Manufacturing a novel diffractive pupil for the astrometric detection of exoplanets

Connor J. Langford; David S. Doelman; Christopher H. Betters; Max Charles; Fred Crous; Louis C. Desdoigts; Tatsuya Hirai; Tomokazu Ishiguro; Clarissa Luk; Yuuki Nishie; Frans Snik; Peter G. Tuthill

doi:10.1117/12.3019202

26 August 2024 Manufacturing a novel diffractive pupil for the astrometric detection of exoplanets

Connor J. Langford, David S. Doelman, Christopher H. Betters, Max Charles, Fred Crous, Louis C. Desdoigts, Tatsuya Hirai, Tomokazu Ishiguro, Clarissa Luk, Yuuki Nishie, Frans Snik, Peter G. Tuthill

Author Affiliations +

Proceedings Volume 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI; 131001R (2024) https://doi.org/10.1117/12.3019202
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

The TOLIMAN space mission confronts the challenge of detecting Earth analogues in the immediate solar neighbourhood by using novel astrometric techniques. This bespoke, low-cost mission will employ a novel optical and signal encoding system, enabling high-precision measurements that typically require larger instruments. Targeting the Alpha Centauri system, TOLIMAN will utilise an innovative diffractive pupil to mitigate the limitations of a relatively modest satellite and payload infrastructure to make measurements at the extreme precisions required. In this work, we describe the design and manufacturing of the pupil, which employs liquid crystal technologies and substrates with low coefficients of thermal expansion, with the goal of making measurements resistant to inevitable optical distortions and aberrations.

Conference Presentation

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

Citation Download Citation

Connor J. Langford, David S. Doelman, Christopher H. Betters, Max Charles, Fred Crous, Louis C. Desdoigts, Tatsuya Hirai, Tomokazu Ishiguro, Clarissa Luk, Yuuki Nishie, Frans Snik, and Peter G. Tuthill "Manufacturing a novel diffractive pupil for the astrometric detection of exoplanets", Proc. SPIE 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI, 131001R (26 August 2024); https://doi.org/10.1117/12.3019202

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