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Proceedings Paper

Final laboratory integration and test of the Keck Interferometer nuller
Author(s): S. L. Crawford; M. M. Colavita; J. I. Garcia; E. R. Ligon; B. Mennesson; C. G. Paine; E. Serabyn; R. F. Smythe; M. R. Swain; G. Vasisht
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Paper Abstract

Mid-infrared (8-13μm) nulling is a key observing mode planned for the NASA-funded Keck Interferometer at the Keck Observatory on the summit of Mauna Kea in Hawaii. By destructively interfering and thereby canceling the on-axis light from nearby stars, this observing mode will enable the characterization of the faint emission from exo-zodiacal dust surrounding these stellar systems. We report here the null leakage error budget and pre-ship results obtained in the laboratory after integration of the nulling beam combiner with its mid-infrared camera and key components of the Keck Interferometer. The mid-infrared nuller utilizes a dual-polarization, modified Mach-Zehnder (MMZ) beam combiner in conjunction with an atmospheric dispersion corrector to achieve broadband achromatic nulling.

Paper Details

Date Published: 14 September 2005
PDF: 8 pages
Proc. SPIE 5905, Techniques and Instrumentation for Detection of Exoplanets II, 59050U (14 September 2005); doi: 10.1117/12.619131
Show Author Affiliations
S. L. Crawford, Jet Propulsion Lab. (United States)
M. M. Colavita, Jet Propulsion Lab. (United States)
J. I. Garcia, Jet Propulsion Lab. (United States)
E. R. Ligon, Jet Propulsion Lab. (United States)
B. Mennesson, Jet Propulsion Lab. (United States)
C. G. Paine, Jet Propulsion Lab. (United States)
E. Serabyn, Jet Propulsion Lab. (United States)
R. F. Smythe, Jet Propulsion Lab. (United States)
M. R. Swain, Jet Propulsion Lab. (United States)
G. Vasisht, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 5905:
Techniques and Instrumentation for Detection of Exoplanets II
Daniel R. Coulter, Editor(s)

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