Dr. Patrick Morrissey Profile

Dr. Patrick Morrissey

Physicist at Jet Propulsion Lab

SPIE Involvement:

Author

Area of Expertise:

optics , spectroscopy , detectors , astronomy

Profile Summary

I am a physicist specializing in the development of instrumentation for astronomy at the NASA Jet Propulsion Laboratory. I currently hold the position of Instrument System Engineer. I managed the development of the photon counting camera systems for the Roman Coronagraph Instrument, a flight technology development. I was also the Project Scientist and optical designer for the Keck Cosmic Web Imager, a facility instrument of the W. M. Keck Observatory in Hawaii. I was previously Co-Investigator for the NASA GALEX Small Explorer satellite, which surveyed the UV sky for 10 years from 2003-2013, and for which I was awarded a NASA engineering medal in 2008. I enjoy challenging instrumentation programs for astronomy and planetary space missions, with a focus on flight implementation.

Publications (30)

Proceedings Article | 6 October 2023 Presentation

Presentation

Flight photon counting camera development for the Roman Space Telescope Coronagraph Instrument

Patrick Morrissey, Nathan Bush, Michael Hoenk, Gillian Kyne, Andrew Lamborn, Jocelyn Letona

Proceedings Volume 12680, 126800X (2023) https://doi.org/10.1117/12.2677681

KEYWORDS: Equipment, Cameras, Photon counting, Coronagraphy, Space telescopes, Stars, Planets, Imaging technologies, Exoplanets, Electron multiplying charge coupled devices

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Proceedings Article | 5 October 2023 Poster + Paper

Poster + Paper

The extendable boom and laser metrology design for the high energy x-ray probe (HEX-P)

Kristin Madsen, Patrick Morrissey, Miles Smith, Daniel Stern, Mike McEachen, Marc Lane, Alex Abramovici

Proceedings Volume 12678, 126781H (2023) https://doi.org/10.1117/12.2677749

KEYWORDS: Metrology, Point spread functions, Laser metrology, X-rays, Space operations, Laser systems engineering, Observatories, Mirrors, Design and modelling, Space mirrors

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Proceedings Article | 5 October 2023 Presentation + Paper

Presentation + Paper

The high-energy x-ray probe (HEX-P)

Diogo Coutinho, Kirpal Nandra, Peter Predehl, Steve Kenyon, Paul Markie, William Zhang, Stefano Basso, Giovanni Pareschi, Daniele Spiga, Giuseppe Valsecchi, Dervis Vernani, Saptarshi Bandyopadhyay, Guillem Casadesus Vila, Steve Franklin, William Johnson, Mike McEachen, Alberto Moretti, Johannes Müeller-Seidlitz, Patrick Morrissey, Kristin Madsen, Rashied Amini, Sharon Kedar, Marc Lane, Karen Lee, Miles Smith, Daniel Stern, Steven Zusack, Jonathan Arenberg, Alex Abramovici, Douglas Dawson, Brian Grefenstette, Lance McCreary, Jeff Rodgers, Rafael Strecker, Lea Dauner

Proceedings Volume 12678, 126780H (2023) https://doi.org/10.1117/12.2676988

KEYWORDS: Design and modelling, Space operations, Cameras, Mirrors, X-rays, Telescopes, Sensors, Metrology, Astronomical instrumentation

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Proceedings Article | 5 October 2023 Poster + Paper

Poster + Paper

Background simulations for the high energy x-ray probe (HEX-P)

Kristin Madsen, Henrike Fleischhack, Andreas Zoglauer, Brian Grefenstette, Daniel Stern, Jonathan Arenberg, Benjamin Donovan, Patrick Morrissey, Daniel Violette

Proceedings Volume 12678, 126781B (2023) https://doi.org/10.1117/12.2676891

KEYWORDS: Particles, Simulations, X-rays, Equipment, Design and modelling, Attenuation, Telescopes, Sensors

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Proceedings Article | 5 October 2023 Presentation + Paper

Presentation + Paper

Nancy Grace Roman Space Telescope coronagraph instrument overview and status

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

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

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SPIE Journal Paper | 19 March 2023 Open Access

Open Access

Flight photon counting electron multiplying charge coupled device development for the Roman Space Telescope coronagraph instrument

Patrick Morrissey, Leon Harding, Nathan Bush, Michael Bottom, Bijan Nemati, Andrew Daniel, Bongim Jun, Luz Maria Martinez-Sierra, Niyati Desai, Dave Barry, Rhonda-Topaz Davis, Richard Demers, David Hall, Andrew Holland, Pete Turner, Brian Shortt

JATIS, Vol. 9, Issue 01, 016003, (March 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.1.016003

KEYWORDS: Electron multiplying charge coupled devices, Design and modelling, Photon counting, Sensors, Cameras, Dark current, Imaging systems, Quantum efficiency, Tunable filters, Image sensors

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We describe the development of flight electron multiplying charge coupled devices (EMCCDs) for the photon-counting camera system of a coronagraph instrument (CGI) to be flown on the 2.4-m Nancy Grace Roman Space Telescope. Roman is a NASA flagship mission that will study dark energy and dark matter, and search for exoplanets with a planned launch in the mid-2020s. The CGI is intended to demonstrate technologies required for high-contrast imaging and spectroscopy of exoplanets, such as high-speed wavefront sensing and pointing control, adaptive optics with deformable mirrors, and ultralow noise signal detection with photon counting, visible-sensitive (350 to 950 nm) detectors. The camera system is at the heart of these demonstrations and is required to sense both faint and bright targets (10 − 4 − 107 counts-s − 1) adaptively at up to 1000 frames-s − 1 to provide the necessary feedback to the instrument control loops. The system includes two identical cameras, one to demonstrate faint light scientific capability, and the other to provide high-speed real-time sensing of instrument pointing disturbances. Our program at the Jet Propulsion Laboratory (Pasadena, California, United States) has evaluated the low-signal performance of radiation-damaged commercial EMCCD sensors and used those measurements as a basis for targeted radiation hardening modifications developed in partnership with the Open University (Milton Keynes, United Kingdom) and Teledyne-e2v (Chelmsford, United Kingdom). A pair of EMCCDs with test features was then developed and their low signal performance is reported here. The program has resulted in the development of a flight version of the EMCCD with low signal performance improved by more than a factor of three over the commercial one after exposure to 2.6 × 109 protons-cm − 2 (10 MeV equivalent). The flight EMCCD sensors are contributed by ESA through a contract with Teledyne-e2v (Chelmsford, United Kingdom). We will describe the program requirements, sensor design, test results and metrics used to evaluate photon counting performance.

Proceedings Article | 27 August 2022 Presentation + Paper

Presentation + Paper

Roman coronagraph instrument: engineering overview and status

Ilya Poberezhskiy, Kathryn Heydorff, Thomas Luchik, Feng Zhao, Eric Cady, Brandon Creager, Brian Monacelli, Patrick Morrissey, Joshua Kempenaar, John Krist, Fai Mok, Jeffrey Oseas, A.J. Riggs, Fang Shi, Belinda Shreckengost, Dorothy Lewis, Charley Noecker, Mark Colavita, Renaud Goullioud, Tyler Groff, Brian Kern, Matthew King, Timothy Koch, Gary Kuan, Jonathan Lam, David Muliere, Bijan Nemati, Gasia Bedrosian, Amanda Grue

Proceedings Volume 12180, 121801X (2022) https://doi.org/10.1117/12.2630540

KEYWORDS: Coronagraphy, Electronics, Cameras, Interfaces, Mirrors, Control systems, Optical alignment, Observatories, Space operations, Optical benches

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Proceedings Article | 27 August 2022 Presentation + Paper

Presentation + Paper

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

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

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

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Proceedings Article | 27 August 2022 Poster + Paper

Poster + Paper

Nancy Grace Roman Space Telescope coronagraph EMCCD flight camera electronics development

Olivier Daigle, James Veilleux, Frédéric Grandmont, Patrick Morrissey, Christophe Basset, Nathan Bush, Michael Hoenk, Adam Gilbert, Jérémy Turcotte, Abtin Ghodoussi

Proceedings Volume 12180, 1218064 (2022) https://doi.org/10.1117/12.2626242

KEYWORDS: Electron multiplying charge coupled devices, Clocks, Electronics, Cameras, Field programmable gate arrays, Coronagraphy, Analog electronics, Wavefront sensors, Sensors, Photon counting

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Proceedings Article | 1 September 2021 Presentation + Paper

Presentation + Paper

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

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

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

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Proceedings Article | 12 January 2021 Presentation + Paper

Presentation + Paper

Roman space telescope coronagraph: engineering design and operating concept

Renaud Goullioud, Timothy Koch, John Steeves, Thomas Luchik, Fai Mok, Ilya Poberezhskiy, Margaret Frerking, Feng Zhao, Eric Cady, Brian Kern, A.J. Riggs, John Krist, Hong Tang, Fang Shi, M. Mark Colavita, Bijan Nemati, Tyler Groff, Patrick Morrissey, Belinda Shreckengost, Brandon Creager, Joshua Kempenaar, Scott Basinger, Nanaz Fathpour, Byoung-Joon Seo, David Muliere

Proceedings Volume 11443, 114431V (2021) https://doi.org/10.1117/12.2563480

KEYWORDS: Infrared telescopes, James Webb Space Telescope, Telescopes, Coronagraphy, Infrared radiation, Instrumentation engineering, Optical instrument design, Wavefronts, Imaging spectroscopy, Infrared imaging

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Proceedings Article | 13 December 2020 Presentation

Presentation

Controlling EMCCD charge handling capacity through customized clocking

Patrick Morrissey, Michael Hoenk, Gillian Kyne, Nathan Bush

Proceedings Volume 11454, 114541Q (2020) https://doi.org/10.1117/12.2579360

KEYWORDS: Electron multiplying charge coupled devices, Sensors, Image enhancement, Control systems, Charge-coupled devices, Target detection, Switches, Single photon, Signal detection, Photon counting

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Proceedings Article | 9 September 2019 Presentation

Presentation

Flight photon counting EMCCDs for the WFIRST coronagraph (Conference Presentation)

Patrick Morrissey

Proceedings Volume 11117, 111170J (2019) https://doi.org/10.1117/12.2529758

KEYWORDS: Coronagraphy, Photon counting, Electron multiplying charge coupled devices, Sensors, Planets, Signal detection, Cameras, CCD cameras, Exoplanets, Imaging technologies

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Proceedings Article | 16 July 2018 Presentation + Paper

Presentation + Paper

WFIRST coronagraph flight performance modeling

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, John Krist

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

Photon counting EMCCD developments for the WFIRST coronagraph (Conference Presentation)

David Hall, Ross Burgon, Andrew Holland, Patrick Morrissey, Leon Harding, Michael Bottom, Rick Demers, Bobby Effinger, Don Nieraeth, Larry Hovland, Yuki Maruyama, Bijan Nemati, Nathan Bush

Proceedings Volume 10709, 107090B (2018) https://doi.org/10.1117/12.2309387

KEYWORDS: Electron multiplying charge coupled devices, Coronagraphy, Photon counting, Sensors, Planets, Cameras, CCD cameras, Exoplanets, Imaging technologies, Stars

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Proceedings Article | 6 July 2018 Presentation + Paper

Presentation + Paper

WFIRST coronagraph detector trap modeling results and improvements

Andrew Clarke, Robert Effinger, Bijan Nemati, Maxime Rizzo, Patrick Morrissey, Leon Harding, Michael Bottom, Donald Pontrelli, Richard Demers, Nathan Bush, David Hall, Andrew Holland

Proceedings Volume 10709, 1070917 (2018) https://doi.org/10.1117/12.2311408

KEYWORDS: Sensors, Signal attenuation, Point spread functions, Coronagraphy, TCAD, Exoplanets, Signal detection, Charge-coupled devices, Electron multiplying charge coupled devices, Instrument modeling

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Proceedings Article | 6 July 2018 Paper

Paper

Smartphone scene generator for efficient characterization of visible imaging detectors

Michael Bottom, Leo Neat, Patrick Morrissey, Leon Harding, Seth Meeker, Richard Demers

Proceedings Volume 10709, 107092R (2018) https://doi.org/10.1117/12.2312335

KEYWORDS: Sensors, Point spread functions, Image sensors, Electron multiplying charge coupled devices, Organic light emitting diodes, RGB color model, Cameras, Calibration, Light emitting diodes, Photometry, Scene simulation, Tracking and scene analysis

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Proceedings Article | 1 August 2016 Paper

Paper

The effect of radiation-induced traps on the WFIRST coronagraph detectors

Bijan Nemati, David Hall, Leon Harding, Richard Demers, Robert Effinger, Patrick Morrissey, Nathan Bush, Jesper Skottfelt

Proceedings Volume 9915, 99150M (2016) https://doi.org/10.1117/12.2235278

KEYWORDS: Sensors, Charge-coupled devices, Electrons, Exoplanets, Coronagraphy, Electrodes, Electron multiplying charge coupled devices, Planets, Image quality, Electronic imaging

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Proceedings Article | 1 August 2016 Paper

Paper

The faint intergalactic-medium red-shifted emission balloon: future UV observations with EMCCDs

Erika Hamden, D. Christopher Martin, Shouleh Nikzad, Gillian Kyne, Nicole Lingner, Patrick Morrissey

Proceedings Volume 9915, 991507 (2016) https://doi.org/10.1117/12.2232879

KEYWORDS: Electron multiplying charge coupled devices, Clocks, Charge-coupled devices, Sensors, Image storage, Ultraviolet radiation, Telescopes, Spectrographs, Temperature metrology, Galactic astronomy

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Proceedings Article | 18 September 2015 Paper

Paper

Noise and dark performance for FIREBall-2 EMCCD delta-doped CCD detector

Erika Hamden, Nicole Lingner, Gillian Kyne, Patrick Morrissey, D. Christopher Martin

Proceedings Volume 9601, 96010O (2015) https://doi.org/10.1117/12.2190679

KEYWORDS: Clocks, Electron multiplying charge coupled devices, Sensors, Charge-coupled devices, Image storage, Microchannel plates, CCD image sensors, Copper, Ultraviolet radiation, Quantum efficiency

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Proceedings Article | 24 September 2012 Paper

Paper

The Keck Cosmic Web Imager: a capable new integral field spectrograph for the W. M. Keck Observatory

James D. Neill, Jack Davis, Harland Epps, Christoph Pistor, Sean Adkins, Connie Rockosi, Anna Moore, Drew Phillips, Jason Fucik, Patrick Morrissey, Dave Cowley, Randy Bartos, Mateusz Matuszewski, Chris Martin, Steve Kaye, Nicole Lingner, Alex Delacroix, Jerry Cabak, Ean James, Bob Weber, David Hilliard

Proceedings Volume 8446, 844613 (2012) https://doi.org/10.1117/12.924729

KEYWORDS: Telescopes, Cameras, Mirrors, Spectrographs, Keck Observatory, Observatories, Imaging systems, Spectral resolution, Sensors, Charge-coupled devices

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Proceedings Article | 20 July 2010 Paper

Paper

The Keck Cosmic Web Imager

Chris Martin, Shahinur Rahman, Anna Moore, Harland Epps, Mateusz Matuszewski, Patrick Morrissey, Sean Adkins

Proceedings Volume 7735, 77350M (2010) https://doi.org/10.1117/12.858227

KEYWORDS: Galactic astronomy, Cameras, Stars, Spectral resolution, Charge-coupled devices, Telescopes, Sensors, Mirrors, Imaging systems, Kinematics

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Proceedings Article | 15 July 2010 Paper

Paper

The Cosmic Web Imager: an integral field spectrograph for the Hale Telescope at Palomar Observatory: instrument design and first results

Daphne Chang, D. Christopher Martin, Patrick Morrissey, Robert Crabill, Mateusz Matuszewski, Shahinur Rahman, Anna Moore

Proceedings Volume 7735, 77350P (2010) https://doi.org/10.1117/12.856644

KEYWORDS: Mirrors, Telescopes, Calibration, Electroluminescent displays, Sensors, Imaging systems, Spectrographs, Observatories, Optics manufacturing, Charge-coupled devices

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Proceedings Article | 20 June 2006 Paper

Paper

A novel low-voltage electron-bombarded CCD readout

Janet Sheung, Jordanna Blacksberg, Michael Hoenk, Todd Jones, Shouleh Nikzad, L. Douglass Bell, Chris Martin, Patrick Morrissey, Steve Kaye

Proceedings Volume 6266, 626610 (2006) https://doi.org/10.1117/12.673208

KEYWORDS: Charge-coupled devices, Electrons, Gallium nitride, Sensors, Quantum efficiency, Ultraviolet radiation, Cameras, Back illuminated sensors, Silicon, Cesium

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Proceedings Article | 13 June 2006 Paper

Paper

A GALEX instrument overview and lessons learned

Patrick Morrissey

Proceedings Volume 6266, 62660Y (2006) https://doi.org/10.1117/12.671839

KEYWORDS: Sensors, Microchannel plates, Stars, Space operations, Electronics, Ultraviolet radiation, Photometry, Satellites, Clocks, Space telescopes

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Proceedings Article | 11 October 2004 Paper

Paper

The GALEX mission and detectors

Todd Small, Karl Forster, Patrick Morrissey, Barry Madore, Barry Welsh, Roger Malina, Patrick Jelinsky, Thomas Barlow, Christopher Martin, Susan Neff, Luciana Bianchi, Michael Rich, Peter Friedman, Oswald Siegmund, Bruno Milliard, David Schiminovich, Alexander Szalay, Ted Wyder, Yong-Ik Byun

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.561488

KEYWORDS: Sensors, Ultraviolet radiation, Stars, Galactic astronomy, Microchannel plates, Imaging spectroscopy, Quantum efficiency, Electronics, Spectroscopy, Telescopes

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Proceedings Article | 24 February 2003 Paper

Paper

The Galaxy Evolution Explorer

C. Kevin Xu, Robert Grange, David Griffiths, Timothy Conrow, Dominique Bruno, Joseph Stock, Timothy Weigand, Siu-Chun Lee, Patrick Wu, Sug-Whan Kim, Young-Wook Lee, Joseph Bushman, James Fanson, Patrick Morrissey, Dankai Liu, Michael Rich, Luciana Bianchi, William Barnhart, Frederic Raison, Barry Welsh, William Mitchell, Michael Chiville, Alexander Szalay, Arthur Vaughan, Peter Friedman, Bruno Milliard, Roger Malina, Brian Cooke, Wes Schmitigal, Marco Morais, Alan Mazer, Amit Sen, Frank Surber, David Randall, James Lee, Timothy Heckman, Ryan McLean, Jennifer Zsoldas, Oswald Siegmund, Yong-Ik Byun, Barry Madore, Brian Blakkolb, Jose Donas, David Schiminovich, Karl Forster, Todd Small, Ted Wyder, Susan Neff, Christopher Martin, Thomas Barlow, Patrick Jelinsky

Proceedings Volume 4854, (2003) https://doi.org/10.1117/12.460034

KEYWORDS: Sensors, Galactic astronomy, Space operations, Ultraviolet radiation, Imaging spectroscopy, Space telescopes, Telescopes, Spectroscopy, Satellites, Electronics

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Proceedings Article | 24 February 2003 Paper

Paper

Performance results of the GALEX cross delay line detectors

Patrick Morrissey, Peter Friedman, Ted Wyder, Sharon Jelinsky, David Schiminovich, Christopher Martin, Oswald Siegmund, James Malloy, Karl Forster, Patrick Jelinsky

Proceedings Volume 4854, (2003) https://doi.org/10.1117/12.460013

KEYWORDS: Sensors, Quantum efficiency, Microchannel plates, Calibration, Spatial resolution, Ultraviolet radiation, Astrophysics, Telescopes, Galaxy evolution, Photons

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Proceedings Article | 25 November 1999 Paper

Paper

Photon-counting intensified random-access charge injection device

Patrick Morrissey, J. Haas, Joseph Carbone, Timothy Norton, Leslie Payne, Randy Kimble

Proceedings Volume 3764, (1999) https://doi.org/10.1117/12.371087

KEYWORDS: Microchannel plates, Sensors, Spatial resolution, Image resolution, Photon counting, Ultraviolet radiation, Imaging systems, Detector development, Field programmable gate arrays, Charge-coupled devices

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Proceedings Article | 28 August 1998 Paper

Paper

Photon-counting-intensified CID detector for space astronomy

Timothy Norton, Randy Kimble, Patrick Morrissey

Proceedings Volume 3356, (1998) https://doi.org/10.1117/12.324457

KEYWORDS: Sensors, Microchannel plates, Image processing, Cameras, Imaging systems, Image resolution, Photon counting, Spatial resolution, Astronomy, Ultraviolet astronomy

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Showing 5 of 30 publications

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