Mr. Adam B. Johnson Profile

Adam B. Johnson

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Publications (9)

Proceedings Article | 28 August 2024 Poster

SPIDERS: a pathfinder 4th generation planet imager

William Thompson, Adam Johnson, Olivier Lardière, Christian Marois, Darryl Gamroth, Christopher Mann, Angus Bews, Garima Singh, Tim Hardy, Jean-Pierre Véran, Maaike van Kooten, Joeleff Fitzsimmons, Mamadou N'Diaye, Frédéric Grandmont, Suresh Sivanandam, Simon Thibault, Wolfgang Heidrich, Qiang Fu, Krzysztof Caputa

Proceedings Volume 13097, 130974K (2024) https://doi.org/10.1117/12.3018045

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Proceedings Article | 27 August 2024 Presentation + Paper

CAL2: project update of the NRC Canada facility-class focal plane wavefront sensor for the Gemini Planet Imager 2 upgrade

Christian Marois, Olivier Lardière, Joeleff Fitzsimmons, Mathieu Demers, Adam Johnson, Saugata Dutt, Patrick Nkwari, Benjamin Gerard, Jennifer Dunn, Duan Li, Qiang Fu, Denis Brousseau, Suresh Sivanandam, William Thompson, Christopher Mann, Garima Singh, Marc-André Boucher, Tim Hardy, Krzysztof Caputa, Simon Thibault, Dmitry Savransky, Wolfgang Heidrich, Maaike van Kooten, Jean-Pierre Véran, Rebecca Jensen-Clem, Darryl Gamroth, Colin Bradley, Sanjana Rawat, Öykü Galvan, Glen Herriot, Jean-Thomas Landry

Proceedings Volume 13097, 1309708 (2024) https://doi.org/10.1117/12.3020617

KEYWORDS: Equipment, Wavefront sensors, Speckle, Gemini Planet Imager, Stars, Exoplanets, Adaptive optics, Iterated function systems, Calibration, Point spread functions

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Proceedings Article | 27 August 2024 Poster + Paper

An optical feasibility study for STARLITE: superluminous tomographic atmospheric reconstruction with laser-beacons for imaging terrestrial exoplanets

Adam Johnson, Christian Marois, William Thompson, Kate Jackson, Jean-Pierre Véran, Maaike van Kooten, Olivier Lardière, Darryl Gamroth, Colin Bradley

Proceedings Volume 13097, 1309734 (2024) https://doi.org/10.1117/12.3018040

KEYWORDS: Wavefronts, Interpolation, Phase reconstruction, Telescopes, Spatial frequencies, Exoplanets, Atmospheric optics, Atmospheric modeling, Stars, Wavefront errors

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Proceedings Article | 24 August 2024 Presentation

NRC integrated modeling: experimental validation with SPIDERS

Joeleff Fitzsimmons, Olivier Lardiere, Christian Marois, William Thompson, Adam Johnson

Proceedings Volume 13099, 130990Z (2024) https://doi.org/10.1117/12.3020731

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Proceedings Article | 23 August 2024 Poster + Paper

A SmallSat mission study for STARLITE: superluminous tomographic atmospheric reconstruction with laser-beacons for imaging terrestrial exoplanets

Adam Johnson, Ashley Padres, Ryan Hughes, Carmine Buonagura, Zane Chapman, Alexia Kubas, Veronica Hegelein, Ishan Mishra, Adler Smith, Abu Taqui Md Tahsin, Akshiti Parashar, Rafid Bendimerad, Deemo Chen, Qizhi Lu, Asterios Aidan Kounios, Devin Desilva, Verena Padres, Jamie Lloyd, Dmitry Savransky, Joshua Umansky-Castro, Andrew van Paridon, Elaine Petro

Proceedings Volume 13092, 130922U (2024) https://doi.org/10.1117/12.3018042

KEYWORDS: Exoplanets, Stars, Satellites, Global Positioning System, Telescopes, Design, Windows, Earth atmosphere, Adaptive optics, Laser guide stars

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Proceedings Article | 30 August 2022 Presentation + Paper

Deployment of focal plane WFS technologies on 8-m telescopes: from the Subaru SPIDERS pathfinder, to the facility-class GPI 2.0 CAL2 system

Christian Marois, Olivier Lardière, William Thompson, Garima Singh, Adam Johnson, Tim Hardy, Joeleff Fitzsimmons, Benjamin Gerard, Suresh Sivanandam, Simon Thibault, Dmitry Savransky, Colin Bradley, Rebecca Jensen-Clem, Mathieu Demers, Qiang Fu, Wolfgang Heidrich, Mamadou N'Diaye

Proceedings Volume 12185, 121851Y (2022) https://doi.org/10.1117/12.2630564

KEYWORDS: Telescopes, Exoplanets, Wavefront sensors, Stars, Wavefronts, Gemini Planet Imager, Speckle, Imaging systems, Cameras, Adaptive optics

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Proceedings Article | 30 August 2022 Poster + Paper

Blinking the fringes: initial development and results of the Ultra-Low Speed Optical Chopper for the Self-Coherent Camera

Adam Johnson, Christian Marois, Darryl Gamroth, Joeleff Fitzsimmons, Olivier Lardière, William Thompson, Garima Singh, Colin Bradley

Proceedings Volume 12185, 1218575 (2022) https://doi.org/10.1117/12.2630406

KEYWORDS: Stars, Imaging systems, Sensors, Optical choppers, Mechanical engineering, Cameras, Prototyping, Control systems, Optical instrument design, Wavefronts, Exoplanets

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Proceedings Article | 30 August 2022 Poster + Paper

Optical design of SPIDERS, a Subaru Pathfinder Instrument for Detecting Exoplanets and Retrieving Spectra

Olivier Lardière, Christian Marois, William Thompson, Garima Singh, Adam Johnson, Joeleff Fitzsimmons, Tim Hardy, Mamadou N'diaye, Wolfgang Heidrich, Qiang Fu, Denis Brousseau, Simon Thibault

Proceedings Volume 12185, 1218547 (2022) https://doi.org/10.1117/12.2629644

KEYWORDS: Cameras, Mirrors, Telescopes, Adaptive optics, Optical design, Wavefront sensors, Exoplanets, Coherence imaging

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Proceedings Article | 30 August 2022 Poster + Paper

Pupil-plane LLOWFS simulation and laboratory results from NEW-EARTH’s high-contrast imaging testbed

Garima Singh, William Thompson, Olivier Lardière, Christian Marois, Mamadou N'Diaye, Adam Johnson, Jean-Pierre Véran, Glen Herriot, Benjamin Gerard, Qiang Fu, Wolfgang Heidrich

Proceedings Volume 12185, 1218553 (2022) https://doi.org/10.1117/12.2627977

KEYWORDS: Gemini Planet Imager, Coronagraphy, Sensors, Calibration, Exoplanets, Adaptive optics, Wavefront sensors, Wavefronts, Device simulation, Cameras

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Showing 5 of 9 publications

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