William L. Eichhorn
Goddard Space Flight Center
23 Papers
95 Citations
William L. Eichhorn is an academic researcher from Goddard Space Flight Center. The author has contributed to research in topics: James Webb Space Telescope & Telescope. The author has an hindex of 6, co-authored 23 publications.
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Papers
Optical alignment measurements at Goddard Space Flight Center.
TL;DR: The Optical Alignment Facility at Goddard Space Flight Center has undergone significant evolution since it was last described in 1968 and the data analysis procedures have been brought to the point of being done on a desktop computer with turnaround times of approximately 4 h.
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The Optical Telescope Element Simulator for the James Webb Space Telescope
Pamela S. Davila,Brent J. Bos,Edward Cheng,Bill Chang,William L. Eichhorn,Bradley J. Frey,Mario Garza,Qian Gong,Bradford Greeley,Jeff Guzek,Claef Hakun,Lars Hovmand,Jeff Kirk,David A. Kubalak,Douglas B. Leviton,Adrian Nagle,Rich Nyquist,Thai Pham,F. David Robinson,Derek Sabatke,Joseph F. Sullivan,Paul Volmer,Rob VonHandorf,Richard N. Youngworth +23 more
TL;DR: In this article, the authors describe the optical test program of the James Webb Space Telescope Observatory and provide a brief overview of the optical simulator used to verify the performance of the Integrated Science Instrument Module Element (ISIM).
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JWST’s optical telescope simulator for verification of the Integrated Science Instrument Module
Joseph F. Sullivan,William L. Eichhorn,Derek Sabatke,C. R. Davis,Jenny Chu,Severine C. Tournois,David A. Kubalak,Bradford Greeley,Randy A. Kimble,Randal Telfer,George F. Hartig,Raymond G. Ohl,Jeffrey R. Kirk,Robert J. von Handorf,Erin M. Wolf,William S. C. Chang +15 more
TL;DR: In this paper, the authors describe the alignment to the JWST coordinate system at cryogenic temperatures, OSIM optical performance, repeatability, and its role in testing the cryogenic optical performance of the individual Science Instruments in addition to providing calibration data needed for flight operations.
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Optical Testing and Verification Methods for the James Webb Space Telescope Integrated Science Instrument Module Element
Scott Antonille,Cherie L. Miskey,Raymond G. Ohl,Scott Rohrbach,David L. Aronstein,Andrew Bartoszyk,Charles W. Bowers,Emmanuel Cofie,Nicholas R. Collins,Brian J. Comber,William L. Eichhorn,Alistair Glasse,Renee Gracey,George F. Hartig,Joseph M. Howard,Douglas M. Kelly,Randy A. Kimble,Jeffrey R. Kirk,David A. Kubalak,Wayne B. Landsman,Don J. Lindler,Eliot M. Malumuth,Michael Maszkiewicz,Marcia J. Rieke,N. Rowlands,Derek Sabatke,Corbett Smith,J. Scott Smith,Joseph F. Sullivan,Randal Telfer,Maurice te Plate,M. Begona Vila,Gerry Warner,David Wright,Raymond H. Wright,Julia Zhou,Thomas P. Zielinski +36 more
TL;DR: In this paper, the authors describe test and analysis methods for optical performance verification of the Integrated Science Instrument Module (ISIM) with an emphasis on the processes used to plan and execute the test.
Generalized conic concentrators
TL;DR: Explicit forms for the six coefficients of a generalized quadric surface are derived in terms of the parameters of a tilted and displaced parent elliptical or hyperbolic surface.
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