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Proceedings Paper • Open Access

Innovative compact focal plane array for wide field vis and ir orbiting telescopes

Paper Abstract

The future generation of high angular resolution space telescopes will require breakthrough technologies to combine large diameters and large focal plane arrays with compactness and lightweight mirrors and structures. Considering the allocated volume medium-size launchers, short focal lengths are mandatory, implying complex optical relays to obtain diffraction limited images on large focal planes.

In this paper we present preliminary studies to obtain compact focal plane arrays (FPA) for earth observations on low earth orbits at high angular resolution. Based on the principle of image slicers, we present an optical concept to arrange a 1D FPA into a 2D FPA, allowing the use of 2D detector matrices. This solution is particularly attractive for IR imaging requiring a cryostat, which volume could be considerably reduced as well as the relay optics complexity.

Enabling the use of 2D matrices for such an application offers new possibilities. Recent developments on curved FPA allows optimization without concerns on the field curvature. This innovative approach also reduces the complexity of the telescope optical combination, specifically for fast telescopes. This paper will describe the concept and optical design of an F/5 - 1.5m telescope equipped with such a FPA, the performances and the impact on the system with a comparison with an equivalent 1.5m wide field Korsch telescope.

Paper Details

Date Published: 17 November 2017
PDF: 5 pages
Proc. SPIE 10563, International Conference on Space Optics — ICSO 2014, 105635V (17 November 2017); doi: 10.1117/12.2304138
Show Author Affiliations
Emmanuel Hugot, Aix-Marseille Univ. (France)
Sébastien Vives, Aix-Marseille Univ. (France)
Marc Ferrari, Aix-Marseille Univ. (France)
Yann Gaeremynck, Aix-Marseille Univ. (France)
CEA LETI (France)
Wilfried Jahn, Aix-Marseille Univ. (France)

Published in SPIE Proceedings Vol. 10563:
International Conference on Space Optics — ICSO 2014
Zoran Sodnik; Bruno Cugny; Nikos Karafolas, Editor(s)

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