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Proceedings Paper

The ESA Herschel Telescope Tiger Team metrology review: modeling
Author(s): Brian E. Catanzaro; Dominic Doyle; Bas Fransen; Julian Prowald; Amelia Koch
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Paper Abstract

ESA commissioned a Tiger Team to review the discrepancy between the prediction and measurement of the telescope back focal length. A team of 16 engineers and scientists collocated at ESA's Estec facility to review the finite element models, optical models, and supporting data to validate the methodology of prediction and verify the results. The team used several modeling techniques including: paraxial models, first order thermal expansion models, full system and metrology raytracing, deterministic and stochastic finite element models. The techniques, assumptions, and results will be discussed.

Paper Details

Date Published: 12 July 2008
PDF: 10 pages
Proc. SPIE 7010, Space Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter, 70102S (12 July 2008); doi: 10.1117/12.789239
Show Author Affiliations
Brian E. Catanzaro, CFE Services (United States)
Dominic Doyle, ESA Estec (Netherlands)
Bas Fransen, AOES Group B.V. (Netherlands)
Julian Prowald, ESA Estec (Netherlands)
Amelia Koch, German Aerospace Ctr., Institute of Aerospace Medicine (Germany)

Published in SPIE Proceedings Vol. 7010:
Space Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter
Jacobus M. Oschmann Jr.; Mattheus W. M. de Graauw; Howard A. MacEwen, Editor(s)

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