Dr. Robert T. Zellem Profile

Dr. Robert T. Zellem

at Jet Propulsion Laboratory

SPIE Involvement:

Author

Publications (14)

Proceedings Article | 23 August 2024 Presentation + Paper

Survey science with the Nancy Grace Roman Space Telescope Wide Field Instrument

Joshua Schlieder, Thomas Barclay, Amethyst Barnes, Evan Bray, Ami Choi, Benjamin Cromey, Thomas Delker, Timothy Finch, Eric Frater, Robert Hill, Jeffrey Kruk, Jeffrey Lasco, Dana Louie, Sangeeta Malhotra, Julie McEnery, Gregory Mosby, Jennie Paine, Jeremy Perkins, Bernard Rauscher, James Rhoads, Maxime Rizzo, Derek Sabatke, Rusty Schweickart, Diana Shukis, Eric Switzer, Edward Wollack, Robert Zellem, Neil Zimmerman

Proceedings Volume 13092, 130920S (2024) https://doi.org/10.1117/12.3020622

KEYWORDS: Equipment, Sensors, Astrophysics, Design, Spectroscopy, Optical components, Imaging spectroscopy

Read Abstract +

Proceedings Article | 23 August 2024 Presentation + Paper

The Nancy Grace Roman Space Telescope coronagraph community participation program

Dmitry Savransky, Vanessa Bailey, Schuyler Wolff, Maxwell Millar-Blanchaer, Jason Wang, Lisa Altinier, Ramya Anche, Pierre Baudoz, Beth Biller, Sarah Blunt, Wolfgang Brandner, Marah Brinjikji, Oscar Carrión-González, Amanda Chavez, Elodie Choquet, David Doelman, Julien Girard, Alexandra Greenbaum, Samantha Hasler, Justin Hom, James Ingalls, Stephen Kane, N. Jeremy Kasdin, Oliver Krause, Masayuki Kuzuhara, Alexis Lau, Zhexing Li, John Livingston, Patrick Lowrance, Kevin Ludwick, Bruce Macintosh, Eric Mamajek, Mark Marley, Johan Mazoyer, Bertrand Mennesson, Toshiyuki Mizuki, Sarah Moran, Naoshi Murakami, Jun Nishikawa, Malachi Noel, Laurent Pueyo, Sergi Hildebrandt Rafels, Jason Rhodes, Tyler Robinson, Robert De Rosa, Matthias Samland, Nicholas Schragal, Jürgen Schreiber, Jennifer Sobeck, Karl Stapelfeldt, Motohide Tamura, Taichi Uyajma, Arthur Vigan, Michele Woodland, Marie Ygouf, Kenta Yoneta, Robert Zellem, Neil Zimmerman

Proceedings Volume 13092, 130921I (2024) https://doi.org/10.1117/12.3020514

KEYWORDS: Coronagraphy, Stars, Observatories, Space telescopes, Wavefronts, Telescopes, Planets, Observational astronomy, Exoplanets

Read Abstract +

Proceedings Article | 23 August 2024 Paper

The Roman coronagraph community participation program: data reduction and simulations

Maxwell Andrew Millar-Blanchaer, Jason Wang, Ellis Bogat, Jürgen Schreiber, Marie Ygouf, Kevin Ludwick, Alexandra Greenbaum, Vanessa Bailey, Sergi Hildebrandt Rafels, Dmitry Savransky, Matthias Samland, Lisa Altinier, Ramya Anche, Beth Biller, Amanda Chavez, Elodie Choquet, Julien Girard, Justin Hom, James Ingalls, N. Jeremy Kasdin, Oliver Krause, John Livingston, Johan Mazoyer, Laurent Pueyo, Taichi Uyama, Robert Zellem, Neil Zimmerman

Proceedings Volume 13092, 1309256 (2024) https://doi.org/10.1117/12.3020478

KEYWORDS: Calibration, Coronagraphy, Simulations, Observational astronomy, Data processing, Exoplanets, Equipment, Analog electronics, Space telescopes, Signal processing

Read Abstract +

Proceedings Article | 23 August 2024 Presentation + Paper

The Pandora SmallSat: multiwavelength characterization of exoplanets and their host stars

Elisa Quintana, Jessie Dotson, Knicole Colón, Thomas Barclay, Pete Supsinskas, Jordan Karburn, Dániel Apai, Christina Hedges, Benjamin Rackham, Jason Rowe, Natalie Allen, Paul Bonney, Samuel Cano, Jessie Christiansen, David Ciardi, Néstor Espinoza, Trevor Foote, Emily Gilbert, Thomas Greene, Kelsey Hoffman, Benjamin Hord, Aishwarya Iyer, Aurora Kesseli, Veselin Kostov, Nikole Lewis, Sarah Logsdon, Andrew Mann, Megan Mansfield, James Mason, Brett Morris, Gregory Mosby, Susan Mullally, Elisabeth Newton, Fuda Nguyen, Joshua Schlieder, Kevin Stevenson, Lindsey Wiser, Allison Youngblood, Robert Zellem

Proceedings Volume 13092, 1309214 (2024) https://doi.org/10.1117/12.3020633

KEYWORDS: Exoplanets, Stars, Observatories, Sensors, Atmospheres, Planets, Space operations, Contamination, Visible radiation, Telescopes

Read Abstract +

Proceedings Article | 5 October 2023 Presentation + Paper

Nancy Grace Roman Space Telescope coronagraph instrument overview and status

Vanessa Bailey, Eduardo Bendek, Brian Monacelli, Caleb Baker, Gasia Bedrosian, Eric Cady, Ewan Douglas, Tyler Groff, Sergi Hildebrandt, N. Jeremy Kasdin, John Krist, Bruce Macintosh, Bertrand Mennesson, Patrick Morrissey, Ilya Poberezhskiy, Hari Subedi, Jason Rhodes, Aki Roberge, Marie Ygouf, Robert Zellem, Feng Zhao, Neil Zimmerman

Proceedings Volume 12680, 126800T (2023) https://doi.org/10.1117/12.2679036

KEYWORDS: Coronagraphy, Equipment, Mirrors, Optical benches, Wavefront sensors, Deformable mirrors, Cameras, Prisms, Observatories, Wavefront errors

Read Abstract +

Proceedings Article | 29 August 2022 Poster + Paper

Absolute flux calibrations for the Nancy Grace Roman Space Telescope Coronagraph Instrument

Lindsey Payne, Robert Zellem, Marie Ygouf, Bruce Macintosh

Proceedings Volume 12188, 121884G (2022) https://doi.org/10.1117/12.2628627

KEYWORDS: Stars, Coronagraphy, Calibration, Space telescopes, Planets, Signal to noise ratio, Visibility, Monte Carlo methods, Optical filters, Standards development

Read Abstract +

Proceedings Article | 27 August 2022 Presentation + Paper

The Roman Space Telescope coronagraph technology demonstration: current status and relevance to future missions

B. Mennesson, V. Bailey, R. Zellem, S. Hildebrandt, M. Ygouf, J. Rhodes, N. Zimmerman, B. Nemati, G. Gonzalez, E. Cady, B. Kern, T. Koch, J. Krist, K. Heydorff, T. Luchik, F. Mok, P. Morrissey, I. Poberezhskiy, A. Riggs, F. Shi, F. Zhao, R. Akeson, L. Armus, A. Greenbaum, J. Ingalls, P. Lowrance

Proceedings Volume 12180, 121801W (2022) https://doi.org/10.1117/12.2629176

KEYWORDS: Coronagraphy, Wavefront sensors, Electron multiplying charge coupled devices, Imaging spectroscopy, Wavefronts, Stars, Spectroscopy, Performance modeling, Cameras, Observatories

Read Abstract +

Proceedings Article | 27 August 2022 Presentation + Paper

Nancy Grace Roman Space Telescope coronagraph instrument observation calibration plan

Robert Zellem, Bijan Nemati, Guillermo Gonzalez, Marie Ygouf, Vanessa Bailey, Eric Cady, M. Mark Colavita, Sergi Hildebrandt, Erin Maier, Bertrand Mennesson, Lindsey Payne, Neil Zimmerman, Ruslan Belikov, Robert De Rosa, John Debes, Ewan Douglas, Julien Girard, Tyler Groff, Jeremy Kasdin, Patrick Lowrance, Bruce Macintosh, Daniel Ryan, Carey Weisberg

Proceedings Volume 12180, 121801Z (2022) https://doi.org/10.1117/12.2627567

KEYWORDS: Calibration, Stars, Coronagraphy, Planets, Sensors, Polarization, Point spread functions, Error analysis, Signal to noise ratio, Uranus

Read Abstract +

Proceedings Article | 1 September 2021 Presentation + Paper

The Roman Space Telescope coronagraph technology demonstration: current status and relevance to future missions

B. Mennesson, V. P. Bailey, R. Zellem, N. Zimmerman, M. Ygouf, S. Hildebrandt, J. Rhodes, J. Kasdin, B. Macintosh, M. Turnbull, E. Douglas, A. Mandell, B. Nemati, G. Gonzalez, E. Cady, B. Kern, J. Krist, F. Shi, F. Mok, P. Morrissey, K. Heydorff, I. Pobereszhskiy, F. Zhao, T. Luchik, E. Maier, R. Akeson, L. Armus, J. Ingalls, P. Lowrance, T. Meshkat

Proceedings Volume 11823, 1182310 (2021) https://doi.org/10.1117/12.2603343

KEYWORDS: Coronagraphy, Electron multiplying charge coupled devices, Wavefront sensors, Cameras, Wavefronts, Imaging spectroscopy, Stars, Imaging systems, Spectroscopy, Polarimetry

Read Abstract +

Proceedings Article | 16 December 2020 Presentation + Paper

SPARCS payload assembly, integration, and test update

Paul Scowen, David Ardila, Logan Jensen, Johnathan Gamaunt, Shouleh Nikzad, April Jewell, Jim Austin, Matthew Beasley, Evgenya Shkolnik, Travis Barman, Judd Bowman, Varoujan Gorjian, Dawn Gregory, Daniel Jacobs, Joe Llama, Mary Knapp, Victoria Meadows, Sarah Peacock, Tahina Ramiaramanantsoa, Mark Swain, Peter Vedder, Lisa Whelan, Robert Zellem

Proceedings Volume 11444, 114440A (2020) https://doi.org/10.1117/12.2562582

KEYWORDS: Stars, Near ultraviolet, Custom fabrication, Optical fabrication, Integrated optics, Calibration, Light sources, Contamination control, Telescopes, Staring arrays

Read Abstract +

Proceedings Article | 15 December 2020 Presentation + Paper

The Nancy Grace Roman Space Telescope Coronagraph Instrument (CGI) technology demonstration

N. Jeremy Kasdin, Vanessa Bailey, Bertrand Mennesson, Robert Zellem, Marie Ygouf, Jason Rhodes, Thomas Luchik, Feng Zhao, A. J. Eldorado Riggs, Byoung-Joon Seo, John Krist, Brian Kern, Hong Tang, Bijan Nemati, Tyler Groff, Neil Zimmerman, Bruce Macintosh, Margaret Turnbull, John Debes, Ewan Douglas, Roxana Lupu

Proceedings Volume 11443, 114431U (2020) https://doi.org/10.1117/12.2562997

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

Read Abstract +

Proceedings Article | 9 September 2019 Presentation

WFIRST design reference mission: the coronagraph instrument (Conference Presentation)

Vanessa Bailey, Dmitry Savransky, John Debes, Bertrand Mennesson, Robert Zellem

Proceedings Volume 11117, 111170E (2019) https://doi.org/10.1117/12.2527942

KEYWORDS: Coronagraphy, Infrared telescopes, Visible radiation, Infrared imaging, Infrared radiation, Telescopes, Imaging systems, Spectrographs, Exoplanets, Calibration

Read Abstract +

Proceedings Article | 6 July 2018 Presentation + Paper

Monitoring the high-energy radiation environment of exoplanets around low-mass stars with SPARCS (Star-Planet Activity Research CubeSat)

Paul Scowen, Evgenya Shkolnik, David Ardila, Travis Berman, Matthew Beasley, Judd Bowman, Michael Fitzgerald, Varoujan Gorjian, Daniel Jacobs, April Jewell, Joe Llama, Victoria Meadows, Shouleh Nikzad, Constance Spittler, Mark Swain, Robert Zellem

Proceedings Volume 10699, 106990F (2018) https://doi.org/10.1117/12.2315543

KEYWORDS: Ultraviolet radiation, Stars, Atmospheric modeling, Space operations, Space telescopes, Planets, Telescopes, Sensors, Exoplanets, Control systems

Read Abstract +

Proceedings Article | 6 July 2018 Paper

The new NESSI: refurbishment of an NIR MOS for characterizing exoplanets using the Hale telescope

M. Creech-Eakman, M. Swain, R. Zellem, A. Olivares, C. Salcido, L. Schmidt, C. Jurgenson, K. Pearson, F. Santoro, G. Vasisht

Proceedings Volume 10702, 107023K (2018) https://doi.org/10.1117/12.2314242

KEYWORDS: Exoplanets, Cryogenics, Near infrared, Magdalena Ridge Observatory, Near infrared spectroscopy, Sensors

Read Abstract +

Showing 5 of 14 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