Wiley, Kalp Mathur, Aaron Brown, Shelley Wright, Maren Cosens, Jerome Maire, Michael Fitzgerald, Tucker Jones, Marc Kassis, Evan Kress, Renate Kupke, James Larkin, Jim Lyke, Eric Wang, Sherry Yeh

Proceedings Volume 11447, 1144758 (2020) https://doi.org/10.1117/12.2563028

KEYWORDS: Adaptive optics, Optical design, Electronics, Control systems, Spectrographs, Iterated function systems, Imaging systems, Keck Observatory, Vibration isolation, Head

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Update on the preliminary design of SCALES: the Santa Cruz Array of Lenslets for Exoplanet Spectroscopy

R. Deno Stelter, Andrew Skemer, Steph Sallum, Renate Kupke, Phil Hinz, Dimitri Mawet, Rebecca Jensen-Clem, Christopher Ratliffe, Nicholas MacDonald, William Deich, Gabriel Kruglikov, Marc Kassis, Jim Lyke, Zackary Briesemeister, Brittany Miles, Benjamin Gerard, Michael Fitzgerald, Timothy Brandt, Christian Marois

Proceedings Volume 11447, 1144764 (2020) https://doi.org/10.1117/12.2562768

KEYWORDS: Exoplanets, Imaging systems, Imaging spectroscopy, Spectroscopy, Planetary systems, Iterated function systems, Spectrographs, Spectral resolution, Coronagraphy, Keck Observatory

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Proceedings Article | 10 July 2018 Presentation + Paper

Presentation + Paper

Keck Observatory telescope control system upgrade status report

Shui Hung Kwok, Kevin Tsubota, Tomas Krasuski, Jim Lyke, Ben McCarney, Jeff Mader, Kevin McCann

Proceedings Volume 10704, 107040N (2018) https://doi.org/10.1117/12.2313876

KEYWORDS: Telescopes, Control systems, Computer programming, Mirrors, Servomechanisms, Photonic integrated circuits, Switching, Stars, Keck Observatory, Data archive systems

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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 | 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 | 6 July 2018 Paper

Paper

Upgrade and characterization of the OSIRIS imager detector

Pauline Arriaga, Michael Fitzgerald, Chris Johnson, Jason Weiss, James Lyke

Proceedings Volume 10702, 107022U (2018) https://doi.org/10.1117/12.2313101

KEYWORDS: Sensors, Imaging systems, Lamps, Electrons, Iterated function systems, Adaptive optics, Image quality, Image sensors, Infrared detectors, Physics

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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

Read Abstract +

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 | 23 August 2016 Paper

Paper

Upgrade of the detector in the integral field spectrograph OSIRIS at the W. M. Keck Observatory

Anna Boehle, James Larkin, Sean Adkins, Theodore Aliado, Michael Fitzgerald, Christopher Johnson, James Lyke, Kenneth Magnone, Ji Man Sohn, Eric Wang, Jason Weiss

Proceedings Volume 9908, 99082Q (2016) https://doi.org/10.1117/12.2233100

KEYWORDS: Spectrographs, Sensors, Telescopes, Keck Observatory, Adaptive optics, Electronics, Electroluminescent displays, Galactic astronomy, Image sensors, Cryogenics

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Proceedings Article | 9 August 2016 Paper

Paper

Modeling the transmission and thermal emission in a pupil image behind the Keck II adaptive optics system

Pauline Arriaga, Michael Fitzgerald, James Lyke, Randall Campbell, Peter Wizinowich, Sean Adkins, Keith Matthews

Proceedings Volume 9908, 990835 (2016) https://doi.org/10.1117/12.2233068

KEYWORDS: Adaptive optics, Instrument modeling, Image transmission, Image segmentation, Thermal modeling, Astronomy, Signal to noise ratio, Mirrors, Data modeling, Keck Observatory

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Proceedings Article | 8 August 2016 Paper

Paper

Improving the pointing and tracking performance of the Keck telescopes

Shui Hung Kwok, Tomas Krasuski, Jim Lyke, Jeff Mader, Kevin McCann, Kevin Tsubota

Proceedings Volume 9913, 991305 (2016) https://doi.org/10.1117/12.2231825

KEYWORDS: Telescopes, Computer programming, Control systems, Performance modeling, Calibration, Stars, Space telescopes, Data modeling, Cameras, Sensors

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Proceedings Article | 3 August 2016 Paper

Paper

Operational performance of MOSFIRE with its cryogenic configurable slitmask unit at the W. M. Keck Observatory

Marc Kassis, Ian McLean, Charles Steidel, Keith Matthews, James Lyke, Luca Rizzi, Dwight Chan, Jason Weiss, Sean Adkins, Peter Spanoudakis, Philippe Schwab, Emmanuel Onillon, Leszek Lisowski, Patrick Theurillat, Olivier Chételat, Christophe Meier

Proceedings Volume 9908, 99080E (2016) https://doi.org/10.1117/12.2233006

KEYWORDS: Keck Observatory, Spectrographs, Telescopes, Stars, Galactic astronomy, Sensors, Neodymium, Calibration, Spectroscopy, Optical filters

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Proceedings Article | 26 July 2016 Paper

Paper

Status and new developments with the Keck I near-infrared tip-tilt sensor

Bruno Femenía Castellá, Peter Wizinowich, Rachel Rampy, Sylvain Cetre, Scott Lilley, Jim Lyke, Sam Ragland, Paul Stomski, Marcos van Dam

Proceedings Volume 9909, 990925 (2016) https://doi.org/10.1117/12.2233173

KEYWORDS: Adaptive optics, Stars, Imaging systems, K band, Sensors, Sensors, Adaptive optics, Cameras, Real-time computing, Control systems, Computing systems, Image sensors

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Proceedings Article | 13 August 2014 Open Access

Open Access

Paper

Modeling instrumental field-dependent aberrations in the NIRC2 instrument on the Keck II telescope

Breann Sitarski, Gunther Witzel, Michael Fitzgerald, Leo Meyer, Andrea Ghez, Randall Campbell, Jessica Lu, Keith Matthews, Peter Wizinowich, Jim Lyke

Proceedings Volume 9148, 91486T (2014) https://doi.org/10.1117/12.2057140

KEYWORDS: Iron, Wavefronts, Data centers, Adaptive optics, Point spread functions, Instrument modeling, Telescopes, Sensors, Data modeling, Cadmium sulfide

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Proceedings Article | 21 July 2014 Paper

Paper

A near-infrared tip-tilt sensor for the Keck I laser guide star adaptive optics system

Peter Wizinowich, Roger Smith, Roberto Biasi, Sylvain Cetre, Richard Dekany, Bruno Femenia-Castella, Jason Fucik, David Hale, Chris Neyman, Dietrich Pescoller, Sam Ragland, Paul Stomski, Mario Andrighettoni, Randy Bartos, Khanh Bui, Andrew Cooper, John Cromer, Marcos van Dam, Michael Hess, Ean James, Jim Lyke, Hector Rodriguez, Thomas Stalcup

Proceedings Volume 9148, 91482B (2014) https://doi.org/10.1117/12.2055279

KEYWORDS: Cameras, Sensors, Adaptive optics, Near infrared, Stars, Control systems, Imaging systems, Real-time computing, K band, Computing systems

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Proceedings Article | 21 July 2014 Paper

Paper

Laser guide star facility developments at W. M. Keck Observatory

Jason Chin, Peter Wizinowich, Ed Wetherell, Sylvain Cetre, Sam Ragland, Randy Campbell, Scott Lilley, Jim Lyke, Drew Medeiros, Rachel Rampy, Thomas Stalcup, Kevin Tsubota, Pete Tucker, Kai Wei

Proceedings Volume 9148, 914808 (2014) https://doi.org/10.1117/12.2057449

KEYWORDS: Telescopes, Space telescopes, Dye lasers, Radiofrequency ablation, Adaptive optics, Fiber lasers, Mirrors, Sodium, Optical amplifiers, Lasers

Read Abstract +

Proceedings Article | 13 September 2012 Paper

Paper

Keck I laser guide star adaptive optics system

Jason C. Chin, Peter Wizinowich, Randy Campbell, Liz Chock, Andrew Cooper, Ean James, Jim Lyke, Joe Mastromarino, Olivier Martin, Drew Medeiros, Doug Morrison, Chris Neyman, Sergey Panteleev, Thomas Stalcup, Pete Tucker, Ed Wetherell, Marcos van Dam

Proceedings Volume 8447, 84474F (2012) https://doi.org/10.1117/12.925807

KEYWORDS: Adaptive optics, Telescopes, Space telescopes, Mirrors, Laser safety, Laser systems engineering, Safety, Stars, Sensors, Laser guide stars

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Proceedings Article | 28 July 2010 Paper

Paper

W. M. Keck Observatory's next-generation adaptive optics facility

P. Wizinowich, S. Adkins, R. Dekany, D. Gavel, C. Max, R. Bartos, J. Bell, A. Bouchez, J. Chin, A. Conrad, A. Delacroix, E. Johansson, R. Kupke, C. Lockwood, J. Lyke, F. Marchis, E. McGrath, D. Medeiros, M. Morris, D. Morrison, C. Neyman, S. Panteleev, M. Pollard, M. Reinig, T. Stalcup, S. Thomas, M. Troy, K. Tsubota, V. Velur, K. Wallace, E. Wetherell

Proceedings Volume 7736, 77360K (2010) https://doi.org/10.1117/12.857628

KEYWORDS: Adaptive optics, Telescopes, Wavefront sensors, Stars, Tomography, Control systems, Keck Observatory, Galactic astronomy, Wavefronts, Sensors

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Proceedings Article | 21 July 2010 Paper

Paper

DAVINCI: a high-performance imager and integral field spectrograph for the W. M. Keck Observatory's next-generation adaptive optics facility

Sean Adkins, James Bell, Albert Conrad, Mike Fitzgerald, Renate Kupke, James Larkin, Lee Laiterman, Jim Lyke, Claire Max, Elizabeth McGrath, Mike Pollard, Sergey Panteleev, Sandrine Thomas, Peter Wizinowich

Proceedings Volume 7735, 77357S (2010) https://doi.org/10.1117/12.857840

KEYWORDS: Mirrors, Imaging systems, Adaptive optics, Iterated function systems, Sensors, Spectrographs, Signal to noise ratio, Point spread functions, Telescopes, Relays

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Proceedings Article | 12 July 2008 Paper

Paper

Operating a wide-area remote observing system for the W. M. Keck Observatory

Gregory Wirth, Robert Kibrick, Robert Goodrich, James Lyke

Proceedings Volume 7016, 70160Y (2008) https://doi.org/10.1117/12.790069

KEYWORDS: Telescopes, Observatories, Computing systems, Keck Observatory, Internet, Astronomical telescopes, Video, Optical instrument design, Switches, Reliability

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Proceedings Article | 12 July 2008 Paper

Paper

AO operations at the W. M. Keck Observatory

Randall Campbell, David Le Mignant, Marcos van Dam, Al Conrad, Kenny Grace, Marc Kassis, James Lyke, Hien Tran, Jason Chin, Elizabeth Chock, Steven Doyle, Robert Goodrich, Erik Johansson, Tomas Krasuski, Christine Melcher, Douglas Summers, Roger Sumner, Peter Wizinowich

Proceedings Volume 7016, 701604 (2008) https://doi.org/10.1117/12.790118

KEYWORDS: Adaptive optics, Telescopes, Observatories, Stars, Keck Observatory, Satellites, Laser safety, Safety, Calibration, Space telescopes

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Proceedings Article | 9 July 2008 Paper

Paper

MAGIQ at the W. M. Keck Observatory: initial deployment of a new acquisition, guiding, and image quality monitoring system

Sean Adkins, Judith Cohen, Joel Aycock, James Bell, Richard Cohen, Andrew Cooper, Bob Goodrich, Jimmy Johnson, Shui Kwok, Jim Lyke, Kevin McCann, Chris Neyman, Tom Nordin, Sergey Panteleev, Grant Tolleth, Myrna Tsubota

Proceedings Volume 7014, 70141U (2008) https://doi.org/10.1117/12.789857

KEYWORDS: Cameras, Wavefront sensors, Telescopes, Image quality, Mirrors, Image segmentation, Calibration, Imaging systems, Stars, Space telescopes

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Proceedings Article | 29 June 2006 Paper

Paper

LGS AO operations at the W.M. Keck Observatory

David Le Mignant, Randall Campbell, Antonin Bouchez, Jason Chin, Elizabeth Chock, Al Conrad, Marcos van Dam, Steve Doyle, Robert Goodrich, Erik Johansson, Robert Lafon, James Lyke, Christine Melcher, Ronald Mouser, Douglas Summers, Cynthia Wilburn, Peter Wizinowich

Proceedings Volume 6270, 62700C (2006) https://doi.org/10.1117/12.671837

KEYWORDS: Adaptive optics, Telescopes, Stars, Laser safety, Keck Observatory, Observatories, Space telescopes, Laser guide stars, Sodium, Cameras

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Proceedings Article | 28 June 2006 Paper

Paper

OSIRIS: a diffraction limited integral field spectrograph for Keck

James Larkin, Matthew Barczys, Alfred Krabbe, Sean Adkins, Ted Aliado, Paola Amico, George Brims, Randy Campbell, John Canfield, Thomas Gasaway, Allan Honey, Christof Iserlohe, Christopher Johnson, Evan Kress, David LaFreniere, James Lyke, Ken Magnone, Nick Magnone, Michael McElwain, Juleen Moon, Andreas Quirrenbach, Gunnar Skulason, Inseok Song, Michael Spencer, Jason Weiss, Shelley Wright

Proceedings Volume 6269, 62691A (2006) https://doi.org/10.1117/12.672061

KEYWORDS: Spectrographs, Diffraction, Sensors, Image quality, Adaptive optics, Wavefronts, Cameras, Stars, Galactic astronomy, Astronomy

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Proceedings Article | 27 June 2006 Paper

Paper

LGS AO at W.M. Keck Observatory: routine operations and remaining challenges

David Le Mignant, Marcos van Dam, Antonin Bouchez, Jason Chin, Elizabeth Chock, Randall Campbell, Al Conrad, Steve Doyle, Robert Goodrich, Erik Johansson, Shui Kwok, Robert Lafon, James Lyke, Christine Melcher, Ronald Mouser, Douglas Summers, Paul Stomski, Cynthia Wilburn, Peter Wizinowich

Proceedings Volume 6272, 627201 (2006) https://doi.org/10.1117/12.671939

KEYWORDS: Adaptive optics, Stars, Telescopes, Laser guide stars, Sodium, Keck Observatory, Sensors, Laser safety, Calibration, Target acquisition

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Showing 5 of 44 publications

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