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Proceedings Paper

JWST’s optical telescope simulator for verification of the Integrated Science Instrument Module
Author(s): Joseph F. Sullivan; William L. Eichhorn; Derek S. Sabatke; Clinton R. Davis; Jenny Chu; Severine C. Tournois; David A. Kubalak; Bradford W. Greeley; Randy A. Kimble; Randal C. Telfer; George F. Hartig; Raymond G. Ohl; Jeffrey R. Kirk; Robert J. von Handorf; Erin M. Wolf; William S. Chang
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Paper Abstract

OSIM is a full field, cryogenic, optical simulator of the James Webb Space Telescope (JWST) Optical Telescope Element (OTE). It is the “Master Tool” for verifying the cryogenic alignment and optical performance of the JWST Integrated Science Instrument Module (ISIM) by providing simulated point source/star images individually or simultaneously to each of the four Science Instruments in ISIM. Additionally, each star image can be scanned in focus to support the evaluation of both image quality and best focus for each Science Instrument. OSIM has recently completed supporting the ISIM performance verification test campaign which spanned three separate cryogenic test campaigns over 3 years. In this paper, we 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.

Paper Details

Date Published: 27 September 2016
PDF: 20 pages
Proc. SPIE 9951, Optical System Alignment, Tolerancing, and Verification X, 99510E (27 September 2016); doi: 10.1117/12.2237834
Show Author Affiliations
Joseph F. Sullivan, Ball Aerospace & Technologies Corp. (United States)
William L. Eichhorn, NASA Goddard Space Flight Ctr. (United States)
Derek S. Sabatke, Ball Aerospace & Technologies Corp. (United States)
Clinton R. Davis, Genesis Solutions Engineering (United States)
Jenny Chu, Orbital Sciences Corp. (United States)
Severine C. Tournois, Sigma Space Corp. (United States)
David A. Kubalak, NASA Goddard Space Flight Ctr. (United States)
Bradford W. Greeley, NASA Goddard Space Flight Ctr. (United States)
Randy A. Kimble, NASA Goddard Space Flight Ctr. (United States)
Randal C. Telfer, Space Telescope Science Institute (United States)
George F. Hartig, Space Telescope Science Institute (United States)
Raymond G. Ohl, NASA Goddard Space Flight Ctr. (United States)
Jeffrey R. Kirk, Genesis Solutions Engineering (United States)
Robert J. von Handorf, Ball Aerospace & Technologies Corp. (United States)
Erin M. Wolf, Genesis Solutions Engineering (United States)
William S. Chang, Edge Space Systems, Inc. (United States)


Published in SPIE Proceedings Vol. 9951:
Optical System Alignment, Tolerancing, and Verification X
José Sasián; Richard N. Youngworth, Editor(s)

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JWST’s optical telescope simulator for verification of the Integrated Science Instrument Module



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