Dr. Jeffrey S. Newmark Profile

Dr. Jeffrey S. Newmark

Research Astrophysicist at NASA Goddard Space Flight Ctr

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Author

Publications (12)

Proceedings Article | 23 August 2024 Poster + Paper

Polarimetric characterization of the coronal diagnostic experiment (CODEX)

Marta Casti, Jeffrey Newmark, Yeon-Han Kim, Gerardo Capobianco, Hervé Haudemand, Donguk Song, Sung-Hong Park, Su-Chan Bong, Kyungsuk Cho, Seonghwan Choi, Qian Gong, Ji-Hye Baek, Jongyeob Park, Jihun Kim, Heesu Yang, Nelson Reginald, Nicholeen Viall, Silvano Fineschi, Federico Landini, Davide Loreggia, Luca Zangrilli, Lucia Abbo, Jason Budinoff

Proceedings Volume 13092, 130927O (2024) https://doi.org/10.1117/12.3020730

KEYWORDS: Polarization, Coronagraphy, Equipment, Polarimetry, Sensors, Demodulation, Polarized light, Modulation, Linear polarizers, Polarization imaging

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Proceedings Article | 23 August 2024 Presentation + Paper

CODEX optical design and alignment

Qian Gong, Jeffrey Newmark, Yeon-Han Kim, Marta Casti, Lucia Abbo, Ji-Hye Baek, Su-Chan Bong, Jason Budinoff, Gerado Capobianco, Kyungsuk Cho, Seonghwan Choi, Silvano Fineschi, Hervé Haudemand, Jihun Kim, Federico Landini, Davide Loreggia, Sung-Hong Park, Jongyeob Park, Nelson Reginald, Donguk Song, Heesu Yang, Luca Zangrilli

Proceedings Volume 13092, 130922I (2024) https://doi.org/10.1117/12.3020705

KEYWORDS: Diffraction, Coronagraphy, Optical alignment, Telescopes, Stray light, Cameras, Vignetting, Optical design

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The COronal Diagnostic EXperiment (CODEX) is a Heliophysics mission to measure the density, temperature, and velocity of the electrons in the solar corona with the primary goal of improving our understanding of the physical conditions of the solar wind in the acceleration region. The temperature and velocity measurement requires much higher signal-to-noise ratio than the density measurements. In solar coronagraphs, the diffraction of the solar disk light due to the occulting element is the dominant source of noise. Therefore, to further suppress the diffracted sun light with respect to the existing coronagraphs is a critical element of the CODEX design. To minimize the stray light due to diffraction, the selected optical design is a two-stage standard coronagraph with an external occulter, an internal occulter, and a Lyot stop. What is unique for this design is that a focal mask was inserted at the telescope focal plane. It works together with the field lens suppressing the stray light down by ~ another order of magnitude as compared to a traditional three-stage approach. During the optical design, a Fourier Transform based beam propagation software, i.e., GLAD, was used to model the beam path through the full coronagraph, from the external occulter to the detector array. All diffraction sensitive elements: external occulter, internal occulter, focal mask, and Lyot stop were carefully modeled and optimized. As a result, the requirement of achieving a stray light level which is one order of magnitude lower than F-corona was satisfied. On the other hand, to achieve the final suppression, a precision optical alignment is another must. This paper also presents our creative alignment procedure: using the combination of metrology, precision alignment equipment, and real time diffraction ring monitoring to minimize the diffraction. The final test results show that the suppression ratio (B/B0) reaches 10-11 level, which is equivalent to one order of magnitude lower than F-corona.

Proceedings Article | 27 August 2022 Presentation + Paper

The compact Doppler magnetograph (CDM) for solar polar missions and space weather research

Donald Hassler, Sanjay Gosain, Jean-Pierre Wuelser, Jack Harvey, Thomas Woods, Joseph Alexander, Doug Braun, Sarah Gibson, Viliam Klein, Ashley Flores, Rick Kohnert, Jeffrey Newmark, Steve Osterman, Mark Phillips, Thomas Rose, Michael Shoffner, Han Uitenbroek, Klaus Heerlein, Joachim Woch, Junwei Zhao

Proceedings Volume 12180, 121800K (2022) https://doi.org/10.1117/12.2630663

KEYWORDS: Code division multiplexing, Doppler effect, Space operations, Magnetism, Optical filters, Calibration, Sun, Interferometers, Mirrors, Sensors

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Proceedings Article | 1 August 2021 Poster + Paper

Analysis of the space radiation effects on liquid crystal variable retarders

Marta Casti, Jeffrey Newmark, Tom Baur, Sanjay Gosain, Donald Hassler, Brendan Michalicek, Daniel Phipps, Nelson Reginald, Alyson Topper, Connor Wolenski, Jean-Pierre Wuelser

Proceedings Volume 11814, 118140P (2021) https://doi.org/10.1117/12.2599607

KEYWORDS: Liquid crystals, Wave plates, Space operations, Time metrology, Aerospace engineering, Modulation, Polarization, Gamma radiation, Remote sensing

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Proceedings Article | 9 September 2019 Presentation + Paper

Innovative compact coronagraph approach for Balloon-borne Investigation of Temperature and Speed of Electrons in the corona (BITSE)

Qian Gong, Natchimuthuk Gopalswamy, Jeffrey Newmark

Proceedings Volume 11116, 111160F (2019) https://doi.org/10.1117/12.2530408

KEYWORDS: Coronagraphy, Diffraction, Vignetting, Signal to noise ratio, Point spread functions, Sensors, Polarization, Electrons, Solar processes, Temperature metrology

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Proceedings Article | 3 October 2007 Paper

STEREO: Heliospheric Imager design, pre-flight, and in-flight response comparison

Jean-Philippe Halain, Emmanuel Mazy, Jean-Marc Defise, Alexandra Mazzoli, Pierre Rochus, J. Daniel Moses, Jeffrey Newmark, Clarence Korendyke, Russ Howard, Simon Plunkett, Chris Eyles, Richard Harrison, Chris Davis

Proceedings Volume 6689, 668906 (2007) https://doi.org/10.1117/12.731098

KEYWORDS: Calibration, Sun, Cameras, Point spread functions, Sensors, Imaging systems, Space operations, Photometry, Optical calibration, Collimators

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Proceedings Article | 3 October 2007 Paper

HECOR: a HElium CORonagraphy aboard the Herschel sounding rocket

Frédéric Auchère, Marie-Françoise Ravet-Krill, John Moses, Frédéric Rouesnel, Jean-Pierre Moalic, Denis Barbet, Christophe Hecquet, Arnaud Jérome, Raymond Mercier, Jean-Christophe Leclec'h, Franck Delmotte, Jeffrey Newmark

Proceedings Volume 6689, 66890A (2007) https://doi.org/10.1117/12.751447

KEYWORDS: Coronagraphy, Reflectivity, Mirrors, Multilayers, Coating, Extreme ultraviolet, Helium, Solar processes, Rockets, Stray light

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Proceedings Article | 20 September 2007 Paper

The SECCHI experiment on STEREO

J. Newmark, J. Cook, J. Moses

Proceedings Volume 6689, 668902 (2007) https://doi.org/10.1117/12.747560

KEYWORDS: Curium, Space operations, Space telescopes, Coronagraphy, Telescopes, Sun, Observatories, Calibration, Iron, Analytical research

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Proceedings Article | 20 September 2007 Paper

In-orbit verification, calibration, and performance of the Heliospheric Imager on the STEREO mission

Chris Eyles, Chris Davis, Richard Harrison, Nick Waltham, Jean-Philippe Halain, Emmanuel Mazy, Jean-Marc Defise, Russ Howard, Dan Moses, Jeff Newmark, Simon Plunkett

Proceedings Volume 6689, 668907 (2007) https://doi.org/10.1117/12.732822

KEYWORDS: Cameras, Space operations, Curium, Sun, Charge-coupled devices, Calibration, CCD cameras, Solar processes, Imaging systems, Coronagraphy

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Proceedings Article | 4 February 2004 Paper

MAGRITTE: an instrument suite for the solar atmospheric imaging assembly (AIA) aboard the Solar Dynamics Observatory

Pierre Rochus, Jean-Marc Defise, Jean-Philippe Halain, Claude Jamar, Emmanuel Mazy, Laurence Rossi, Tanguy Thibert, Frederic Clette, Pierre Cugnon, David Berghmans, Jean-Francois Hochedez, Jean-Pierre Delaboudiniere, Frederic Auchere, Raymond Mercier, Marie-Francoise Ravet, Franck Delmotte, Mourad Idir, Udo Schuehle, Volker Bothmer, Silvano Fineschi, Russell Howard, John Moses, Jeffrey Newmark

Proceedings Volume 5171, (2004) https://doi.org/10.1117/12.503964

KEYWORDS: Extreme ultraviolet, Telescopes, Solar processes, Mirrors, Iron, Optical filters, Observatories, Space telescopes, Optical benches, Aluminum

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Proceedings Article | 4 February 2004 Paper

EUVI: the STEREO-SECCHI extreme ultraviolet imager

Jean-Pierre Wuelser, James Lemen, Theodore Tarbell, C. Wolfson, Joseph Cannon, Brock Carpenter, Dexter Duncan, Glenn Gradwohl, Syndie Meyer, Augustus Moore, Rosemarie Navarro, J. Pearson, George Rossi, Larry Springer, Russell Howard, John Moses, Jeffrey Newmark, Jean-Pierre Delaboudiniere, Guy Artzner, Frederic Auchere, Marie Bougnet, Philippe Bouyries, Francoise Bridou, Jean-Yves Clotaire, Gerard Colas, Franck Delmotte, Arnaud Jerome, Michel Lamare, Raymond Mercier, Michel Mullot, Marie-Francoise Ravet, Xueyan Song, Volker Bothmer, Werner Deutsch

Proceedings Volume 5171, (2004) https://doi.org/10.1117/12.506877

KEYWORDS: Mirrors, Telescopes, Space telescopes, Extreme ultraviolet, Charge-coupled devices, Optical filters, Calibration, Coating, Observatories, Sensors

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Proceedings Article | 18 December 2000 Paper

Calibration and flight of the NRL EIT CalRoc

Jeffrey Newmark, J. Daniel Moses, John Cook, Jean-Pierre Delaboudiniere, Xueyan Song, Charles Carabetian, Marie Bougnet, Jacqueline Brunaud, Jean-Marc Defise, Frederic Clette, Jean-Francois Hochedez

Proceedings Volume 4139, (2000) https://doi.org/10.1117/12.410532

KEYWORDS: Calibration, Extreme ultraviolet, Mirrors, Electroluminescent displays, Charge-coupled devices, Sensors, Multilayers, Solids, Optical coatings, Sun

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Showing 5 of 12 publications

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