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Proceedings Paper

Aperture synthesis imaging with the Keck Interferometer
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Paper Abstract

JPL and CARA are building a multi-element, IR interferometer for NASA to be situated at the twin Keck Observatories on Mauna Kea, Hawaii. Initially, the 10-m diameter Keck telescopes will be augmented with four fixed-location 2-m class outrigger telescopes resulting in 15 non-redundant baselines, the longest being approximately equals 110 m or nearly 5 X 107 ((lambda) /2.2micrometers )-1 wavelengths. Fast adaptive optics and tip-tilt corrections will be used to phase up the Keck and outrigger apertures, respectively. The entire array will be co-phased by observing a relatively bright target on the photon rich Keck-Keck (K-K) and Keck- outrigger (K-O) baselines. When fully phased, the projected fringe phaser sensitivity for unresolved targets will be K- 22.0, 20.0 and 17.9 on the K-K, K-O and O-O baselines, respectively. Synthetic imaging capability will be available in the 1.6-10.0 micrometers atmospheric transmission bands at angular resolutions of 4.0 milli-arcseconds. In this article, we briefly outline the adopted methodology, imaging hardware, projected sensitivities and summarize the scientific potential of the instrument as an imaging interferometer.

Paper Details

Date Published: 24 July 1998
PDF: 8 pages
Proc. SPIE 3350, Astronomical Interferometry, (24 July 1998); doi: 10.1117/12.317097
Show Author Affiliations
Gautam Vasisht, Jet Propulsion Lab. (United States)
Andrew F. Boden, Jet Propulsion Lab. (United States)
M. Mark Colavita, Jet Propulsion Lab. (United States)
Samuel L. Crawford, Jet Propulsion Lab. (United States)
Michael Shao, Jet Propulsion Lab. (United States)
Paul N. Swanson, Jet Propulsion Lab. (United States)
Gerard Theodore van Belle, Jet Propulsion Lab. (United States)
J. Kent Wallace, Jet Propulsion Lab. (United States)
James M. Walker, California Association for Research in Astronomy (United States)
Peter L. Wizinowich, California Association for Research in Astronomy (United States)

Published in SPIE Proceedings Vol. 3350:
Astronomical Interferometry
Robert D. Reasenberg, Editor(s)

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