Dr. Gregory Walth Profile

Dr. Gregory Walth

at Carnegie Observatories

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 29 August 2022 Poster + Paper

Liger at Keck Observatory: design of the data reduction system and software interfaces

Nils Rundquist, Andrea Zonca, Arun Surya, Shelley A. Wright, Aaron Brown, Maren Cosens, Michael Fitzgerald, Chris Johnson, Marc Kassis, Renate Kupke, Kyle Lanclos, James E. Larkin, Kenneth G. Magnone, Rosalie McGurk, Ji Man Sohn, Gregory Walth, James E. Wiley, Sherry Yeh

Proceedings Volume 12189, 121891M (2022) https://doi.org/10.1117/12.2630693

KEYWORDS: Iterated function systems, Sensors, Computing systems, Imaging systems, Calibration, IRIS Consortium, Image processing, Keck Observatory, Human-machine interfaces, Data processing

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Proceedings Article | 16 February 2021 Poster + Paper

The Infrared Imaging Spectrograph (IRIS) for TMT: exposure time calculator for IRIS

Gregory Walth, Arun Surya, Nils-Erik Rundquist, Shelley Wright, Maren Cosens, Andrey Vayner, Eric Oh, Jacob Llamas, Warren Skidmore, Eric Chisholm, James Larkin

Proceedings Volume 11452, 1145236 (2021) https://doi.org/10.1117/12.2563029

KEYWORDS: IRIS Consortium, Infrared Imaging Spectrograph, Adaptive optics, Atmospheric optics, Atmospheric modeling, Astronomy, Signal to noise ratio, Infrared imaging, Thermography, Infrared radiation

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Proceedings Article | 17 December 2020 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 | 13 December 2020 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 | 16 July 2018 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 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 | 9 July 2018 Presentation

The infrared imaging spectrograph (IRIS) for TMT: instrument overview (Conference Presentation)

James Larkin, Shelley Wright, Eric Chisholm, David Andersen, Richard Dekany, Jennifer Dunn, Brent Ellerbroek, Yutaka Hayano, Renate Kupke, Anna Moore, Andrew Phillips, Luc Simard, Roger Smith, Ryuji Suzuki, Adam Trapp, Gregory Walth, Robert Weber, James Wincentsen, Jason Weiss, Kai Zhang

Proceedings Volume 10702, 107021T (2018) https://doi.org/10.1117/12.2313891

KEYWORDS: Thirty Meter Telescope, IRIS Consortium, Infrared Imaging Spectrograph, Optical instrument design, Spectrographs, Imaging systems, Infrared imaging, Infrared radiation, Adaptive optics, Diffraction

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Proceedings Article | 8 August 2016 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 | 2 August 2016 Paper

The Infrared Imaging Spectrograph (IRIS) for TMT: motion planning with collision avoidance for the on-instrument wavefront sensors

Edward Chapin, Jennifer Dunn, Jason Weiss, Kim Gillies, Yutaka Hayano, Chris Johnson, James Larkin, Anna Moore, Reed Riddle, Ji Man Sohn, Roger Smith, Ryuji Suzuki, Gregory Walth, Shelley Wright

Proceedings Volume 9913, 99130T (2016) https://doi.org/10.1117/12.2233608

KEYWORDS: IRIS Consortium, Stars, Thirty Meter Telescope, Detection and tracking algorithms, IRIS Consortium, Wavefront sensors, Infrared Imaging Spectrograph, Collision avoidance, Adaptive optics, Astronomy, Observatories

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Proceedings Article | 26 July 2016 Open Access

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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