[ { "id": "authors:ypndq-hx229", "collection": "authors", "collection_id": "ypndq-hx229", "cite_using_url": "https://authors.library.caltech.edu/records/ypndq-hx229", "type": "conference_item", "title": "Liger at W.M. Keck Observatory: overall design and science drivers", "book_title": "Ground-based and Airborne Instrumentation for Astronomy X", "author": [ { "family_name": "Wright", "given_name": "Shelley A.", "orcid": "0000-0003-1034-8054" }, { "family_name": "Jones", "given_name": "Tucker", "orcid": "0000-0001-5860-3419" }, { "family_name": "Larkin", "given_name": "James E.", "orcid": "0000-0001-5569-9523" }, { "family_name": "Kupke", "given_name": "Renate", "orcid": "0000-0002-5826-5314" }, { "family_name": "Kassis", "given_name": "Marc F.", "orcid": "0000-0001-8414-8771" }, { "family_name": "Brown", "given_name": "Aaron" }, { "family_name": "Andersen", "given_name": "David", "orcid": "0009-0006-8064-8481" }, { "family_name": "Armus", "given_name": "Lee", "orcid": "0000-0003-3498-2973", "clpid": "Armus-L" }, { "family_name": "Cale", "given_name": "Bryson" }, { "family_name": "Cosens", "given_name": "Maren", "orcid": "0000-0002-2248-6107" }, { "family_name": "Chu", "given_name": "Devin" }, { "family_name": "Do", "given_name": "Tuan" }, { "family_name": "Fassnacht", "given_name": "Chris" }, { "family_name": "Fisher", "given_name": "Deanne" }, { "family_name": "Fitzgerald", "given_name": "Michael P.", "orcid": "0000-0002-0176-8973" }, { "family_name": "Ghez", "given_name": "Andrea", "orcid": "0000-0003-3230-5055", "clpid": "Ghez-A-M" }, { "family_name": "Greene", "given_name": "Jenny" }, { "family_name": "Hayashi", "given_name": "Takeru" }, { "family_name": "Hees", "given_name": "Aurelien" }, { "family_name": "Hirtenstein", "given_name": "Jessie", "orcid": "0000-0002-5368-8262" }, { "family_name": "Johnson", "given_name": "Chris" }, { "family_name": "Keane", "given_name": "Jacqueline" }, { "family_name": "Kelly", "given_name": "Patrick" }, { "family_name": "Kirby", "given_name": "Evan" }, { "family_name": "Karalidi", "given_name": "Theodara" }, { "family_name": "Konopacky", "given_name": "Quinn", "orcid": "0000-0002-9936-6285" }, { "family_name": "Kress", "given_name": "Evan" }, { "family_name": "Lu", "given_name": "Jessica", "orcid": "0000-0001-9611-0009" }, { "family_name": "Lyke", "given_name": "Jim" }, { "family_name": "Magnone", "given_name": "Kenneth" }, { "family_name": "Maire", "given_name": "J\u00e9r\u00f4me" }, { "family_name": "McGurk", "given_name": "Rosalie", "orcid": "0000-0003-2064-4105" }, { "family_name": "Medling", "given_name": "Anne", "orcid": "0000-0001-7421-2944" }, { "family_name": "Millar-Blanchaer", "given_name": "Max", "orcid": "0000-0001-6205-9233", "clpid": "Millar-Blanchaer-M-A" }, { "family_name": "Minor", "given_name": "Quinn", "orcid": "0000-0002-4270-6453" }, { "family_name": "Nash", "given_name": "Reston", "clpid": "Nash-Reston" }, { "family_name": "Nierenberg", "given_name": "Anna" }, { "family_name": "Reddy", "given_name": "Naveen" }, { "family_name": "Rich", "given_name": "Michael" }, { "family_name": "Ruffio", "given_name": "Jean-Baptiste", "orcid": "0000-0003-2233-4821", "clpid": "Ruffio-J-B" }, { "family_name": "Rundquist", "given_name": "Nils-Erik" }, { "family_name": "Sabhlok", "given_name": "Sanchit", "orcid": "0000-0002-8780-8226" }, { "family_name": "Sand", "given_name": "David" }, { "family_name": "Sanders", "given_name": "Ryan" }, { "family_name": "Sandstrom", "given_name": "Karin", "orcid": "0000-0002-4378-8534" }, { "family_name": "Shapley", "given_name": "Alice" }, { "family_name": "Sohn", "given_name": "Ji-Man" }, { "family_name": "Surya", "given_name": "Arun", "orcid": "0000-0002-9967-0391" }, { "family_name": "Treu", "given_name": "Tommaso" }, { "family_name": "Wang", "given_name": "Eric" }, { "family_name": "Warad", "given_name": "Kanaka" }, { "family_name": "Weber", "given_name": "Robert", "clpid": "Weber-Robert" }, { "family_name": "Wiley", "given_name": "James" }, { "family_name": "Wizinowich", "given_name": "Peter", "orcid": "0000-0002-1646-442X" }, { "family_name": "Wong", "given_name": "Michael", "orcid": "0000-0003-2804-5086" }, { "family_name": "Yeh", "given_name": "Sherry", "orcid": "0000-0002-4037-3114" } ], "editor": [ { "family_name": "Vernet", "given_name": "Jo\u00ebl R." }, { "family_name": "Bryant", "given_name": "Julia J." }, { "family_name": "Motohara", "given_name": "Kentaro" } ], "abstract": "

Liger is a next-generation near-infrared (0.81 - 2.45 m) integral field spectrograph (IFS) and imaging camera for the W. M. Keck Observatory (WMKO) adaptive optics (AO) system. The instrument concept originated by coupling designs from WMKO AO instruments and the future Thirty Meter Telescope IRIS spectrograph. Liger is designed for the Keck I telescope to operate behind the upcoming Keck All-sky Precision Adaptive optics (KAPA) system. The imaging camera sequentially feeds an IFS that makes use of slicer assembly for the coarsest sampling (75 mas and 150 mas per spaxel) and lenslet array (14 mas and 31 mas per spaxel) for diffraction-limited sampling. The imaging camera makes use of off-axis parabolas and a Hawaii-2RG detector to achieve a 14 mas/pixel plate scale and 20.5\"20.5\" field of view. The IFS offers a range of spectral resolving power of R=4,000 { 10,000 and yields large fields of view for an AO-fed IFS. Liger will enable new science by providing enhanced capabilities, including higher spectral resolving power, access to shorter wavelengths, and larger fields of view than any current or planned ground- or space-based IFS system. Liger will be able to unlock previously inaccessible science across a wide range of the cosmos, such as dark matter substructure, supermassive black holes, the Galactic Center, exoplanet atmospheres, and the time-variable Solar System. We present the overall design of the Liger subsystems and review unique science drivers.

", "doi": "10.1117/12.3020803", "isbn": "9781510675155", "publisher": "Society of Photo-Optical Instrumentation Engineers", "place_of_publication": "Bellingham, WA", "publication_date": "2024-07-31", "pages": "16" }, { "id": "authors:dxn9n-aes80", "collection": "authors", "collection_id": "dxn9n-aes80", "cite_using_url": "https://authors.library.caltech.edu/records/dxn9n-aes80", "type": "conference_item", "title": "SwRI's ISpec instrument for the ISCEA observatory: design", "book_title": "Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave", "author": [ { "family_name": "Veach", "given_name": "Todd J.", "orcid": "0000-0003-2347-6725" }, { "family_name": "Polizotti", "given_name": "John" }, { "family_name": "Davis", "given_name": "Michael W.", "orcid": "0000-0003-4338-1635" }, { "family_name": "Rose", "given_name": "Randy" }, { "family_name": "Rose", "given_name": "Thomas J." }, { "family_name": "Phillips", "given_name": "Mark" }, { "family_name": "Brody", "given_name": "Tonya" }, { "family_name": "Keuchkerian", "given_name": "Martin" }, { "family_name": "Wang", "given_name": "Yun", "orcid": "0000-0002-4749-2984", "clpid": "Wang-Yun" }, { "family_name": "Armus", "given_name": "Lee", "orcid": "0000-0003-3498-2973", "clpid": "Armus-L" }, { "family_name": "Faisst", "given_name": "Andreas", "orcid": "0000-0002-9382-9832", "clpid": "Faisst-Andreas-L" }, { "family_name": "Robberto", "given_name": "Massimo", "orcid": "0000-0002-9573-3199" } ], "editor": [ { "family_name": "Coyle", "given_name": "Laura E." }, { "family_name": "Perrin", "given_name": "Marshall D." }, { "family_name": "Matsuura", "given_name": "Shuji" } ], "abstract": "

The ISCEA observatory is a small satellite with a mass of under 150kg. SwRI’s ISCEA near-infrared (NIR) spectrograph instrument (ISpec) with parallel imaging and multi-object spectroscopy channels is designed to meet the ISCEA observatory science goal: to determine the history of star formation and its quenching in galaxies as a function of local density and stellar mass when the Universe was 3-5 Gyrs old (1.2<z<2.1). To achieve this, the ISpec instrument requirements are wavelength range 1.1 to 2-micron; a spectral resolving power of < 1000; <300 simultaneous object spectral acquisition; 2.8”× 2.8” “slit” size; emission line flux limit (5-sigma) of 3×10-17 erg/s/cm2; field of view of <= 0.27 deg2; and throughput <= 0.2.

", "doi": "10.1117/12.2629382", "isbn": "9781510653412", "publisher": "SPIE", "place_of_publication": "Bellingham, WA", "publication_date": "2022-08-27", "pages": "121804U" }, { "id": "authors:2haqv-xjb13", "collection": "authors", "collection_id": "2haqv-xjb13", "cite_using_url": "https://authors.library.caltech.edu/records/2haqv-xjb13", "type": "conference_item", "title": "The Roman Space Telescope coronagraph technology demonstration: current status and relevance to future missions", "book_title": "Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave", "author": [ { "family_name": "Mennesson", "given_name": "Bertrand", "orcid": "0000-0003-4205-4800" }, { "family_name": "Bailey", "given_name": "Vanessa P.", "orcid": "0000-0002-5407-2806" }, { "family_name": "Zellem", "given_name": "Robert", "orcid": "0000-0001-7547-0398" }, { "family_name": "Hildebrandt", "given_name": "Sergi R.", "orcid": "0000-0003-0220-0009" }, { "family_name": "Ygouf", "given_name": "Marie", "orcid": "0000-0001-7591-2731", "clpid": "Ygouf-M" }, { "family_name": "Rhodes", "given_name": "Jason", "orcid": "0000-0002-4485-8549", "clpid": "Rhodes-J" }, { "family_name": "Zimmerman", "given_name": "Neil T.", "orcid": "0000-0001-5484-1516" }, { "family_name": "Nemati", "given_name": "Bijan", "orcid": "0000-0001-7031-5567" }, { "family_name": "Gonzalez", "given_name": "Guillermo" }, { "family_name": "Cady", "given_name": "Eric", "orcid": "0000-0002-8789-2931" }, { "family_name": "Kern", "given_name": "Brian D." }, { "family_name": "Koch", "given_name": "Timothy" }, { "family_name": "Krist", "given_name": "John" }, { "family_name": "Heydorff", "given_name": "Kathryn" }, { "family_name": "Luchik", "given_name": "Thomas" }, { "family_name": "Mok", "given_name": "Fai" }, { "family_name": "Morrissey", "given_name": "Patrick", "orcid": "0000-0001-8177-1023" }, { "family_name": "Poberezhskiy", "given_name": "Ilya" }, { "family_name": "Riggs", "given_name": "A. J. Eldorado", "orcid": "0000-0002-0863-6228" }, { "family_name": "Shi", "given_name": "Fang" }, { "family_name": "Zhao", "given_name": "Feng" }, { "family_name": "Akeson", "given_name": "Rachel", "orcid": "0000-0001-9674-1564", "clpid": "Akeson-Rachel" }, { "family_name": "Armus", "given_name": "Lee", "orcid": "0000-0003-3498-2973", "clpid": "Armus-L" }, { "family_name": "Greenbaum", "given_name": "Alexandra", "orcid": "0000-0002-7162-8036", "clpid": "Greenbaum-Alexandra" }, { "family_name": "Ingalls", "given_name": "James", "orcid": "0000-0003-4714-1364", "clpid": "Ingalls-James" }, { "family_name": "Lowrance", "given_name": "Patrick", "orcid": "0000-0001-8014-0270", "clpid": "Lowrance-P-J" } ], "editor": [ { "family_name": "Coyle", "given_name": "Laura E." }, { "family_name": "Perrin", "given_name": "Marshall D." }, { "family_name": "Matsuura", "given_name": "Shuji" } ], "abstract": "
\n
The Nancy Grace Roman Space Telescope (formerly WFIRST) will be launched in the mid-2020s with an onboard Coronagraph Instrument which will serve as a technology demonstrator for exoplanet direct imaging. The Roman Coronagraph will be capable of detecting and characterizing exoplanets and circumstellar disks in visible light at an unprecedented contrast level of ~10-8 or better at small separations. Such a contrast level, which is 2 to 3 orders of magnitude better than state-of-the-art visible or near-infrared coronagraphs, raises entirely new challenges that will be overcome using a combination of hardware, calibration and data processing. In particular, the Roman Coronagraph will be the first space-based coronagraphic instrument with active low- and high-order wavefront control through the use of largeformat (48x48) deformable mirrors, and its electron-multiplying Charge Coupled Device (EMCCD) detector will enable faint signal detection in photon-counting mode. The Roman Coronagraph successfully passed its critical design review in April 2021 and its system integration review in June 2022. It is now well on its path to demonstrate many core technologies at the levels required for a future exo-Earth direct imaging mission.
\n
", "doi": "10.1117/12.2629176", "isbn": "9781510653412", "publisher": "SPIE", "place_of_publication": "Bellingham, WA", "publication_date": "2022-08-27", "pages": "121801W" } ]