@inproceedings{20bb933fcf5f4137bbb1c46da6142d15,
title = "High contrast imaging at the photon noise limit with self-calibrating WFS/C systems",
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.",
author = "Olivier Guyon and Barnaby Norris and Martinod, {Marc Antoine} and Kyohoon Ahn and Peter Tuthill and Jared Males and Alison Wong and Nour Skaf and Thayne Currie and Kelsey Miller and Steven Bos and Julien Lozi and Vincent Deo and Sebastien Vievard and Ruslan Belikov and {Van Gorkom}, Kyle and Sebastiaan Haffert and Benjamin Mazin and Michael Bottom and Richard Frazin and Alexander Rodack and Tyler Groff and Nemanja Jovanovic and Frantz Martinache",
note = "Funding Information: 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{\textquoteright}s contingency fund at Subaru Telescope. KA acknowledges support from the Heising-Simons foundation. Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; Techniques and Instrumentation for Detection of Exoplanets X 2021 ; Conference date: 01-08-2021 Through 05-08-2021",
year = "2021",
doi = "10.1117/12.2594885",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Shaklan, {Stuart B.} and Ruane, {Garreth J.}",
booktitle = "Techniques and Instrumentation for Detection of Exoplanets X",
}