Numerically optimized coronagraph designs for the Habitable Exoplanet Imaging Mission (HabEx) concept
| Autor: | Kunjithapatham Balasubramanian, Kevin Fogarty, Laurent Pueyo, A. J. Eldorado Riggs, Garreth Ruane |
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| Přispěvatelé: | Lystrup, Makenzie, MacEwen, Howard A., Fazio, Giovanni G., Batalha, Natalie, Siegler, Nicholas, Tong, edward C. |
| Rok vydání: | 2018 |
| Předmět: |
Computer science
Aperture business.industry Zernike polynomials Astrophysics::Instrumentation and Methods for Astrophysics 01 natural sciences Exoplanet Deformable mirror law.invention 010309 optics Telescope Primary mirror symbols.namesake law 0103 physical sciences symbols Astrophysics::Earth and Planetary Astrophysics Polar coordinate system Aerospace engineering business 010303 astronomy & astrophysics Coronagraph |
| Zdroj: | Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave. |
| Popis: | The primary science goal of the Habitable Exoplanet Imaging Mission (HabEx), one of four candidate flagship missions under investigation, is to image and spectrally characterize Earth-like exoplanets. It is well known that pupil obscurations degrade coronagraphic performance and complicate coronagraph design, so HabEx is planned to have an off-axis, unobscured primary mirror. We utilize the circular symmetry of the aperture to investigate 1D-radial coronagraph optimization methods that are prohibitively time-consuming or intractable in 2D, such as diffractive pupil remapping and concurrent, multi-plane optimization. We also directly constrain sensitivities to dynamic, low-order Zernike aberrations, which are separable in polar coordinates and can thus be propagated as 1D-radial integrals. The mask technologies in our designs claim heritage from the extensive modeling and testbed experiments performed by the Wide-Field Infrared Survey Telescope (WFIRST) Coronagraph Instrument (CGI) project. In this paper, we detail our optimization methods and outline future work to complete our design survey. |
| Databáze: | OpenAIRE |
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