Dr. Gregory W. Wenzel Profile

Dr. Gregory W. Wenzel

Optical Engineer

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Publications (12)

Proceedings Article | 22 August 2017 Paper

Alignment and testing of critical interface fixtures for the James Webb Space Telescope

Kyle McLean, Paul Bagdanove, Joshua Berrier, Emmanuel Cofie, Tiffany Glassman, Theodore Hadjimichael, Eric Johnson, Joshua Levi, Amy Lo, Joseph McMann, Raymond Ohl, Dean Osgood, James Parker, Kevin Redman, Vicki Roberts, Matthew Stephens, Adam Sutton, Greg Wenzel, Jerrod Young

Proceedings Volume 10377, 103770H (2017) https://doi.org/10.1117/12.2272790

KEYWORDS: James Webb Space Telescope, Observatories, Optical alignment, Metrology, Space telescopes, Infrared telescopes, Astronomical telescopes, Telescopes

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Proceedings Article | 22 August 2017 Paper

Metrology for trending alignment of the James Webb Space Telescope before and after ambient environmental testing

Theo Hadjimichael, Raymond Ohl, Josh Berrier, Jeff Gum, Joseph Hayden, Manal Khreishi, Kyle McLean, Kevin Redman, Joseph Sullivan, Greg Wenzel, William Eichhorn, Jerrod Young

Proceedings Volume 10377, 103770I (2017) https://doi.org/10.1117/12.2273991

KEYWORDS: James Webb Space Telescope, Metrology, Space telescopes, Mirrors, Optical alignment, Telescopes, Infrared telescopes, Optical components, Optical fabrication, Astronomical telescopes

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Proceedings Article | 20 October 2016 Presentation + Paper

A toolbox of metrology-based techniques for optical system alignment

Phillip Coulter, Raymond Ohl, Peter Blake, Brent Bos, Victor Chambers, William Eichhorn, Jeffrey Gum, Theodore Hadjimichael, John Hagopian, Joseph Hayden, Samuel Hetherington, David Kubalak, Kyle Mclean, Joseph McMann, Kevin Redman, Henry Sampler, Greg Wenzel, Jerrod Young

Proceedings Volume 9951, 995108 (2016) https://doi.org/10.1117/12.2239070

KEYWORDS: Optical alignment, Metrology, Optical components, James Webb Space Telescope, Mirrors, Telescopes, Lawrencium, Sensors, Spherical lenses, Optical benches

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Proceedings Article | 18 October 2016 Paper

Alignment of the James Webb Space Telescope Integrated Science Instrument Module Element

Theo Hadjimichael, Raymond Ohl, Scott Antonille, David Aronstein, Andrew Bartoszyk, Josh Berrier, Emmanuel Cofie, Phil Coulter, Renee Gracey, Joseph Hayden, Joseph Howard, Jason Hylan, David Kubalak, Kyle McLean, Cherie Miskey, Kevin Redman, Scott Rohrbach, Derek Sabatke, Randal Telfer, Greg Wenzel, Thomas Zielinski, Joseph Sullivan, George Hartig, William Eichhorn

Proceedings Volume 9951, 99510C (2016) https://doi.org/10.1117/12.2238829

KEYWORDS: Optical alignment, James Webb Space Telescope, Cryogenics, Metrology, Virtual colonoscopy, Interfaces, Calibration, Computer aided design, Mirrors, Finite element methods

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Proceedings Article | 10 August 2016 Paper

Structural, thermal, and optical performance (STOP) modeling and results for the James Webb Space Telescope integrated science instrument module

Renee Gracey, Andrew Bartoszyk, Emmanuel Cofie, Brian Comber, George Hartig, Joseph Howard, Derek Sabatke, Greg Wenzel, Raymond Ohl

Proceedings Volume 9911, 99111A (2016) https://doi.org/10.1117/12.2233641

KEYWORDS: Thermal modeling, Performance modeling, James Webb Space Telescope, Thermography, Instrument modeling, Systems modeling, Motion models, Temperature metrology, Finite element methods, Error analysis

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Proceedings Article | 8 September 2014 Paper

Ambient optomechanical alignment and pupil metrology for the flight instruments aboard the James Webb Space Telescope

Phillip Coulter, Alexander Beaton, Jeffery Gum, Theodore Hadjimichael, Joseph Hayden, Susann Hummel, Jason Hylan, David Lee, Timothy Madison, Michael Maszkiewicz, Kyle Mclean, Joseph McMann, Markus Melf, Linda Miner, Raymond Ohl, Kevin Redman, Andreas Roedel, Paul Schweiger, Maurice Te Plate, Martyn Wells, Greg Wenzel, Patrick Williams, Jerrod Young

Proceedings Volume 9195, 91950G (2014) https://doi.org/10.1117/12.2065017

KEYWORDS: Lawrencium, Silicon, Optical alignment, Virtual colonoscopy, James Webb Space Telescope, Metrology, Space telescopes, Telescopes, Finite element methods, Mirrors

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Proceedings Article | 13 September 2011 Paper

Lidar metrology for prescription characterization and alignment of large mirrors

B. Eegholm, W. Eichhorn, R. von Handorf, J. Hayden, R. Ohl, G. Wenzel

Proceedings Volume 8131, 81310I (2011) https://doi.org/10.1117/12.895012

KEYWORDS: Mirrors, Lawrencium, LIDAR, Spherical lenses, Signal detection, Metrology, Optical testing, Sensors, Optical alignment, James Webb Space Telescope

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Proceedings Article | 22 August 2009 Paper

Optical metrology of the JWST Integrated Science Instrument Module test platform

Joseph Stock, Joseph Connelly, Maria Nowak, Gregory Wenzel, Kevin Redman

Proceedings Volume 7433, 743304 (2009) https://doi.org/10.1117/12.824237

KEYWORDS: Calibration, Cryogenics, Metrology, Information technology, Interfaces, Cameras, James Webb Space Telescope, Spherical lenses, Optical alignment, Photogrammetry

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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 | 2 September 2008 Paper

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

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

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

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

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Proceedings Article | 7 July 2006 Paper

Metrology and test requirements for movement of the RAS/HOMS test facility to NASA-GSFC

Greg Wenzel, Kevin Redman, William Eichhorn

Proceedings Volume 6273, 62733I (2006) https://doi.org/10.1117/12.670044

KEYWORDS: Optical alignment, Telescopes, Reticles, Metrology, Device simulation, Photogrammetry, Interfaces, Space telescopes, Interferometry, Optical components

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Proceedings Article | 13 June 1995 Paper

Lessons learned in simulating a command center

Gregory Mack, Robert Cantor, Gregory Wenzel

Proceedings Volume 2495, (1995) https://doi.org/10.1117/12.211834

KEYWORDS: Sensors, Human-machine interfaces, Distributed interactive simulations, Virtual reality, Databases, Computer architecture, Data communications, Device simulation, Control systems, Systems modeling

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Showing 5 of 12 publications

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