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Proceedings Paper

SPEED: the segmented pupil experiment for exoplanet detection
Author(s): P. Martinez; Olivier Preis; C. Gouvret; J. Dejonghe; J.-B. Daban; A. Spang; F. Martinache; M. Beaulieu; P. Janin-Potiron; L. Abe; Y. Fantei-Caujolle; D. Mattei; S. Ottogalli
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Paper Abstract

Searching for nearby exoplanets with direct imaging is one of the major scientific drivers for both space and groundbased programs. While the second generation of dedicated high-contrast instruments on 8-m class telescopes is about to greatly expand the sample of directly imaged planets, exploring the planetary parameter space to hitherto-unseen regions ideally down to Terrestrial planets is a major technological challenge for the forthcoming decades. This requires increasing spatial resolution and significantly improving high contrast imaging capabilities at close angular separations. Segmented telescopes offer a practical path toward dramatically enlarging telescope diameter from the ground (ELTs), or achieving optimal diameter in space. However, translating current technological advances in the domain of highcontrast imaging for monolithic apertures to the case of segmented apertures is far from trivial. SPEED – the segmented pupil experiment for exoplanet detection – is a new instrumental facility in development at the Lagrange laboratory for enabling strategies and technologies for high-contrast instrumentation with segmented telescopes. SPEED combines wavefront control including precision segment phasing architectures, wavefront shaping using two sequential high order deformable mirrors for both phase and amplitude control, and advanced coronagraphy struggled to very close angular separations (PIAACMC). SPEED represents significant investments and technology developments towards the ELT area and future spatial missions, and will offer an ideal cocoon to pave the road of technological progress in both phasing and high-contrast domains with complex/irregular apertures. In this paper, we describe the overall design and philosophy of the SPEED bench.

Paper Details

Date Published: 22 July 2014
PDF: 10 pages
Proc. SPIE 9145, Ground-based and Airborne Telescopes V, 91454E (22 July 2014); doi: 10.1117/12.2055338
Show Author Affiliations
P. Martinez, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)
Olivier Preis, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)
C. Gouvret, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)
J. Dejonghe, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)
J.-B. Daban, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)
A. Spang, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)
F. Martinache, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)
M. Beaulieu, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)
P. Janin-Potiron, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)
L. Abe, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)
Y. Fantei-Caujolle, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)
D. Mattei, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)
S. Ottogalli, Lab. Lagrange, Observatoire de la Côte d’Azur, CNRS, Univ. of Nice Sophia-Antipolis (France)


Published in SPIE Proceedings Vol. 9145:
Ground-based and Airborne Telescopes V
Larry M. Stepp; Roberto Gilmozzi; Helen J. Hall, Editor(s)

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