Dr. Kyle B. Westfall Profile

Dr. Kyle B. Westfall

at Univ of California Observatories

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Author

Publications (9)

Proceedings Article | 29 August 2022 Poster + Paper

Development of the FOBOS focal plane positioner

David Adams, Jon Lawrence, Helen McGregor, Ellie O'Brien, Celestina Lacombe, Nuria Lorente, Michael Goodwin, Rebecca Brown, Michael Thomakos, Tayyaba Zafar, Nick MacDonald, Kyle Westfall, Kevin Bundy, Renate Kupke, Marc Kassis, Claire Poppett

Proceedings Volume 12184, 121846K (2022) https://doi.org/10.1117/12.2627289

KEYWORDS: Galactic astronomy, Spectrographs, Robots, Spectroscopy, Optical fibers, Glasses, Astronomical imaging, Telescopes

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Proceedings Article | 29 August 2022 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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Proceedings Article | 13 December 2020 Poster + Paper

Bending losses in multi-mode fibers with low numerical aperture

Marina Huang, Claire Poppett, Renate Kupke, Kevin Bundy, Kyle Westfall, Nicholas MacDonald, Daren Dillon

Proceedings Volume 11447, 1144791 (2020) https://doi.org/10.1117/12.2563237

KEYWORDS: Optical fibers, Telescopes, Spectrographs, Fiber couplers, Spectroscopy, Spectrometers, Collimators, Microlens, Fiber optics tests, Fiber optics

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Proceedings Article | 13 December 2020 Poster + Presentation + Paper

The prototype telescope and spectrograph system for the AMASE project

Renbin Yan, Matthew Bershady, Michael Smith, Nicholas MacDonald, Dmitry Bizyaev, Kevin Bundy, Sabaysachi Chattopadhyay, James Gunn, Kyle Westfall, Marsha Wolf

Proceedings Volume 11447, 114478Y (2020) https://doi.org/10.1117/12.2563195

KEYWORDS: Spectrographs, Prototyping, Telescopes, Optical instrument design, Spectroscopy, Lenses, Field spectroscopy, Spatial resolution, Spectral resolution, CMOS sensors

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Proceedings Article | 13 December 2020 Paper

Starbugs field-allocation simulations for FOBOS

Michael Goodwin, David Adams, Kevin Bundy, Renate Kupke, Celestina Lacombe, Jon Lawrence, Nuria Lorente, Nick MacDonald, Helen McGregor, Ellie O’Brien, Claire Poppett, Lew Waller, Kyle Westfall, Jessica Zheng

Proceedings Volume 11447, 114477Y (2020) https://doi.org/10.1117/12.2560885

KEYWORDS: Device simulation, Telescopes, Spectroscopes, Detection and tracking algorithms, Robotics, Optical fibers, Fiber optics, Spectrographs, Target detection, Sensors

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Proceedings Article | 13 December 2020 Presentation + Paper

The Keck-FOBOS spectroscopic facility: conceptual design

Kevin Bundy, Kyle Westfall, Nick MacDonald, Renate Kupke, Claire Poppett, Timothy Miller, Jon Lawrence, Celestina Saavedra Lacombea, Renbin Yan, Michael Goodwin, Marc Kassis, John O'Meara, Daniel Masters, Joseph Burchett, Benjamin Williams, Robert Rich, V. Villar, Nathan Sandford, Yuan-Sen Ting, Phil Hinz, Chad Schafer, Rachel Mandelbaum, Marina Huang, J. Prochaska, Puragra Guhathakurta

Proceedings Volume 11447, 114471D (2020) https://doi.org/10.1117/12.2562914

KEYWORDS: Imaging spectroscopy, Spectrographs, Spectroscopy, Panoramic photography, Large Synoptic Survey Telescope, Telescopes, Excel, Cameras

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The Fiber Optic Broad-band Optical Spectrometer (FOBOS) is a high-priority spectroscopic facility concept for the W. M. Keck Observatory. Here, we provide an update on the FOBOS conceptual design. FOBOS will deploy 1800 fibers across the 20-arcminute field-of-view of the Keck II Telescope. Starbugs fiber positioners will be used to deploy individual fibers as well as fiber-bundle arrays (integral field units, IFUs). Different combinations of active single fibers or IFUs can be selected to carry light to one of three mounted spectrographs, each with a 600-fiber pseudoslit. Each spectrograph has four wavelength channels, enabling end-to-end instrument sensitivity greater than 30% from 0.31-1.0 µm at a spectral resolution of R ~ 3500. With its high fiber density on a large telescope and modest field-of-view, FOBOS is optimized to obtain deep spectroscopy for large samples. In single- fiber mode, it will deliver premier spectroscopic reference sets for maximizing the information (e.g., photometric redshifts) that can be extracted from panoramic imaging surveys obtained from the forthcoming Rubin and Roman Observatories. Its IFUs will map emission from the circumgalactic interface between forming galaxies and the intergalactic medium at z ~ 2–3, and lay the path for multiplexed resolved spectroscopy of high-z galaxies aided by ground-layer and multi-object adaptive optics. In the nearby universe, its high sampling density and combination of single-fiber and IFU modes will revolutionize our understanding of the M31 disk and bulge via stellar populations and kinematics. Finally, with a robust and intelligent target and program allocation system, FOBOS will be a premier facility for follow-up of rare, faint, and transient sources that can be interleaved into its suite of observing programs. With a commitment to delivering science-ready data products, FOBOS will enable unique and powerful combinations of focused, PI-led programs and community-driven observing campaigns that promise major advances in cosmology, galaxy formation, time-domain astronomy, and stellar evolution.

Proceedings Article | 10 July 2018 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 | 9 July 2018 Presentation

WFOS instrument trade study: slicer vs. fiber instrument concept designs and results (Conference Presentation)

Kevin Bundy, Maureen Savage, Renate Kupke, Nicholas MacDonald, Kyle Westfall, Matthew Radovan, Zheng Cai, Brian Digiorgio, Richard Dekany, Devika Divakar, Jason Fucik, Hangxin Ji, Satoshi Miyazaki, Shinobu Ozaki, Andrew Phillips, Namrata Roy, Roger Smith, Arun Surya, S. Sriram, Sivarani Thirupathi, Toshihiro Tsuzuki

Proceedings Volume 10702, 1070220 (2018) https://doi.org/10.1117/12.2312283

KEYWORDS: Spectrographs, Thirty Meter Telescope, Multiplexing, Robotic systems, Spectroscopy, Astronomical imaging, Robotics, Fiber couplers, Telescopes

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Proceedings Article | 6 July 2018 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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Showing 5 of 9 publications

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