Share Email Print
cover

Proceedings Paper

Sensitivity analysis for high-contrast missions with segmented telescopes
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Segmented telescopes enable large-aperture space telescopes for the direct imaging and spectroscopy of habitable worlds. However, the increased complexity of their aperture geometry, due to their central obstruction, support structures, and segment gaps, makes high-contrast imaging very challenging. In this context, we present an analytical model that will enable to establish a comprehensive error budget to evaluate the constraints on the segments and the influence of the error terms on the final image and contrast. Indeed, the target contrast of 1010 to image Earth-like planets requires drastic conditions, both in term of segment alignment and telescope stability. Despite space telescopes evolving in a more friendly environment than ground-based telescopes, remaining vibrations and resonant modes on the segments can still deteriorate the contrast. In this communication, we develop and validate the analytical model, and compare its outputs to images issued from end-to-end simulations.

Paper Details

Date Published: 1 September 2017
PDF: 14 pages
Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 104000M (1 September 2017); doi: 10.1117/12.2274347
Show Author Affiliations
Lucie Leboulleux, Space Telescope Science Institute (United States)
Aix Marseille Univ., CNRS, LAM (France)
ONERA (France)
Jean-François Sauvage, Aix Marseille Univ., CNRS, LAM (France)
ONERA (France)
Laurent Pueyo, Space Telescope Science Institute (United States)
Thierry Fusco, Aix Marseille Univ., CNRS, LAM (France)
ONERA (France)
Rémi Soummer, Space Telescope Science Institute (United States)
Mamadou N'Diaye, Observatoire de la Côte d'Azur (France)
Kathryn St. Laurent, Space Telescope Science Institute (United States)


Published in SPIE Proceedings Vol. 10400:
Techniques and Instrumentation for Detection of Exoplanets VIII
Stuart Shaklan, Editor(s)

© SPIE. Terms of Use
Back to Top