Dr. Robert A. Woodruff Profile

Dr. Robert A. Woodruff

at Woodruff Consulting

SPIE Involvement:

Author

Publications (80)

Proceedings Article | 4 October 2023 Poster + Paper

Linear polarizer design for application in the far-ultraviolet spectral range

Mateo Batkis, Manuel Quijada, Paul Scowen, Robert Woodruff, Luis Rodriguez de Marcos, Javier del Hoyo, Johnathan Gamaunt

Proceedings Volume 12676, 1267612 (2023) https://doi.org/10.1117/12.2676820

KEYWORDS: Polarizers, Polarization, Mirrors, Laser induced fluorescence, Design and modelling, Far ultraviolet, Optical testing, Mineralogy, Silicon carbide, Refractive index

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Proceedings Article | 31 August 2022 Poster + Paper

Solar Transition Region Ultraviolet Explorer (STRUVE) pointing performance modeling

Angelica Berner, Alfred de Wijn, Mads Krabbe Jepsen, Paul Scowen, Johnathan Gamaunt, Robert Woodruff

Proceedings Volume 12181, 121813S (2022) https://doi.org/10.1117/12.2630789

KEYWORDS: Polarimetry, Error analysis, Polarization, Performance modeling, Line of sight pointing

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Proceedings Article | 31 August 2022 Presentation + Paper

Design drivers for the Polstar spectropolarimeter: an FUV/NUV design achieving high spectral resolving power with precise 4-Stokes measurements

Robert Woodruff, Coralie Neiner, Roberto Casini, Gopal Vasudevan, Tony Hull, Paul Scowen

Proceedings Volume 12181, 121810C (2022) https://doi.org/10.1117/12.2629556

KEYWORDS: Polarization, Mirrors, Staring arrays, Wave plates, Prisms, Calibration, Spectroscopy, Spectral resolution, Sensors, Stars

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Proceedings Article | 31 August 2022 Poster + Paper

Optical design of LUVIS for a SMEX mission

Robert Woodruff, Stephen Kendrick, Tony Hull, Daewook Kim, Gopal Vasudevan, Sara Heap

Proceedings Volume 12181, 121812R (2022) https://doi.org/10.1117/12.2629549

KEYWORDS: Sensors, Spectroscopy, Diffraction gratings, Optical design, Mirrors, Microchannel plates, Calibration, Monochromatic aberrations, Space operations, Ultraviolet radiation

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Proceedings Article | 31 August 2022 Poster + Paper

Calibration approach for the Polstar spectropolarimeter

Gopal Vasudevan, Robert Woodruff, Kirstin Doney, Coralie Neiner, Roberto Casini, Mark Sullivan, Paul Scowen, Tony Hull, Alison Nordt

Proceedings Volume 12181, 1218139 (2022) https://doi.org/10.1117/12.2630553

KEYWORDS: Calibration, Mirrors, Polarization, Spectral calibration, Prisms, Telescopes, Modulators, Spectroscopy, Lamps, Polarimetry

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Proceedings Article | 31 August 2022 Presentation + Paper

The Lyman-UV imaging spectrograph: a SMEX mission concept

Sara Heap, Tony Hull, Steve Kendrick, Robert Woodruff

Proceedings Volume 12181, 1218107 (2022) https://doi.org/10.1117/12.2630315

KEYWORDS: Spectrographs, Reflectivity

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Proceedings Article | 31 August 2022 Poster + Paper

Solar Transition Region Ultraviolet Explorer (STRUVE) requirements flow down to design

Johnathan Gamaunt, Angelica Berner, Alfred de Wijn, Paul Scowen, Robert Woodruff

Proceedings Volume 12181, 121813R (2022) https://doi.org/10.1117/12.2630386

KEYWORDS: Magnetism, Iron, Polarization, Solar processes, Solar energy, Signal to noise ratio, Magnesium, Plasma, Space operations

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Proceedings Article | 31 August 2022 Presentation + Paper

The Polstar high resolution spectropolarimetry MIDEX mission

Paul Scowen, Richard Ignace, Ken Gayley, Gopal Vasudevan, Robert Woodruff, Coralie Neiner, Scott Richardson, Alison Nordt, Tony Hull, Shouleh Nikzad, Charles Shapiro

Proceedings Volume 12181, 1218106 (2022) https://doi.org/10.1117/12.2630103

KEYWORDS: Stars, Polarization, Polarimetry, Ultraviolet radiation, Staring arrays, Calibration, Mirrors, Spectroscopy, Spectral resolution, Modulators

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Proceedings Article | 31 August 2022 Poster + Paper

LUVIS: an ultraviolet SMEX mission optimized for the Lyman UV

Stephen Kendrick, Robert Woodruff, Tony Hull, Daewook Kim, Gopal Vasudevan, Sara Heap

Proceedings Volume 12181, 121812W (2022) https://doi.org/10.1117/12.2629641

KEYWORDS: Ultraviolet radiation, Sensors, Microchannel plates, Galactic astronomy, Optical coatings, Optical design, Spectrographs, Mirrors, Telescopes

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Proceedings Article | 24 August 2021 Presentation + Paper

Design drivers for the PolStar telescope and UV spectropolarimeter instrument

Matthew Gilbertson, R. Woodruff, Alyssa Ruiz, Mark Sullivan, Gopal Vasudevan, Ken Lorell, Ariana Reyes, Kirstin Doney, Larry Sokolsky, Tony Hull, Paul Scowen, Alison Nordt

Proceedings Volume 11820, 118200G (2021) https://doi.org/10.1117/12.2594798

KEYWORDS: Mirrors, Telescopes, Polarization, Staring arrays, Optical instrument design, Modulators, Spectral resolution, Prisms, Stars, Sensors

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Proceedings Article | 24 August 2021 Presentation + Paper

Cosmic evolution through UV surveys (CETUS): point spread function analysis of three mirror anastigmat telescope

Jaren Ashcraft, Heejoo Choi, Sara Heap, Robert Woodruff, Dae Wook Kim

Proceedings Volume 11820, 118200H (2021) https://doi.org/10.1117/12.2598879

KEYWORDS: Mirrors, Point spread functions, Diffraction, Ultraviolet radiation, Telescopes, Hubble Space Telescope, Surface finishing, Observatories, Ultraviolet telescopes, Monochromatic aberrations

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Proceedings Article | 20 August 2021 Presentation + Paper

The Polstar High Resolution Spectropolarimetry MIDEX Mission

Paul Scowen, Ken Gayley, Coralie Neiner, Gopal Vasudevan, Robert Woodruff, Richard Ignace, Roberto Casini, Tony Hull, Alison Nordt, H. Philip Stahl

Proceedings Volume 11819, 1181908 (2021) https://doi.org/10.1117/12.2594267

KEYWORDS: Polarization, Stars, Mirrors, Spectral resolution, Polarimetry, Prisms, Calibration, Wave plates, Ultraviolet radiation, Staring arrays

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The Polstar mission will provide for a space-borne 60cm telescope operating at UV wavelengths with spectropolarimetric capability capturing all four Stokes parameters (intensity, two linear polarization components, and circular polarization). Polstar’s capabilities are designed to meet its goal of determining how circumstellar gas flows alter massive stars' evolution, and finding the consequences for the stellar remnant population and the stirring and enrichment of the interstellar medium, by addressing four key science objectives. In addition, Polstar will determine drivers for the alignment of the smallest interstellar grains, and probe the dust, magnetic fields, and environments in the hot diffuse interstellar medium, including for the first time a direct measurement of the polarized and energized properties of intergalactic dust. Polstar will also characterize processes that lead to the assembly of exoplanetary systems and that affect exoplanetary atmospheres and habitability. Science driven design requirements include: access to ultraviolet bands: where hot massive stars are brightest and circumstellar opacity is highest; high spectral resolution: accessing diagnostics of circumstellar gas flows and stellar composition in the far-UV at 122-200nm, including the NV, SiIV, and CIV resonance doublets and other transitions such as NIV, AlIII, HeII, and CIII; polarimetry: accessing diagnostics of circumstellar magnetic field shape and strength when combined with high FUV spectral resolution and diagnostics of stellar rotation and distribution of circumstellar gas when combined with low near-UV spectral resolution; sufficient signal-to-noise ratios: ~103 for spectropolarimetric precisions of 0.1% per exposure; ~102 for detailed spectroscopic studies; ~10 for exploring dimmer sources; and cadence: ranging from 1-10 minutes for most wind variability studies, to hours for sampling rotational phase, to days or weeks for sampling orbital phase. The ISM and exoplanet science program will be enabled by these capabilities driven by the massive star science.

Proceedings Article | 13 December 2020 Presentation + Paper

Progress report on the NASA probe mission concept, CETUS

S. R. Heap, B. Fleming, T. Hull, S. Kendrick, A. Kutyrev, R. A. Woodruff

Proceedings Volume 11444, 1144408 (2020) https://doi.org/10.1117/12.2562715

KEYWORDS: Ultraviolet radiation, Ultraviolet telescopes, Telescopes, Astrophysics, Large telescopes, Space telescopes, James Webb Space Telescope, Hubble Space Telescope, Space operations

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Proceedings Article | 9 September 2019 Presentation + Paper

Science capabilities enabled by the CETUS NUV multi-object spectrometer and NUV/FUV camera and the driving technologies

Stephen Kendrick, Robert Woodruff, Tony Hull, Sara Heap, Alexander Kutyrev

Proceedings Volume 11115, 1111504 (2019) https://doi.org/10.1117/12.2529790

KEYWORDS: Cameras, Astronomical imaging, Spectroscopy, Ultraviolet radiation, Molybdenum, Sensors, Spectroscopes, Optical arrays, Optical coatings, Galactic astronomy

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Proceedings Article | 12 July 2019 Open Access

Conceptual approaches to the study of efficient bandpass filter design for ultraviolet spaceborne instruments

U. Brauneck, A. Hull, R. Woodruff, J. Sanchez, D. Apitz, T. Westerhoff

Proceedings Volume 11180, 111804K (2019) https://doi.org/10.1117/12.2536083

KEYWORDS: Bandpass filters, Optical filters, Reflection, Digital filtering, Antireflective coatings, Silica, Solids, Ultraviolet radiation, Dielectric filters, Image filtering

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SPIE Journal Paper | 3 May 2019 Open Access

Optical design for CETUS: a wide-field 1.5-m aperture UV payload being studied for a NASA probe class mission study

Robert Woodruff, William Danchi, Sara Heap, Tony Hull, Stephen Kendrick, Lloyd Purves, Michael Rhee, Eric Mentzell, Brian Fleming, Marty Valente, James Burge, Ben Lewis, Kelly Dodson, Greg Mehle, Matt Tomic

JATIS, Vol. 5, Issue 02, 024006, (May 2019) https://doi.org/10.1117/12.10.1117/1.JATIS.5.2.024006

KEYWORDS: Mirrors, Content addressable memory, Molybdenum, Sensors, Image quality, Optical design, Spectrographs, Optical alignment, Spectral resolution, Silicon

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Proceedings Article | 18 July 2018 Presentation

Planetary science capabilities of a UV-visible balloon-borne telescope as a function of wavefront error (Conference Presentation)

Eliot Young, Brian Catanzaro, Nicolas Gorius, Robert Woodruff, Monica Hoffmann, Jeffrey Juergens

Proceedings Volume 10700, 107001H (2018) https://doi.org/10.1117/12.2314323

KEYWORDS: Space telescopes, Telescopes, Planetary science, Wavefronts, Point spread functions, Satellites, Spatial resolution, Ultraviolet radiation, Visible radiation, Clouds

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Several classes of planetary science observations require high spatial resolution in UV and visible wavelengths. Key examples include (a) the detection of satellites and characterization of their orbits, (b) the discovery of faint and small objects among the NEO, asteroid, Kuiper belt or Sedna-like populations and (c) cloud or trace gas observations in planetary atmospheres. Hubble Space Telescope (HST) observations have been very productive in these areas: consider the recent discovery of Makemake's satellite (Parker et al., 2016), the discovery of 2014 MU69 (now the flyby target of the New Horizons spacecraft) or the OPAL (Outer Planet Atmospheres Legacy) program. Like HST, large-aperture ground-based telescopes with adaptive optics can also achieve spatial resolutions of 50 mas, but normally at wavelengths longer than ~1 μm. Projects like MagAO-2K are working on improving image quality at visible wavelengths, but while the core PSF (Point Spread Function) width might be narrow (projected to be 15 mas at the Magellan telescope), the Strehl ratio drops steeply with wavelength (Males et al., 2016). Not all science goals suffer equally from low Strehl ratios, however: cloud tracking on Venus is more tolerant of a low Strehl ratio than searching for a close satellite of Makemake. A telescope on a NASA super-pressure balloon would float above 99.3% of the atmosphere, where the inner Fried parameter is thought to be two meters or more. While atmospheric turbulence is not expected to impact image quality, there are other sources of wavefront error (WFE), such as mirror figuring, misalignment of the OTA (Optical Telescope Assembly) or asymmetric heating from the Sun or Earth. We reference recent work that estimates balloon telescope WFEs from different sources to generate a suite of plausible PSFs. We apply these PSFs to the UV and visible wavelength science cases outlined in the GHAPS/SIDT report (Gondola for High Altitude Planetary Science/Science Instrument Definition Team). We quantify the impact that WFE has on achieving the planetary observations outlined in the SIDT report.

Proceedings Article | 11 July 2018 Paper

Low light level quadriwave lateral shearing interferometer for in-situ wavefront sensing

Brian Catanzaro, Benoit Wattellier, Ekaterina Boldyreva, Eliot Young, Michael Lewis, Jeffrey Juergens, Robert Woodruff, Monica Hoffmann

Proceedings Volume 10703, 107035J (2018) https://doi.org/10.1117/12.2312331

KEYWORDS: Wavefronts, Stars, Wavefront sensors, Mirrors, Telescopes, Optical instrument design, Sensors, Space telescopes, Shearing interferometers, Observatories

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Proceedings Article | 10 July 2018 Presentation + Paper

STOP modeling in support of a 1-meter aperture balloon based telescope

Brian Catanzaro, Thomas Brooks, Will Johnson, Brian O'Connor, Robert Woodruff, Ryan Edwards, Evan Racine, Lucas Paganini, Eliot Young, Nicolas Gorius, Leigh Elrod, Monica Hoffmann

Proceedings Volume 10705, 1070515 (2018) https://doi.org/10.1117/12.2312312

KEYWORDS: Finite element methods, Integrated modeling, Mirrors, Telescopes, Space telescopes, Optical instrument design, Wavefronts, Error analysis, Infrared telescopes, Observatories

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Proceedings Article | 6 July 2018 Paper

Theoretical study of filter design for UV-bandpass filters for the CETUS probe mission study

U. Brauneck, R. Woodruff, S. Heap, S. Kendrick

Proceedings Volume 10699, 106993D (2018) https://doi.org/10.1117/12.2315049

KEYWORDS: Optical filters, Bandpass filters, Digital filtering, Reflection, Antireflective coatings, Silica, Solids, Ultraviolet radiation, Imaging spectroscopy, Spectroscopes

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Proceedings Article | 6 July 2018 Paper

Image guider subsystem analysis for the GHAPS project

Michael Lewis, Jeffrey Juergens, Eliot Aretskin-Hariton, Robert Woodruff

Proceedings Volume 10702, 107025D (2018) https://doi.org/10.1117/12.2313994

KEYWORDS: Stars, Image sensors, Cameras, Indium gallium arsenide, Sensors, Signal to noise ratio, Airglow, Telescopes, Visible radiation, Error analysis

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Proceedings Article | 6 July 2018 Paper

UV capabilities of the CETUS multi-object spectrometer (MOS) and NUV/FUV camera

Stephen Kendrick, Robert Woodruff, Tony Hull, Sara Heap, Alexander Kutyrev, William Danchi, Lloyd Purves

Proceedings Volume 10699, 1069939 (2018) https://doi.org/10.1117/12.2314114

KEYWORDS: Cameras, Galactic astronomy, Ultraviolet radiation, Optical filters, Charge-coupled devices, CCD image sensors, Carbon nanotubes, Astronomical spectrometers

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Proceedings Article | 5 September 2017 Presentation + Paper

Multiplexing in astrophysics with a UV multi-object spectrometer on CETUS, a probe-class mission study

Stephen Kendrick, Robert Woodruff, Tony Hull, Sara Heap, Alexander Kutyrev, William Danchi, Lloyd Purves

Proceedings Volume 10401, 1040111 (2017) https://doi.org/10.1117/12.2286681

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Proceedings Article | 5 September 2017 Presentation + Paper

The NASA probe-class mission concept, CETUS (Cosmic Evolution Through Ultraviolet Spectroscopy)

Sara Heap, William Danchi, James Burge, Kelly Dodson, Anthony Hull, Steven Kendrick, Stephan McCandliss, Gregory Mehle, Lloyd Purves, David Sheikh, Martin Valente, Robert Woodruff

Proceedings Volume 10398, 103980U (2017) https://doi.org/10.1117/12.2274202

KEYWORDS: Space telescopes, Telescopes, Ultraviolet radiation, Spectrographs, Imaging spectroscopy, Ultraviolet telescopes, Astronomical imaging, Cameras, Optical instrument design, UV-Vis spectroscopy

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Proceedings Article | 5 September 2017 Paper

Optical design for CETUS: a wide-field 1.5m aperture UV payload being studied for a NASA probe class mission study

Robert Woodruff, Tony Hull, Sara Heap, William Danchi, Stephen Kendrick, Lloyd Purves

Proceedings Volume 10401, 104011P (2017) https://doi.org/10.1117/12.2286680

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Proceedings Article | 21 September 2012 Paper

Characterization of habitable exoplanets with simultaneous coronagraphy and astrometry with a single aperture telescope

Olivier Guyon, Eduardo Bendek, S. Mark Ammons, Michael Shao, Stuart Shaklan, Robert Woodruff, Ruslan Belikov, Thomas Milster

Proceedings Volume 8442, 84420K (2012) https://doi.org/10.1117/12.927196

KEYWORDS: Stars, Coronagraphy, Telescopes, Exoplanets, Diffraction, Space telescopes, Planets, Sensors, Calibration, Mirrors

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Proceedings Article | 15 September 2011 Paper

Diffractive pupil telescope for high precision space astrometry

Olivier Guyon, Eduardo Bendek, Mark Ammons, Michael Shao, Stuart Shaklan, Robert Woodruff, Ruslan Belikov

Proceedings Volume 8151, 81510S (2011) https://doi.org/10.1117/12.894302

KEYWORDS: Stars, Telescopes, Coronagraphy, Space telescopes, Calibration, Planets, Mirrors, Diffraction, Sensors, Exoplanets

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Proceedings Article | 3 September 2010 Paper

Cryogenic performance of a high precision photogrammetry system for verification of the James Webb Space Telescope Integrated Science Instrument Module and associated ground support equipment structural alignment requirements

Maria Nowak, Paul Cleveland, Emmanuel Cofie, J. Allen Crane, Pamela Davila, Bente Eegholm, Randolph Hammond, James Heaney, Jason Hylan, John Johnston, Raymond Ohl, Joseph Orndorff, Dean Osgood, Kevin Redman, Henry Sampler, Stephen Smee, Joseph Stock, Felix Threat, Robert Woodruff, Philip Young

Proceedings Volume 7793, 77930A (2010) https://doi.org/10.1117/12.862595

KEYWORDS: Cryogenics, Photogrammetry, Metrology, James Webb Space Telescope, Optical alignment, Interfaces, Cameras, Space telescopes, Optical components, Observatories

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Proceedings Article | 11 August 2010 Paper

Design and implementation of the NUV/optical widefield Star Formation Camera for the Theia Observatory

Paul Scowen, Rolf Jansen, Matthew Beasley, Daniella Calzetti, Steve Desch, Alex Fullerton, John Gallagher, P. Douglas Lisman, Steven Macenka, Sangeeta Malhotra, Mark McCaughrean, Shouleh Nikzad, Robert O'Connell, Sally Oey, Deborah Padgett, James Rhoads, Aki Roberge, Oswald H. W. Siegmund, Stuart Shaklan, Nathan Smith, Daniel Stern, Jason Tumlinson, Rogier Windhorst, Robert Woodruff

Proceedings Volume 7731, 77314Y (2010) https://doi.org/10.1117/12.857475

KEYWORDS: Sensors, Galactic astronomy, Stars, Cameras, Staring arrays, Imaging systems, Space telescopes, Silicon, Optical filters, Astronomy

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Proceedings Article | 6 August 2010 Paper

Optical design of dilute aperture visible nulling coronagraph imaging (DAViNCI)

Robert Woodruff, Michael Shao, B. Martin Levine, Richard Lyon, Gopal Vasudevan, Jun Acu, Keith Havey, Jeff Wynn

Proceedings Volume 7731, 77312A (2010) https://doi.org/10.1117/12.857711

KEYWORDS: Telescopes, Spectrometers, Imaging systems, Mirrors, Space telescopes, Staring arrays, Prisms, Planets, Interferometers, Nulling interferometry

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Proceedings Article | 6 August 2010 Paper

Visible nulling coronagraphy testbed development for exoplanet detection

Richard Lyon, Mark Clampin, Robert Woodruff, Gopal Vasudevan, Patrick Thompson, Andrew Chen, Peter Petrone, Andrew Booth, Timothy Madison, Matthew Bolcar, M. Charley Noecker, Stephen Kendrick, Gary Melnick, Volker Tolls

Proceedings Volume 7731, 77312B (2010) https://doi.org/10.1117/12.857472

KEYWORDS: Wavefronts, Coronagraphy, Nulling interferometry, Beam splitters, Planets, Space telescopes, Cameras, Algorithm development, Telescopes, Reflectivity

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Proceedings Article | 6 August 2010 Paper

Single aperture imaging astrometry with a diffracting pupil: application to exoplanet mass measurement with a small coronagraphic space telescope

Olivier Guyon, Michael Shao, Stuart Shaklan, Marie Levine, S. Mark Ammons, Eduardo Bendek, Robert Woodruff, Bijan Nemati, Joe Pitman

Proceedings Volume 7731, 77312C (2010) https://doi.org/10.1117/12.857902

KEYWORDS: Space telescopes, Coronagraphy, Telescopes, Stars, Diffraction, Exoplanets, Infrared telescopes, Cameras, Planets, Infrared radiation

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Proceedings Article | 6 August 2010 Paper

Feasibility of exoplanet coronagraphy with the Hubble Space Telescope

Richard Lyon, Robert Woodruff, Robert Brown, M. Charley Noecker, Edward Cheng

Proceedings Volume 7731, 773111 (2010) https://doi.org/10.1117/12.857518

KEYWORDS: Coronagraphy, Planets, Stars, Exoplanets, Point spread functions, Space telescopes, Telescopes, Mirrors, Hubble Space Telescope, Databases

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Proceedings Article | 26 August 2009 Paper

Observatory conceptual development for the Joint Dark Energy Mission

Michael Sholl, Gary Bernstein, David Content, Michael Dittman, Joseph Howard, Michael Lampton, John Lehan, J. Eric Mentzell, Robert Woodruff

Proceedings Volume 7436, 743603 (2009) https://doi.org/10.1117/12.828116

KEYWORDS: Telescopes, Monochromatic aberrations, Point spread functions, Baryon acoustic oscillations, Galactic astronomy, Space telescopes, Near infrared, Imaging systems, Spectroscopy, Imaging spectroscopy

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Proceedings Article | 26 August 2009 Paper

Visible nulling coronagraph testbed results

Richard Lyon, Mark Clampin, Robert Woodruff, Gopal Vasudevan, Patrick Thompson, Peter Petrone, Timothy Madison, Maxime Rizzo, Gary Melnick, Volker Tolls

Proceedings Volume 7440, 744011 (2009) https://doi.org/10.1117/12.827423

KEYWORDS: Planets, Coronagraphy, Nulling interferometry, Algorithm development, Image segmentation, Visible radiation, Optical filters, Phase shifts, Stars, Point spread functions

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Proceedings Article | 20 August 2009 Paper

Balloon exoplanet nulling interferometer (BENI)

Richard Lyon, Mark Clampin, Robert Woodruff, Gopal Vasudevan, Holland Ford, Larry Petro, Jay Herman, Stephen Rinehart, Kenneth Carpenter, Joe Marzouk

Proceedings Volume 7440, 74401A (2009) https://doi.org/10.1117/12.827411

KEYWORDS: Planets, Interferometers, Telescopes, Stars, Digital signal processing, Sensors, Exoplanets, Mirrors, Wavefronts, Cameras

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Proceedings Article | 20 August 2009 Paper

Detecting and characterizing exoplanets with a 1.4-m space telescope: the Pupil mapping Exoplanet Coronagraphic Observer (PECO)

Olivier Guyon, James R. Angel, Ruslan Belikov, Robert Egerman, Donald Gavel, Amir Give'on, Thomas Greene, Kerri Cahoy, Brian Kern, Marie Levine, Stephen Ridgway, Stuart Shaklan, Domenick Tenerelli, Robert Vanderbei, Robert Woodruff

Proceedings Volume 7440, 74400F (2009) https://doi.org/10.1117/12.826350

KEYWORDS: Coronagraphy, Space telescopes, Telescopes, Wavefronts, Exoplanets, Planets, Mirrors, Stars, Apodization, Optical design

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Proceedings Article | 2 September 2008 Paper

Verification of the James Webb Space Telescope Integrated Science Instrument Module cryogenic structural alignment requirements via photogrammetry

Maria Nowak, Paul Cleveland, Allen Crane, Pamela Davila, Acey Herrera, Jason Hylan, Andrew Liehr, James Marsh, Raymond Ohl, Kevin Redman, Henry Sampler, Joseph Stock, Greg Wenzel, Robert Woodruff, Philip Young

Proceedings Volume 7068, 70680Q (2008) https://doi.org/10.1117/12.798791

KEYWORDS: Cameras, Cryogenics, Photogrammetry, James Webb Space Telescope, Distortion, Error analysis, Metrology, Calibration, Received signal strength, Optical alignment

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Proceedings Article | 28 July 2008 Paper

DAVINCI, a diluter aperture visible nulling coronagraphic instrument

M. Shao, S. Bairstow, B. Martin Levine, Gautam Vasisht, Benjamin Lane, Gopal Vasudevan, Robert Woodruff, Rocco Samuele, Jeffrey Wynn, Mark Clampin, Richard Lyon, Olivier Guyon

Proceedings Volume 7013, 70132T (2008) https://doi.org/10.1117/12.789767

KEYWORDS: Stars, Telescopes, Planets, Coronagraphy, Space telescopes, Interferometers, Nulling interferometry, Space operations, Oxygen, Jupiter

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Proceedings Article | 12 July 2008 Paper

Precision attitude determination for an infrared space telescope

Dominic Benford, Tod Lauer, Robert Woodruff, Roel van Bezooijen, Gopal Vasudevan

Proceedings Volume 7010, 70104A (2008) https://doi.org/10.1117/12.789919

KEYWORDS: Stars, Infrared telescopes, Space telescopes, Point spread functions, Device simulation, Motion measurement, Cameras, Monte Carlo methods, Charge-coupled devices, Infrared radiation

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Proceedings Article | 12 July 2008 Paper

The Star Formation Observatory (SFO) mission to study cosmic origins near and far

Paul Scowen, Rolf Jansen, Matthew Beasley, Brian Cooke, Shouleh Nikzad, Oswald Siegmund, Robert Woodruff, Daniela Calzetti, Steven Desch, Alex Fullerton, John Gallagher, Sangeeta Malhotra, Mark McCaughrean, Robert O'Connell, Sally Oey, Debbie Padgett, James Rhoads, Aki Roberge, Nathan Smith, Daniel Stern, Jason Tumlinson, Rogier Windhorst

Proceedings Volume 7010, 70103Z (2008) https://doi.org/10.1117/12.788038

KEYWORDS: Stars, Galactic astronomy, Sensors, Spectroscopy, Imaging spectroscopy, Observatories, Quantum efficiency, Microchannel plates, Silicon, Planets

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Proceedings Article | 12 July 2008 Paper

Pupil mapping Exoplanet Coronagraphic Observer (PECO)

Olivier Guyon, James Angel, Dana Backman, Ruslan Belikov, Donald Gavel, Amir Giveon, Thomas Greene, Jeremy Kasdin, James Kasting, Marie Levine, Mark Marley, Michael Meyer, Glenn Schneider, Gene Serabyn, Stuart Shaklan, Michael Shao, Motohide Tamura, Domenick Tenerelli, Wesley Traub, John Trauger, Robert Vanderbei, Robert Woodruff, Neville Woolf, Jeffrey Wynn

Proceedings Volume 7010, 70101Y (2008) https://doi.org/10.1117/12.790080

KEYWORDS: Coronagraphy, Planets, Wavefronts, Telescopes, Stars, Exoplanets, Mirrors, Apodization, Space telescopes, Wavefront sensors

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Proceedings Article | 12 July 2008 Paper

Extrasolar Planetary Imaging Coronagraph (EPIC): visible nulling cornagraph testbed results

Richard Lyon, Mark Clampin, Gary Melnick, Volker Tolls, Robert Woodruff, Gopal Vasudevan

Proceedings Volume 7010, 701045 (2008) https://doi.org/10.1117/12.789700

KEYWORDS: Planets, Coronagraphy, Nulling interferometry, Wavefronts, Beam splitters, Interferometers, Point spread functions, Space telescopes, Telescopes, Phase shifts

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Proceedings Article | 12 July 2008 Paper

Cryogenic pupil alignment test architecture for the James Webb Space Telescope integrated science instrument module

Brent Bos, David Kubalak, Scott Antonille, Raymond Ohl, John Hagopian, Pamela Davila, Joseph Sullivan, Michael Sánchez, Derek Sabatke, Robert Woodruff, Maurice te Plate, Clinton Evans, Victor Isbrucker, Stephen Somerstein, Martyn Wells, Samuel Ronayette

Proceedings Volume 7010, 70103C (2008) https://doi.org/10.1117/12.789808

KEYWORDS: James Webb Space Telescope, Mirrors, Sensors, Observatories, Optical components, Reflectivity, Cryogenics, Stray light, Beam splitters, Infrared telescopes

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Proceedings Article | 20 September 2007 Paper

DESTINY: the dark energy space telescope

Bert Pasquale, Robert Woodruff, Tod Lauer, Dominic Benford

Proceedings Volume 6687, 66870Q (2007) https://doi.org/10.1117/12.735180

KEYWORDS: Space telescopes, Calibration, Sensors, Mirrors, Space operations, Staring arrays, Optical filters, Bandpass filters, Telescopes, Galactic astronomy

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Proceedings Article | 19 September 2007 Paper

TOPS: a small space telescope using phase induced-amplitude apodization (PIAA) to image rocky and giant exo-planets

Olivier Guyon, James R. P. Angel, Charles Bowers, James Burge, Adam Burrows, Johanan Codona, Thomas Greene, Masanori Iye, James Kasting, Hubert Martin, Donald McCarthy, Victoria Meadows, Michael Meyer, Eugene Pluzhnik, Norman Sleep, Motohide Tamura, Domenick Tenerelli, Robert Vanderbei, Bruce Woodgate, Robert Woodruff, Neville Woolf

Proceedings Volume 6693, 66930J (2007) https://doi.org/10.1117/12.735160

KEYWORDS: Coronagraphy, Planets, Telescopes, Wavefronts, Stars, Apodization, Mirrors, Space telescopes, Wavefront sensors, Optics manufacturing

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Proceedings Article | 7 July 2006 Paper

Telescope to Observe Planetary Systems (TOPS): a high throughput 1.2-m visible telescope with a small inner working angle

Olivier Guyon, James R. Angel, Charles Bowers, James Burge, Adam Burrows, Johanan Codona, Thomas Greene, Masanori Iye, James Kasting, Hubert Martin, Donald McCarthy, Jr., Victoria Meadows, Michael Meyer, Eugene Pluzhnik, Norman Sleep, Tony Spears, Motohide Tamura, Domenick Tenerelli, Robert Vanderbei, Bruce Woodgate, Robert Woodruff, Neville Woolf

Proceedings Volume 6265, 62651R (2006) https://doi.org/10.1117/12.672498

KEYWORDS: Coronagraphy, Planets, Mirrors, Wavefronts, Space telescopes, Telescopes, Wavefront sensors, Stars, Apodization, Phase modulation

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Proceedings Article | 6 July 2006 Paper

Extrasolar planetary imaging coronagraph (EPIC)

Mark Clampin, Gary Melnick, Richard Lyon, Scott Kenyon, Dimitar Sasselov, Volker Tolls, Holland Ford, David Golimowski, Larry Petro, George Hartig, William Sparks, Garth Illingworth, Doug Lin, Sara Seager, Alycia Weinberger, Martin Harwit, Mark Marley, Jean Schneider, Michael Shao, Marty Levine, Jian Ge, Robert Woodruff

Proceedings Volume 6265, 62651B (2006) https://doi.org/10.1117/12.672849

KEYWORDS: Planets, Wavefronts, Nulling interferometry, Coronagraphy, Stars, Space telescopes, Point spread functions, Telescopes, Atmospheric physics, Atmospheric sensing

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Proceedings Article | 19 June 2006 Paper

Coronagraphic Exploration Camera (CorECam)

Mark Clampin, Richard Lyon, Larry Petro, Sara Seager, Mark Marley, Gary Melnick, Alycia Weinberger, Robert Woodruff, Scott Horner, Holland Ford, Garth Illingworth, Jim Kasting, Doug Lin, Marc Kuchner, Mike Shao, William Sparks, Bernard Rauscher, Volker Tolls, Ruth Carter

Proceedings Volume 6265, 62650O (2006) https://doi.org/10.1117/12.672816

KEYWORDS: Planets, Optical filters, Near infrared, Sensors, Cameras, Charge-coupled devices, Staring arrays, Photon counting, Imaging systems, Planetary systems

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Proceedings Article | 15 June 2006 Paper

Study of coronagraphic techniques

Volker Tolls, Michael Aziz, Robert Gonsalves, Sylvain Korzennik, Antoine Labeyrie, Richard Lyon, Gary Melnick, Ruth Schlitz, Steve Somerstein, Gopal Vasudevan, Robert Woodruff

Proceedings Volume 6265, 62653K (2006) https://doi.org/10.1117/12.672647

KEYWORDS: Coronagraphy, Manufacturing, Speckle, Sensors, Scanners, Absorbance, Microelectromechanical systems, Beam propagation method, Observatories, Ion beams

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Proceedings Article | 15 June 2006 Paper

PIAA coronagraph design: system optimization and first optics testing

Eugene Pluzhnik, Olivier Guyon, Mark Warren, Stephen Ridgway, Robert Woodruff

Proceedings Volume 6265, 62653S (2006) https://doi.org/10.1117/12.670991

KEYWORDS: Mirrors, Diffraction, Coronagraphy, Optics manufacturing, Apodization, Point spread functions, Planets, Space telescopes, Polishing, Telescopes

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Proceedings Article | 13 June 2006 Paper

A nulling coronagraph for TPF-C

Michael Shao, Bruce Levine, James Wallace, Glenn Orton, Edouard Schmidtlin, Benjamin Lane, Sara Seager, Volker Tolls, Richard Lyon, Rocco Samuele, Domenick Tenerelli, Robert Woodruff, Jian Ge

Proceedings Volume 6265, 626517 (2006) https://doi.org/10.1117/12.671934

KEYWORDS: Coronagraphy, Planets, Interferometers, Stars, Nulling interferometry, Optical fibers, Calibration, Wavefronts, Telescopes, Mirrors

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Proceedings Article | 13 June 2006 Paper

Imaging extrasolar terrestrial planets from space with a PIAA coronagraph

Olivier Guyon, Eugene Pluzhnik, Stephen Ridgway, Robert Woodruff

Proceedings Volume 6265, 62651F (2006) https://doi.org/10.1117/12.670638

KEYWORDS: Coronagraphy, Telescopes, Planets, Apodization, Space telescopes, Stars, Point spread functions, Mirrors, Spiral phase plates, Adaptive optics

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Proceedings Article | 5 October 2005 Paper

Study of high-performance coronagraphic techniques

Volker Tolls, Michael Aziz, Robert Gonsalves, Sylvain Korzennik, Antoine Labeyrie, Richard Lyon, Gary Melnick, Steve Somerstein, Gopal Vasudevan, Robert Woodruff

Proceedings Volume 5905, 59051M (2005) https://doi.org/10.1117/12.639422

KEYWORDS: Speckle, Coronagraphy, Photomasks, Manufacturing, Planets, Mirrors, Spherical lenses, Ion beams, Wavefronts, Device simulation

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Proceedings Article | 31 August 2005 Paper

Design trades for next-generation UV/optical/NIR space telescopes

Robert Woodruff

Proceedings Volume 5899, 58990C (2005) https://doi.org/10.1117/12.624230

KEYWORDS: Space telescopes, Mirrors, Imaging spectroscopy, Telescopes, Spectroscopy, Space mirrors, Wavefronts, Ultraviolet radiation, Cameras, Imaging systems

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Proceedings Article | 18 October 2004 Paper

System wavefront correction using a complex aspheric mirror

Robert Kestner, Chris Witebsky, Richard Lyon, Robert Woodruff

Proceedings Volume 5533, (2004) https://doi.org/10.1117/12.567162

KEYWORDS: Wavefronts, Mirrors, Aspheric optics, Spatial frequencies, Planets, Stars, Space telescopes, Off axis mirrors, Telescopes, Aspheric lenses

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Proceedings Article | 12 October 2004 Paper

Pupil Remapping Coronagraph (PRC): a high-performance coronagraph for a small-size visible Terrestrial Planet Finder

Olivier Guyon, Stephen Ridgway, Claude Aime, Anthony Boccaletti, Jean-Luc Beuzit, Raphael Galicher, Pierre Kern, Takayuki Kotani, Anne-Marie Lagrange, Richard Lyon, Fabien Malbet, Koji Murakawa, Masashi Otsubo, Daniel Rouan, Remi Soummer, Hiroshi Suto, Motohide Tamura, Robert Woodruff

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.552429

KEYWORDS: Telescopes, Space telescopes, Apodization, Coronagraphy, Point spread functions, Planets, Mirrors, Imaging systems, Stars, Polishing

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Proceedings Article | 12 October 2004 Paper

A vector diffraction model of wave propagation in a coronagraphic terrestrial planet finder

Shahram Shiri, Richard Lyon, Robert Woodruff, Roman Antosik

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.552163

KEYWORDS: Coronagraphy, Diffraction, Planets, Wave propagation, Radio propagation, Chemical elements, 3D modeling, Finite element methods, Waveguides, Light

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Proceedings Article | 12 October 2004 Paper

Technical implementation of the DESTINY mission concept

Robert Woodruff, Jon Morse, Tod Lauer

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.562389

KEYWORDS: Space telescopes, Sensors, Mirrors, Space operations, Staring arrays, Telescopes, Spectroscopy, Near infrared, Tantalum, Mercury cadmium telluride

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Proceedings Article | 12 October 2004 Paper

The DESTINY concept for the Joint Dark Energy Mission (JDEM)

Jon Morse, Tod Lauer, Robert Woodruff

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.550707

KEYWORDS: Space telescopes, Near infrared, Distance measurement, Large Synoptic Survey Telescope, Cameras, Physics, Spectroscopy, Hubble Space Telescope, Atmospheric modeling, Photometry

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Proceedings Article | 12 October 2004 Paper

Extrasolar Planetary Imaging Coronagraph (EPIC)

Mark Clampin, Gary Melnick, Richard Lyon, Holland Ford, J. Roger Angel, Daniel Gezari, David Golimowski, George Hartig, Martin Harwit, Matt Holman, Garth Illingworth, Scott Kenyon, Douglas Lin, Mark Marley, Scot Olivier, Larry Petro, Dimitar Sasselov, Jean Schneider, Sara Seager, Michael Shao, William Sparks, Volker Tolls, Alycia Weinberger, Hsiao Smith, Ruth Carter, Robert Woodruff, Brent Hyatt, Stephen Kendrick, David Purmot

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.552314

KEYWORDS: Planets, Coronagraphy, Telescopes, Mirrors, Wavefronts, Stars, Space telescopes, Nulling interferometry, Solar system, Imaging systems

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Proceedings Article | 12 October 2004 Paper

Wide Field Camera 3 instrument optical design for the Hubble Space Telescope

Jennifer Turner-Valle, Joseph Sullivan, John Mentzell, Robert Woodruff

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.550893

KEYWORDS: Cameras, Hubble Space Telescope, Optical design, Infrared telescopes, Sensors, Infrared radiation, Space telescopes, Optical instrument design, Ultraviolet radiation, Silicon

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Proceedings Article | 12 October 2004 Paper

On-orbit performance of the MIPS instrument

George Rieke, Erick Young, James Cadien, Charles Engelbracht, Karl Gordon, Douglas Kelly, Frank Low, Karl Misselt, Jane Morrison, James Muzerolle, G. Rivlis, John Stansberry, Jeffrey Beeman, Eugene Haller, David Frayer, William Latter, Alberto Noriega-Crespo, Deborah Padgett, Dean Hines, J. Douglas Bean, William Burmester, Gerald Heim, Thomas Glenn, R. Ordonez, John Schwenker, S. Siewert, Donald Strecker, S. Tennant, John Troeltzsch, Bryce Unruh, R. Warden, Peter Ade, Almudena Alonso-Herrero, Myra Blaylock, Herve Dole, Eiichi Egami, Joannah Hinz, Emeric LeFloch, Casey Papovich, Pablo Perez-Gonzalez, Marcia Rieke, Paul Smith, Kate Su, Lee Bennett, David Henderson, Nanyao Lu, Frank Masci, Misha Pesenson, Luisa Rebull, Jeonghee Rho, Jocelyn Keene, Susan Stolovy, Stefanie Wachter, William Wheaton, Paul Richards, Harry Garner, M. Hegge, Monte Henderson, Kim MacFeely, David Michika, Chris Miller, Mark Neitenbach, Jeremiah Winghart, R. Woodruff, E. Arens, Charles Beichman, Stephen Gaalema, Thomas Gautier, Charles Lada, Jeremy Mould, Gerry Neugebauer, Karl Stapelfeldt

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.551965

KEYWORDS: Sensors, Mirrors, Electronics, Photometry, Detector arrays, Space telescopes, Far infrared, Calibration, Aluminum, Infrared radiation

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Proceedings Article | 3 March 2003 Paper

Optical systems engineering for a terrestrial planet finder coronagraph

Charley Noecker, Robert Woodruff, Chris Burrows

Proceedings Volume 4860, (2003) https://doi.org/10.1117/12.457916

KEYWORDS: Planets, Wavefronts, Coronagraphy, Stars, Diffraction, Mirrors, Spatial frequencies, Telescopes, Actuators, Point spread functions

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Proceedings Article | 3 March 2003 Paper

Large sparse-aperture densified-pupil hypertelescope concept for ground-based detection of extrasolar planets

Daniel Gezari, Richard Lyon, Robert Woodruff, Antoine Labeyrie

Proceedings Volume 4860, (2003) https://doi.org/10.1117/12.457673

KEYWORDS: Point spread functions, Wavefronts, Telescopes, Mirrors, Atmospheric corrections, Space telescopes, Wavefront sensors, Actuators, Atmospheric turbulence, Exoplanets

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Proceedings Article | 3 March 2003 Paper

ExPO: a Discovery-class apodized square aperture (ASA) extrasolar planet observatory

Daniel Gezari, Peter Nisenson, Costas Papaliolios, Gary Melnick, Richard Lyon, Martin Harwit, Stephen Ridgway, Robert Woodruff

Proceedings Volume 4860, (2003) https://doi.org/10.1117/12.457672

KEYWORDS: Planets, Mirrors, Space telescopes, Stars, Telescopes, Wavefronts, Exoplanets, Observatories, Off axis mirrors, Point spread functions

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Proceedings Article | 3 March 2003 Paper

Jovian Planet Finder optical system

John Krist, Mark Clampin, Larry Petro, Robert Woodruff, Holland Ford, Garth Illingworth, Christ Ftaclas

Proceedings Volume 4860, (2003) https://doi.org/10.1117/12.457838

KEYWORDS: Mirrors, Planets, Stars, Space telescopes, Wavefronts, Light scattering, Telescopes, Coronagraphy, Polishing, Point spread functions

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Proceedings Article | 24 February 2003 Paper

Overview of the Advanced Camera for Surveys on-orbit performance

Holland Ford, Mark Clampin, George Hartig, Garth Illingworth, Marco Sirianni, Andre Martel, Gerhardt Meurer, William McCann, Pamela Sullivan, Frank Bartko, Narcisco Benitez, John Blakeslee, Rychard Bouwens, Tom Broadhurst, Robert Brown, Christopher Burrows, Douglas Campbell, Edward Cheng, Paul Feldman, Marijn Franx, David Golimowski, Caryl Gronwall, Randy Kimble, John Krist, Michael Lesser, Dan Magee, George Miley, Marc Postman, Marc Rafal, Piero Rosati, William Sparks, Hien Tran, Zlatan Tsvetanov, Paul Volmer, Richard White, Robert Woodruff

Proceedings Volume 4854, (2003) https://doi.org/10.1117/12.460040

KEYWORDS: Stars, Coronagraphy, Cameras, Calibration, Charge-coupled devices, Point spread functions, Galactic astronomy, Space telescopes, Optical filters, Spectral resolution

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Proceedings Article | 24 February 2003 Paper

Design concepts for future large-aperture wide-field-of-view UVIS optical systems

Robert Woodruff

Proceedings Volume 4854, (2003) https://doi.org/10.1117/12.459780

KEYWORDS: Coronagraphy, Wavefronts, Mirrors, Optics manufacturing, Active optics, Staring arrays, Imaging systems, Telescopes, Imaging spectroscopy, Space telescopes

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Proceedings Article | 4 September 1998 Paper

Performance, standby power, and manufacturability trade-off in transistor design consideration for 0.25-um technology

Navakanta Bhat, Harry Chuang, Paul Tsui, R. Woodruff, John Grant, R. Kruth, Asanga Perera, Stephen Poon, Sean Collins, D. Dyer, Veena Misra, I. Yang, Suresh Venkatesan, Percy Gilbert

Proceedings Volume 3506, (1998) https://doi.org/10.1117/12.323963

KEYWORDS: Transistors, Manufacturing, Capacitance, Logic, Mobile communications, Design for manufacturability, Optical lithography, CMOS technology, Oxides, Fermium

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