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6 October 2023 Harvesting lost photons in stellar coronagraphs
Lisa Altinier, Yann Gutierrez, Olivier Absil, Alexis Carlotti, Olivier Herscovici-Schiller, Lucie Leboulleux, Emiel H. Por, Pierre Baudoz, Alexis Bidot, Kimberly Bott, Bernhard Brandl, Sarah L. Casewell, Élodie Choquet, Nicolas B. Cowan, Niyati Desai, David Doelman, Jules Fowler, Timothy D. Gebhard, Sebastiaan Y. Haffert, Adrien Hours, Roser Juanola-Parramon, Matthew Kenworthy, Elina Kleisioti, Lorenzo König, Mariya Krasteva, Iva Laginja, Rico Landman, Johan Mazoyers, Maxwell A. Millar-Blanchaer, David Mouillet, Mamadou N'Diaye, Frans Snik, Dirk van Dam, Kyle Van Gorkom, Maaike van Kooten, Sophia R. Vaughan, Arthur Vigan
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Proceedings Volume 12680, Techniques and Instrumentation for Detection of Exoplanets XI; 126801T (2023) https://doi.org/10.1117/12.2677410
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States
Conference Poster
Abstract
To reduce the amount of stellar light for exoplanet detection, coronagraphs feature amplitude masks in pupils plane(s) and/or focal plane(s), where a large fraction of photons are stopped -- and generally not used. Here, we give an overview of where potentially useful stellar (and circumstellar) photons are lost. We review existing concepts that use these lost photons, and propose generic strategies to make use of them for various applications. We particularly focus on wavefront sensing applications, but also explore how these photons can be used for calibration measurements, or for additional scientific observations.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Lisa Altinier, Yann Gutierrez, Olivier Absil, Alexis Carlotti, Olivier Herscovici-Schiller, Lucie Leboulleux, Emiel H. Por, Pierre Baudoz, Alexis Bidot, Kimberly Bott, Bernhard Brandl, Sarah L. Casewell, Élodie Choquet, Nicolas B. Cowan, Niyati Desai, David Doelman, Jules Fowler, Timothy D. Gebhard, Sebastiaan Y. Haffert, Adrien Hours, Roser Juanola-Parramon, Matthew Kenworthy, Elina Kleisioti, Lorenzo König, Mariya Krasteva, Iva Laginja, Rico Landman, Johan Mazoyers, Maxwell A. Millar-Blanchaer, David Mouillet, Mamadou N'Diaye, Frans Snik, Dirk van Dam, Kyle Van Gorkom, Maaike van Kooten, Sophia R. Vaughan, and Arthur Vigan "Harvesting lost photons in stellar coronagraphs", Proc. SPIE 12680, Techniques and Instrumentation for Detection of Exoplanets XI, 126801T (6 October 2023); https://doi.org/10.1117/12.2677410
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KEYWORDS
Coronagraphy
Photons
Exoplanets
Stars
Calibration
Cameras
Large telescopes
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