Challenges in focal plane and telescope calibration for high-precision space astrometry

Fabien Malbet; Manon Lizzana; Fabrice Pancher; Sébastien Soler; Alain Léger; Thierry Lépine; Gary A. Mamon; Alessandro Sozzetti; Alberto Riva; Deborah Busonero; Lucas Labadie; Pierre-Olivier Lagage; Renaud Goullioud

doi:10.1117/12.3019233

23 August 2024 Challenges in focal plane and telescope calibration for high-precision space astrometry

Fabien Malbet, Manon Lizzana, Fabrice Pancher, Sébastien Soler, Alain Léger, Thierry Lépine, Gary A. Mamon, Alessandro Sozzetti, Alberto Riva, Deborah Busonero, Lucas Labadie, Pierre-Olivier Lagage, Renaud Goullioud

Author Affiliations +

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 130920B (2024) https://doi.org/10.1117/12.3019233
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

With sub-microarcsecond angular accuracy, the Theia telescope will be capable of revealing the architectures of nearby exoplanetary systems down to the mass of Earth. This research addresses the challenges inherent in space astrometry missions, focusing on focal plane calibration and telescope optical distortion. We propose to assess the future feasibility of large-format detectors (50 to 200 megapixels) in a controlled laboratory environment. The aim is to improve the architecture of the focal plane while ensuring that specifications are met. The use of field stars as metrological sources for calibrating the optical distortion of the field may help to constrain telescope stability. The paper concludes with an attempt to confirm in the laboratory the performance predicted by simulations. We will also address the possibility of using such techniques with a dedicated instrument for the Habitable World Observatory.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Fabien Malbet, Manon Lizzana, Fabrice Pancher, Sébastien Soler, Alain Léger, Thierry Lépine, Gary A. Mamon, Alessandro Sozzetti, Alberto Riva, Deborah Busonero, Lucas Labadie, Pierre-Olivier Lagage, and Renaud Goullioud "Challenges in focal plane and telescope calibration for high-precision space astrometry", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 130920B (23 August 2024); https://doi.org/10.1117/12.3019233

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