Flight masks of the Roman Space Telescope Coronagraph Instrument
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arXiv
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| Natura: | Preprint |
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2025
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| author | Riggs, A. J. Eldorado Bailey, Vanessa P. Moody, Dwight Balasubramanian, Kunjithapatham Basinger, Scott A. Belikov, Ruslan Bendek, Eduardo Debes, John Dube, Brandon D. Gersh-Range, Jessica Groff, Tyler D. Kasdin, N. Jeremy Mennesson, Bertrand Monacelli, Brian Moore, Douglas M. Ruane, Garreth Sandhu, Jagmit Shi, Fang Sidick, Erkin Siegler, Nicholas Sirbu, Dan Trauger, John Weisberg, Carey L. White, Victor E. Wilson, Daniel W. Wilson, Robert C. Yee, Karl Y. Zimmerman, Neil T. |
| author_facet | Riggs, A. J. Eldorado Bailey, Vanessa P. Moody, Dwight Balasubramanian, Kunjithapatham Basinger, Scott A. Belikov, Ruslan Bendek, Eduardo Debes, John Dube, Brandon D. Gersh-Range, Jessica Groff, Tyler D. Kasdin, N. Jeremy Mennesson, Bertrand Monacelli, Brian Moore, Douglas M. Ruane, Garreth Sandhu, Jagmit Shi, Fang Sidick, Erkin Siegler, Nicholas Sirbu, Dan Trauger, John Weisberg, Carey L. White, Victor E. Wilson, Daniel W. Wilson, Robert C. Yee, Karl Y. Zimmerman, Neil T. |
| contents | Over the past two decades, thousands of confirmed exoplanets have been detected. The next major challenge is to characterize these other worlds and their stellar systems. Much information on the composition and formation of exoplanets and circumstellar debris disks can only be achieved via direct imaging. Direct imaging is challenging because of the small angular separations (< 1 arcsec) and high star-to-planet flux ratios such as ~1e9 for a Jupiter analog or ~1e10 for an Earth analog in the visible. Atmospheric turbulence prohibits reaching such high flux ratios on the ground, so observations must be made above the Earth's atmosphere. The Nancy Grace Roman Space Telescope (Roman), planned to launch in late 2026, will be the first space-based observatory to demonstrate high-contrast imaging with active wavefront control using its Coronagraph Instrument. The instrument's main purpose is to mature the various technologies needed for a future flagship mission to image and characterize Earth-like exoplanets. These technologies include two high-actuator-count deformable mirrors, photon-counting detectors, two complementary wavefront sensing and control loops, and two different coronagraph types. In this paper, we describe the complete set of flight masks in the Roman Coronagraph Instrument, their intended combinations, and how they were laid out, fabricated, and measured. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_08063 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Flight masks of the Roman Space Telescope Coronagraph Instrument Riggs, A. J. Eldorado Bailey, Vanessa P. Moody, Dwight Balasubramanian, Kunjithapatham Basinger, Scott A. Belikov, Ruslan Bendek, Eduardo Debes, John Dube, Brandon D. Gersh-Range, Jessica Groff, Tyler D. Kasdin, N. Jeremy Mennesson, Bertrand Monacelli, Brian Moore, Douglas M. Ruane, Garreth Sandhu, Jagmit Shi, Fang Sidick, Erkin Siegler, Nicholas Sirbu, Dan Trauger, John Weisberg, Carey L. White, Victor E. Wilson, Daniel W. Wilson, Robert C. Yee, Karl Y. Zimmerman, Neil T. Instrumentation and Methods for Astrophysics Over the past two decades, thousands of confirmed exoplanets have been detected. The next major challenge is to characterize these other worlds and their stellar systems. Much information on the composition and formation of exoplanets and circumstellar debris disks can only be achieved via direct imaging. Direct imaging is challenging because of the small angular separations (< 1 arcsec) and high star-to-planet flux ratios such as ~1e9 for a Jupiter analog or ~1e10 for an Earth analog in the visible. Atmospheric turbulence prohibits reaching such high flux ratios on the ground, so observations must be made above the Earth's atmosphere. The Nancy Grace Roman Space Telescope (Roman), planned to launch in late 2026, will be the first space-based observatory to demonstrate high-contrast imaging with active wavefront control using its Coronagraph Instrument. The instrument's main purpose is to mature the various technologies needed for a future flagship mission to image and characterize Earth-like exoplanets. These technologies include two high-actuator-count deformable mirrors, photon-counting detectors, two complementary wavefront sensing and control loops, and two different coronagraph types. In this paper, we describe the complete set of flight masks in the Roman Coronagraph Instrument, their intended combinations, and how they were laid out, fabricated, and measured. |
| title | Flight masks of the Roman Space Telescope Coronagraph Instrument |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2508.08063 |