Integrated modeling activities for the James Webb Space Telescope: structural-thermal-optical analysis

John D. Johnston; Joseph M. Howard; Gary E. Mosier; Keith A. Parrish; Mark A. McGinnis; A. Marcel Bluth; Kevin Kim; Kong Q. Ha

doi:10.1117/12.551704

12 October 2004 Integrated modeling activities for the James Webb Space Telescope: structural-thermal-optical analysis

John D. Johnston, Joseph M. Howard, Gary E. Mosier, Keith A. Parrish, Mark A. McGinnis, A. Marcel Bluth, Kevin Kim, Kong Q. Ha

Author Affiliations +

Proceedings Volume 5487, Optical, Infrared, and Millimeter Space Telescopes; (2004) https://doi.org/10.1117/12.551704
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

The James Web Space Telescope (JWST) is a large, infrared-optimized space telescope scheduled for launch in 2011. This is a continuation of a series of papers on modeling activities for JWST. The structural-thermal-optical, often referred to as "STOP", analysis process is used to predict the effect of thermal distortion on optical performance. The benchmark STOP analysis for JWST assesses the effect of an observatory slew on wavefront error. Temperatures predicted using geometric and thermal math models are mapped to a structural finite element model in order to predict thermally induced deformations. Motions and deformations at optical surfaces are then input to optical models, and optical performance is predicted using either an optical ray trace or a linear optical analysis tool. In addition to baseline performance predictions, a process for performing sensitivity studies to assess modeling uncertainties is described.

Citation Download Citation

John D. Johnston, Joseph M. Howard, Gary E. Mosier, Keith A. Parrish, Mark A. McGinnis, A. Marcel Bluth, Kevin Kim, and Kong Q. Ha "Integrated modeling activities for the James Webb Space Telescope: structural-thermal-optical analysis", Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); https://doi.org/10.1117/12.551704

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