Mr. Bradley J. Frey Profile

Bradley J. Frey

at NASA Goddard Space Flight Ctr

SPIE Involvement:

Author

Publications (33)

Proceedings Article | 27 September 2013 Paper

Temperature-dependent refractive index measurements of S-FPL51, S-FTM16, and S-TIM28 to cryogenic temperatures

Douglas Leviton, Bradley Frey, Ross Henry

Proceedings Volume 8863, 886308 (2013) https://doi.org/10.1117/12.2024821

KEYWORDS: Infrared radiation, Space telescopes, Data modeling, Lens design, Glasses, Thermal optics, Cryogenics, Prisms, Refractive index, Temperature metrology

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Proceedings Article | 27 September 2013 Paper

Temperature-dependent refractive index of Cleartran ZnS to cryogenic temperatures

Douglas Leviton, Bradley Frey

Proceedings Volume 8863, 886307 (2013) https://doi.org/10.1117/12.2024817

KEYWORDS: Infrared radiation, Manufacturing, Data modeling, Prisms, Thermal optics, Chemical vapor deposition, Cryogenics, Zinc, Refractive index, Temperature metrology

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Proceedings Article | 22 August 2009 Paper

Trades for ambient non-contact metrology

R. Ohl, B. Hoffmann Eegholm, M. Casas, B. Frey, M. Dominguez, J. Gill, J. Hayden, P. Morken, K. Redman, V. Roberts, B. Saif, T. Scirpo

Proceedings Volume 7433, 743306 (2009) https://doi.org/10.1117/12.831303

KEYWORDS: Mirrors, Lawrencium, James Webb Space Telescope, Metrology, LIDAR, Cryogenics, Space telescopes, Glasses, Composites, Optical testing

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Proceedings Article | 2 September 2008 Paper

Optical metrology and alignment of the James Webb Space Telescope Integrated Science Instrument Module

Joseph Connelly, Brent Bos, Pamela Davila, William Eichhorn, Bradley Frey, John Hagopian, Jason Hylan, James Marsh, Douglas McGuffey, Joseph McMann, Maria Nowak, Raymond Ohl, Kevin Redman, Derek Sabatke, Henry Sampler, Joseph Stock, Joseph Sullivan, Gregory Wenzel, Geraldine Wright, Philip Young

Proceedings Volume 7068, 70680F (2008) https://doi.org/10.1117/12.798778

KEYWORDS: Interfaces, Optical alignment, James Webb Space Telescope, Metrology, Cryogenics, Mirrors, Photogrammetry, Optical components, Cameras, Optical tracking

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Proceedings Article | 28 July 2008 Paper

The wide-field imaging interferometry testbed (WIIT): recent progress and results

S. Rinehart, D. Leisawitz, B. Frey, R. Lyon, S. Maher, N. Memarsadeghi

Proceedings Volume 7013, 70132S (2008) https://doi.org/10.1117/12.787402

KEYWORDS: Interferometry, Interferometers, Data modeling, Data acquisition, Algorithm development, Mirrors, Metrology, Spatial resolution, Sensors, Cameras

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Proceedings Article | 12 July 2008 Paper

The Optical Telescope Element Simulator for the James Webb Space Telescope

Pamela Davila, Brent Bos, Edward Cheng, Bill Chang, William Eichhorn, Bradley Frey, Mario Garza, Qian Gong, Bradford Greeley, Jeff Guzek, Claef Hakun, Lars Hovmand, Jeff Kirk, David Kubalak, Douglas Leviton, Adrian Nagle, Rich Nyquist, Thai Pham, F. David Robinson, Derek Sabatke, Joseph Sullivan, Paul Volmer, Rob VonHandorf, Richard Youngworth

Proceedings Volume 7010, 70103F (2008) https://doi.org/10.1117/12.790402

KEYWORDS: Mirrors, Sensors, James Webb Space Telescope, Optical components, Optical alignment, Charge-coupled devices, Interfaces, Space telescopes, Device simulation, Electronics

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Proceedings Article | 21 September 2007 Paper

A scanning Hartmann focus test for the EUVI telescopes aboard STEREO

R. Ohl, S. Antonille, D. Aronstein, B. Dean, M. Delmont, J. d'Entremont, W. Eichhorn, B. Frey, S. Hynes, D. Janssen, D. Kubalak, K. Redman, R. Shiri, J. Smith, P. Thompson, M. Wilson

Proceedings Volume 6676, 66760G (2007) https://doi.org/10.1117/12.734655

KEYWORDS: Collimators, Telescopes, Space telescopes, Mirrors, Error analysis, Sensors, Ultraviolet radiation, Eye, Interferometers, Mendelevium

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Proceedings Article | 20 September 2007 Paper

The wide-field imaging interferometry testbed: enabling techniques for high angular resolution astronomy

S. Rinehart, T. Armstrong, Bradley Frey, J. Jung, J. Kirk, David Leisawitz, Douglas Leviton, R. Lyon, Stephen Maher, Anthony Martino, T. Pauls

Proceedings Volume 6687, 66870F (2007) https://doi.org/10.1117/12.734437

KEYWORDS: Interferometry, Interferometers, Data acquisition, Visibility, Algorithm development, Image restoration, Spatial resolution, Mirrors, Data modeling, Reconstruction algorithms

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Proceedings Article | 20 September 2007 Paper

An optical model of the wide-field imaging interferometry testbed

David Leisawitz, Anthony Martino, Anita Thompson, Stephen Rinehart, Bradley Frey

Proceedings Volume 6687, 66870J (2007) https://doi.org/10.1117/12.735145

KEYWORDS: Interferometry, Interferometers, Mirrors, Data modeling, Visibility, Hardware testing, Sensors, Performance modeling, Light, Imaging systems

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Proceedings Article | 17 September 2007 Paper

Optical alignment of the JWST ISIM to the OTE simulator (OSIM): current concept and design studies

Bradley Frey, Pamela Davila, John Hagopian, James Marsh, Raymond Ohl, Mark Wilson, Philip Young

Proceedings Volume 6692, 66920R (2007) https://doi.org/10.1117/12.736050

KEYWORDS: James Webb Space Telescope, Optical alignment, Cryogenics, Optical cryogenics, Space telescopes, Aerospace engineering, Space operations, Optical telescopes, Optical components, Device simulation

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Proceedings Article | 17 September 2007 Paper

Cryogenic temperature-dependent refractive index measurements of N-BK7, BaLKN3, SF15, and E-SF03

Bradley Frey, Douglas Leviton, Timothy Madison, Qian Gong, Matthias Tecza

Proceedings Volume 6692, 669205 (2007) https://doi.org/10.1117/12.735598

KEYWORDS: Refractive index, Cryogenics, Temperature metrology, Prisms, Optical cryogenics, Fourier transforms, Lens design, Refraction, Thermal optics

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Proceedings Article | 12 September 2007 Paper

Temperature-dependent refractive index of CaF2 and Infrasil 301

Douglas Leviton, Bradley Frey, Timothy Madison

Proceedings Volume 6692, 669204 (2007) https://doi.org/10.1117/12.735594

KEYWORDS: Temperature metrology, Refractive index, Data modeling, Cryogenics, Thermal optics, Silica, Calcium, Manufacturing, Refraction, Space operations

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Proceedings Article | 6 July 2006 Paper

The Fourier-Kelvin Stellar Interferometer: a low-complexity low-cost space mission for high-resolution astronomy and direct exoplanet detection

R. Barry, W. Danchi, L. Deming, L. Richardson, M. Kuchner, S. Seager, B. Frey, A. Martino, K. Lee, M. Zuray, J. Rajagopal, T. Hyde, R. Millan-Gabete, J. Monnier, R. Allen, W. Traub

Proceedings Volume 6265, 62651L (2006) https://doi.org/10.1117/12.672437

KEYWORDS: Sensors, Planets, Wavefronts, Interferometers, Control systems, Beam splitters, Space operations, Actuators, Astronomy, Signal detection

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Proceedings Article | 6 July 2006 Paper

Temperature-dependent absolute refractive index measurements of synthetic fused silica

Douglas Leviton, Bradley Frey

Proceedings Volume 6273, 62732K (2006) https://doi.org/10.1117/12.672853

KEYWORDS: Temperature metrology, Refractive index, Silica, Prisms, Thermal optics, Cryogenics, Photometry, James Webb Space Telescope, Interferometry, Space telescopes

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Proceedings Article | 6 July 2006 Paper

Temperature-dependent refractive index of silicon and germanium

Bradley Frey, Douglas Leviton, Timothy Madison

Proceedings Volume 6273, 62732J (2006) https://doi.org/10.1117/12.672850

KEYWORDS: Refractive index, Temperature metrology, Silicon, Germanium, Prisms, Thermal optics, Data modeling, Cryogenics, Optical components, Infrared radiation

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Proceedings Article | 29 June 2006 Paper

Calibration of the ZnSe pre-disperser on ESO's cryogenic IR echelle spectrograph (CRIRES): comparison of the first results from CRIRES and the laboratory data from CHARMS

Florian Kerber, Bradley Frey, Douglas Leviton, Paul Bristow, Hans-Ulrich Käufl, Jean Francois Pirard, Michael Rosa

Proceedings Volume 6269, 626942 (2006) https://doi.org/10.1117/12.670393

KEYWORDS: Data modeling, Prisms, Refractive index, Spectrographs, Calibration, Cryogenics, Temperature metrology, Space telescopes, Instrument modeling, Infrared spectroscopy

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Proceedings Article | 28 June 2006 Paper

The wide-field imaging interferometry testbed: recent results

S. Rinehart, T. Armstrong, Bradley Frey, J. Jung, J. Kirk, David Leisawitz, Douglas Leviton, R. Lyon, Anthony Martino, Lee Mundy, T. Pauls, A. Thompson

Proceedings Volume 6268, 626836 (2006) https://doi.org/10.1117/12.672110

KEYWORDS: Interferometry, Visibility, Algorithm development, Data acquisition, Reconstruction algorithms, Interferometers, Cameras, Fourier transforms, Space telescopes, Infrared telescopes

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Proceedings Article | 28 June 2006 Paper

Optical modeling of the wide-field imaging interferometry testbed

Anita Thompson, Anthony Martino, Stephen Rinehart, David Leisawitz, Douglas Leviton, Bradley Frey

Proceedings Volume 6268, 62682R (2006) https://doi.org/10.1117/12.672281

KEYWORDS: Mirrors, Interferometers, Interferometry, Visibility, Data modeling, Gaussian beams, Beam splitters, Integration, Point spread functions, Geometrical optics

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Proceedings Article | 13 June 2006 Paper

The Fourier-Kelvin Stellar Interferometer (FKSI) nulling testbed II: closed-loop path length metrology and control subsystem

B. Frey, R. Barry, W. Danchi, T. Hyde, K. Lee, A. Martino, M. Zuray

Proceedings Volume 6265, 62651N (2006) https://doi.org/10.1117/12.672467

KEYWORDS: Interferometers, Control systems, Sensors, Actuators, Metrology, Eye, Turbulence, Motion measurement, Detection and tracking algorithms, Signal detection

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Proceedings Article | 25 August 2005 Paper

Lithium fluoride material properties as applied on the NIRCam instrument

E. Kvamme, James Earthman, Douglas Leviton, Bradley Frey

Proceedings Volume 5904, 59040N (2005) https://doi.org/10.1117/12.614180

KEYWORDS: Laser induced fluorescence, Crystals, Lithium, James Webb Space Telescope, Anisotropy, Cryogenics, Refraction, Surface finishing, Polishing, Optics manufacturing

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Proceedings Article | 18 August 2005 Paper

Automation, operation, and data analysis in the cryogenic, high accuracy, refraction measuring system (CHARMS)

Bradley Frey, Douglas Leviton

Proceedings Volume 5904, 59040P (2005) https://doi.org/10.1117/12.619302

KEYWORDS: Sensors, Prisms, Computer programming, Temperature metrology, Refractive index, Monochromators, Data acquisition, Cryogenics, Image sensors, Mirrors

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Proceedings Article | 18 August 2005 Paper

High accuracy, absolute, cryogenic, refractive index measurements of infrared lens materials for JWST NIRCam using CHARMS

Douglas Leviton, Bradley Frey, Todd Kvamme

Proceedings Volume 5904, 59040O (2005) https://doi.org/10.1117/12.619306

KEYWORDS: Refractive index, Temperature metrology, Laser induced fluorescence, Thermal optics, Cryogenics, James Webb Space Telescope, Prisms, Infrared materials, Infrared radiation, Cameras

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Proceedings Article | 20 October 2004 Paper

The wide-field imaging interferometry testbed: II. Characterization and calibration

Stephen Rinehart, J. Armstrong, Bradley Frey, Jeff Kirk, David Leisawitz, Douglas Leviton, Luke Lobsinger, Richard Lyon, Anthony Martino, Thomas Pauls, Lee Mundy, E. Sears

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.552076

KEYWORDS: Visibility, Turbulence, Cameras, Interferometers, Interferometry, Light sources, Adaptive optics, Wavefronts, Light, Calibration

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Proceedings Article | 20 October 2004 Paper

The wide-field imaging interferometry testbed: I. progress, results, and future plans

Stephen Rinehart, J. Armstrong, Bradley Frey, Jeff Kirk, David Leisawitz, Douglas Leviton, Luke Lobsinger, Rick Lyon, Anthony Martino, Thomas Pauls, Lee Mundy, E. Sears

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551693

KEYWORDS: Interferometry, Interferometers, Data modeling, Image restoration, Mirrors, Reconstruction algorithms, Data acquisition, Space telescopes, Light sources, Fourier transforms

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Proceedings Article | 24 September 2004 Paper

Cryogenic High-Accuracy Refraction Measuring System (CHARMS): a new facility for cryogenic infrared through far-ultraviolet refractive index measurements

Douglas Leviton, Bradley Frey

Proceedings Volume 5494, (2004) https://doi.org/10.1117/12.563795

KEYWORDS: Cryogenics, Infrared radiation, Refractive index, Infrared imaging, Refraction, James Webb Space Telescope, Optical fabrication, Metrology, Space telescopes, Telescopes

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Proceedings Article | 15 October 2003 Paper

Thermal design considerations for the cryogenic high-accuracy refraction measuring system (CHARMS)

Douglas Leviton, Bradley Frey

Proceedings Volume 5172, (2003) https://doi.org/10.1117/12.518683

KEYWORDS: Prisms, Temperature metrology, Cryogenics, Computer programming, Optical isolators, Copper, Sensors, Polishing, Thermography, Refractive index

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Proceedings Article | 15 October 2003 Paper

Cryogenic high-accuracy absolute prism refractometer for infrared through far-ultraviolet optical materials: implementation and initial results

Bradley Frey, Ross Henry, Douglas Leviton, Manuel Quijada

Proceedings Volume 5172, (2003) https://doi.org/10.1117/12.506097

KEYWORDS: Cryogenics, Infrared radiation, Refraction, Prisms, Optical cryogenics, Refractive index, Infrared materials, Infrared imaging, Optical components, Optical design

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Proceedings Article | 11 March 2003 Paper

Sub-arcsecond differential deflectometry to measure thermally induced distortions of the Swift optical bench

Douglas Leviton, Brad Frey, Larry Madison, James Parker, Oren Sheinman

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.474308

KEYWORDS: Mirrors, Optical benches, Collimators, Charge-coupled devices, Collimation, X-ray telescopes, Optical testing, Space telescopes, CCD cameras, Deflectometry

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Proceedings Article | 5 March 2003 Paper

Ultrahigh-resolution absolute position sensors for cryostatic applications

Douglas Leviton, Brad Frey

Proceedings Volume 4850, (2003) https://doi.org/10.1117/12.461799

KEYWORDS: Computer programming, Image processing, Charge-coupled devices, Fiber optics, Digital signal processing, Cryogenics, Signal processing, Image compression, Mirrors, Image resolution

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Proceedings Article | 26 February 2003 Paper

Wide-field imaging interferometry testbed 3: metrology subsystem

Douglas Leviton, Brad Frey, David Leisawitz, Anthony Martino, William Maynard, Lee Mundy, Stephen Rinehart, Stacy Teng, Xiaolei Zhang

Proceedings Volume 4852, (2003) https://doi.org/10.1117/12.460948

KEYWORDS: Computer programming, Mirrors, Receivers, Sensors, Collimators, Beam splitters, Spindles, Servomechanisms, Reticles, Metrology

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Proceedings Article | 26 February 2003 Paper

Wide-field imaging interferometry testbed II: implementation, performance, and plans

Stephen Rinehart, Brad Frey, David Leisawitz, Douglas Leviton, Anthony Martino, William Maynard, Lee Mundy, Stacy Teng, Xiaolei Zhang

Proceedings Volume 4852, (2003) https://doi.org/10.1117/12.460705

KEYWORDS: Interferometry, Computing systems, Interferometers, Metrology, Cameras, Sensors, Data acquisition, Servomechanisms, Turbulence, Electronics

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Proceedings Article | 26 February 2003 Paper

Wide-field imaging interferometry testbed I: purpose, testbed design, data, and synthesis algorithms

David Leisawitz, Brad Frey, Douglas Leviton, Anthony Martino, William Maynard, Lee Mundy, Stephen Rinehart, Stacy Teng, Xiaolei Zhang

Proceedings Volume 4852, (2003) https://doi.org/10.1117/12.460704

KEYWORDS: Interferometers, Mirrors, Interferometry, Space telescopes, Michelson interferometers, Telescopes, Cameras, Detector arrays, Sensors, Infrared telescopes

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Proceedings Article | 30 January 2003 Paper

Design of a cryogenic high-accuracy absolute prism refractometer for infrared through far-ultraviolet optical materials

Douglas Leviton, Bradley Frey

Proceedings Volume 4842, (2003) https://doi.org/10.1117/12.459479

KEYWORDS: Prisms, Computer programming, Cryogenics, Mirrors, Refractive index, Cameras, Temperature metrology, Sensors, Infrared radiation, Monochromators

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Showing 5 of 33 publications

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