[ { "id": "https://authors.library.caltech.edu/records/cbppr-r5e04", "eprint_id": 98608, "eprint_status": "archive", "datestamp": "2023-08-19 17:46:18", "lastmod": "2024-01-14 21:56:27", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Soummer-R", "name": { "family": "Soummer", "given": "R\u00e9mi" }, "orcid": "0000-0003-2753-2819" }, { "name": { "family": "Laginja", "given": "Iva" } }, { "name": { "family": "Will", "given": "Scott D." } }, { "name": { "family": "Juanola-Parramon", "given": "Roser" } }, { "name": { "family": "Petrone", "given": "Peter" } }, { "name": { "family": "Brady", "given": "Gregory R." } }, { "name": { "family": "Noss", "given": "James" } }, { "name": { "family": "Perrin", "given": "Marshall D." } }, { "name": { "family": "Fowler", "given": "Julia" } }, { "name": { "family": "Kurtz", "given": "Heather" } }, { "name": { "family": "St. Laurent", "given": "Kathryn" } }, { "id": "Fogarty-K", "name": { "family": "Fogarty", "given": "Kevin" }, "orcid": "0000-0002-2691-2476" }, { "name": { "family": "McChesney", "given": "Evelyn" } }, { "name": { "family": "Scott", "given": "Nathan" } }, { "name": { "family": "Brooks", "given": "Keira" } }, { "name": { "family": "Comeau", "given": "Thomas" } }, { "name": { "family": "Ferrari", "given": "Marc" } }, { "name": { "family": "Gontrum", "given": "Rob" } }, { "name": { "family": "Hagopian", "given": "John" } }, { "name": { "family": "Hugot", "given": "Emmanuel" } }, { "name": { "family": "Leboulleux", "given": "Lucie" } }, { "name": { "family": "Mazoyer", "given": "Johan" } }, { "name": { "family": "Mugnier", "given": "Laurent" } }, { "name": { "family": "N'Diaye", "given": "Mamadou" } }, { "name": { "family": "Pueyo", "given": "Laurent" } }, { "name": { "family": "Sauvage", "given": "Jean-Fran\u00e7ois" } }, { "name": { "family": "Shiri", "given": "Ron" } }, { "name": { "family": "Sivaramakrishnan", "given": "Anand" } }, { "name": { "family": "Valenzuela", "given": "Ana-Maria" } }, { "name": { "family": "Zimmerman", "given": "Neil T." } } ] }, "title": "High-contrast imager for complex aperture telescopes (HiCAT): 6. Two deformable mirror wavefront control (Conference Presentation)", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 2019 Society of Photo-Optical Instrumentation Engineers (SPIE).", "abstract": "The goal of the High-contrast imager for Complex Aperture Telescopes (HiCAT) testbed is to demonstrate coronagraphic starlight suppression solutions for future segmented aperture space telescopes such as the Large UV, Optical, IR telescope (LUVOIR) mission concept being studied by NASA. The testbed design has the flexibility to enable studies with increasing complexity for telescope aperture geometries starting with off-axis telescopes, then on-axis telescopes with central obstruction and support structures. The testbed implements the Apodized Pupil Lyot Coronagraph (APLC) optimized for the HiCAT aperture, which is similar to one of the possible geometries considered for LUVOIR. Wavefront can be controlled using continuous deformable mirrors, and wavefront sensing is performed using the imaging camera, or a dedicated phase retrieval camera, and also in a low-order wavefront sensing arm. We present a progress update of the testbed in particular results using two deformable mirror control to produce high-contrast dark zone, and preliminary results using the testbed's low order Zernike wavefront sensor.", "date": "2019-09-09", "date_type": "published", "publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 111171Y", "id_number": "CaltechAUTHORS:20190912-105111393", "isbn": "9781510629271", "book_title": "Techniques and Instrumentation for Detection of Exoplanets IX", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190912-105111393", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "contributors": { "items": [ { "id": "Shaklan-S-B", "name": { "family": "Shaklan", "given": "Stuart B." } } ] }, "doi": "10.1117/12.2530299", "resource_type": "book_section", "pub_year": "2019", "author_list": "Soummer, R\u00e9mi; Laginja, Iva; et el." }, { "id": "https://authors.library.caltech.edu/records/pzqqs-kf422", "eprint_id": 91552, "eprint_status": "archive", "datestamp": "2023-08-19 11:01:43", "lastmod": "2024-01-14 21:15:54", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Riggs-A-J-E", "name": { "family": "Riggs", "given": "A. J. Eldorado" }, "orcid": "0000-0002-0863-6228" }, { "id": "Ruane-G-J", "name": { "family": "Ruane", "given": "Garreth" }, "orcid": "0000-0003-4769-1665" }, { "id": "Fogarty-K", "name": { "family": "Fogarty", "given": "Kevin" }, "orcid": "0000-0002-2691-2476" }, { "id": "Pueyo-L", "name": { "family": "Pueyo", "given": "Laurent" }, "orcid": "0000-0003-3818-408X" }, { "id": "Balasubramanian-K", "name": { "family": "Balasubramanian", "given": "Kunjithapatham" } } ] }, "title": "Numerically optimized coronagraph designs for the Habitable Exoplanet Imaging Mission (HabEx) concept", "ispublished": "unpub", "full_text_status": "public", "keywords": "HabEx, coronagraph, exoplanet, wavefront control, optimization", "note": "\u00a9 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThe HabEx Concept design is pre-decisional information presented for planning and discussion purposes only. This work was performed at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.\n\n
Published - 106980V.pdf
", "abstract": "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.", "date": "2018-08-09", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 106980V", "id_number": "CaltechAUTHORS:20181207-083716154", "isbn": "9781510619494", "book_title": "Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181207-083716154", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech" } ] }, "contributors": { "items": [ { "id": "Lystrup-M", "name": { "family": "Lystrup", "given": "Makenzie" } }, { "id": "MacEwen-H-A", "name": { "family": "MacEwen", "given": "Howard A." } }, { "id": "Fazio-G-G", "name": { "family": "Fazio", "given": "Giovanni G." } }, { "id": "Batalha-N-M", "name": { "family": "Batalha", "given": "Natalie" } }, { "id": "Siegler-N", "name": { "family": "Siegler", "given": "Nicholas" } }, { "id": "Tong-Edward-C", "name": { "family": "Tong", "given": "edward C." } } ] }, "doi": "10.1117/12.2313843", "primary_object": { "basename": "106980V.pdf", "url": "https://authors.library.caltech.edu/records/pzqqs-kf422/files/106980V.pdf" }, "resource_type": "book_section", "pub_year": "2018", "author_list": "Riggs, A. J. Eldorado; Ruane, Garreth; et el." }, { "id": "https://authors.library.caltech.edu/records/96g2w-dj255", "eprint_id": 83928, "eprint_status": "archive", "datestamp": "2023-08-19 05:07:26", "lastmod": "2024-01-14 19:15:26", "type": "book_section", "metadata_visibility": "show", "creators": { "items": [ { "id": "Pueyo-L", "name": { "family": "Pueyo", "given": "L." }, "orcid": "0000-0003-3818-408X" }, { "id": "Zimmermann-N", "name": { "family": "Zimmermann", "given": "N." } }, { "id": "Bolcar-M", "name": { "family": "Bolcar", "given": "M." } }, { "id": "Groff-T-D", "name": { "family": "Groff", "given": "T." }, "orcid": "0000-0001-5978-3247" }, { "id": "Stark-C-C", "name": { "family": "Stark", "given": "C." } }, { "id": "Ruane-G-J", "name": { "family": "Ruane", "given": "G." }, "orcid": "0000-0003-4769-1665" }, { "id": "Jewell-J-B", "name": { "family": "Jewell", "given": "J." } }, { "id": "Soummer-R", "name": { "family": "Soummer", "given": "R." }, "orcid": "0000-0003-2753-2819" }, { "id": "St-Laurent-K", "name": { "family": "St. Laurent", "given": "K." } }, { "id": "Wang-Ji", "name": { "family": "Wang", "given": "J." }, "orcid": "0000-0002-4361-8885" }, { "id": "Redding-D-C", "name": { "family": "Redding", "given": "D." } }, { "id": "Mazoyer-J", "name": { "family": "Mazoyer", "given": "J." }, "orcid": "0000-0002-9133-3091" }, { "id": "Fogarty-K", "name": { "family": "Fogarty", "given": "K." }, "orcid": "0000-0002-2691-2476" }, { "id": "Juanola-Parramon-R", "name": { "family": "Juanola-Parramon", "given": "Roser" } }, { "id": "Domagal-Goldman-S-D", "name": { "family": "Domagal-Goldman", "given": "S." }, "orcid": "0000-0003-0354-9325" }, { "id": "Roberge-A", "name": { "family": "Roberge", "given": "A." } }, { "id": "Guyon-O", "name": { "family": "Guyon", "given": "O." }, "orcid": "0000-0002-1097-9908" }, { "id": "Mandell-A-M", "name": { "family": "Mandell", "given": "A." }, "orcid": "0000-0002-8119-3355" } ] }, "title": "The LUVOIR architecture \"A\" coronagraph instrument", "ispublished": "unpub", "full_text_status": "public", "keywords": "planetary systems - techniques: coronagraphy, wavefront control", "note": "\u00a9 2017 Society of Photo-Optical Instrumentation Engineers (SPIE). \n\nThis material is based upon work carried out under subcontracts No.1496556 and No. 1539872 with the Jet Propulsion Laboratory funded by NASA and administered by the California Institute of Technology.\n\nPublished - 103980F.pdf
", "abstract": "In preparation for the Astro 2020 Decadal Survey NASA has commissioned the study four flagship missions spanning to a wide range of observable wavelengths: the Origins Space Telescope (OST, formerly the Far-Infrared Surveyor), Lynx (formerly the X-ray Surveyor), the Large UV/Optical/Infrared Surveyor (LUVOIR) and the Habitable Exoplanet Imager (HabEx). One of the key scientific objectives of the latter two is the detection and characterization of the earth-like planets around nearby stars using the direct imaging technique (along with a broad range of investigations regarding the architecture of and atmospheric composition exoplanetary systems using this technique). As a consequence dedicated exoplanet instruments are being studied for these mission concepts. This paper discusses the design of the coronagraph instrument for the architecture \"A\" (15 meters aperture) of LUVOIR. The material presented in this paper is aimed at providing an overview of the LUVOIR coronagraph instrument. It is the result of four months of discussions with various community stakeholders (scientists and technologists) regarding the instrument's basic parameters followed by meticulous design work by the the GSFC Instrument Design Laboratory team. In the first section we review the main science drivers, presents the overall parameters of the instrument (general architecture and backend instrument) and delve into the details of the currently envisioned coronagraph masks along with a description of the wavefront control architecture. Throughout the manuscript we describe the trades we made during the design process. Because the vocation of this study is to provide a baseline design for the most ambitious earth-like finding instrument that could be possibly launched into the 2030's, we have designed an complex system privileged that meets the ambitious science goals out team was chartered by the LUVOIR STDT exoplanet Working Group. However in an effort to minimize technological risk we tried to maximize the number of technologies that will be matured by the WFIRST coronagraph instruments.", "date": "2017-09-13", "date_type": "published", "publisher": "Society of Photo-optical Instrumentation Engineers (SPIE)", "place_of_pub": "Bellingham, WA", "pagerange": "Art. No. 103980F", "id_number": "CaltechAUTHORS:20171214-145308990", "isbn": "9781510612532", "book_title": "UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VIII", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20171214-145308990", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "NASA/JPL/Caltech", "grant_number": "1496556" }, { "agency": "NASA/JPL/Caltech", "grant_number": "1539872" } ] }, "contributors": { "items": [ { "id": "MacEwen-H-A", "name": { "family": "MacEwen", "given": "Howard A." } }, { "id": "Breckinridge-J-B", "name": { "family": "Breckinridge", "given": "James B." } } ] }, "doi": "10.1117/12.2274654", "primary_object": { "basename": "103980F.pdf", "url": "https://authors.library.caltech.edu/records/96g2w-dj255/files/103980F.pdf" }, "resource_type": "book_section", "pub_year": "2017", "author_list": "Pueyo, L.; Zimmermann, N.; et el." } ]