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Proceedings Paper

Implementation of differential wavefront sampling in optical alignment of pupil-segmented telescope systems
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Paper Abstract

We describe the implementation of differential wavefront sampling(DWS) in optical alignment of a pupil-segmented telescope system. As a wavefront-based optical alignment method, DWS can efficiently provide estimations of misalignments present in an optical system by deliberately perturbing optical elements in a systematic manner. This has been demonstrated in our previous numerical studies with realistic uncertainties in wavefront measurements, motion control, and optical surface deformations, suggesting that the method has potential in optical alignment and phasing of pupil-segmented systems such as the future Extremely Large Telescopes (ELTs). The basic idea and procedures of DWS are first described. We then present and discuss preliminary simulations using the currently proposed European Extremely Large Telescope (E-ELT) as an example system.

Paper Details

Date Published: 7 July 2008
PDF: 11 pages
Proc. SPIE 7017, Modeling, Systems Engineering, and Project Management for Astronomy III, 70171T (7 July 2008); doi: 10.1117/12.789160
Show Author Affiliations
Hanshin Lee, Univ. of Oxford (United Kingdom)
Gavin B. Dalton, Univ. of Oxford (United Kingdom)
Rutherford Appleton Lab. (United Kingdom)
Ian A. J. Tosh, Rutherford Appleton Lab. (United Kingdom)
Sug-Whan Kim, Space Optics Lab., Yonsei Univ. (South Korea)

Published in SPIE Proceedings Vol. 7017:
Modeling, Systems Engineering, and Project Management for Astronomy III
George Z. Angeli; Martin J. Cullum, Editor(s)

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