Open AccessIntegrated modeling activities for the James Webb Space Telescope: structural-thermal-optical analysis
Author(s) -
John D. Johnston,
Joseph M. Howard,
Gary E. Mosier,
Keith Parrish,
Mark A. McGinnis,
A. Marcel Bluth,
Kevin Kim,
Kong Q. Ha
Publication year - 2004
Publication title -
proceedings of spie, the international society for optical engineering/proceedings of spie
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.192
H-Index - 176
eISSN - 1996-756X
pISSN - 0277-786X
DOI - 10.1117/12.551704
Subject(s) - james webb space telescope , optical telescope , primary mirror , telescope , wavefront , observatory , optics , spitzer space telescope , physics , adaptive optics , distortion (music) , computer science , astronomy , optoelectronics , amplifier , cmos
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.
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