Mr. Charles Z. Lockhart Profile

Charles Z. Lockhart

Senior Engineer at NASA InfraRed Telescope Facility

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 11 September 2024 Poster + Paper

Measuring IRTF image quality and modeled improvement through use of FELIX and the prototype adaptive secondary mirror

Cuc Dinh, John Rayner, Charles Lockhart, Mark Chun, Mike Connelley

Proceedings Volume 13094, 130944H (2024) https://doi.org/10.1117/12.3018056

KEYWORDS: Telescopes, Image quality, Monochromatic aberrations, Wavefront aberrations, Mirrors, Adaptive mirrors, Wavefronts, Wavefront sensors, Wavefront errors, Quality measurement

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Proceedings Article | 27 August 2024 Presentation + Paper

First laboratory and on-sky results of an adaptive secondary mirror with TNO-style actuators on the NASA Infrared Telescope Facility

Ellen Lee, Mark Chun, Olivier Lai, Ruihan Zhang, Max Baeten, Arjo Bos, Matias Kidron, Fred Kamphues, Stefan Kuiper, Wouter Jonker, Michael Connelley, John Rayner, Alan Ryan, Philip Hinz, Rachel Bowens-Rubin, Charles Lockhart, Michael Kelii

Proceedings Volume 13097, 130972P (2024) https://doi.org/10.1117/12.3016132

KEYWORDS: Actuators, Mirrors, Telescopes, Mirror surfaces, Deformable mirrors, Adaptive mirrors, Adaptive optics, Astronomical adaptive optics

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Proceedings Article | 29 August 2022 Paper

SPECTRE: a 0.4-4.2-micron IFU Spectrograph for the NASA Infrared Telescope Facility

Michael Connelley, John Rayner, Charles Lockhart, Theodora Bowe, Dan Kokubun, Adwin Boogert

Proceedings Volume 12184, 121847X (2022) https://doi.org/10.1117/12.2629587

KEYWORDS: Spectrographs, Mirrors, Sensors, Prisms, Telescopes, Cameras, Relays, CCD cameras, Visible radiation, Optical benches

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Proceedings Article | 29 August 2022 Paper

Commissioning 'Opihi: a wide-angle finderscope for the NASA Infrared Telescope Facility

Ellen Lee, Kenji Emerson, Michael Connelley, Theodora Bowe, Schelte Bus, Charles Lockhart

Proceedings Volume 12184, 121848D (2022) https://doi.org/10.1117/12.2627277

KEYWORDS: Asteroids, Stars, Telescopes, Image processing, Databases, Cameras, Optical filters, Infrared telescopes

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SPIE Journal Paper | 24 September 2020 Open Access

Adaptive optics with an infrared pyramid wavefront sensor at Keck

Cedric Plantet, Charlotte Bond, Sylvain Cetre, Scott Lilley, Peter Wizinowich, Dimitri Mawet, Mark Chun, Edward Wetherell, Shane Jacobson, Charles Lockhart, Eric Warmbier, Sam Ragland, Carlos Álvarez, Olivier Guyon, Sean Goebel, Jacques-Robert Delorme, Nemanja Jovanovic, Donald Hall, James Wallace, Mojtaba Taheri, Vincent Chambouleyron

JATIS, Vol. 6, Issue 03, 039003, (September 2020) https://doi.org/10.1117/12.10.1117/1.JATIS.6.3.039003

KEYWORDS: Adaptive optics, Modulation, Infrared sensors, Wavefront sensors, Sensors, Stars, Infrared imaging, Infrared radiation, Wavefronts, K band

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Proceedings Article | 9 September 2019 Presentation

The Keck Planet Imager and Characterizer: demonstrating advanced exoplanet characterization techniques for future extremely large telescopes (Conference Presentation)

Nemanja Jovanovic, Jacques-Robert Delorme, Charlotte Bond, Sylvain Cetre, Dimitri Mawet, Daniel Echeverri, James Wallace, Randy Bartos, Scott Lilley, Sam Ragland, Garreth Ruane, Peter Wizinowich, Mark Chun, Ji Wang, Jason Wang, Michael Fitzgerald, Jacklyn Pezzato, Keith Matthews, Ben Calvin, Maxwell Millar-Blanchaer, Emily Martin, Edward Wetherell, Eric Wang, Shane Jacobson, Eric Warmbier, Charles Lockhart, Don Hall, Rebecca Jensen-Clem, Eden McEwen

Proceedings Volume 11117, 111170T (2019) https://doi.org/10.1117/12.2529330

KEYWORDS: Exoplanets, Imaging systems, Planets, Large telescopes, Imaging spectroscopy, Infrared imaging, Infrared radiation, Spectroscopes, Adaptive optics, Mid-IR

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Proceedings Article | 11 July 2018 Paper

A near-infrared pyramid wavefront sensor for Keck adaptive optics: real-time controller

Sylvain Cetre, Olivier Guyon, Charlotte Bond, Mark Chun, Dimitri Mawet, Peter Wizinowich, Charles Lockhart, Sean Goebel, Ed Wetherell

Proceedings Volume 10703, 1070339 (2018) https://doi.org/10.1117/12.2311781

KEYWORDS: Adaptive optics, Real-time computing, Cameras, Mirrors, Wavefront sensors, Sensors, Control systems, Deformable mirrors, Human-machine interfaces, Imaging systems

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Proceedings Article | 10 July 2018 Presentation + Paper

Adaptive optics with an infrared pyramid wavefront sensor

Charlotte Bond, Peter Wizinowich, Mark Chun, Dimitri Mawet, Scott Lilley, Sylvain Cetre, Nemanja Jovanovic, Jacques-Robert Delorme, Edward Wetherell, Shane Jacobson, Charles Lockhart, Eric Warmbier, James Wallace, Donald Hall, Sean Goebel, Olivier Guyon, Cedric Plantet, Guido Agapito, Christophe Giordano, Simone Esposito, Bruno Femenia-Castella

Proceedings Volume 10703, 107031Z (2018) https://doi.org/10.1117/12.2314121

KEYWORDS: Wavefront sensors, Adaptive optics, Sensors, Infrared sensors, Modulation, Infrared telescopes, Cameras, Infrared imaging

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Proceedings Article | 10 July 2018 Presentation + Paper

LASSO: Large Adaptive optics Survey for Substellar Objects using the new SAPHIRA detector on Robo-AO

Maïssa Salama, James Ou, Christoph Baranec, Michael Liu, Brendan Bowler, Reed Riddle, Dmitry Duev, Donald Hall, Dani Atkinson, Sean Goebel, Mark Chun, Shane Jacobson, Charles Lockhart, Eric Warmbier, Shrinivas Kulkarni, Nicholas Law

Proceedings Volume 10703, 1070307 (2018) https://doi.org/10.1117/12.2313885

KEYWORDS: Sensors, Stars, Infrared cameras, Cameras, Adaptive optics, Telescopes, Astronomy, Exoplanets, Infrared radiation, Infrared detectors

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Proceedings Article | 9 August 2016 Paper

iSHELL: a construction, assembly and testing

John Rayner, Alan Tokunaga, Dan Jaffe, Morgan Bonnet, Greg Ching, Mike Connelley, Dan Kokubun, Charles Lockhart, Eric Warmbier

Proceedings Volume 9908, 990884 (2016) https://doi.org/10.1117/12.2232064

KEYWORDS: Spectrographs, Optical benches, Spectral resolution, Calibration, Mirrors, Telescopes, Aluminum, Lamps, Silicon, Optical alignment

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Proceedings Article | 1 August 2016 Paper

Next-generation performance of SAPHIRA HgCdTe APDs

Dani Atkinson, Donald N. Hall, Ian Baker, Sean Goebel, Shane Jacobson, Charles Lockhart, Eric Warmbier

Proceedings Volume 9915, 99150N (2016) https://doi.org/10.1117/12.2234314

KEYWORDS: Mercury cadmium telluride, Photon counting, Avalanche photodetectors, Near infrared, Readout integrated circuits, Sensors, Telescopes, Wavefront sensors, Astronomy, Measurement devices

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Proceedings Article | 29 September 2004 Paper

IOTA: the array controller for a gigapixel OTCCD camera for Pan-STARRS

Peter Onaka, John Tonry, Gerard Luppino, Charles Lockhart, Aaron Lee, Gregory Ching, Sidik Isani, Robin Uyeshiro

Proceedings Volume 5499, (2004) https://doi.org/10.1117/12.550622

KEYWORDS: Prototyping, Data storage, Analog electronics, Interfaces, Cameras, Field programmable gate arrays, Clocks, Switches, Computer aided design, Cadmium sulfide

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Proceedings Article | 7 March 2003 Paper

The Redstar3 array controller: embedding Linux and PCs as a DSP replacement

Peter Onaka, Charles Lockhart, Alan Tokunaga, John Rayner, Douglas Toomey, Gregory Ching

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.461186

KEYWORDS: Digital signal processing, Data storage, Electronics, Interfaces, Human-machine interfaces, Control systems, Telecommunications, Infrared radiation, Control systems design, Data processing

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Showing 5 of 13 publications

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