Dr. John T. Trauger Profile

Dr. John T. Trauger

Senior Research Scientist at Jet Propulsion Laboratory

SPIE Involvement:

Author

Publications (84)

SPIE Journal Paper | 20 September 2024 Open Access

Open Access

Current laboratory performance of starlight suppression systems and potential pathways to desired Habitable Worlds Observatory exoplanet science capabilities

Bertrand Mennesson, Ruslan Belikov, Emiel Por, Eugene Serabyn, Garreth Ruane, A. J. Eldorado Riggs, Dan Sirbu, Laurent Pueyo, Rémi Soummer, Jeremy Kasdin, Stuart Shaklan, Byoung-Joon Seo, Christopher Stark, Eric Cady, Pin Chen, Brendan Crill, Kevin Fogarty, Alexandra Greenbaum, Olivier Guyon, Roser Juanola-Parramon, Brian Kern, John Krist, Bruce Macintosh, David Marx, Dimitri Mawet, Camilo Mejia Prada, Rhonda Morgan, Bijan Nemati, Leonid Pogorelyuk, Susan Redmond, Sara Seager, Nicholas Siegler, Karl Stapelfeldt, Sarah Steiger, John Trauger, James Wallace, Marie Ygouf, Neil Zimmerman

JATIS, Vol. 10, Issue 03, 035004, (September 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.3.035004

KEYWORDS: Coronagraphy, Planets, Signal to noise ratio, Telescopes, Point spread functions, Stars, Exoplanets, Wavefronts, Spectroscopy, Design

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We summarize the current best polychromatic (∼10% to 20% bandwidth) contrast performance demonstrated in the laboratory by different starlight suppression approaches and systems designed to directly characterize exoplanets around nearby stars. We present results obtained by internal coronagraph and external starshade experimental testbeds using entrance apertures equivalent to off-axis or on-axis telescopes, either monolithic or segmented. For a given angular separation and spectral bandwidth, the performance of each starlight suppression system is characterized by the values of “raw” contrast (before image processing), off-axis (exoplanet) core throughput, and post-calibration contrast (the final 1-sigma detection limit of off-axis point sources, after image processing). Together, the first two parameters set the minimum exposure time required for observations of exoplanets at a given signal-to-noise, i.e., assuming perfect subtraction of background residuals down to the photon noise limit. In practice, residual starlight speckle fluctuations during the exposure will not be perfectly estimated nor subtracted, resulting in a finite post-calibrated contrast and exoplanet detection limit whatever the exposure time. To place the current laboratory results in the perspective of the future Habitable Worlds Observatory (HWO) mission, we simulate visible observations of a fiducial Earth/Sun twin system at 12 pc, assuming a 6 m (inscribed diameter) collecting aperture and a realistic end-to-end optical throughput. The exposure times required for broadband exo-Earth detection (20% bandwidth around λ=0.55 μm) and visible spectroscopic observations (R=70) are then computed assuming various levels of starlight suppression performance, including the values currently demonstrated in the laboratory. Using spectroscopic exposure time as a simple metric, our results point to key starlight suppression system design performance improvements and trades to be conducted in support of HWO’s exoplanet science capabilities. These trades may be explored via numerical studies, lab experiments, and high-contrast space-based observations and demonstrations.

Proceedings Article | 23 August 2024 Poster + Paper

Poster + Paper

Coronagraph design survey for future exoplanet direct imaging space missions

Ruslan Belikov, Christopher Stark, Nick Siegler, Emiel Por, Bertrand Mennesson, Susan Redmond, Pin Chen, Kevin Fogarty, Olivier Guyon, Roser Juanola-Parramon, Jeremy Kasdin, John Krist, Dimitri Mawet, Rhonda Morgan, Camilo Mejia Prada, Laurent Pueyo, Garreth Ruane, Dan Sirbu, Karl Stapelfeldt, John Trauger, Neil Zimmerman, Mary Angelie Alagao, Alex Carlotti, Jamal Chafi, David Doleman, Jessica Gersh-Range, Lorenzo König, Lucille Leboulleux, Dwight Moody, A. Riggs, Eugene Serabyn, Frans Snik, Kent Wallace

Proceedings Volume 13092, 1309266 (2024) https://doi.org/10.1117/12.3020614

KEYWORDS: Coronagraphy, Design, Cadmium sulfide, Stars, Telescopes, Exoplanets, Equipment, Yield improvement, Planets, Photonic integrated circuits

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Proceedings Article | 23 August 2024 Poster + Paper

Poster + Paper

A hardware implementation for low-order wavefront sensing and control in exoplanet imaging

John Trauger, J. Kent Wallace, John Krist, A. Riggs, Duncan Liu

Proceedings Volume 13092, 130926C (2024) https://doi.org/10.1117/12.3020600

KEYWORDS: Coronagraphy, Wavefronts, Wavefront errors, Wavefront sensors, Optical components, Exoplanets, Deformable mirrors, Telescopes

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SPIE Journal Paper | 11 October 2023 Open Access

Open Access

End-to-end numerical modeling of the Roman Space Telescope coronagraph

John Krist, John Steeves, Brandon Dube, A.J. Eldorado Riggs, Brian Kern, David Marx, Eric Cady, Hanying Zhou, Ilya Poberezhskiy, Caleb Baker, James McGuire, Bijan Nemati, Gary Kuan, Bertrand Mennesson, John Trauger, Navtej Saini, Sergi Hildebrandt Rafels

JATIS, Vol. 9, Issue 04, 045002, (October 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.4.045002

KEYWORDS: Coronagraphy, Actuators, Space telescopes, Numerical modeling, Wavefronts, Modeling, Stars, Monochromatic aberrations, Polarization, Simulations

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Proceedings Article | 5 October 2023 Poster + Paper

Poster + Paper

Coronagraph design survey for future exoplanet direct imaging space missions: interim update

Ruslan Belikov, Christopher Stark, Nick Siegler, Emiel Por, Bertrand Mennesson, Pin Chen, Kevin Fogarty, Olivier Guyon, Roser Juanola-Parramon, John Krist, Dimitri Mawet, Camilo Mejia Prada, Jeremy Kasdin, Laurent Pueyo, Susan Redmond, Garreth Ruane, Dan Sirbu, Karl Stapelfeldt, John Trauger, Neil Zimmerman

Proceedings Volume 12680, 126802G (2023) https://doi.org/10.1117/12.2677732

KEYWORDS: Coronagraphy, Design and modelling, Telescopes, Equipment, Exoplanets, Observatories, Wavefronts, Yield improvement, Planets

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Proceedings Article | 1 September 2021 Poster + Paper

Poster + Paper

Flight mask designs of the Roman Space Telescope coronagraph instrument

A. J. Eldorado Riggs, Vanessa Bailey, Dwight Moody, Erkin Sidick, Kunjithapatham Balasubramanian, Douglas Moore, Daniel Wilson, Garreth Ruane, Dan Sirbu, Jessica Gersh-Range, John Trauger, Bertrand Mennesson, Nicholas Siegler, Eduardo Bendek, Tyler Groff, Neil Zimmerman, John Debes, Scott Basinger, N. Jeremy Kasdin

Proceedings Volume 11823, 118231Y (2021) https://doi.org/10.1117/12.2598599

KEYWORDS: Coronagraphy, Photomasks, Exoplanets, Polarimetry, Spectroscopy, Space telescopes

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Proceedings Article | 16 September 2019 Presentation + Paper

Presentation + Paper

Design description and commissioning performance of a stable coronagraph technology development testbed for direct imaging of Earth-like exoplanets

Keith Patterson, Byoung-Joon Seo, Kunjithapatham Balasubramanian, Talso Chui, Brendan Crill, John Gill, Brian Kern, Ray Lam, David Marx, Dwight Moody, Camilo Mejia Prada, Garreth Ruane, Jordan Rupp, John Shaw, Fang Shi, Nicholas Siegler, Hong Tang, John Trauger, Victor White, Daniel Wilson, Karl Yee, Robert Zimmer

Proceedings Volume 11117, 111171U (2019) https://doi.org/10.1117/12.2530401

KEYWORDS: Exoplanets, Coronagraphy, Deformable mirrors, Visible radiation, Turbulence, Convection, Composites, Vibration isolation, Electronics, Wavefront sensors

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Proceedings Article | 16 September 2019 Presentation + Paper

Presentation + Paper

Testbed demonstration of high-contrast coronagraph imaging in search for Earth-like exoplanets

Byoung-Joon Seo, Keith Patterson, Kunjithapatham Balasubramanian, Brendan Crill, Talso Chui, Daniel Echeverri, Brian Kern, David Marx, Dwight Moody, Camilo Mejia Prada, Garreth Ruane, Fang Shi, John Shaw, Nick Siegler, Hong Tang, John Trauger, Daniel Wilson, Robert Zimmer

Proceedings Volume 11117, 111171V (2019) https://doi.org/10.1117/12.2530033

KEYWORDS: Coronagraphy, Exoplanets, Space telescopes, James Webb Space Telescope, Infrared telescopes, Visible radiation, Aerospace engineering, Space operations, Telescopes, Near infrared

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Proceedings Article | 9 September 2019 Open Access

Open Access

Paper

Numerical modeling of the Habex coronagraph

John Krist, Stefan Martin, Gary Kuan, Bertrand Mennesson, Garreth Ruane, Navtej Saini, John Trauger, James Breckinridge, Dimitri Mawet, Philip Stahl, Jeffrey Davis

Proceedings Volume 11117, 1111705 (2019) https://doi.org/10.1117/12.2530462

KEYWORDS: Coronagraphy, Polarization, Telescopes, Numerical modeling

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Proceedings Article | 9 September 2019 Presentation

Presentation

The WFIRST coronagraph instrument (CGI) technology demonstration

N. Jeremy Kasdin, Bruce Macintosh, Margaret Turnbull, Vanessa Bailey, John Trauger, Bertrand Mennesson, Jason Rhodes, Margaret Frerking, Feng Zhao

Proceedings Volume 11117, 111170B (2019) https://doi.org/10.1117/12.2528929

KEYWORDS: Coronagraphy, Imaging spectroscopy, Planets, Infrared telescopes, James Webb Space Telescope, Exoplanets, Wavefronts, Algorithm development, Jupiter, Infrared radiation

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Proceedings Article | 22 August 2018 Presentation + Paper

Presentation + Paper

Hybrid lyot coronagraph for WFIRST: high contrast testbed demonstration in flight-like low flux environment

Byoung-Joon Seo, Fang Shi, Bala Balasubramanian, Eric Cady, Brian Gordon, Brian Kern, Raymond Lam, David Marx, Dwight Moody, Richard Muller, Keith Patterson, Ilya Poberezhskiy, Camilo Mejia Prada, A.J. Eldorado Riggs, John Trauger, Daniel Wilson

Proceedings Volume 10698, 106982P (2018) https://doi.org/10.1117/12.2314358

KEYWORDS: Coronagraphy, Telescopes, Wavefronts, Space telescopes, Low light level imaging

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Proceedings Article | 1 August 2018 Presentation + Paper

Presentation + Paper

The WFIRST coronagraph instrument: a major step in the exploration of sun-like planetary systems via direct imaging

Bertrand Mennesson, J. Debes, E. Douglas, B. Nemati, C. Stark, J. Kasdin, B. Macintosh, M. Turnbull, M. Rizzo, A. Roberge, N. Zimmerman, K. Cahoy, J. Krist, V. Bailey, J. Trauger, J. Rhodes, L. Moustakas, M. Frerking, F. Zhao, I. Poberezhskiy, R. Demers

Proceedings Volume 10698, 106982I (2018) https://doi.org/10.1117/12.2313861

KEYWORDS: Stars, Coronagraphy, Planets, Imaging systems, Solar system, Clouds, Spatial resolution, Mid-IR, Visible radiation, Exoplanets

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Proceedings Article | 16 July 2018 Presentation + Paper

Presentation + Paper

WFIRST coronagraph flight performance modeling

John Krist, Robert Effinger, Brian Kern, Milan Mandic, James McGuire, Dwight Moody, Patrick Morrissey, Ilya Poberezhskiy, A. J. Riggs, Navtej Saini, Erkin Sidick, Hong Tang, John Trauger

Proceedings Volume 10698, 106982K (2018) https://doi.org/10.1117/12.2310043

KEYWORDS: Coronagraphy, Thermal modeling

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Proceedings Article | 10 July 2018 Presentation

Presentation

The WFIRST coronagraph instrument: technology demonstration and science potential (Conference Presentation)

N. Jeremy Kasdin, Margaret Turnbull, Bruce Macintosh, Nikole Lewis, Aki Roberge, John Trauger, Bertrand Mennesson, Vanessa Bailey, Jason Rhodes, Leonidas Moustakas, Margaret Frerking, Feng Zhao, Richard Demers, Ilya Poberezhskiy

Proceedings Volume 10698, 106982H (2018) https://doi.org/10.1117/12.2315002

KEYWORDS: Imaging spectroscopy, Coronagraphy, Exoplanets, Infrared telescopes, James Webb Space Telescope, Space telescopes, Spectroscopes, Planets, Infrared radiation, Telescopes

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Proceedings Article | 1 September 2017 Presentation + Paper

Presentation + Paper

Hybrid Lyot coronagraph for WFIRST: high-contrast broadband testbed demonstration

Byoung-Joon Seo, Eric Cady, Brian Gordon, Brian Kern, Raymond Lam, David Marx, Dwight Moody, Richard Muller, Keith Patterson, Ilya Poberezhskiy, Camilo Mejia Prada, Erkin Sidick, Fang Shi, John Trauger, Daniel Wilson

Proceedings Volume 10400, 104000F (2017) https://doi.org/10.1117/12.2274687

KEYWORDS: Wavefronts, Infrared telescopes, Wavefront sensors, Infrared radiation, Space telescopes, Telescopes, Exoplanets, Metals, Dielectrics, Deformable mirrors

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Proceedings Article | 1 September 2017 Presentation + Paper

Presentation + Paper

Sensitivity of WFIRST coronagraph broadband contrast performance to DM actuator errors

Erkin Sidick, Byoung-Joon Seo, Brian Kern, Ilya Poberezhskiy, Bijan Nemati, John Trauger

Proceedings Volume 10400, 1040006 (2017) https://doi.org/10.1117/12.2274421

KEYWORDS: Actuators, Deformable mirrors, Space telescopes, Exoplanets, Coronagraphy, Adaptive optics, Performance modeling, Wavefronts, Control systems, Interferometry

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Proceedings Article | 1 September 2017 Paper

Paper

Shaped pupil coronagraphy for WFIRST: high-contrast broadband testbed demonstration

Eric Cady, Kunjithapatham Balasubramanian, Jessica Gersh-Range, Jeremy Kasdin, Brian Kern, Raymond Lam, Camilo Mejia Prada, Dwight Moody, Keith Patterson, Ilya Poberezhskiy, A. J. Eldorado Riggs, Byoung-Joon Seo, Fang Shi, Hong Tang, John Trauger, Hanying Zhou, Neil Zimmerman

Proceedings Volume 10400, 104000E (2017) https://doi.org/10.1117/12.2272834

KEYWORDS: Wavefronts, Coronagraphy, Exoplanets, Wavefront sensors, Performance modeling, Systems modeling, Control systems

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Proceedings Article | 1 September 2017 Presentation + Paper

Presentation + Paper

Dynamic testbed demonstration of WFIRST coronagraph low order wavefront sensing and control (LOWFS/C)

Fang Shi, Eric Cady, Byoung-Joon Seo, Xin An, Kunjithapatham Balasubramanian, Brian Kern, Raymond Lam, David Marx, Dwight Moody, Camilo Mejia Prada, Keith Patterson, Ilya Poberezhskiy, Joel Shields, Erkin Sidick, Hong Tang, John Trauger, Tuan Truong, Victor White, Daniel Wilson, Hanying Zhou

Proceedings Volume 10400, 104000D (2017) https://doi.org/10.1117/12.2274887

KEYWORDS: Wavefront sensors, Wavefronts, Mirrors, Deformable mirrors, Environmental sensing, Phase shifting, Optical telescopes, Optical fabrication, Device simulation, Space telescopes

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Proceedings Article | 29 July 2016 Paper

Paper

Concept study for a compact planetary homodyne interferometer (PHI) for temporal global observation of methane on Mars in IR

Sona Hosseini, Chris Webster, Geoffrey Toon, Wesley Traub, John Trauger

Proceedings Volume 9904, 99045C (2016) https://doi.org/10.1117/12.2233805

KEYWORDS: Methane, Mars, Homodyne detection, Spectral resolution, Interferometers, Spectroscopy, Telescopes, Space telescopes, Mirrors, Diffraction gratings

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SPIE Journal Paper | 11 March 2016

Coronagraph instrument for WFIRST-AFTA

M. Charley Noecker, Feng Zhao, Rick Demers, John Trauger, Olivier Guyon, N. Jeremy Kasdin

JATIS, Vol. 2, Issue 01, 011001, (March 2016) https://doi.org/10.1117/12.10.1117/1.JATIS.2.1.011001

KEYWORDS: Coronagraphy, Space telescopes, Telescopes, Exoplanets, Planets, Stars, Mirrors, Observatories, Optical instrument design, Wavefronts

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SPIE Journal Paper | 8 March 2016

Hybrid Lyot coronagraph for wide-field infrared survey telescope-astrophysics focused telescope assets: occulter fabrication and high contrast narrowband testbed demonstration

Byoung-Joon Seo, Brian Gordon, Brian Kern, Andreas Kuhnert, Dwight Moody, Richard Muller, Ilya Poberezhskiy, John Trauger, Daniel Wilson

JATIS, Vol. 2, Issue 01, 011019, (March 2016) https://doi.org/10.1117/12.10.1117/1.JATIS.2.1.011019

KEYWORDS: Coronagraphy, Telescopes, Infrared telescopes, Space telescopes, Nickel, Astronomical telescopes, Infrared radiation, Dielectrics, Actuators, Photomasks

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SPIE Journal Paper | 14 January 2016 Open Access

Open Access

Hybrid Lyot coronagraph for WFIRST-AFTA: coronagraph design and performance metrics

John Trauger, Dwight Moody, John Krist, Brian Gordon

JATIS, Vol. 2, Issue 01, 011013, (January 2016) https://doi.org/10.1117/12.10.1117/1.JATIS.2.1.011013

KEYWORDS: Coronagraphy, Telescopes, Wavefronts, Exoplanets, Stars, Space telescopes, Optical instrument design, Mirrors, Imaging spectroscopy, Dielectrics

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Proceedings Article | 16 September 2015 Paper

Paper

Exo-C: a probe-scale space observatory for direct imaging and spectroscopy of extrasolar planetary systems

Karl Stapelfeldt, Frank Dekens, Michael Brenner, Keith Warfield, Ruslan Belikov, Paul Brugarolas, Geoffrey Bryden, Kerri Cahoy, Supriya Chakrabarti, Serge Dubovitsky, Robert Effinger, Brian Hirsch, Andrew Kissil, John Krist, Jared Lang, Mark Marley, Michael McElwain, Victoria Meadows, Joel Nissen, Jeffrey Oseas, Chris Pong, Eugene Serabyn, Eric Sunada, John Trauger, Stephen Unwin

Proceedings Volume 9605, 96050T (2015) https://doi.org/10.1117/12.2191720

KEYWORDS: Planets, Coronagraphy, Telescopes, Space telescopes, Stars, Exoplanets, Wavefronts, Space operations, Imaging spectroscopy, Spectroscopy

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Proceedings Article | 16 September 2015 Paper

Paper

Hybrid Lyot coronagraph for WFIRST-AFTA: coronagraph design and performance metrics

John Trauger, Brian Gordon, John Krist, Dwight Moody

Proceedings Volume 9605, 96050N (2015) https://doi.org/10.1117/12.2190625

KEYWORDS: Coronagraphy, Telescopes, Wavefronts, Exoplanets, Space telescopes, Stars, Mirrors, Optical instrument design, Actuators, Deformable mirrors

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Proceedings Article | 28 August 2014 Paper

Paper

Recent progress on phase-mask coronagraphy based on photonic-crystal technology

Naoshi Murakami, Jun Nishikawa, Motohide Tamura, Eugene Serabyn, Wesley Traub, Kurt Liewer, Dwight Moody, John Trauger, Olivier Guyon, Frantz Martinache, Nemanja Jovanovic, Garima Singh, Fumika Oshiyama, Hayato Shoji, Moritsugu Sakamoto, Shoki Hamaguchi, Kazuhiko Oka, Naoshi Baba

Proceedings Volume 9143, 914334 (2014) https://doi.org/10.1117/12.2054790

KEYWORDS: Coronagraphy, Manufacturing, Photomasks, Spiral phase plates, Space telescopes, Telescopes, Light sources, Polarizers, Adaptive optics, Polarization

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Proceedings Article | 28 August 2014 Paper

Paper

Exo-C: a probe-scale space mission to directly image and spectroscopically characterize exoplanetary systems using an internal coronagraph

Karl Stapelfeldt, Michael Brenner, Keith Warfield, Frank Dekens, Ruslan Belikov, Paul Brugarolas, Geoffrey Bryden, Kerri Cahoy, Supriya Chakrabarti, Serge Dubovitsky, Robert Effinger, Brian Hirsch, Andrew Kissil, John Krist, Jared Lang, Mark Marley, Michael McElwain, Victoria Meadows, Joel Nissen, Jeffrey Oseas, Eugene Serabyn, Eric Sunada, John Trauger, Stephen Unwin

Proceedings Volume 9143, 91432K (2014) https://doi.org/10.1117/12.2057115

KEYWORDS: Planets, Coronagraphy, Stars, Space telescopes, Telescopes, Space operations, Exoplanets, Wavefronts, Mirrors, Iterated function systems

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Proceedings Article | 2 August 2014 Paper

Paper

Technology development towards WFIRST-AFTA coronagraph

Ilya Poberezhskiy, Feng Zhao, Xin An, Kunjithapatham Balasubramanian, Ruslan Belikov, Eric Cady, Richard Demers, Rosemary Diaz, Qian Gong, Brian Gordon, Renaud Goullioud, Frank Greer, Olivier Guyon, Michael Hoenk, N. Jeremy Kasdin, Brian Kern, John Krist, Andreas Kuhnert, Michael McElwain, Bertrand Mennesson, Dwight Moody, Richard Muller, Bijan Nemati, Keith Patterson, A. J. Riggs, Daniel Ryan, Byoung-Joon Seo, Stuart Shaklan, Erkin Sidick, Fang Shi, Nicholas Siegler, Rémi Soummer, Hong Tang, John Trauger, J. Kent Wallace, Xu Wang, Victor White, Daniel Wilson, Karl Yee, Hanying Zhou, Neil Zimmerman

Proceedings Volume 9143, 91430P (2014) https://doi.org/10.1117/12.2060320

KEYWORDS: Coronagraphy, Sensors, Wavefronts, Wavefront sensors, Iterated function systems, Photomasks, Space telescopes, Exoplanets, Deformable mirrors, Planets

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Proceedings Article | 2 August 2014 Paper

Paper

Science yield estimation for AFTA coronagraphs

Wesley Traub, Ruslan Belikov, Olivier Guyon, N. Jeremy Kasdin, John Krist, Bruce Macintosh, Bertrand Mennesson, Dmitry Savransky, Michael Shao, Eugene Serabyn, John Trauger

Proceedings Volume 9143, 91430N (2014) https://doi.org/10.1117/12.2054834

KEYWORDS: Planets, Coronagraphy, Speckle, Stars, Exoplanets, Space telescopes, Infrared telescopes, Signal to noise ratio, Jupiter, Sensors

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Proceedings Article | 26 September 2013 Paper

Paper

High-contrast imaging results with the vortex coronagraph

E. Serabyn, J. Trauger, D. Moody, D. Mawet, K. Liewer, J. Krist, B. Kern

Proceedings Volume 8864, 88640Y (2013) https://doi.org/10.1117/12.2024660

KEYWORDS: Coronagraphy, Light, Polarization, Wave plates, Stars, Space telescopes, Cameras, Polarizers, Point spread functions, Speckle

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Proceedings Article | 26 September 2013 Paper

Paper

Assessing the performance limits of internal coronagraphs through end-to-end modeling

John Krist, Ruslan Belikov, Laurent Pueyo, Dimitri Mawet, Dwight Moody, John Trauger, Stuart Shaklan

Proceedings Volume 8864, 88640P (2013) https://doi.org/10.1117/12.2024954

KEYWORDS: Coronagraphy, Wavefronts, Wave propagation, Deformable mirrors, Polarization, Control systems, Diffraction, Mirrors, Coating, Stars

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Proceedings Article | 26 September 2013 Paper

Paper

Complex apodized Lyot coronagraph for exoplanet imaging with partially obscured telescope apertures

John Trauger, Dwight Moody, Brian Gordon

Proceedings Volume 8864, 886412 (2013) https://doi.org/10.1117/12.2024795

KEYWORDS: Coronagraphy, Telescopes, Space telescopes, Exoplanets, Optical instrument design, Wavefronts, Stars, Deformable mirrors, Imaging spectroscopy, Actuators

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Proceedings Article | 26 September 2013 Paper

Paper

The Debris Disk Explorer: a balloon-borne coronagraph for observing debris disks

Lewis Roberts, Geoffrey Bryden, Wesley Traub, Stephen Unwin, John Trauger, John Krist, Jack Aldrich, Paul Brugarolas, Karl Stapelfeldt, Mark Wyatt, David Stuchlik, James Lanzi

Proceedings Volume 8864, 88640A (2013) https://doi.org/10.1117/12.2025282

KEYWORDS: Stars, Coronagraphy, Telescopes, Planets, Mirrors, Wavefront sensors, Planetary systems, Solar system, Space telescopes, Light scattering

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Proceedings Article | 26 September 2013 Paper

Paper

PISCES: an integral field spectrograph to advance high contrast imaging technologies

Michael McElwain, Marshall Perrin, Qian Gong, Ashlee Wilkins, Karl Stapelfeldt, Bruce Woodgate, Timothy Brandt, Sara Heap, George Hilton, Jeffrey Kruk, Dwight Moody, John Trauger

Proceedings Volume 8864, 88641O (2013) https://doi.org/10.1117/12.2024385

KEYWORDS: Iterated function systems, Coronagraphy, Exoplanets, Planets, Imaging spectroscopy, Wavefronts, Spectrographs, Sensors, Electroluminescent displays, Point spread functions

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Proceedings Article | 26 September 2013 Paper

Paper

Survey of experimental results in high-contrast imaging for future exoplanet missions

P. Lawson, R. Belikov, W. Cash, M. Clampin, T. Glassman, O. Guyon, N. J. Kasdin, B. Kern, R. Lyon, D. Mawet, D. Moody, R. Samuele, E. Serabyn, D. Sirbu, J. Trauger

Proceedings Volume 8864, 88641F (2013) https://doi.org/10.1117/12.2021302

KEYWORDS: Coronagraphy, Exoplanets, Stars, Planets, Polarizers, Deformable mirrors, Manufacturing, Optics manufacturing, Image segmentation, Imaging systems

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Proceedings Article | 21 September 2012 Paper

Paper

Complex apodization Lyot coronagraphy for the direct imaging of exoplanet systems: design, fabrication, and laboratory demonstration

John Trauger, Dwight Moody, Brian Gordon, John Krist, Dimitri Mawet

Proceedings Volume 8442, 84424Q (2012) https://doi.org/10.1117/12.926663

KEYWORDS: Coronagraphy, Stars, Optical filters, Dielectrics, Calibration, Exoplanets, Deformable mirrors, Imaging systems, Metals, Imaging spectroscopy

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Proceedings Article | 21 September 2012 Paper

Paper

Review of small-angle coronagraphic techniques in the wake of ground-based second-generation adaptive optics systems

Dimitri Mawet, Laurent Pueyo, Peter Lawson, Laurent Mugnier, Wesley Traub, Anthony Boccaletti, John Trauger, Szymon Gladysz, Eugene Serabyn, Julien Milli, Ruslan Belikov, Markus Kasper, Pierre Baudoz, Bruce Macintosh, Christian Marois, Ben Oppenheimer, Harrisson Barrett, Jean-Luc Beuzit, Nicolas Devaney, Julien Girard, Olivier Guyon, John Krist, Bertrand Mennesson, David Mouillet, Naoshi Murakami, Lisa Poyneer, Dmitri Savransky, Christophe Vérinaud, James Wallace

Proceedings Volume 8442, 844204 (2012) https://doi.org/10.1117/12.927245

KEYWORDS: Coronagraphy, Space telescopes, Telescopes, Adaptive optics, Stars, Spiral phase plates, Planets, Wavefronts, Cameras, Modulation

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Proceedings Article | 21 September 2012 Paper

Paper

Coronagraph focal-plane phase masks based on photonic crystal technology: recent progress and observational strategy

Naoshi Murakami, Jun Nishikawa, Wesley Traub, Dimitri Mawet, Dwight Moody, Brian Kern, John Trauger, Eugene Serabyn, Shoki Hamaguchi, Fumika Oshiyama, Moritsugu Sakamoto, Akitoshi Ise, Kazuhiko Oka, Naoshi Baba, Hiroshi Murakami, Motohide Tamura

Proceedings Volume 8442, 844205 (2012) https://doi.org/10.1117/12.925613

KEYWORDS: Coronagraphy, Polarization, Photonic crystals, Manufacturing, Photomasks, Stars, Polarimetry, Spiral phase plates, Phase shift keying, Planets

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Proceedings Article | 21 September 2012 Paper

Paper

End-to-end coronagraphic modeling including a low-order wavefront sensor

John Krist, John Trauger, Stephen Unwin, Wesley Traub

Proceedings Volume 8442, 844253 (2012) https://doi.org/10.1117/12.927143

KEYWORDS: Wavefronts, Coronagraphy, Telescopes, Wavefront sensors, Space telescopes, Stars, Planets, Mirrors, Phase contrast, Actuators

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Proceedings Article | 21 September 2012 Paper

Paper

Coronagraphic imaging of debris disks from a high altitude balloon platform

Stephen Unwin, Wesley Traub, Geoffrey Bryden, Paul Brugarolas, Pin Chen, Olivier Guyon, Lynn Hillenbrand, John Krist, Bruce Macintosh, Dimitri Mawet, Bertrand Mennesson, Dwight Moody, Lewis Roberts, Karl Stapelfeldt, David Stuchlik, John Trauger, Gautam Vasisht

Proceedings Volume 8442, 84420G (2012) https://doi.org/10.1117/12.924175

KEYWORDS: Coronagraphy, Telescopes, Stars, Planets, Space telescopes, Wavefronts, Sensors, Wavefront sensors, Planetary systems, Solar system

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Proceedings Article | 15 September 2011 Paper

Paper

A hybrid Lyot coronagraph for the direct imaging and spectroscopy of exoplanet systems: recent results and prospects

John Trauger, Dwight Moody, Brian Gordon, John Krist, Dimitri Mawet

Proceedings Volume 8151, 81510G (2011) https://doi.org/10.1117/12.895032

KEYWORDS: Coronagraphy, Imaging spectroscopy, Stars, Exoplanets, Imaging systems, Deformable mirrors, Wavefronts, Dielectrics, Signal attenuation, Planets

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Proceedings Article | 15 September 2011 Paper

Paper

Assessing the performance limits of internal coronagraphs through end-to-end modeling: a NASA TDEM study

John Krist, Ruslan Belikov, Laurent Pueyo, Dimitri Mawet, Dwight Moody, John Trauger, Stuart Shaklan

Proceedings Volume 8151, 81510E (2011) https://doi.org/10.1117/12.892772

KEYWORDS: Wavefronts, Wave propagation, Coronagraphy, Actuators, Spatial frequencies, Control systems, Telescopes, Diffraction, Apodization, Mirrors

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Proceedings Article | 15 September 2011 Paper

Paper

Zodiac II: debris disk science from a balloon

Geoffrey Bryden, Wesley Traub, Lewis Roberts, Robin Bruno, Stephen Unwin, Stan Backovsky, Paul Brugarolas, Supriya Chakrabarti, Pin Chen, Lynne Hillenbrand, John Krist, Charles Lillie, Bruce Macintosh, Dimitri Mawet, Bertrand Mennesson, Dwight Moody, Zahidul Rahman, Justin Rey, Karl Stapelfeldt, David Stuchlik, John Trauger, Gautam Vaischt

Proceedings Volume 8151, 81511E (2011) https://doi.org/10.1117/12.899688

KEYWORDS: Telescopes, Stars, Coronagraphy, Space telescopes, Planets, Mirrors, Wavefronts, Signal to noise ratio, Deformable mirrors, Speckle

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Proceedings Article | 15 September 2011 Paper

Paper

Recent results of the second generation of vector vortex coronagraphs on the high-contrast imaging testbed at JPL

Dimitri Mawet, Eugene Serabyn, Dwight Moody, Brian Kern, Albert Niessner, Andreas Kuhnert, David Shemo, Russell Chipman, Stephen McClain, John Trauger

Proceedings Volume 8151, 81511D (2011) https://doi.org/10.1117/12.896070

KEYWORDS: Coronagraphy, Wavefronts, Colorimetry, Space telescopes, Polarizers, Actuators, Optical filters, Polarization, Exoplanets, Point spread functions

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Proceedings Article | 15 September 2011 Paper

Paper

Taking the vector vortex coronagraph to the next level for ground- and space-based exoplanet imaging instruments: review of technology developments in the USA, Japan, and Europe

Dimitri Mawet, Naoshi Murakami, Christian Delacroix, Eugene Serabyn, Olivier Absil, Naoshi Baba, Jacques Baudrand, Anthony Boccaletti, Rick Burruss, Russell Chipman, Pontus Forsberg, Serge Habraken, Shoki Hamaguchi, Charles Hanot, Akitoshi Ise, Mikael Karlsson, Brian Kern, John Krist, Andreas Kuhnert, Marie Levine, Kurt Liewer, Stephen McClain, Scott McEldowney, Bertrand Mennesson, Dwight Moody, Hiroshi Murakami, Albert Niessner, Jun Nishikawa, Nada O'Brien, Kazuhiko Oka, Peggy Park, Pierre Piron, Laurent Pueyo, Pierre Riaud, Moritsugu Sakamoto, Motohide Tamura, John Trauger, David Shemo, Jean Surdej, Nelson Tabirian, Wesley Traub, James Wallace, Kaito Yokochi

Proceedings Volume 8151, 815108 (2011) https://doi.org/10.1117/12.896059

KEYWORDS: Coronagraphy, Polarization, Spiral phase plates, Photonic crystals, Liquid crystals, Polymers, Telescopes, Exoplanets, Space telescopes, Optics manufacturing

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Proceedings Article | 15 September 2011 Paper

Paper

Recent progress in vector vortex coronagraphy

E. Serabyn, D. Mawet, J. Wallace, K. Liewer, J. Trauger, D. Moody, B. Kern

Proceedings Volume 8146, 81460L (2011) https://doi.org/10.1117/12.895267

KEYWORDS: Coronagraphy, Spiral phase plates, Space telescopes, Exoplanets, Telescopes, Optical vortices, Wavefronts, Phase measurement, Polarization, Speckle

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Proceedings Article | 11 August 2010 Paper

Paper

The JWST/NIRCam coronagraph flight occulters

John Krist, Kunjithapatham Balasubramanian, Richard Muller, Stuart Shaklan, Douglas Kelly, Daniel Wilson, Charles Beichman, Eugene Serabyn, Yalan Mao, Pierre Echternach, John Trauger, Kurt Liewer

Proceedings Volume 7731, 77313J (2010) https://doi.org/10.1117/12.856488

KEYWORDS: Coronagraphy, James Webb Space Telescope, Coating, Aluminum, Antireflective coatings, Photomasks, Microscopes, Absorbance, Neodymium, Image transmission

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Proceedings Article | 10 August 2010 Paper

Paper

ACCESS pointing control system

Paul Brugarolas, James Alexander, John Trauger, Dwight Moody, Robert Egerman, Phillip Vallone, Jason Elias, Reem Hejal, Vanessa Camelo, Allen Bronowicki, David O'Connor, Richard Patrick, Pawel Orzechowski, Connie Spittler, Chuck Lillie

Proceedings Volume 7731, 77314V (2010) https://doi.org/10.1117/12.856518

KEYWORDS: Stars, Space telescopes, Telescopes, Coronagraphy, Space operations, Optical isolators, Control systems, Cameras, Point spread functions, Observatories

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Proceedings Article | 6 August 2010 Paper

Paper

ACCESS: a concept study for the direct imaging and spectroscopy of exoplanetary systems

John Trauger, Karl Stapelfeldt, Wesley Traub, John Krist, Dwight Moody, Dimitri Mawet, Eugene Serabyn, Curtis Henry, Paul Brugarolas, James Alexander, Robert Gappinger, Olivia Dawson, Virgil Mireles, Peggy Park, Laurent Pueyo, Stuart Shaklan, Olivier Guyon, Jeremy Kasdin, Robert Vanderbei, David Spergel, Ruslan Belikov, Geoffrey Marcy, Robert Brown, Jean Schneider, Bruce Woodgate, Robert Egerman, Gary Matthews, Jason Elias, Yves Conturie, Phillip Vallone, Perry Voyer, Ronald Polidan, Charles Lillie, Constance Spittler, David Lee, Reem Hejal, Allen Bronowicki, Nick Saldivar, Mark Ealey, Thomas Price

Proceedings Volume 7731, 773128 (2010) https://doi.org/10.1117/12.858301

KEYWORDS: Coronagraphy, Stars, Planets, Mirrors, Telescopes, Space telescopes, Exoplanets, Imaging systems, Observatories, Imaging spectroscopy

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Proceedings Article | 20 August 2009 Paper

Paper

End-to-end simulations of different coronagraphic techniques

John Krist, Dwight Moody, Dimitri Mawet, John Trauger, Ruslan Belikov, Stuart Shaklan, Olivier Guyon, Robert Vanderbei

Proceedings Volume 7440, 744016 (2009) https://doi.org/10.1117/12.826487

KEYWORDS: Wavefronts, Coronagraphy, Wave propagation, Mirrors, Spiral phase plates, Apodization, Actuators, Telescopes, Optical vortices, Exoplanets

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Proceedings Article | 20 August 2009 Paper

Paper

The JWST/NIRCam coronagraph: mask design and fabrication

John Krist, Kunjithapatham Balasubramanian, Charles Beichman, Pierre Echternach, Joseph Green, Kurt Liewer, Richard Muller, Eugene Serabyn, Stuart Shaklan, John Trauger, Daniel Wilson, Scott Horner, Yalan Mao, Stephen Somerstein, Gopal Vasudevan, Douglas Kelly, Marcia Rieke

Proceedings Volume 7440, 74400W (2009) https://doi.org/10.1117/12.826448

KEYWORDS: Coronagraphy, James Webb Space Telescope, Stars, Halftones, Telescopes, Diffraction, Coating, Photomasks, Sapphire, Light scattering

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Proceedings Article | 20 August 2009 Paper

Paper

Phase-induced amplitude apodization (PIAA) coronagraph testing at the High Contrast Imaging Testbed

Brian Kern, Ruslan Belikov, Amir Give'on, Olivier Guyon, Andreas Kuhnert, Marie Levine-West, Ian McMichael, Dwight Moody, Albert Niessner, Laurent Pueyo, Stuart Shaklan, Wesley Traub, John Trauger

Proceedings Volume 7440, 74400H (2009) https://doi.org/10.1117/12.826988

KEYWORDS: Wavefronts, Coronagraphy, Mirrors, Apodization, Cameras, Planets, Point spread functions, Computer generated holography, Actuators, Data modeling

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Proceedings Article | 20 August 2009 Paper

Paper

Vector vortex coronagraph: first results in the visible

Dimitri Mawet, John Trauger, Eugene Serabyn, Dwight Moody, Kurt Liewer, John Krist, David Shemo, Nada O'Brien

Proceedings Volume 7440, 74400X (2009) https://doi.org/10.1117/12.826569

KEYWORDS: Coronagraphy, Spiral phase plates, Polarization, Wavefronts, Optical vortices, Space telescopes, Exoplanets, Telescopes, Manufacturing, Wavefront sensors

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Proceedings Article | 14 July 2008 Paper

Paper

ACCESS: a NASA mission concept study of an Actively Corrected Coronagraph for Exoplanet System Studies

John Trauger, Karl Stapelfeldt, Wesley Traub, Curt Henry, John Krist, Dimitri Mawet, Dwight Moody, Peggy Park, Laurent Pueyo, Eugene Serabyn, Stuart Shaklan, Olivier Guyon, Jeremy Kasdin, David Spergel, Robert Vanderbei, Ruslan Belikov, Geoffrey Marcy, Robert Brown, Jean Schneider, Bruce Woodgate, Gary Matthews, Robert Egerman, Ronald Polidan, Charles Lillie, Mark Ealey, Thomas Price

Proceedings Volume 7010, 701029 (2008) https://doi.org/10.1117/12.789119

KEYWORDS: Coronagraphy, Stars, Planets, Telescopes, Space telescopes, Mirrors, Wavefronts, Control systems, Space operations, Imaging systems

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Proceedings Article | 12 July 2008 Paper

Paper

Design and demonstration of hybrid Lyot coronagraph masks for improved spectral bandwidth and throughput

D. Moody, B. Gordon, J. Trauger

Proceedings Volume 7010, 70103P (2008) https://doi.org/10.1117/12.790133

KEYWORDS: Coronagraphy, Signal attenuation, Phase shifts, Dielectrics, Actuators, Wavefronts, Nickel, Metals, Stars, Imaging spectroscopy

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Proceedings Article | 12 July 2008 Paper

Paper

Pupil mapping Exoplanet Coronagraphic Observer (PECO)

Olivier Guyon, James Angel, Dana Backman, Ruslan Belikov, Donald Gavel, Amir Giveon, Thomas Greene, Jeremy Kasdin, James Kasting, Marie Levine, Mark Marley, Michael Meyer, Glenn Schneider, Gene Serabyn, Stuart Shaklan, Michael Shao, Motohide Tamura, Domenick Tenerelli, Wesley Traub, John Trauger, Robert Vanderbei, Robert Woodruff, Neville Woolf, Jeffrey Wynn

Proceedings Volume 7010, 70101Y (2008) https://doi.org/10.1117/12.790080

KEYWORDS: Coronagraphy, Planets, Wavefronts, Telescopes, Stars, Exoplanets, Mirrors, Apodization, Space telescopes, Wavefront sensors

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Proceedings Article | 19 September 2007 Paper

Paper

Laboratory demonstrations of high-contrast imaging for space coronagraphy

John Trauger, Amir Give'on, Brian Gordon, Brian Kern, Andreas Kuhnert, Dwight Moody, Albert Niessner, Fang Shi, Daniel Wilson, Chris Burrows

Proceedings Volume 6693, 66930X (2007) https://doi.org/10.1117/12.735004

KEYWORDS: Coronagraphy, Stars, Wavefronts, Deformable mirrors, Speckle, Actuators, Mirrors, Signal attenuation, Space telescopes, Imaging systems

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Proceedings Article | 19 September 2007 Paper

Paper

Hybrid Lyot coronagraph masks and wavefront control for improved spectral bandwidth and throughput

D. Moody, J. Trauger

Proceedings Volume 6693, 66931I (2007) https://doi.org/10.1117/12.735070

KEYWORDS: Coronagraphy, Phase shifts, Glasses, Signal attenuation, Stars, Wavefronts, Dielectrics, Nickel, Metals, Actuators

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Proceedings Article | 19 September 2007 Paper

Paper

Hunting planets and observing disks with the JWST NIRCam coronagraph

John Krist, Charles Beichman, John Trauger, Marcia Rieke, Steve Somerstein, Joseph Green, Scott Horner, John Stansberry, Fang Shi, Michael Meyer, Karl Stapelfeldt, Thomas Roellig

Proceedings Volume 6693, 66930H (2007) https://doi.org/10.1117/12.734873

KEYWORDS: Coronagraphy, Stars, Planets, James Webb Space Telescope, Point spread functions, Wavefronts, Telescopes, Space telescopes, Sensors, Diffraction

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Proceedings Article | 19 September 2007 Paper

Paper

Demonstration of high contrast in 10% broadband light with the shaped pupil coronagraph

Ruslan Belikov, Amir Give'on, Brian Kern, Eric Cady, Michael Carr, Stuart Shaklan, Kunjithapatham Balasubramanian, Victor White, Pierre Echternach, Matt Dickie, John Trauger, Andreas Kuhnert, N. Jeremy Kasdin

Proceedings Volume 6693, 66930Y (2007) https://doi.org/10.1117/12.734976

KEYWORDS: Wavefronts, Coronagraphy, Manufacturing, Speckle, Photomasks, Point spread functions, Control systems, Planets, Optics manufacturing, Imaging systems

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Proceedings Article | 7 July 2006 Open Access

Open Access

Paper

The effects of instrumental elliptical polarization on stellar point spread function fine structure

Joseph Carson, Brian Kern, John Trauger, James Breckinridge

Proceedings Volume 6265, 62653M (2006) https://doi.org/10.1117/12.672518

KEYWORDS: Point spread functions, Mirrors, Polarization, Reflectivity, Coating, Reflection, Space telescopes, Elliptical polarization, Numerical analysis, Spherical lenses

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Proceedings Article | 7 July 2006 Paper

Paper

Studying a simple TPF-C

John Krist, John Trauger, Dwight Moody

Proceedings Volume 6265, 62653O (2006) https://doi.org/10.1117/12.672386

KEYWORDS: Wavefronts, Planets, Stars, Speckle, Mirrors, Coronagraphy, Wave propagation, Actuators, Deformable mirrors, Diffraction

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Proceedings Article | 5 July 2006 Paper

Paper

Toward 10¹⁰ contrast for terrestrial exoplanet detection: demonstration of wavefront correction in a shaped-pupil coronagraph

Ruslan Belikov, Amir Give'on, John Trauger, Michael Carr, N. Kasdin, Robert Vanderbei, Fang Shi, Kunjithapatham Balasubramanian, Andreas Kuhnert

Proceedings Volume 6265, 626518 (2006) https://doi.org/10.1117/12.672511

KEYWORDS: Speckle, Coronagraphy, Wavefronts, Point spread functions, Cameras, Manufacturing, Imaging systems, Planets, Polarization, Charge-coupled devices

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Proceedings Article | 27 June 2006 Paper

Paper

TPF-C: status and recent progress

Wesley Traub, Marie Levine, Stuart Shaklan, James Kasting, J. Roger Angel, Michael Brown, Robert Brown, Christopher Burrows, Mark Clampin, Alan Dressler, Henry Ferguson, Heidi Hammel, Sara Heap, Scott Horner, Garth Illingworth, N. Jeremy Kasdin, Mark Kuchner, Douglas Lin, Mark Marley, Victoria Meadows, Charley Noecker, Ben Oppenheimer, Sara Seager, Michael Shao, Karl Stapelfeldt, John Trauger

Proceedings Volume 6268, 62680T (2006) https://doi.org/10.1117/12.673608

KEYWORDS: Planets, Stars, Coronagraphy, Mirrors, Telescopes, Wavefronts, Performance modeling, Space telescopes, Control systems, Actuators

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Proceedings Article | 14 June 2006 Paper

Paper

Speckle nulling for exoplanet detection with space-based coronagraphic telescopes

Pascal Bordé, Wesley Traub, Brian Kern, John Trauger, Andreas Kuhnert

Proceedings Volume 6265, 62651C (2006) https://doi.org/10.1117/12.670553

KEYWORDS: Speckle, Coronagraphy, Actuators, Planets, Space telescopes, Telescopes, Stars, Sensors, Deformable mirrors, Exoplanetary science

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Proceedings Article | 5 October 2005 Paper

Paper

Graded coronagraphic masks for high-contrast near-infrared imaging

Joseph Carson, Daniel Wilson, John Trauger

Proceedings Volume 5905, 59051D (2005) https://doi.org/10.1117/12.615935

KEYWORDS: Glasses, Point spread functions, Coronagraphy, Binary data, Opacity, Adaptive optics, Telescopes, K band, Silica, Photomasks

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Proceedings Article | 5 October 2005 Paper

Paper

Wavefront amplitude variation of TPF's high-contrast imaging testbed: modeling and experiment

Fang Shi, Andrew Lowman, Dwight Moody, Albert Niessner, John Trauger

Proceedings Volume 5905, 59051L (2005) https://doi.org/10.1117/12.618574

KEYWORDS: Mirrors, Wavefronts, Cameras, Near field optics, Imaging systems, Stars, Optical testing, Semiconductor lasers, Planets, Wavefront sensors

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Proceedings Article | 15 September 2005 Paper

Paper

High contrast imaging with the JWST NIRCAM coronagraph

Joseph Green, Charles Beichman, Scott Basinger, Scott Horner, Michael Meyer, David Redding, Marcia Rieke, John Trauger

Proceedings Volume 5905, 59050L (2005) https://doi.org/10.1117/12.619343

KEYWORDS: James Webb Space Telescope, Stars, Coronagraphy, Telescopes, Space telescopes, Adaptive optics, Planets, Gemini Observatory, Calibration, Wavefronts

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Proceedings Article | 12 October 2004 Paper

Paper

High-contrast imaging testbed for the Terrestrial Planet Finder coronagraph

Andrew Lowman, John Trauger, Brian Gordon, Joseph Green, Dwight Moody, Albert Niessner, Fang Shi

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.547710

KEYWORDS: Coronagraphy, Cameras, Planets, Mirrors, Wavefront sensors, Wavefronts, Deformable mirrors, Stars, Control systems, Space telescopes

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Proceedings Article | 12 October 2004 Paper

Paper

The Terrestrial Planet Finder coronagraph: technology and mission design studies

Virginia Ford, P. Lisman, Stuart Shaklan, John Trauger, Timothy Ho, Daniel Hoppe, Andrew Lowman

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.551539

KEYWORDS: Coronagraphy, Planets, Stars, Mirrors, Wavefronts, Deformable mirrors, Light scattering, Space telescopes, Systems modeling, Telescopes

Read Abstract +

Proceedings Article | 12 October 2004 Paper

Paper

Coronagraph contrast demonstrations with the high-contrast imaging testbed

John Trauger, Chris Burrows, Brian Gordon, Joseph Green, Andrew Lowman, Dwight Moody, Albert Niessner, Fang Shi, Daniel Wilson

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.552520

KEYWORDS: Coronagraphy, Space telescopes, Wavefronts, Photomasks, Mirrors, Stars, Telescopes, Deformable mirrors, Algorithm development, Wavefront sensors

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Proceedings Article | 30 January 2004 Paper

Paper

High-density deformable mirrors to enable coronagraphic planet detection

Mark Ealey, John Trauger

Proceedings Volume 5166, (2004) https://doi.org/10.1117/12.512729

KEYWORDS: Actuators, Mirrors, Deformable mirrors, Wavefronts, Space telescopes, Coronagraphy, Telescopes, Stars, Planets, Spatial frequencies

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Proceedings Article | 19 November 2003 Paper

Paper

Demonstration of extreme wavefront sensing performance on the TPF high-contrast imaging testbed

Joseph Green, Scott Basinger, David Cohen, Albert Niessner, David Redding, Stuart Shaklan, John Trauger

Proceedings Volume 5170, (2003) https://doi.org/10.1117/12.506513

KEYWORDS: Error analysis, Point spread functions, Wavefronts, Magnesium, Actuators, Wavefront sensors, Data modeling, Spatial frequencies, Coronagraphy, Near field optics

Read Abstract +

Proceedings Article | 5 March 2003 Paper

Paper

NGST NIRCam scientific program and design concept

Marcia Rieke, Stefi Baum, Charles Beichman, David Crampton, Rene Doyon, Daniel Eisenstein, Thomas Greene, Klaus-Werner Hodapp, Scott Horner, Doug Johnstone, Lawrence Lesyna, Simon Lilly, Michael Meyer, Peter Martin, Donald McCarthy, George Rieke, Thomas Roellig, John Stauffer, John Trauger, Erick Young

Proceedings Volume 4850, (2003) https://doi.org/10.1117/12.489103

KEYWORDS: Tunable filters, Stars, Optical filters, Coronagraphy, Galactic astronomy, Planets, Calibration, Space telescopes, Cameras, Sensors

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Proceedings Article | 3 March 2003 Paper

Paper

Eclipse architecture

Tony Hull, John Trauger, David Redding, Joseph Green

Proceedings Volume 4860, (2003) https://doi.org/10.1117/12.457881

KEYWORDS: Coronagraphy, Space telescopes, Telescopes, Wavefronts, Mirrors, Cameras, Planets, Calibration, Wavefront sensors, Space operations

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Proceedings Article | 3 March 2003 Paper

Paper

Eclipse apodization: realization of occulting spots and Lyot masks

Daniel Wilson, Paul Maker, John Trauger, Tony Hull

Proceedings Volume 4860, (2003) https://doi.org/10.1117/12.457886

KEYWORDS: Glasses, Absorbance, Transmittance, Quantization, Calibration, Microscopes, Coronagraphy, Lithography, Point spread functions, Stars

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Proceedings Article | 3 March 2003 Paper

Paper

Eclipse telescope design factors

Tony Hull, John Trauger, Steven Macenka, Dwight Moody, Guillermo Olarte, Cesar Sepulveda, Walter Tsuha, David Cohen

Proceedings Volume 4860, (2003) https://doi.org/10.1117/12.457884

KEYWORDS: Telescopes, Mirrors, Coronagraphy, Space telescopes, Telescope design, Calibration, Aspheric lenses, Wavefront sensors, Optical alignment, Exoplanets

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Proceedings Article | 24 February 2003 Paper

Paper

The Eclipse mission: a direct imaging survey of nearby planetary systems

John Trauger, Tony Hull, Karl Stapelfeldt, Dana Backman, Roger Bagwell, Robert Brown, Adam Burrows, Christopher Burrows, Mark Ealey, Christ Ftaclas, Sara Heap, Jeremy Kasdin, Jonathan Lunine, Geoff Marcy, David Redding, Wesley Traub, Bruce Woodgate, Raghvendra Sahai, David Spergel

Proceedings Volume 4854, (2003) https://doi.org/10.1117/12.460023

KEYWORDS: Planets, Stars, Coronagraphy, Space telescopes, Wavefronts, Mirrors, Planetary systems, Telescopes, Imaging systems, Clouds

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Proceedings Article | 24 February 2003 Paper

Paper

The 4-m space telescope for investigating extrasolar Earthlike planets in starlight:TPF is HST2

Robert Brown, Christopher Burrows, Stefano Casertano, Mark Clampin, Dennis Ebbets, Eric Ford, Kenneth Jucks, N. Jeremy Kasdin, Steven Kilston, Marc Kuchner, Sara Seager, Alessandro Sozzetti, David Spergel, Wesley Traub, John Trauger, Edwin Turner

Proceedings Volume 4854, (2003) https://doi.org/10.1117/12.459819

KEYWORDS: Planets, Stars, Signal to noise ratio, Space telescopes, Hubble Space Telescope, Coronagraphy, Wavefronts, Exoplanets, Telescopes, Point spread functions

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Proceedings Article | 24 February 2003 Paper

Paper

Performance of a precision high-density deformable mirror for extremely high contrast imaging astronomy from space

John Trauger, Dwight Moody, Brian Gordon, Yekta Gursel, Mark Ealey, Roger Bagwell

Proceedings Volume 4854, (2003) https://doi.org/10.1117/12.460027

KEYWORDS: Mirrors, Actuators, Wavefronts, Space telescopes, Deformable mirrors, Coronagraphy, Telescopes, Stars, Spatial frequencies, Space mirrors

Read Abstract +

Proceedings Article | 30 January 2003 Paper

Paper

Characterization of UV-visible filters for the Wide Field Camera 3 of the Hubble Space Telescope

Nasrat Raouf, John Trauger

Proceedings Volume 4842, (2003) https://doi.org/10.1117/12.458102

KEYWORDS: Optical filters, Wavefronts, Cameras, Spectrophotometry, Hubble Space Telescope, Mirrors, Charge-coupled devices, Ultraviolet radiation, Interferometers, Beam splitters

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Proceedings Article | 28 July 2000 Paper

Paper

HST to HST10X: a second revolution in space science

Holland Ford, James Roger Angel, Christopher Burrows, Jon Morse, John Trauger, Donald Dufford

Proceedings Volume 4013, (2000) https://doi.org/10.1117/12.394041

KEYWORDS: Galactic astronomy, Stars, Planets, Telescopes, Hubble Space Telescope, Image resolution, Space telescopes, Ultraviolet radiation, Spectroscopy, Spatial resolution

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Proceedings Article | 28 July 2000 Paper

Paper

Widefield camera 3 for the Hubble Space Telescope

Edward Cheng, Robert Hill, John MacKenty, Laura Cawley, Patricia Knezek, Ray Kutina, Casey Lisse, Olivia Lupie, Massimo Robberto, Massimo Stiavelli, Robert O'Connell, Bruce Balick, H. Bond, Daniela Calzetti, M. Carollo, Mike Disney, Mike Dopita, J. Frogel, Donald Hall, J. Hester, John Holtzman, Gerard Luppino, P. McCarthy, Francesco Paresce, Abhijit Saha, J. Silk, John Trauger, A. Walker, B. Whitmore, R. Windhorst, Erick Young

Proceedings Volume 4013, (2000) https://doi.org/10.1117/12.394020

KEYWORDS: Stars, Cameras, Hubble Space Telescope, Astronomy, Galactic astronomy, Sensors, Space telescopes, Charge-coupled devices, Ultraviolet radiation, Planets

Read Abstract +

Proceedings Article | 2 June 1995 Paper

Paper

Effects of the space environment on the HST Wide Field Planetary Camera-I

John MacKenty, Sylvia Baggett, John Biretta, Michael Hinds, Christine Ritchie, Lee Feinberg, John Trauger

Proceedings Volume 2478, (1995) https://doi.org/10.1117/12.210921

KEYWORDS: Contamination, Sensors, Charge-coupled devices, CCD image sensors, Ultraviolet radiation, Cameras, Radiation effects, UV optics, Optical filters, Environmental sensing

Read Abstract +

Proceedings Article | 15 October 1993 Paper

Paper

Active mirrors for on-orbit alignment of the second generation Wide-Field and Planetary Camera

James Fanson, John Trauger

Proceedings Volume 1996, (1993) https://doi.org/10.1117/12.160409

KEYWORDS: Mirrors, Atomic force microscopy, Optical alignment, Actuators, Monochromatic aberrations, Calibration, Cameras, Wavefronts, Disk lasers, Hubble Space Telescope

Read Abstract +

Showing 5 of 84 publications

Conference Committee Involvement (1)

Techniques and Instrumentation for Detection of Exoplanets III

28 August 2007 | San Diego, California, United States

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