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Proceedings Paper

Recent progress at the Keck Interferometer: operations and V2 science
Author(s): S. Ragland; P. Wizinowich; R. Akeson; M. Colavita; E. Appleby; B. Berkey; A. Booth; A. Cooper; S. Crawford; W. Dahl; C. Felizardo; J. Garcia-Gathright; J. Herstein; M. Hrynevych; C. Koresko; R. Ligon; D. Medeiros; B. Mennesson; R. Millan-Gabet; D. Morrison; C. Paine; B. Parvin; T. Panteleeva; E. Serabyn; B. Smith; K. Summers; K. Tsubota; C. Tyau; E. Wetherell; J. Woillez
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Paper Abstract

The Keck Interferometer combines the two 10m diameter Keck telescopes for near-infrared fringe visibility, and mid-infrared nulling observations. We report on recent progress with an emphasis on new visibility observing capabilities, operations improvements for visibility and nulling, and on recent visibility science. New visibility observing capabilities include a grism spectrometer for higher spectral resolution. Recent improvements include a new AO output dichroic for increased infrared light throughput, and the installation of new wave-front controllers on both Keck telescopes. We also report on recent visibility results in several areas including (1) young stars and their circumstellar disks, (2) pre-main sequence star masses, and (3) Circumstellar environment of evolved stars. Details on nuller instrument and nuller science results, and the ASTRA phase referencing and astrometry upgrade, are presented in more detail elsewhere in this conference.

Paper Details

Date Published: 28 July 2008
PDF: 12 pages
Proc. SPIE 7013, Optical and Infrared Interferometry, 70130B (28 July 2008); doi: 10.1117/12.788070
Show Author Affiliations
S. Ragland, W. M. Keck Observatory (United States)
P. Wizinowich, W. M. Keck Observatory (United States)
R. Akeson, California Institute of Technology (United States)
M. Colavita, Jet Propulsion Lab. (United States)
E. Appleby, W. M. Keck Observatory (United States)
B. Berkey, W. M. Keck Observatory (United States)
A. Booth, Jet Propulsion Lab. (United States)
A. Cooper, W. M. Keck Observatory (United States)
S. Crawford, Jet Propulsion Lab. (United States)
W. Dahl, W. M. Keck Observatory (United States)
C. Felizardo, California Institute of Technology (United States)
J. Garcia-Gathright, Jet Propulsion Lab. (United States)
J. Herstein, California Institute of Technology (United States)
M. Hrynevych, W. M. Keck Observatory (United States)
C. Koresko, California Institute of Technology (United States)
R. Ligon, Jet Propulsion Lab. (United States)
D. Medeiros, W. M. Keck Observatory (United States)
B. Mennesson, Jet Propulsion Lab. (United States)
R. Millan-Gabet, California Institute of Technology (United States)
D. Morrison, W. M. Keck Observatory (United States)
C. Paine, Jet Propulsion Lab. (United States)
B. Parvin, Jet Propulsion Lab. (United States)
T. Panteleeva, W. M. Keck Observatory (United States)
E. Serabyn, Jet Propulsion Lab. (United States)
B. Smith, W. M. Keck Observatory (United States)
K. Summers, W. M. Keck Observatory (United States)
K. Tsubota, W. M. Keck Observatory (United States)
C. Tyau, W. M. Keck Observatory (United States)
E. Wetherell, W. M. Keck Observatory (United States)
J. Woillez, W. M. Keck Observatory (United States)


Published in SPIE Proceedings Vol. 7013:
Optical and Infrared Interferometry
Markus Schöller; William C. Danchi; Françoise Delplancke, Editor(s)

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