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Proceedings Paper

HYPATIA and STOIC: an active optics system for a large space telescope
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Paper Abstract

The next generation of UVOIR space telescopes will be required to provide excellent wavefront control despite perturbations due to thermal changes, gravity release and vibrations. The STOIC project is a response to an ESA Invitation to Tender to develop an active optics correction chain for future space telescopes. The baseline space telescope being considered is a two-mirror, 4m telescope with a monolithic primary mirror – we refer to this concept as Hypatia. The primary mirror diameter could be extended, but is limited in the near future by launch vehicle dimensions. A deformable mirror (pupil diameter 110mm) will be an integral part of the telescope design; it is being designed for high precision and the ability to maintain a stable form over long periods of time. The secondary mirror of the telescope will be activated to control tip-tilt, defocus and alignment with the primary. Wavefront sensing will be based on phase diversity and a dedicated Shack-Hartmann wavefront sensor. The project will develop a laboratory prototype to demonstrate key aspects of the active correction chain. We present the current state of the preliminary design for both the Hypatia space telescope and the laboratory breadboard.

Paper Details

Date Published: 29 July 2016
PDF: 14 pages
Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 990469 (29 July 2016); doi: 10.1117/12.2233277
Show Author Affiliations
Nicholas Devaney, National Univ. of Ireland, Galway (Ireland)
Claudia Reinlein, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Nicolas Lange, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Friedrich-Schiller-Univ. Jena (Germany)
Matthias Goy, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Alexander Goncharov, National Univ. of Ireland, Galway (Ireland)
Pascal Hallibert, European Space Research and Technology Ctr. (Netherlands)


Published in SPIE Proceedings Vol. 9904:
Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave
Howard A. MacEwen; Giovanni G. Fazio; Makenzie Lystrup; Natalie Batalha; Nicholas Siegler; Edward C. Tong, Editor(s)

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