Dr. Ronald A. Lopez Profile

Dr. Ronald A. Lopez

Postdoctoral Fellow at Univ of California Santa Barbara

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 18 July 2024 Presentation + Paper

The high-contrast performance of the Keck Planet Imager and Characterizer

Jason Wang, Dimitri Mawet, Jerry Xuan, Chih-Chun Hsu, Jean-Baptiste Ruffio, Katelyn Horstman, Yinzi Xin, Jacques-Robert Delorme, Nemanja Jovanovic, Yapeng Zhang, Luke Finnerty, Ashley Baker, Randall Bartos, Geoffrey Blake, Benjamin Calvin, Sylvain Cetre, Gregory Doppmann, Daniel Echeverri, Michael Fitzgerald, Joshua Liberman, Ronald Lopez, Evan Morris, Jacklyn Pezzato-Rovner, Ben Sappey, Tobias Schofield, Andrew Skemer, J. Kent Wallace, Ji Wang

Proceedings Volume 13096, 130961X (2024) https://doi.org/10.1117/12.3019114

KEYWORDS: Stars, Speckle, Planets, Spectrographs, Signal to noise ratio, Sensors, K band, Imaging systems, Adaptive optics, Coronagraphy

Read Abstract +

Proceedings Article | 18 July 2024 Poster + Paper

Fringing analysis and forward modeling of Keck Planet Imager and Characterizer (KPIC) spectra

Katelyn Horstman, Jean-Baptiste Ruffio, Jason Wang, Chih-Chun Hsu, Ashley Baker, Luke Finnerty, Jerry Xuan, Daniel Echeverri, Dimitri Mawet, Geoffrey Blake, Randall Bartos, Charlotte Bond, Benjamin Calvin, Sylvain Cetre, Jacques-Robert Delorme, Greg Doppmann, Michael Fitzgerald, Nemanja Jovanovic, Ronald Lopez, Emily Martin, Evan Morris, Jacklyn Pezzato, Garreth Ruane, Ben Sappey, Tobias Schofield, Andrew Skemer, Taylor Venenciano, J. Kent Wallace, Ji Wang, Peter Wizinowich

Proceedings Volume 13096, 130962E (2024) https://doi.org/10.1117/12.3018020

KEYWORDS: Data modeling, Stars, Geometrical optics, Calibration, Modeling, Spectral models, Planets, Observational astronomy, Imaging systems

Read Abstract +

SPIE Journal Paper | 12 September 2023

Vortex fiber nulling for exoplanet observations: implementation and first light

Daniel Echeverri, Jerry Xuan, Nemanja Jovanovic, Garreth Ruane, Jacques-Robert Delorme, Dimitri Mawet, Bertrand Mennesson, Eugene Serabyn, J. Kent Wallace, Jason Wang, Jean-Baptiste Ruffio, Luke Finnerty, Yinzi Xin, Maxwell Millar-Blanchaer, Ashley Baker, Randall Bartos, Benjamin Calvin, Sylvain Cetre, Greg Doppmann, Michael Fitzgerald, Sofia Hillman, Katelyn Horstman, Chih-Chun Hsu, Joshua Liberman, Ronald Lopez, Evan Morris, Jacklyn Pezzato, Caprice Phillips, Bin Ren, Ben Sappey, Tobias Schofield, Andrew Skemer, Connor Vancil, Ji Wang

JATIS, Vol. 9, Issue 03, 035002, (September 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.3.035002

KEYWORDS: Stars, Equipment, Exoplanets, Planets, Single mode fibers, Point spread functions, K band, Nulling interferometry, Wavefront aberrations, Calibration

Read Abstract +

SPIE Journal Paper | 2 August 2023

On-sky speckle nulling through a single-mode fiber with the Keck Planet Imager and Characterizer

Yinzi Xin, Jerry W. Xuan, Dimitri Mawet, Jason Wang, Garreth Ruane, Daniel Echeverri, Nemanja Jovanovic, Clarissa Do Ó, Michael Fitzgerald, Katelyn Horstman, Chih-Chun Hsu, Joshua Liberman, Ronald A. López, Caprice L. Phillips, Bin B. Ren, Jean-Baptiste Ruffio, Ben Sappey

JATIS, Vol. 9, Issue 03, 035001, (August 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.3.035001

KEYWORDS: Speckle, Planets, Single mode fibers, Signal to noise ratio, Nulling interferometry, Equipment, Phase measurement, Imaging systems, Wavefronts, Stars

Read Abstract +

Proceedings Article | 29 August 2022 Presentation + Paper

Phase II of the Keck Planet Imager and characterizer: system-level laboratory characterization and preliminary on-sky commissioning

Daniel Echeverri, Nemanja Jovanovic, Jacques-Robert Delorme, Yinzi Xin, Tobias Schofield, Luke Finnerty, Jason Wang, Jerry Xuan, Dimitri Mawet, Ashley Baker, Randall Bartos, Charlotte Bond, Marta Bryan, Benjamin Calvin, Sylvain Cetre, Greg Doppmann, Michael Fitzgerald, Jason Fucik, Katelyn Horstman, Ronald Lopez, Emily Martin, Stefan Martin, Bertrand Mennesson, Evan Morris, Reston Nash, Jackie Pezzato, Michael Porter, Sam Ragland, Mitsuko Roberts, Garreth Ruane, Jean-Baptiste Ruffio, Ben Sappey, Eugene Serabyn, Andrew Skemer, Taylor Venenciano, J. Kent Wallace, Ji Wang, Peter Wizinowich

Proceedings Volume 12184, 121841W (2022) https://doi.org/10.1117/12.2630518

KEYWORDS: Adaptive optics, Calibration, Coronagraphy, Point spread functions, Imaging systems, Single mode fibers, Planets, Photodetectors

Read Abstract +

Proceedings Article | 29 August 2022 Poster + Paper

On-sky performance and lessons learned from the phase I KPIC fiber injection unit

Luke Finnerty, Tobias Schofield, Jacques-Robert Delorme, Ben Sappey, Jason J. Wang, Jean-Baptiste Ruffio, Dimitri Mawet, Michael Fitzgerald, Nemanja Jovanovic, Ashley Baker, Randall Bartos, Charlotte Bond, Marta Bryan, Benjamin Calvin, Sylvain Cetre, Greg Doppmann, Daniel Echeverri, Ronald Lopez, Emily Martin, Evan Morris, Jacklyn Pezzato, Sam Ragland, Garreth Ruane, Andrew Skemer, Taylor Venenciano, J. Kent Wallace, Ji Wang, Peter Wizinowich, Jerry Xuan

Proceedings Volume 12184, 121844Y (2022) https://doi.org/10.1117/12.2630276

KEYWORDS: Calibration, Fiber science, Adaptive optics, K band, Spectroscopy, Cameras, Mirrors, Spectrographs, Single mode fibers, Light sources

Read Abstract +

Proceedings Article | 29 August 2022 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

Read Abstract +

SPIE Journal Paper | 13 August 2021 Open Access

Keck Planet Imager and Characterizer: a dedicated single-mode fiber injection unit for high-resolution exoplanet spectroscopy

Jacques-Robert Delorme, Nemanja Jovanovic, Daniel Echeverri, Dimitri Mawet, James Kent Wallace, Randall Bartos, Sylvain Cetre, Peter Wizinowich, Sam Ragland, Scott Lilley, Edward Wetherell, Greg Doppmann, Jason Wang, Evan Morris, Jean-Baptiste Ruffio, Emily Martin, Michael Fitzgerald, Garreth Ruane, Tobias Schofield, Nick Suominen, Benjamin Calvin, Eric Wang, Kenneth Magnone, Christopher Johnson, Ji Man Sohn, Ronald Lopez, Charlotte Bond, Jacklyn Pezzato, Jorge Llop-Sayson, Mark Chun, Andrew Skemer

JATIS, Vol. 7, Issue 03, 035006, (August 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.7.3.035006

KEYWORDS: Calibration, Fiber science, Cameras, Imaging systems, Adaptive optics, Stars, Single mode fibers, Sensors, Planets, Mirrors

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 28 December 2020 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

Read Abstract +

Showing 5 of 9 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years