Dr. Roger J. Thomas Profile

Dr. Roger J. Thomas

Astrophysicist at NASA Goddard Space Flight Ctr

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Author

Publications (18)

Proceedings Article | 13 June 2006 Paper

The extreme UV imaging spectrometer for the JAXA Solar-B mission

J. Culhane, G. Doschek, T. Watanabe, A. Smith, C. Brown, H. Hara, L. Harra, A. James, K. al Janabi, B. Kent, C. Korendyke, J. Lang, J. Mariska, S. Myers, J. Seely, G. Simnett, J. Tandy, R. Thomas, D. Windt

Proceedings Volume 6266, 62660T (2006) https://doi.org/10.1117/12.671262

KEYWORDS: Iron, Photons, Mirrors, Raster graphics, Spectroscopy, Charge-coupled devices, Plasma, Calibration, Space operations, Sun

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Proceedings Article | 27 September 2005 Paper

Spectro-imaging of the extreme-UV solar corona

Silvano Fineschi, J. Dan Moses, Roger Thomas

Proceedings Volume 5901, 590114 (2005) https://doi.org/10.1117/12.617659

KEYWORDS: Coronagraphy, Ultraviolet radiation, Spectrographs, Imaging spectroscopy, Mirrors, Solar processes, Telescopes, Optical design, Off axis mirrors, Spectroscopy

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Proceedings Article | 8 September 2005 Paper

Narrow-band EUV multilayer coating for the MOSES sounding rocket

Scott Owens, Jeffery Gum, Charles Tarrio, Steven Grantham, Joseph Dvorak, Benjawan Kjornrattanawanich, Ritva Keski-Kuha, Roger Thomas, Charles Kankelborg

Proceedings Volume 5900, 590003 (2005) https://doi.org/10.1117/12.617520

KEYWORDS: Coating, Reflectivity, Extreme ultraviolet, Multilayers, Silicon, Reflection, Iron, Spectrographs, Rockets, Optical design

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Proceedings Article | 12 October 2004 Paper

Solar ultraviolet spectro-coronagraph with toroidal varied line-space (TVLS) grating

Silvano Fineschi, Clarence Korendyke, J. Dan Moses, Roger Thomas

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.549417

KEYWORDS: Ultraviolet radiation, Coronagraphy, Imaging spectroscopy, Spectrographs, Telescopes, Mirrors, Solar processes, Space telescopes, Optical design, Sensors

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Proceedings Article | 11 October 2004 Paper

Elliptical varied line-space (EVLS) gratings

Roger Thomas

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.552131

KEYWORDS: Spectrographs, Extreme ultraviolet, Optical design, Telescopes, Space telescopes, Sensors, Spectrometers, Solar processes, Sun, Space operations

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Proceedings Article | 11 October 2004 Paper

Design of the extreme-ultraviolet spectrometer for imaging spectroscopy on the Solar Orbiter mission

Luca Poletto, Anna Gasparotto, Giuseppe Tondello, Roger Thomas

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.551211

KEYWORDS: Spectroscopy, Telescopes, Spatial resolution, Mirrors, Sensors, Sun, Extreme ultraviolet, Spectral resolution, Reflectivity, Optical design

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Proceedings Article | 11 October 2004 Paper

The Marshall Space Flight Center solar ultraviolet magnetograph

Edward West, Jason Porter, John Davis, G. Gary, Matthew Noble, Matthew Lewis, Roger Thomas

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.563524

KEYWORDS: Polarization, Ultraviolet radiation, Mirrors, Wave plates, Magnetism, Telescopes, Dielectric polarization, Space telescopes, Spectrographs, Cameras

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Proceedings Article | 11 February 2003 Paper

Toroidal varied-line-space (TVLS) gratings

Roger Thomas

Proceedings Volume 4853, (2003) https://doi.org/10.1117/12.460375

KEYWORDS: Spectrographs, Extreme ultraviolet, Optical design, Telescopes, Sensors, Space telescopes, Rockets, Spectroscopy, Spectral resolution, Magnesium

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Proceedings Article | 10 December 2001 Paper

Simultaneous imaging and spectroscopy of the solar atmosphere: advantages and challenges of a 3-order slitless spectrograph

Charles Kankelborg, Roger Thomas

Proceedings Volume 4498, (2001) https://doi.org/10.1117/12.450074

KEYWORDS: Imaging spectroscopy, Spectrographs, Sensors, Solar processes, Extreme ultraviolet, Aerospace engineering, Spectroscopy, Doppler effect, Coronagraphy, Data modeling

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Proceedings Article | 10 December 2001 Paper

EUNIS: a solar EUV normal-incidence spectrometer

Roger Thomas, Joseph Davila

Proceedings Volume 4498, (2001) https://doi.org/10.1117/12.450072

KEYWORDS: Extreme ultraviolet, Solar processes, Sensors, Spectroscopy, Coronagraphy, Telescopes, Spatial resolution, Calibration, Space telescopes, Spectral resolution

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Proceedings Article | 18 December 2000 Paper

Overview of the Solar Ultraviolet Magnetograph Investigation

Edward West, Jason Porter, John Davis, G. Gary, Douglas Rabin, Roger Thomas, Joseph Davila

Proceedings Volume 4139, (2000) https://doi.org/10.1117/12.410534

KEYWORDS: Ultraviolet radiation, Polarization, Mirrors, Wave plates, Magnetism, Rockets, Solar processes, Optical design, Telescopes, Dielectric polarization

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Proceedings Article | 25 June 1998 Paper

Manufacture and testing of x-ray optical elements for the TEREK-C and RES-C instruments on the CORONAS-I mission

Alexander Ignatiev, Nikolai Kolachevsky, Viatcheslav Korneev, Viktor Krutov, Sergey Kuzin, Alexander Mitrofanov, Andrey Pertzov, Eugene Ragozin, Vladimir Slemzin, Igor Tindo, Igor Zhitnik, Nikolai Salashchenko, Roger Thomas

Proceedings Volume 3406, (1998) https://doi.org/10.1117/12.310981

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Proceedings Article | 25 November 1996 Paper

Conceptual design for a solar instrument on the proposed Spartan Lite spacecraft

Michael Amato, Roger Thomas, Joseph Davila, Ronald Polidan

Proceedings Volume 2804, (1996) https://doi.org/10.1117/12.259704

KEYWORDS: Space operations, Electronics, Solar processes, Extreme ultraviolet, Spectral resolution, Satellites, Spectrographs, Control systems, Sensors, Optical design

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Proceedings Article | 16 October 1995 Paper

Coronal Diagnostic Spectrometer: an extreme-ultraviolet spectrometer for the Solar and Heliospheric Observatory

Barry Kent, Richard Harrison, Eric Sawyer, R. Hayes, Anthony Richards, J. Leonard Culhane, K. Norman, A. Breeveld, P. Thomas, Arthur Poland, Roger Thomas, William Thompson, Bernd Aschenbach, Heinrich Braeuninger, O. Kjeldseth-Moe, Mikhael Kuehne, Joerg Hollandt, W. Paustian, B. Bromage

Proceedings Volume 2517, (1995) https://doi.org/10.1117/12.224918

KEYWORDS: Spectroscopy, Diagnostics, Solar processes, Extreme ultraviolet, Cadmium sulfide, Observatories, Plasmas, Spectrometer engineering, Spatial resolution, Temporal resolution

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Proceedings Article | 16 October 1995 Paper

Some design and performance features of SUMER: solar ultraviolet measurements of emitted radiation

Klaus Wilhelm, W. Curdt, E. Marsh, Udo Schuehle, Philippe Lemaire, Alan Gabriel, Jean-Claude Vial, Michael Grewing, Martin Huber, S. Jordan, Arthur Poland, Roger Thomas, Mikhael Kuehne, J. Gethyn Timothy, Donald Hassler, Oswald Siegmund

Proceedings Volume 2517, (1995) https://doi.org/10.1117/12.224908

KEYWORDS: Solar processes, Ultraviolet radiation, Solar radiation, Spatial resolution, Structural design, Coronagraphy, Temperature metrology, Observatories, Telescopes, Doppler effect

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Proceedings Article | 1 February 1994 Paper

Evaluation of EUV toroidal diffraction gratings for SOHO/Coronal Diagnostic Spectrometer

Rene Boucarut, Douglas Leviton, Roger Thomas, Timothy Madison

Proceedings Volume 2011, (1994) https://doi.org/10.1117/12.167223

KEYWORDS: Sensors, Diffraction gratings, Extreme ultraviolet, Cadmium sulfide, Spectroscopy, Spectral resolution, Light sources, Lamps, Diagnostics, Ray tracing

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Proceedings Article | 1 January 1992 Paper

Rocket flight of a multilayer-coated high-density EUV toroidal grating

Ritva Keski-Kuha, Roger Thomas, Joseph Davila

Proceedings Volume 1546, (1992) https://doi.org/10.1117/12.51263

KEYWORDS: Multilayers, Coating, Extreme ultraviolet, Rockets, Spectrographs, Spectral resolution, Space telescopes, Telescopes, Diffraction gratings, Grazing incidence

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Proceedings Article | 1 February 1991 Paper

EUV performance of a multilayer-coated high-density toroidal grating

Ritva Keski-Kuha, Roger Thomas, Werner Neupert, Charles Condor, Jeffrey Gum

Proceedings Volume 1343, (1991) https://doi.org/10.1117/12.23233

KEYWORDS: Multilayers, Coating, Extreme ultraviolet, Diffraction gratings, Spectrographs, Spectral resolution, Reflectivity, Astronomy, Astronomical imaging, X-ray optics

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Showing 5 of 18 publications

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