Guyon, Olivier and Norris, Barnaby and Martinod, Marc-Antoine and Ahn, Kyohoon and Tuthill, Peter and Males, Jared R. and Wong, Alison and Skaf, Nour and Currie, Thayne and Miller, Kelsey and Bos, Steven and Lozi, Julien and Deo, Vincent and Vievard, Sébastien and Belikov, Ruslan and Van Gorkom, Kyle and Haffert, Sebastiaan Y. and Mazin, Ben and Bottom, Michael and Frazin, Richard and Rodack, Alexander and Groff, Tyler D. and Jovanovic, Nemanja and Martinache, Frantz (2021) High contrast imaging at the photon noise limit with self-calibrating WFS/C systems. In: Techniques and Instrumentation for Detection of Exoplanets X. Proceedings of SPIE. No.11823. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 1182318. ISBN 9781510644847. https://resolver.caltech.edu/CaltechAUTHORS:20220621-860583400
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Abstract
High contrast imaging (HCI) systems rely on active wavefront control (WFC) to deliver deep raw contrast in the focal plane, and on calibration techniques to further enhance contrast by identifying planet light within the residual speckle halo. Both functions can be combined in an HCI system and we discuss a path toward designing HCI systems capable of calibrating residual starlight at the fundamental contrast limit imposed by photon noise. We highlight the value of deploying multiple high-efficiency wavefront sensors (WFSs) covering a wide spectral range and spanning multiple optical locations. We show how their combined information can be leveraged to simultaneously improve WFS sensitivity and residual starlight calibration, ideally making it impossible for an image plane speckle to hide from WFS telemetry. We demonstrate residual starlight calibration in the laboratory and on-sky, using both a coronagraphic setup, and a nulling spectro-interferometer. In both case, we show that bright starlight can calibrate residual starlight.
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| Additional Information: | © 2021 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was supported by NASA grants #80NSSC19K0336 and #80NSSC19K0121. This work is based on data collected at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Maunakea has always had within the Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. The authors also wish to acknowledge the critical importance of the current and recent Subaru Observatory daycrew, technicians, telescope operators, computer support, and office staff employees. Their expertise, ingenuity, and dedication is indispensable to the continued successful operation of these observatories. The development of SCExAO was supported by the Japan Society for the Promotion of Science (Grant-in-Aid for Research #23340051, #26220704, #23103002, #19H00703 & #19H00695), the Astrobiology Center of the National Institutes of Natural Sciences, Japan, the Mt Cuba Foundation and the director’s contingency fund at Subaru Telescope. KA acknowledges support from the Heising-Simons foundation. | ||||||||||||||||||||||||||||||||||
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| Subject Keywords: | Adaptive Optics, Coronagraphy, High Contrast Imaging, Wavefront Sensing, Exoplanet imaging, Telescopes | ||||||||||||||||||||||||||||||||||
| Series Name: | Proceedings of SPIE | ||||||||||||||||||||||||||||||||||
| Issue or Number: | 11823 | ||||||||||||||||||||||||||||||||||
| DOI: | 10.1117/12.2594885 | ||||||||||||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20220621-860583400 | ||||||||||||||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20220621-860583400 | ||||||||||||||||||||||||||||||||||
| Official Citation: | Olivier Guyon, Barnaby Norris, Marc-Antoine Martinod, Kyohoon Ahn, Peter Tuthill, Jared Males, Alison Wong, Nour Skaf, Thayne Currie, Kelsey Miller, Steven Bos, Julien Lozi, Vincent Deo, Sebastien Vievard, Ruslan Belikov, Kyle van Gorkom, Sebastiaan Haffert, Benjamin Mazin, Michael Bottom, Richard Frazin, Alexander Rodack, Tyler Groff, Nemanja Jovanovic, and Frantz Martinache "High contrast imaging at the photon noise limit with self-calibrating WFS/C systems", Proc. SPIE 11823, Techniques and Instrumentation for Detection of Exoplanets X, 1182318 (1 September 2021); https://doi.org/10.1117/12.2594885 | ||||||||||||||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||||||||||||||
| ID Code: | 115213 | ||||||||||||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||||||||||||
| Deposited By: | Tony Diaz | ||||||||||||||||||||||||||||||||||
| Deposited On: | 21 Jun 2022 22:28 | ||||||||||||||||||||||||||||||||||
| Last Modified: | 21 Jun 2022 22:28 |
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