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- W4293344800 abstract "A majority of Sun-like stars have at least one stellar companion that can introduce additional noise into the field of view of any high-contrast imaging instrument, limiting the achievable contrast. These include high-quality target stars such as the A and B components of Alpha Centauri, our nearest stellar neighbor. Enabling direct imaging of binary stars has the potential to increase the scientific yield for coronagraphic instruments planned on NASA’s future space missions including the Roman Space Telescope and the next IR/O/UV flagship recommended by Astro2020. Multi-Star Wavefront Control (MSWC) is a wavefront-control technique that simultaneously removes the (mutually incoherent) stellar leakage from both stellar components, enabling direct imaging of planets in many binary star systems. We present the latest testbed and numerical results obtained towards MSWC experiments as part of the technology development effort to demonstrate compatibility with existing high-contrast imaging platforms for this technique. In particular, we present experimental and modeling results from the Occulting Mask Coronagraph (OMC) testbed at JPL demonstrating Super-Nyquist Wavefront Control. During this testing window, the MSWC mask design has been inserted into the testbed and SNWC-based control generated a dark zone between 79-83 λ/D around the 2nd diffraction order reaching 5.1e-8 contrast. The OMC is configured with a shaped pupil mask with the same design as the MSWC mask on the Roman Space Telescope’s coronagraph instrument with the goal of using validated models to demonstrated MSWC operation at contrast levels relevant to the Roman coronagraphic instrument." @default.
- W4293344800 created "2022-08-27" @default.
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- W4293344800 date "2022-08-27" @default.
- W4293344800 modified "2023-10-03" @default.
- W4293344800 title "Initial laboratory demonstration of multi-star wavefront control at the occulting mask coronagraph testbed" @default.
- W4293344800 doi "https://doi.org/10.1117/12.2630639" @default.
- W4293344800 hasPublicationYear "2022" @default.
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