Dr. Webster Cash Profile

Dr. Webster Cash

Professor/Astrophysical & Planetary Sciences at Univ of Colorado at Boulder

SPIE Involvement:

Author

Publications (97)

Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

An x-ray interferometry concept for the ESA Voyage 2050 programme

Phil Uttley, Roland den Hartog, Cosimo Bambi, Didier Barret, Stefano Bianchi, Michal Bursa, Massimo Cappi, Piergiorgio Casella, Webster Cash, Elisa Costantini, Thomas Dauser, Maria Diaz Trigo, Keith Gendreau, Victoria Grinberg, Jan-Willem den Herder, Adam Ingram, Erin Kara, Sera Markoff, Beatriz Mingo, Francesca Panessa, Katja Poppenhäger, Agata Rózanska, Jiri Svoboda, Ralph Wijers, Richard Willingale, Jörn Wilms, Michael Wise

Proceedings Volume 11444, 114441E (2020) https://doi.org/10.1117/12.2562523

KEYWORDS: X-rays, Interferometry, Interferometers, X-ray imaging, Binary data, X-ray telescopes, Spatial resolution, Space operations, Telescopes, Observatories

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Proceedings Article | 29 July 2016 Paper

Paper

Ground-based testing and demonstrations of starshades

Anthony Harness, Steve Warwick, Ann Shipley, Webster Cash

Proceedings Volume 9904, 99043I (2016) https://doi.org/10.1117/12.2231916

KEYWORDS: Astronomy, Telescopes, Solar telescopes, Observatories, Electron multiplying charge coupled devices, Stars, Space telescopes, Mirrors, Control systems, Calibration

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Proceedings Article | 16 September 2015 Paper

Paper

The Exo-S probe class starshade mission

Sara Seager, Margaret Turnbull, William Sparks, Mark Thomson, Stuart Shaklan, Aki Roberge, Marc Kuchner, N. Jeremy Kasdin, Shawn Domagal-Goldman, Webster Cash, Keith Warfield, Doug Lisman, Dan Scharf, David Webb, Rachel Trabert, Stefan Martin, Eric Cady, Cate Heneghan

Proceedings Volume 9605, 96050W (2015) https://doi.org/10.1117/12.2190378

KEYWORDS: Telescopes, Space telescopes, Planets, Stars, Exoplanets, Space operations, Imaging systems, Coronagraphy, Tolerancing, Cameras

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Exo-S is a direct imaging space-based mission to discover and characterize exoplanets. With its modest size, Exo-S bridges the gap between census missions like Kepler and a future space-based flagship direct imaging exoplanet mission. With the ability to reach down to Earth-size planets in the habitable zones of nearly two dozen nearby stars, Exo-S is a powerful first step in the search for and identification of Earth-like planets. Compelling science can be returned at the same time as the technological and scientific framework is developed for a larger flagship mission. The Exo-S Science and Technology Definition Team studied two viable starshade-telescope missions for exoplanet direct imaging, targeted to the $1B cost guideline. The first Exo-S mission concept is a starshade and telescope system dedicated to each other for the sole purpose of direct imaging for exoplanets (The "Starshade Dedicated Mission"). The starshade and commercial, 1.1-m diameter telescope co-launch, sharing the same low-cost launch vehicle, conserving cost. The Dedicated mission orbits in a heliocentric, Earth leading, Earth-drift away orbit. The telescope has a conventional instrument package that includes the planet camera, a basic spectrometer, and a guide camera. The second Exo-S mission concept is a starshade that launches separately to rendezvous with an existing on-orbit space telescope (the "Starshade Rendezvous Mission"). The existing telescope adopted for the study is the WFIRST-AFTA (Wide-Field Infrared Survey Telescope Astrophysics Focused Telescope Asset). The WFIRST-AFTA 2.4-m telescope is assumed to have previously launched to a Halo orbit about the Earth-Sun L2 point, away from the gravity gradient of Earth orbit which is unsuitable for formation flying of the starshade and telescope. The impact on WFIRST-AFTA for starshade readiness is minimized; the existing coronagraph instrument performs as the starshade science instrument, while formation guidance is handled by the existing coronagraph focal planes with minimal modification and an added transceiver.

Proceedings Article | 12 May 2015 Paper

Paper

X-ray monitoring for astrophysical applications on Cubesat

L. Pina, R. Hudec, A. Inneman, D. Cerna, J. Jakubek, L. Sieger, V. Dániel, W. Cash, L. Mikulickova, R. Pavlica, E. Belas, J. Polak

Proceedings Volume 9510, 951005 (2015) https://doi.org/10.1117/12.2185091

KEYWORDS: Sensors, X-rays, X-ray optics, Composites, Eye, Solar cells, X-ray detectors, Space operations, Reflectors, Satellites

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Proceedings Article | 5 September 2014 Paper

Paper

X-ray monitoring for astrophysical applications

L. Pina, D. Burrows, W. Cash, D. Cerna, P. Gorenstein, R. Hudec, A. Inneman, J. Jakubek, V. Marsikova, L. Sieger, V. Tichy

Proceedings Volume 9207, 92070T (2014) https://doi.org/10.1117/12.2064726

KEYWORDS: Sensors, X-rays, X-ray optics, Eye, X-ray detectors, Space telescopes, Glasses, X-ray telescopes, X-ray imaging, Geometrical optics

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Proceedings Article | 23 July 2014 Paper

Paper

Developments in the EM-CCD camera for OGRE

James Tutt, Randall McEntaffer, Casey DeRoo, Ted Schultz, Drew Miles, William Zhang, Neil Murray, Andrew Holland, Webster Cash, Thomas Rogers, Steve O'Dell, Jessica Gaskin, Jeff Kolodziejczak, Anthony Evagora, Karen Holland, David Colebrook

Proceedings Volume 9154, 91540E (2014) https://doi.org/10.1117/12.2054872

KEYWORDS: Sensors, Cameras, X-rays, Aluminum, Photons, Silicon, Quantum efficiency, Rockets, Mirrors, CCD cameras

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Proceedings Article | 27 September 2013 Paper

Paper

Design of novel x-ray optical system for rocket experiment

L. Pina, R. Hudec, V. Tichy, A. Inneman, D. Cerna, L. Sveda, J. Marsik, V. Marsikova, W. Cash, A. Shipley, B. Zeiger, T. Rogers

Proceedings Volume 8848, 884805 (2013) https://doi.org/10.1117/12.2023984

KEYWORDS: X-rays, X-ray optics, Mirrors, Silicon, Rockets, Optics manufacturing, Sensors, Glasses, X-ray telescopes, Reflectivity

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Proceedings Article | 26 September 2013 Paper

Paper

New Worlds Airship

Anthony Harness, Webster Cash, Ann Shipley, Tiffany Glassman, Steve Warwick

Proceedings Volume 8864, 886407 (2013) https://doi.org/10.1117/12.2024450

KEYWORDS: Stars, Telescopes, Sensors, Visualization, Rockets, Global Positioning System, Space telescopes, Planetary systems, Neodymium, Astronomy

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Proceedings Article | 26 September 2013 Paper

Paper

Survey of experimental results in high-contrast imaging for future exoplanet missions

P. Lawson, R. Belikov, W. Cash, M. Clampin, T. Glassman, O. Guyon, N. J. Kasdin, B. Kern, R. Lyon, D. Mawet, D. Moody, R. Samuele, E. Serabyn, D. Sirbu, J. Trauger

Proceedings Volume 8864, 88641F (2013) https://doi.org/10.1117/12.2021302

KEYWORDS: Coronagraphy, Exoplanets, Stars, Planets, Polarizers, Deformable mirrors, Manufacturing, Optics manufacturing, Image segmentation, Imaging systems

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Proceedings Article | 26 September 2013 Paper

Paper

The OGRESS sounding rocket payload

T. Rogers, R. McEntaffer, T. Schultz, B. Zeiger, P. Oakley, W. Cash

Proceedings Volume 8859, 885911 (2013) https://doi.org/10.1117/12.2023762

KEYWORDS: Sensors, Signal to noise ratio, Rockets, X-rays, Electronics, Spectroscopy, Calibration, Spectral resolution, Ions, Plasma

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Proceedings Article | 26 September 2013 Paper

Paper

Pushing the boundaries of x-ray grating spectroscopy in a suborbital rocket

Casey DeRoo, Randall McEntaffer, Ted Schultz, William Zhang, Neil Murray, Stephen O'Dell, Webster Cash

Proceedings Volume 8861, 88611B (2013) https://doi.org/10.1117/12.2022244

KEYWORDS: X-rays, Spectroscopy, Mirrors, Silicon, Glasses, Rockets, Spectral resolution, Diffraction gratings, Observatories, X-ray technology

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Proceedings Article | 3 May 2013 Paper

Paper

Hybrid x-ray optical system for space astrophysics

L. Pina, R. Hudec, V. Tichy, A. Inneman, D. Cerna, J. Marsik, V. Marsikova, Webster Cash, A. Shipley, B. Zeiger, T. Rogers

Proceedings Volume 8777, 87770X (2013) https://doi.org/10.1117/12.2017205

KEYWORDS: X-rays, Mirrors, Optics manufacturing, X-ray optics, Silicon, Glasses, Ray tracing, Reflectivity, Semiconducting wafers, X-ray telescopes

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Proceedings Article | 15 October 2012 Paper

Paper

Novel design of a large x-ray optical system for astrophysical application

L. Pina, R. Hudec, V. Tichy, A. Inneman, D. Cerna, J. Marsik, V. Marsikova, W. Cash, A. Shipley, B. Zeiger, T. Rogers, R. Melich

Proceedings Volume 8502, 85020D (2012) https://doi.org/10.1117/12.929591

KEYWORDS: X-rays, X-ray optics, Mirrors, Semiconducting wafers, Wafer-level optics, Optics manufacturing, Silicon, Optical fabrication, X-ray telescopes, Space telescopes

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Proceedings Article | 17 September 2012 Paper

Paper

The NASA X-ray Mission concepts study

R. Petre, J. Bregman, M. Bautz, D. Burrows, W. Cash, C. Jones-Forman, S. Murray, P. Plucinsky, B. Ramsey, R. Remillard, C. Wilson-Hodge, A. Ptak, J. Bookbinder, M. Garcia, R. Smith, G. Daelemans

Proceedings Volume 8443, 84431I (2012) https://doi.org/10.1117/12.926212

KEYWORDS: Mirrors, X-rays, Spectroscopy, Space operations, Spectral resolution, Electromagnetic coupling, Sensors, X-ray astronomy, Observatories, Spatial resolution

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Proceedings Article | 17 September 2012 Paper

Paper

Concepts for high-performance soft X-ray grating spectroscopy in a moderate-scale mission

Marshall Bautz, Webster Cash, John Davis, Ralf Heilmann, David Huenemoerder, Mark Schattenburg, Randall McEntaffer, Randall Smith, Scott Wolk, William Zhang, Steven Jordan, Charles Lillie

Proceedings Volume 8443, 844315 (2012) https://doi.org/10.1117/12.926810

KEYWORDS: X-rays, Spectrometers, Mirrors, Spectral resolution, Spectroscopy, Computed tomography, Astrophysics, X-ray astronomy, Observatories, Imaging spectroscopy

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Proceedings Article | 12 October 2011 Paper

Paper

Development of off-plane gratings for WHIMex and IXO

Randall McEntaffer, Webster Cash, Chuck Lillie, Suzanne Casement, Will Zhang, Andrew Holland, Neil Murray, Stephen O'Dell, Mark Schattenburg, Ralf Heilmann, Hiroshi Tsunemi

Proceedings Volume 8147, 81471K (2011) https://doi.org/10.1117/12.895037

KEYWORDS: X-rays, Optical design, Telescopes, CCD cameras, Charge-coupled devices, Observatories, Spectrometers, Spectral resolution, X-ray astronomy, Space telescopes

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Proceedings Article | 12 October 2011 Paper

Paper

X-ray optics for WHIMex: the Warm Hot Intergalactic Medium Explorer

W. Cash, R. McEntaffer, W. Zhang, S. Casement, C. Lillie, M. Schattenburg, M. Bautz, A. Holland, H. Tsunemi, S. O'Dell

Proceedings Volume 8147, 81471J (2011) https://doi.org/10.1117/12.895014

KEYWORDS: X-rays, X-ray optics, X-ray astronomy, Spectrographs, Absorption, Space operations, Sensors, Observatories, Optical design, Spectroscopy

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Proceedings Article | 5 October 2011 Paper

Paper

The Warm-Hot Intergalactic Medium Explorer (WHIMex) mission

Charles Lillie, Webster Cash, Randall McEntaffer, William Zhang, Stephen O'Dell, Mark Bautz, Martin Elvis

Proceedings Volume 8145, 81450C (2011) https://doi.org/10.1117/12.895386

KEYWORDS: X-rays, Space operations, Sensors, Observatories, Charge-coupled devices, Data archive systems, Staring arrays, Electronics, Stars, Mirrors

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Proceedings Article | 24 May 2011 Paper

Paper

Full-aperture x-ray tests of Kirkpatrick-Baez modules: preliminary results

L. Pina, V. Marsikova, R. Hudec, A. Inneman, J. Marsik, W. Cash, A. Shipley, B. Zeiger

Proceedings Volume 8076, 807609 (2011) https://doi.org/10.1117/12.890517

KEYWORDS: X-rays, Silicon, X-ray optics, Glasses, X-ray astronomy, Mirrors, X-ray technology, Wafer-level optics, Astronomical imaging, Optics manufacturing

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Proceedings Article | 10 May 2011 Paper

Paper

Compact optics for high resolution spectroscopy of celestial x-ray sources

W. Cash, C. Lillie, R. McEntaffer, W. Zhang

Proceedings Volume 8076, 807603 (2011) https://doi.org/10.1117/12.887092

KEYWORDS: X-ray optics, X-rays, Spectroscopy, Spectrographs, Diffraction gratings, Sensors, Space telescopes, Telescopes, X-ray astronomy, Optical design

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Proceedings Article | 4 May 2011 Paper

Paper

The CODEX sounding rocket payload

B. Zeiger, A. Shipley, W. Cash, T. Rogers, T. Schultz, R. McEntaffer, M. Kaiser

Proceedings Volume 8076, 80760S (2011) https://doi.org/10.1117/12.887058

KEYWORDS: Sensors, X-rays, Signal to noise ratio, Rockets, Diffraction gratings, Spectroscopy, Photons, Calibration, X-ray astronomy, Astronomy

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Proceedings Article | 10 August 2010 Paper

Paper

Direct imaging and spectroscopy of habitable planets using JWST and a starshade

Rémi Soummer, Jeff Valenti, Robert Brown, Sara Seager, Jason Tumlinson, Webster Cash, Ian Jordan, Marc Postman, Matt Mountain, Tiffany Glassman, Laurent Pueyo, Aki Roberge

Proceedings Volume 7731, 77312I (2010) https://doi.org/10.1117/12.858347

KEYWORDS: Planets, James Webb Space Telescope, Stars, Oxygen, Imaging spectroscopy, Stray light, Spectroscopy, Earth's atmosphere, Space telescopes, Sensors

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Proceedings Article | 10 August 2010 Paper

Paper

New Worlds Probe

Amy Lo, Tiffany Glassman, Dean Dailey, Ken Sterk, James Green, Webster Cash, Remi Soummer

Proceedings Volume 7731, 77312E (2010) https://doi.org/10.1117/12.856270

KEYWORDS: James Webb Space Telescope, Stars, Space telescopes, Telescopes, Planets, Cameras, Target acquisition, Neodymium, Optical instrument design, Exoplanets

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Proceedings Article | 6 August 2010 Paper

Paper

Alternative starshade missions

W. Cash, T. Glassman, A. Lo, R. Soummer

Proceedings Volume 7731, 77312J (2010) https://doi.org/10.1117/12.857723

KEYWORDS: Telescopes, James Webb Space Telescope, Space telescopes, Planets, Solar system, Device simulation, Diffraction, Spectroscopy, Jupiter, Image resolution

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Proceedings Article | 30 July 2010 Paper

Paper

X-ray resolution tests of an off-plane reflection grating for IXO

Benjamin Zeiger, Ann Shipley, Webster Cash, Randall McEntaffer

Proceedings Volume 7732, 773245 (2010) https://doi.org/10.1117/12.857503

KEYWORDS: Diffraction gratings, X-rays, Sensors, Spectroscopy, Telescopes, Photons, Optics manufacturing, Mirrors, Image resolution, Space telescopes

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Proceedings Article | 29 July 2010 Paper

Paper

Developments of the off-plane x-ray grating spectrometer for IXO

R. McEntaffer, N. Murray, A. Holland, J. Tutt, S. Barber, R. Harriss, T. Schultz, S. Casement, C. Lillie, D. Dailey, T. Johnson, R. Danner, W. Cash, B. Zeiger, A. Shipley, M. Page, D. Walton, P. Pool, J. Endicott, D. Willingale

Proceedings Volume 7732, 77321K (2010) https://doi.org/10.1117/12.857460

KEYWORDS: Telescopes, Charge-coupled devices, Spectral resolution, X-rays, Space telescopes, Spectroscopy, Optical design, Diffraction gratings, Cameras, Observatories

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Proceedings Article | 29 July 2010 Paper

Paper

Results from the Extended X-ray Off-plane Spectrometer (EXOS) sounding rocket payload

Phil Oakley, Ben Zeiger, Michael Kaiser, Ann Shipley, Webster Cash, Randall McEntaffer, Ted Schultz

Proceedings Volume 7732, 77321R (2010) https://doi.org/10.1117/12.857540

KEYWORDS: Sensors, Rockets, Calibration, Collimators, X-rays, Spectroscopy, Solar processes, Diagnostics, Photons, X-ray astronomy

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Proceedings Article | 29 July 2010 Paper

Paper

A tower concept for the off-plane x-ray grating spectrometer for the International X-ray Observatory

Suzanne Casement, Randall McEntaffer, Webster Cash, Tim Johnson, Charles Lillie, Dean Dailey

Proceedings Volume 7732, 77323W (2010) https://doi.org/10.1117/12.856022

KEYWORDS: X-rays, Optical design, Cameras, Spectroscopy, Observatories, Spectral resolution, Point spread functions, Neodymium, Sensors, Rockets

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Proceedings Article | 29 July 2010 Paper

Paper

Off-plane x-ray grating spectrometer camera for IXO

Neil Murray, Andrew Holland, Richard Harriss, James Tutt, Simeon Barber, Peter Pool, James Endicott, David Burt, Dave Walton, Mat Page, Randall McEntaffer, Ted Schultz, Webster Cash, Chuck Lillie, Suzanne Casement

Proceedings Volume 7742, 77420X (2010) https://doi.org/10.1117/12.864051

KEYWORDS: Charge-coupled devices, Cameras, X-rays, CCD cameras, Spectroscopy, Contamination, Stray light, Quantum efficiency, Sensors, Space telescopes

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Proceedings Article | 31 August 2009 Paper

Paper

The EXOS sounding rocket payload

Phil Oakley, Webster Cash, Randy McEntaffer, Ann Shipley, Ted Schultz

Proceedings Volume 7437, 74370I (2009) https://doi.org/10.1117/12.827494

KEYWORDS: Sensors, Rockets, Collimators, Solar processes, X-rays, X-ray astronomy, Silicon, Ionization, Nickel, Switches

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Proceedings Article | 31 August 2009 Paper

Paper

Off-plane grating spectrometer for the International X-ray Observatory

Randall McEntaffer, Neil Murray, Andrew Holland, Charles Lillie, Suzanne Casement, Dean Dailey, Tim Johnson, Webster Cash, Phillip Oakley, Ted Schultz, David Burrows

Proceedings Volume 7437, 74370H (2009) https://doi.org/10.1117/12.827980

KEYWORDS: Charge-coupled devices, X-rays, Telescopes, Spectroscopy, Space telescopes, Spectral resolution, CCD cameras, Electronics, Diffraction gratings, Space operations

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Proceedings Article | 26 August 2009 Paper

Paper

The New Worlds Observer: the astrophysics strategic mission concept study

Webster Cash, Stephen Kendrick, Charley Noecker, John Bally, Julia DeMarines, James Green, Phillip Oakley, Ann Shipley, Scott Benson, Steve Oleson, David Content, Dave Folta, Sharon Garrison, Keith Gendreau, Kate Hartman, Joseph Howard, Tupper Hyde, Darryl Lakins, Jesse Leitner, Douglas Leviton, Rich Luquette, Bill Oegerley, Karen Richon, Aki Roberge, Steve Tompkins, June Tveekrem, Bruce Woodgate, Margaret Turnbull, Dean Dailey, Kent Decker, Reza Dehmohseni, Brian Gaugh, Tiffany Glassman, Mickey Haney, Reem Hejal, Charles Lillie, Amy Lo, David O'Conner, Gina Oleas, Ronald Polidan, Rocco Samuele, Stephen Shields, James Shirvanian, David SooHoo, Giovanna Tinetti, Bryan Dorland, Rachel Dudik, Ralph Gaume, Brian Mason

Proceedings Volume 7436, 743606 (2009) https://doi.org/10.1117/12.827486

KEYWORDS: Planets, Telescopes, Space telescopes, Stars, Space operations, Exoplanets, Astrophysics, Edge roughness, Sensors, Planetary systems

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Proceedings Article | 20 August 2009 Paper

Paper

A starshade for JWST: science goals and optimization

Rémi Soummer, Webster Cash, Robert Brown, Ian Jordan, Aki Roberge, Tiffany Glassman, Amy Lo, Sara Seager, Laurent Pueyo

Proceedings Volume 7440, 74400A (2009) https://doi.org/10.1117/12.826702

KEYWORDS: Planets, James Webb Space Telescope, Stars, Imaging spectroscopy, Spectroscopy, Telescopes, Exoplanets, Sensors, Space telescopes, Image filtering

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Proceedings Article | 20 August 2009 Paper

Paper

Starshade scaling relations

Tiffany Glassman, Amy Lo, Jonathan Arenberg, Webster Cash, Charley Noecker

Proceedings Volume 7440, 744013 (2009) https://doi.org/10.1117/12.825033

KEYWORDS: Planets, Telescopes, Stars, Space telescopes, Coronagraphy, Exoplanets, Apodization, Aerospace engineering, Optical instrument design, Decision support systems

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Proceedings Article | 30 April 2009 Paper

Paper

Off-plane x-ray grating spectrometer for the International X-ray Observatory

Randall McEntaffer, Neil Murray, Andrew Holland, Chuck Lillie, Suzanne Casement, Dean Dailey, Tim Johnson, Webster Cash, Phil Oakley

Proceedings Volume 7360, 73600H (2009) https://doi.org/10.1117/12.821050

KEYWORDS: Charge-coupled devices, X-rays, CCD cameras, Electronics, Telescopes, Spectroscopy, Diffraction gratings, Space telescopes, Spectral resolution, Space operations

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Proceedings Article | 15 July 2008 Paper

Paper

Off-plane reflection gratings for Constellation-X

Randall McEntaffer, Webster Cash, Ann Shipley

Proceedings Volume 7011, 701107 (2008) https://doi.org/10.1117/12.789543

KEYWORDS: Telescopes, Tolerancing, Charge-coupled devices, Diffraction gratings, Space telescopes, X-rays, Optical design, Spectroscopy, Staring arrays, Diffraction

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Proceedings Article | 15 July 2008 Paper

Paper

The milli-arc-second structure imager (MASSIM): a new concept for a high angular resolution x-ray telescope

G. Skinner, Z. Arzoumanian, W. Cash, N. Gehrels, K. Gendreau, P. Gorenstein, J. Krizmanic, M. Miller, J. Phillips, R. Reasenberg, C. Reynolds, R. Sambruna, R. Streitmatter, D. Windt

Proceedings Volume 7011, 70110T (2008) https://doi.org/10.1117/12.789568

KEYWORDS: Spatial resolution, Space operations, X-rays, Sensors, X-ray optics, Stars, X-ray astronomy, Imaging systems, Fresnel lenses, X-ray diffraction

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Proceedings Article | 14 July 2008 Paper

Paper

The future of high angular resolution x-ray astronomy

Paul Gorenstein, Webster Cash, Neil Gehrels, Keith Gendreau, John Krizmanic, M. Coleman Miller, Christopher Reynolds, Rita Sambruna, Gerald Skinner, Robert Streitmatter, David Windt

Proceedings Volume 7011, 70110U (2008) https://doi.org/10.1117/12.789978

KEYWORDS: Space telescopes, Telescopes, X-rays, Spatial resolution, Chromatic aberrations, X-ray telescopes, Zone plates, Diffraction, Sensors, Space operations

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Proceedings Article | 12 July 2008 Paper

Paper

New Worlds Observer telescope and instrument optical design concepts

Joseph Howard, Charlie Noecker, Steve Kendrick, Steve Kilston, Bruce Woodgate, Webster Cash

Proceedings Volume 7010, 70103X (2008) https://doi.org/10.1117/12.790216

KEYWORDS: Telescopes, Optical design, Space telescopes, Infrared telescopes, Ultraviolet radiation, Aerospace engineering, Infrared radiation, Imaging systems, Spectrographs, Telescope design

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Proceedings Article | 12 July 2008 Paper

Paper

New Worlds Observer: Minotaur to Ares V

Amy Lo, Tiffany Glassman, Dean Dailey, Charles Lillie, Webster Cash, Philip Oakley

Proceedings Volume 7010, 70101W (2008) https://doi.org/10.1117/12.788056

KEYWORDS: Telescopes, Space telescopes, Planets, Exoplanets, Space operations, Stars, James Webb Space Telescope, Apodization, Sun, Earth's atmosphere

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Proceedings Article | 12 July 2008 Paper

Paper

Sensitivity analysis of the New Worlds starshade's shadow

Jonathan Arenberg, Ann Shipley, Webster Cash, Tiffany Glassman, Amy Lo

Proceedings Volume 7010, 70101V (2008) https://doi.org/10.1117/12.789468

KEYWORDS: Error analysis, Diffraction, Space telescopes, Telescopes, Spatial frequencies, Apodization, Planets, Stars, Tolerancing, Statistical analysis

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Proceedings Article | 12 July 2008 Paper

Paper

Analysis of exoplanet light curves with the New Worlds Observer

Phil Oakley, Webster Cash, Margaret Turnbull

Proceedings Volume 7010, 70103Y (2008) https://doi.org/10.1117/12.789810

KEYWORDS: Clouds, Planets, Reflectivity, Exoplanets, Data modeling, Earth's atmosphere, Signal to noise ratio, Bidirectional reflectance transmission function, Telescopes, Liquids

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Proceedings Article | 12 July 2008 Paper

Paper

The New Worlds Observer: scientific and technical advantages of external occulters

W. Cash, P. Oakley, M. Turnbull, T. Glassman, A. Lo, R. Polidan, S. Kilston, C. Noecker

Proceedings Volume 7010, 70101Q (2008) https://doi.org/10.1117/12.789717

KEYWORDS: Planets, Stars, Telescopes, Planetary systems, Coronagraphy, Exoplanets, Space telescopes, Apodization, Diffraction, Space operations

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Proceedings Article | 21 September 2007 Paper

Paper

Externally occulted terrestrial planet finder coronagraph: simulations and sensitivities

Richard Lyon, Sally Heap, Amy Lo, Webster Cash, Glenn Starkman, Robert Vanderbei, N. Jeremy Kasdin, Craig Copi

Proceedings Volume 6687, 668719 (2007) https://doi.org/10.1117/12.731755

KEYWORDS: Telescopes, Space telescopes, Planets, Coronagraphy, Stars, Binary data, Wavefronts, Signal attenuation, Speckle, Error analysis

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Proceedings Article | 20 September 2007 Paper

Paper

New Worlds Observer tolerance overview

Ann Shipley, Webster Cash, Jonathan Arenberg, Amy Lo

Proceedings Volume 6687, 66871A (2007) https://doi.org/10.1117/12.734850

KEYWORDS: Telescopes, Space telescopes, Tolerancing, Planets, Stars, Diffraction, Exoplanets, Space operations, Solar system, Error analysis

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Proceedings Article | 20 September 2007 Paper

Paper

White-light demonstration of one hundred parts per billion irradiance suppression in air by new starshade occulters

Douglas Leviton, Webster Cash, Brian Gleason, Michael Kaiser, Sarah Levine, Amy Lo, Eric Schindhelm, Ann Shipley

Proceedings Volume 6687, 66871B (2007) https://doi.org/10.1117/12.742927

KEYWORDS: Photometry, Sun, Light, Silicon, Telescopes, Sensors, Space telescopes, Mirrors, Raster graphics, Stars

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Proceedings Article | 20 September 2007 Paper

Paper

External occulters for direct observation of exoplanets: an overview

W. Cash, E. Schindhelm, J. Arenberg, A. Lo, R. Polidan, J. Kasdin, R. Vanderbei, S. Kilston, C. Noecker

Proceedings Volume 6687, 668712 (2007) https://doi.org/10.1117/12.732645

KEYWORDS: Planets, Telescopes, Space telescopes, Stars, Diffraction, Exoplanets, Planetary systems, Spectroscopy, Apodization, Tolerancing

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Proceedings Article | 19 September 2007 Paper

Paper

Laboratory studies of petal-shaped occulters

E. Schindhelm, A. Shipley, P. Oakley, D. Leviton, W. Cash, G. Card

Proceedings Volume 6693, 669305 (2007) https://doi.org/10.1117/12.734480

KEYWORDS: Sensors, Diffraction, Charge-coupled devices, Iris recognition, Telescopes, Apodization, Photometry, Space telescopes, Silicon, Exoplanets

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Proceedings Article | 13 September 2007 Paper

Paper

High-resolution soft x-ray spectroscopy for constellation X

Charles Lillie, Webster Cash, Nahum Arav, J. Michael Shull, Jeffrey Linsky

Proceedings Volume 6686, 668612 (2007) https://doi.org/10.1117/12.735473

KEYWORDS: X-rays, Spectroscopy, Optical design, Spectral resolution, Computer aided design, X-ray telescopes, X-ray astronomy, Absorption, Ultraviolet radiation, Telescopes

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Proceedings Article | 6 July 2006 Paper

Paper

Studies in thin diffraction gratings for flight applications

Ann Shipley, Brian Gleeson, Randall McEntaffer, Webster Cash

Proceedings Volume 6273, 62733K (2006) https://doi.org/10.1117/12.672288

KEYWORDS: Diffraction gratings, Silicon carbide, Optical design, Polymers, Reflection, Chemical vapor deposition, Silicon, Nickel, Distortion, Mirrors

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Proceedings Article | 15 June 2006 Paper

Paper

Kirkpatrick Baez spectrograph concepts for future space missions

Steve Osterman, Webster Cash

Proceedings Volume 6266, 626638 (2006) https://doi.org/10.1117/12.672399

KEYWORDS: Mirrors, Telescopes, Spectrographs, Diffraction gratings, Space telescopes, Space operations, Ray tracing, Grazing incidence, X-rays, X-ray telescopes

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Proceedings Article | 15 June 2006 Paper

Paper

A sounding rocket payload for x-ray observations of the Cygnus Loop

Randall McEntaffer, Webster Cash, Ann Shipley, Eric Schindhelm

Proceedings Volume 6266, 626644 (2006) https://doi.org/10.1117/12.671519

KEYWORDS: Collimators, X-rays, Sensors, Diffraction gratings, Rockets, Ions, Solids, Spectroscopy, Clouds, Spectral resolution

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Proceedings Article | 14 June 2006 Paper

Paper

The New Worlds Observer: using occulters to directly observe planets

W. Cash, E. Schindhelm, J. Arenberg, R. Polidan, S. Kilston, C. Noecker

Proceedings Volume 6265, 62651V (2006) https://doi.org/10.1117/12.672208

KEYWORDS: Planets, James Webb Space Telescope, Stars, Telescopes, Space telescopes, Planetary systems, Apodization, Tolerancing, Sensors, Solar system

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Proceedings Article | 14 June 2006 Paper

Paper

New Worlds Occulter performance: a first look

Jonathan Arenberg, Amy Lo, Webster Cash, Ronald Polidan

Proceedings Volume 6265, 62651W (2006) https://doi.org/10.1117/12.671957

KEYWORDS: Telescopes, Apodization, Light scattering, Tolerancing, Space telescopes, Planets, James Webb Space Telescope, Scattering, Manufacturing, Solids

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Proceedings Article | 13 June 2006 Paper

Paper

High-resolution x-ray spectroscopy with the reflection grating spectrometer of Constellation-X

Eric Schindhelm, Nahum Arav, Webster Cash

Proceedings Volume 6266, 62660C (2006) https://doi.org/10.1117/12.672911

KEYWORDS: Absorption, Data modeling, X-rays, Magnetoencephalography, Iron, Ultraviolet radiation, Ions, Signal to noise ratio, Spectroscopy, Ionization

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Proceedings Article | 13 June 2006 Paper

Paper

The Constellation-X reflection grating spectrometer

Jean Cottam, Webster Cash, Kathryn Flanagan, Ralf Heilmann, Gregory Prigozhin, Andrew Rasmussen, George Ricker, Mark Schattenburg, Eric Schindhelm

Proceedings Volume 6266, 62661X (2006) https://doi.org/10.1117/12.672227

KEYWORDS: Diffraction gratings, Roentgenium, Charge-coupled devices, Spectroscopy, Optical design, Mirrors, Spectral resolution, Sensors, X-rays, Reflection

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Proceedings Article | 8 October 2005 Paper

Paper

Sounding rocket payload development for x-ray observations of the Cygnus Loop

Randall McEntaffer, Webster Cash, Ann Shipley

Proceedings Volume 5900, 59001B (2005) https://doi.org/10.1117/12.615423

KEYWORDS: Collimators, X-rays, Sensors, Diffraction gratings, Rockets, Ions, Clouds, Spectroscopy, Solids, Spectral resolution

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Proceedings Article | 8 October 2005 Paper

Paper

Kirkpatrick-Baez optics for the Generation-X mission

Nishanth Rajan, Webster Cash

Proceedings Volume 5900, 59001F (2005) https://doi.org/10.1117/12.617176

KEYWORDS: Mirrors, Space telescopes, Telescopes, X-rays, Staring arrays, Sensors, Observatories, Optics manufacturing, X-ray optics, Spatial resolution

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Proceedings Article | 5 October 2005 Paper

Paper

Science simulations for the New Worlds Observer

Eric Schindhelm, Webster Cash, Sara Seager

Proceedings Volume 5905, 59051G (2005) https://doi.org/10.1117/12.617478

KEYWORDS: Telescopes, Planets, Device simulation, Galactic astronomy, Space telescopes, Stars, Solar system, Coded apertures, Absorption, Visible radiation

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Proceedings Article | 9 September 2005 Paper

Paper

Foil reflection grating mount for diffuse x-ray spectroscopy

Ann Shipley, Randall McEntaffer, Webster Cash

Proceedings Volume 5877, 587708 (2005) https://doi.org/10.1117/12.615413

KEYWORDS: X-rays, Optical design, Rockets, Optical alignment, Optical fabrication, Diffraction gratings, Nickel, Spectroscopy, Diffuse reflectance spectroscopy, X-ray astronomy

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Proceedings Article | 31 August 2005 Paper

Paper

Direct studies of exo-planets with the New Worlds Observer

Webster Cash, Jeremy Kasdin, Sara Seager, Jonathon Arenberg

Proceedings Volume 5899, 58990S (2005) https://doi.org/10.1117/12.617377

KEYWORDS: Planets, Telescopes, Stars, Space telescopes, Planetary systems, Sensors, Diffraction, Device simulation, Space operations, Imaging systems

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Proceedings Article | 20 October 2004 Paper

Paper

MAXIM science and technology

Webster Cash, Keith Gendreau

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551966

KEYWORDS: Mirrors, X-rays, Sensors, Interferometry, Interferometers, Stars, Space telescopes, Telescopes, X-ray imaging, Diffraction

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Proceedings Article | 12 October 2004 Paper

Paper

The New Worlds Observer: a mission for high-resolution spectroscopy of extra-solar terrestrial planets

Willard Simmons, Webster Cash, Sara Seager, Erik Wilkinson, N. Jeremy Kasdin, Robert Vanderbei, Naomi Chow, Erica Gralla, Johanna Kleingeld

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.552069

KEYWORDS: Planets, Space operations, Sensors, Space telescopes, Telescopes, Spectroscopy, Planetary systems, Exoplanets, Stars, Coded apertures

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Proceedings Article | 11 October 2004 Paper

Paper

The Constellation-X RGS options: raytrace modeling of the off-plane gratings

Kathryn Flanagan, John Davis, Ralf Heilmann, Alan Levine, Michael McGuirk, George Ricker, Mark Schattenburg, Michael Wise, Andrew Rasmussen, Jay Bookbinder, Mark Freeman, Terrance Gaetz, Diab Jerius, Dan Nguyen, William Podgorski, P. Reid, Webster Cash, Ann Shipley, Dennis Gallagher, Pei Huang, Steve Jordan

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.551766

KEYWORDS: Diffraction gratings, Spectral resolution, X-rays, Sensors, Roentgenium, Geometrical optics, Diffraction, Spectroscopy, Cameras, Space telescopes

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Proceedings Article | 11 October 2004 Paper

Paper

Off-plane grating mount tolerances for Constellation-X

Webster Cash, Ann Shipley

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.549476

KEYWORDS: Tolerancing, Diffraction gratings, X-rays, Telescopes, Diffraction, Grazing incidence, X-ray telescopes, Spectroscopy, Spectroscopes, Spectral resolution

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Proceedings Article | 11 October 2004 Paper

Paper

High-resolution x-ray spectroscopy of supernova remnants and the diffuse background

Randall McEntaffer, Webster Cash

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.552847

KEYWORDS: X-rays, Diffraction gratings, Spectroscopy, Rockets, Clouds, Sensors, Spectral resolution, Ionization, Data modeling, Ions

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Proceedings Article | 11 October 2004 Paper

Paper

MAXIM: the black hole imager

Keith Gendreau, Webster Cash, Paul Gorenstein, David Windt, Phil Kaaret, Chris Reynolds

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.551250

KEYWORDS: Mirrors, X-rays, Interferometers, X-ray optics, Sensors, Imaging systems, Spatial resolution, Zone plates, Interferometry, Space operations

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Proceedings Article | 11 October 2004 Paper

Paper

System performance model and error budget for MAXIM

Jim Leitch, Michael Lieber, Dennis Gallagher, Keith Gendreau, Webster Cash, Ann Shipley

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.552358

KEYWORDS: Mirrors, Space operations, Solar radiation models, Sensors, Systems modeling, Wavefronts, Optical alignment, Performance modeling, Imaging systems, Control systems

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Proceedings Article | 11 October 2004 Paper

Paper

Off-plane grating performance for Constellation-X

Steven Osterman, Randall McEntaffer, Webster Cash, Ann Shipley

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.551787

KEYWORDS: Diffraction gratings, Telescopes, Sensors, Diffraction, Holography, X-rays, Ions, Grazing incidence, Spectral resolution, Image processing

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Proceedings Article | 11 October 2004 Paper

Paper

Laboratory testbeds for broadband x-ray interferometry

Zaven Arzoumanian, Keith Gendreau, Webster Cash, Ann Shipley, Steven Queen

Proceedings Volume 5488, (2004) https://doi.org/10.1117/12.551731

KEYWORDS: X-rays, Sensors, Interferometers, Mirrors, Interferometry, X-ray optics, X-ray imaging, Grazing incidence, Charge-coupled devices, Aluminum

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Proceedings Article | 29 January 2004 Paper

Paper

X-ray test facility for diffraction gratings

Randall McEntaffer, Fred Hearty, Brian Gleeson, Webster Cash

Proceedings Volume 5168, (2004) https://doi.org/10.1117/12.506292

KEYWORDS: Monochromators, Diffraction gratings, X-rays, Diffraction, Grazing incidence, X-ray sources, Aluminum, Computer aided design, X-ray astronomy, X-ray diffraction

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Proceedings Article | 29 January 2004 Paper

Paper

MAXIM x-ray interferometry mission

Keith Gendreau, Webster Cash, Ann Shipley, Nicholas White

Proceedings Volume 5168, (2004) https://doi.org/10.1117/12.506198

KEYWORDS: Mirrors, Space operations, Sensors, X-rays, Tolerancing, Interferometers, Space telescopes, Charge-coupled devices, Telescopes, Stars

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Proceedings Article | 29 January 2004 Paper

Paper

X-ray performance of gratings in the extreme off-plane mount

Randall McEntaffer, Steve Osterman, Webster Cash, John Gilchrist, Jean Flamand, Bruno Touzet, Fransis Bonnemason, Christian Brach

Proceedings Volume 5168, (2004) https://doi.org/10.1117/12.506200

KEYWORDS: Diffraction gratings, Sensors, Holography, Diffraction, X-rays, Monochromators, Grazing incidence, X-ray astronomy, Roentgenium, Spectral resolution

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Proceedings Article | 29 January 2004 Paper

Paper

MAXIM Pathfinder: a practical configuration

Webster Cash, Keith Gendreau, Ann Shipley, Dennis Gallagher

Proceedings Volume 5168, (2004) https://doi.org/10.1117/12.506327

KEYWORDS: X-rays, Mirrors, Interferometers, Interferometry, X-ray astronomy, Stars, X-ray imaging, Sensors, Image resolution, X-ray optics

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Proceedings Article | 29 January 2004 Paper

Paper

Modeling optical performance of grazing-incidence x-ray interferometers

Dennis Gallagher, Webster Cash, Ann Shipley

Proceedings Volume 5168, (2004) https://doi.org/10.1117/12.506130

KEYWORDS: Interferometers, Mirrors, Space operations, Sensors, X-rays, Wavefronts, X-ray optics, Point spread functions, Grazing incidence, Tolerancing

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Proceedings Article | 11 March 2003 Paper

Paper

Off-plane gratings for Constellation-X

Randall McEntaffer, Webster Cash, Ann Shipley

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.461423

KEYWORDS: Telescopes, Roentgenium, Diffraction gratings, X-rays, Spectral resolution, Spectroscopy, Mirrors, X-ray telescopes, Solids, Astronomy

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Proceedings Article | 11 March 2003 Paper

Paper

System performance evaluation of the MAXIM concept with integrated modeling

Michael Lieber, Dennis Gallagher, Webster Cash, Ann Shipley

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.461483

KEYWORDS: Mirrors, Space operations, Integrated modeling, Metrology, Space telescopes, Geometrical optics, Tolerancing, Point spread functions, Control systems, Telescopes

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Proceedings Article | 11 March 2003 Paper

Paper

MAXIM interferometer tolerances and tradeoffs

Ann Shipley, Webster Cash, Keith Gendreau, Dennis Gallagher

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.461172

KEYWORDS: Mirrors, Tolerancing, Interferometers, Sensors, X-rays, Grazing incidence, Space operations, Optical design, Error analysis, Wavefronts

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Proceedings Article | 11 March 2003 Paper

Paper

MAXIM Pathfinder x-ray interferometry mission

Keith Gendreau, Webster Cash, Ann Shipley, Nicholas White

Proceedings Volume 4851, (2003) https://doi.org/10.1117/12.461316

KEYWORDS: Space operations, Sensors, Mirrors, X-rays, Space telescopes, Interferometers, Charge-coupled devices, Telescopes, Spatial resolution, Stars

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Proceedings Article | 26 February 2003 Paper

Paper

Requirements and options for a stable inertial frame for a 100-micro-arcsecond imaging telescope

Keith Gendreau, Jesse Leitner, Landis Markley, Webster Cash, Ann Shipley

Proceedings Volume 4852, (2003) https://doi.org/10.1117/12.460746

KEYWORDS: Stars, Space operations, Telescopes, Space telescopes, Sensors, Gyroscopes, Interferometers, X-rays, Photons, Target detection

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Proceedings Article | 26 February 2003 Paper

Paper

Maxim: micro-arcsecond x-ray imaging mission

Webster Cash

Proceedings Volume 4852, (2003) https://doi.org/10.1117/12.460915

KEYWORDS: X-rays, Mirrors, Interferometers, Interferometry, X-ray imaging, X-ray astronomy, Stars, Sensors, Image resolution, Telescopes

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Proceedings Article | 24 December 2002 Paper

Paper

Highly reflective uranium mirrors for astrophysics applications

David Allred, Matthew Squires, R. Steven Turley, Webster Cash, Ann Shipley

Proceedings Volume 4782, (2002) https://doi.org/10.1117/12.451359

KEYWORDS: Uranium, Reflectivity, Carbon, Mirrors, Nickel, X-rays, Oxides, Thin films, Chemical elements, Oxidation

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Proceedings Article | 20 December 2001 Paper

Paper

X-ray interferometry: ultra-high-resolution astronomy

Webster Cash, Ann Shipley, Randall McEntaffer

Proceedings Volume 4506, (2001) https://doi.org/10.1117/12.450952

KEYWORDS: Mirrors, Interferometers, X-rays, X-ray astronomy, Space operations, Interferometry, Sensors, X-ray optics, Stars, Astronomy

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Proceedings Article | 5 November 2001 Paper

Paper

Alignment of a grazing incidence x-ray interferometer

Ann Shipley, Webster Cash

Proceedings Volume 4444, (2001) https://doi.org/10.1117/12.447311

KEYWORDS: Mirrors, X-rays, Interferometers, Sensors, Grazing incidence, Tolerancing, Fringe analysis, Ultraviolet radiation, Diffraction, Wavefronts

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Proceedings Article | 2 November 2000 Paper

Paper

High-uniformity collimator for x-ray proximity lithography

Webster Cash

Proceedings Volume 4144, (2000) https://doi.org/10.1117/12.405897

KEYWORDS: Photomasks, Collimators, X-rays, Mirrors, X-ray lithography, Lithography, X-ray sources, X-ray optics, Grazing incidence, Sensors

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Proceedings Article | 18 July 2000 Paper

Paper

The Maxim Pathfinder Mission: x-ray imaging at 100 micro-arcseconds

Webster Cash, Nicholas White, Marshall Joy

Proceedings Volume 4012, (2000) https://doi.org/10.1117/12.391561

KEYWORDS: Mirrors, Interferometers, Sensors, Space operations, X-rays, Target acquisition, Charge-coupled devices, X-ray imaging, Interferometry, Space telescopes

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Proceedings Article | 18 July 2000 Paper

Paper

Grazing incidence optics for x-ray interferometry

Ann Shipley, Webster Cash, Marshall Joy

Proceedings Volume 4012, (2000) https://doi.org/10.1117/12.391584

KEYWORDS: Mirrors, X-rays, Error analysis, Adhesives, Mirror mounts, Wavefronts, Tolerancing, Finite element methods, Interferometers, X-ray optics

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Proceedings Article | 18 July 2000 Paper

Paper

Experimental results from a grazing incidence x-ray interferometer

Marshall Joy, Ann Shipley, Webster Cash, James Carter, David Zissa, Manfred Cuntz

Proceedings Volume 4012, (2000) https://doi.org/10.1117/12.391562

KEYWORDS: X-rays, Interferometers, Mirrors, Extreme ultraviolet, Grazing incidence, Charge-coupled devices, Fringe analysis, X-ray imaging, X-ray astronomy, Sensors

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Proceedings Article | 23 November 1999 Paper

Paper

High-uniformity collimator for x-ray proximity lithography

Webster Cash

Proceedings Volume 3767, (1999) https://doi.org/10.1117/12.371142

KEYWORDS: Photomasks, Mirrors, Collimators, X-rays, X-ray lithography, Lithography, X-ray optics, Grazing incidence, X-ray sources, Reflectivity

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Proceedings Article | 22 October 1999 Paper

Paper

Large-area reflection grating spectrometer for the Constellation-X mission

Steven Kahn, Frits Paerels, J. Peterson, Andrew Rasmussen, Mark Schattenburg, George Ricker, Mark Bautz, John Doty, Gregory Prigozhin, John Nousek, David Burrows, Joanne Hill, Webster Cash

Proceedings Volume 3765, (1999) https://doi.org/10.1117/12.366491

KEYWORDS: Spectroscopy, Roentgenium, Diffraction gratings, Spectral resolution, Charge-coupled devices, Telescopes, Space telescopes, Diffraction, Silicon, Quantum efficiency

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Proceedings Article | 28 September 1999 Paper

Paper

Development of a grazing incidence x-ray interferometer

Ann Shipley, Webster Cash, Steven Osterman, Marshall Joy, James Carter

Proceedings Volume 3786, (1999) https://doi.org/10.1117/12.363807

KEYWORDS: Mirrors, Interferometers, X-rays, X-ray optics, Grazing incidence, Tolerancing, Sensors, Diffraction, Charge-coupled devices, X-ray astronomy

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Proceedings Article | 19 July 1996 Paper

Paper

Subarcsecond x-ray telescope for imaging the solar corona in the 0.25- to 1.2-keV band

Dennis Gallagher, Webster Cash, Schuyler Jelsma, Jason Farmer

Proceedings Volume 2805, (1996) https://doi.org/10.1117/12.245085

KEYWORDS: Optical spheres, X-ray telescopes, Telescopes, X-rays, Spherical lenses, Relays, Surface finishing, Grazing incidence, Collimators, Polishing

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Proceedings Article | 1 September 1995 Paper

Paper

Extreme ultraviolet spectrograph sounding rocket payload: recent modifications for planetary observations in the EUV/FUV

David Slater, S. Alan Stern, John Scherrer, Webster Cash, James Green, Erik Wilkinson

Proceedings Volume 2518, (1995) https://doi.org/10.1117/12.218378

KEYWORDS: Extreme ultraviolet, Spectrographs, Sensors, Telescopes, Rockets, Stars, Jupiter, Venus, Calibration, Space telescopes

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Proceedings Article | 1 November 1993 Paper

Paper

Optimized holographic grating solution for Rowland circle spectrographs

Scott Sarlin, Webster Cash, James Green

Proceedings Volume 1945, (1993) https://doi.org/10.1117/12.158778

KEYWORDS: Holography, Monochromatic aberrations, Spectrographs, Diffraction gratings, Diffraction, Ray tracing, Spherical lenses, Optical design, Rockets, Astronomy

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Proceedings Article | 1 November 1993 Paper

Paper

Echelle class spectroscopy with a single holographic grating

James Green, Scott Sarlin, Webster Cash

Proceedings Volume 1945, (1993) https://doi.org/10.1117/12.158796

KEYWORDS: Sensors, Holography, Spectroscopy, Spectrographs, Diffraction gratings, Far ultraviolet, Diffraction, Monochromatic aberrations, Astrophysics, Reflectivity

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Proceedings Article | 8 October 1992 Paper

Paper

X-ray testing of grazing incidence optics fabricated at the University of Colorado

Dennis Gallagher, Webster Cash

Proceedings Volume 1743, (1992) https://doi.org/10.1117/12.130708

KEYWORDS: X-rays, Mirrors, X-ray astronomy, X-ray telescopes, X-ray imaging, Sensors, Polishing, Surface finishing, Telescopes, Grazing incidence

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Proceedings Article | 1 February 1991 Paper

Paper

Fabrication of a grazing-incidence telescope by grinding and polishing techniques on aluminum

Dennis Gallagher, Webster Cash, James Green

Proceedings Volume 1343, (1991) https://doi.org/10.1117/12.23188

KEYWORDS: Telescopes, Polishing, Space telescopes, Astronomy, Astronomical imaging, X-ray optics, Mirrors, Ronchi rulings, X-ray telescopes, Astronomical telescopes

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Showing 5 of 97 publications

Conference Committee Involvement (23)

EUV and X-ray Optics: Synergy between Laboratory and Space IX

7 April 2025 | Prague, Czech Republic

EUV and X-ray Optics: Synergy between Laboratory and Space VIII

26 April 2023 | Prague, Czech Republic

EUV and X-ray Optics, Sources, and Instrumentation

19 April 2021 | Online Only, Czech Republic

EUV and X-ray Optics: Synergy between Laboratory and Space

3 April 2019 | Prague, Czech Republic

EUV and X-ray Optics: Synergy between Laboratory and Space

26 April 2017 | Prague, Czech Republic

EUV and X-ray Optics: Synergy between Laboratory and Space

13 April 2015 | Prague, Czech Republic

Optics for EUV, X-Ray, and Gamma-Ray Astronomy VI

26 August 2013 | San Diego, California, United States

EUV and X-ray Optics: Synergy between Laboratory and Space III

17 April 2013 | Prague, Czech Republic

Optics for EUV, X-Ray, and Gamma-Ray Astronomy V

23 August 2011 | San Diego, California, United States

UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts V

21 August 2011 | San Diego, California, United States

EUV and X-Ray Optics: Synergy between Laboratory and Space

20 April 2011 | Prague, Czech Republic

Optics for EUV, X-Ray, and Gamma-Ray Astronomy IV

4 August 2009 | San Diego, California, United States

UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts IV

3 August 2009 | San Diego, California, United States

EUV and X-ray Optics: Synergy between Laboratory and Space

20 April 2009 | Prague, Czech Republic

Optics for EUV, X-Ray, and Gamma-Ray Astronomy III

29 August 2007 | San Diego, California, United States

UV/Optical/IR Space Telescopes: Innovative Technologies and Concepts III

26 August 2007 | San Diego, California, United States

Space Telescopes and Instrumentation II: Ultraviolet to Gamma Ray

24 May 2006 | Orlando, Florida , United States

Optics for EUV, X-Ray, and Gamma-Ray Astronomy II

3 August 2005 | San Diego, California, United States

UV-Gamma Ray Space Telescope Systems

21 June 2004 | Glasgow, United Kingdom

Optics for EUV, X-Ray, and Gamma-Ray Astronomy

5 August 2003 | San Diego, California, United States

Interferometry in Space

26 August 2002 | Waikoloa, Hawai'i, United States

X-ray and Gamma-ray Telescopes and Instruments for Astronomy

24 August 2002 | Waikoloa, Hawai'i, United States

X-Ray Optics, Instruments, and Missions III

27 March 2000 | Munich, Germany

Showing 5 of 23 Conference Committees

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