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| Paper: |
Development of High-Contrast Imaging Technique for Exoplanets in Binary-Star Systems |
| Monograph: |
11, HWO25 Proceedings Part II: Mission Framework, Technology, and Broader Contributions |
| Page: |
191 |
| Authors: |
Kenta Yoneta, Naoshi Murakami, and Jun Nishikawa |
| DOI: |
10.26624/OGSM3662 |
| Abstract: |
Exoplanets in multiple-star systems are interesting observation targets in exoplanet science.
Because lights from multiple stars disturb the observation of exoplanet in these systems, the high-contrast imaging system must simultaneously suppress these stellar lights.
We have been developing high-contrast imaging techniques, especially for binary stars, utilizing a Comon-Path Visible Nulling Coronagraph (CP-VNC) as a coronagraph, a Spatial Light Modulator (SLM) as a wavefront control device and the Speckle Area Nulling (SAN) method as a wavefront sensing and control algorithm, respectively.
In the laboratory demonstration, a contrast of 2.2 × 10^-8 was achieved in a dark hole generated at a position equidistant from the binary star model. |
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