L
Lewis C. Roberts
Researcher at California Institute of Technology
Publications - 91
Citations - 2712
Lewis C. Roberts is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Stars & Adaptive optics. The author has an hindex of 30, co-authored 89 publications receiving 2612 citations. Previous affiliations of Lewis C. Roberts include Georgia State University & The Mount.
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Journal ArticleDOI
A New High Contrast Imaging Program at Palomar Observatory
Sasha Hinkley,Ben R. Oppenheimer,Neil Zimmerman,Douglas Brenner,Ian Parry,Justin R. Crepp,Gautam Vasisht,E. R. Ligon,David A. King,Rémi Soummer,Anand Sivaramakrishnan,Charles Beichman,Michael Shao,Lewis C. Roberts,Antonin Bouchez,Richard Dekany,Laurent Pueyo,Jennifer E. Roberts,Thomas Lockhart,Chengxing Zhai,Chris Shelton,Rick Burruss +21 more
TL;DR: In this paper, a microlens-based integral field spectrograph integrated with a diffraction-limited, partially apodized-pupil Lyot coronagraph is presented.
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Temporal Evolution of Coronagraphic Dynamic Range and Constraints on Companions to Vega
Sasha Hinkley,Ben R. Oppenheimer,Rémi Soummer,Anand Sivaramakrishnan,Anand Sivaramakrishnan,Lewis C. Roberts,Jeff Kuhn,Russell B. Makidon,Marshall D. Perrin,James P. Lloyd,Kaitlin M. Kratter,Kaitlin M. Kratter,Douglas Brenner +12 more
TL;DR: In this paper, a series of 284 8 s, AO-corrected, coronagraphically occulted H-band images of the star Vega at the 3.63 m AEOS telescope was obtained for studying the temporal behavior of speckle noise and represents the first time such a study on highly corrected coronagraphic AO images has been carried out in a quantitative way.
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The recent expansion of Pluto's atmosphere
James L. Elliot,James L. Elliot,A. Ates,Bryce A. Babcock,A. S. Bosh,A. S. Bosh,Marc W. Buie,Kelly B. Clancy,Edward W. Dunham,Stephen S. Eikenberry,D. T. Hall,S. D. Kern,S. K. Leggett,Stephen E. Levine,Dae-Sik Moon,Catherine B. Olkin,David J. Osip,Jay M. Pasachoff,Bryan E. Penprase,S. Qu,John Rayner,Lewis C. Roberts,Colette Salyk,S. P. Souza,R. C. Stone,Brian W. Taylor,David J. Tholen,J. E. Thomas-Osip,J. E. Thomas-Osip,D. R. Ticehurst,Lawrence H. Wasserman +30 more
TL;DR: Observations at a variety of visible and infrared wavelengths of an occultation of a star by Pluto in August 2002 reveal evidence for extinction in Pluto's atmosphere and show that it has indeed changed, having expanded rather than collapsed, since 1988.
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The Solar-System-Scale Disk around AB Aurigae
Ben R. Oppenheimer,Douglas Brenner,Sasha Hinkley,Neil Zimmerman,Anand Sivaramakrishnan,Rémi Soummer,J. R. Kuhn,James R. Graham,Marshall D. Perrin,James P. Lloyd,Lewis C. Roberts,David M. Harrington +11 more
TL;DR: In this paper, the authors used adaptive optics coronagraphy and polarimetry to image the dust in an annulus between 43 and 302 AU from the star, a region never seen before.
Journal ArticleDOI
Iccd speckle observations of binary stars. xxiii. measurements during 1982¨1997 from six telescopes, with 14 new orbits
William I. Hartkopf,Brian D. Mason,Harold A. McAlister,Lewis C. Roberts,Lewis C. Roberts,Lewis C. Roberts,Nils H. Turner,T. ten Brummelaar,T. ten Brummelaar,C. Prieto,C. Prieto,Josefina Ling,Josefina Ling,Otto G. Franz +13 more
TL;DR: In this paper, the authors presented 2017 observations of 1286 binary stars, observed by means of speckle interferometry using six telescopes over a 15-year period from 1982 April to 1997 June.