Greg Wenzel
Qinetiq
7 Papers
7 Citations
Greg Wenzel is an academic researcher from Qinetiq. The author has contributed to research in topics: James Webb Space Telescope & Telescope. The author has an hindex of 3, co-authored 7 publications.
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Papers
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 J. Comber,George F. Hartig,Joseph M. Howard,Derek Sabatke,Greg Wenzel,Raymond G. Ohl +8 more
TL;DR: In this paper, the authors performed extensive structural, thermal, and optical performance (STOP) modeling in support of all phases of the Integrated Science Instrument Module (ISIM) development.
A Toolbox of Metrology-Based Techniques for Optical System Alignment
Phillip Coulter,Raymond G. Ohl,Peter Blake,Brent J. Bos,Victor J. Chambers,William L. Eichhorn,Jeffrey S. Gum,Theodore Hadjimichael,John G. Hagopian,Joseph E. Hayden,Samuel E. Hetherington,David A. Kubalak,Kyle F. Mclean,Joseph McMann,Kevin Redman,Henry P. Sampler,Greg Wenzel,Jerrod Young +17 more
TL;DR: An overview of a subset of the capabilities and techniques used on several recent projects in a “toolbox” format is provided, from small-scale optical alignment of sensors to mirror and bench examples that make use of various large-volume metrology techniques.
Alignment of the James Webb Space Telescope Integrated Science Instrument Module Element
Theo Hadjimichael,Raymond G. Ohl,Scott Antonille,David L. Aronstein,Andrew Bartoszyk,Josh Berrier,Emmanuel Cofie,Phil Coulter,Renee Gracey,Joseph S. Hayden,Joseph M. Howard,Jason E. Hylan,David A. Kubalak,Kyle F. Mclean,Cherie L. Miskey,Kevin Redman,Scott Rohrbach,Derek Sabatke,Randal Telfer,Greg Wenzel,Thomas P. Zielinski,Joe H. Sullivan,George F. Hartig,William L. Eichhorn +23 more
TL;DR: In this article, the authors focus on key aspects of absolute, optical-mechanical alignment for NASA's James Webb Space Telescope (JWST) and discuss various metrology and alignment techniques.
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Large volume, optical and opto-mechanical metrology techniques for ISIM on JWST
Theodore Hadjimichael,Jeffrey S. Gum,Timothy J. Madison,Raymond G. Ohl,Joseph E. Hayden,Kyle F. Mclean,Jerrod Young,Philip Coulter,Jason E. Hylan,Linda A. Miner,Kevin Redman,Greg Wenzel,Manal Khreishi +12 more
- 07 Mar 2015
TL;DR: The final flight build of the Integrated Science Instrument Module (ISIM) element of the James Webb Space Telescope is the culmination of years of work across many disciplines and partners as discussed by the authors.
Metrology for Trending Alignment of the James Webb Space Telescope Before and After Ambient Environmental Testing
Theo Hadjimichael,Raymond G. Ohl,Joshua Berrier,Jeffery S. Gum,Joseph S. Hayden,Manal Khreishi,Kyle Mclean,Kevin Redman,Joe H. Sullivan,Greg Wenzel,Jerrod Young,William L. Eichhorn +11 more
TL;DR: In this paper, the authors report on the metrology operations conducted to determine any changes in subassembly alignment, including primary mirror segments with respect to each other, the secondary mirror to its support structure, the tertiary mirror assembly to the backplane of the telescope and ultimately to the ISIM.