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Proceedings Paper

Palomar Testbed Interferometer: update
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Paper Abstract

The Palomar Testbed Interferometer is a long-baseline near- infrared interferometer operating at Palomar Observatory, CA. The interferometer has a maximum baseline of 110 m, 40- cm collecting apertures, and active fringe tracking. It also incorporates a dual-star architecture to enable cophasing and narrow-angle astrometry. We will discuss recent system improvements and engineering results. These include upgrades to allow for longer coherent integration times, H band operation, and cophasing using delay line feedforward. Recent engineering tests of astrometry in dual-star mode have shown a night-to-night repeatability of 100 (mu) as on a bright test target. Several new observation planning tools have been developed, and data reduction tools have been automated to allow fully pipelined nightly reductions and archiving.

Paper Details

Date Published: 5 July 2000
PDF: 7 pages
Proc. SPIE 4006, Interferometry in Optical Astronomy, (5 July 2000); doi: 10.1117/12.390239
Show Author Affiliations
Benjamin F. Lane, California Institute of Technology (United States)
M. Mark Colavita, Jet Propulsion Lab. (United States)
Andrew F. Boden, Jet Propulsion Lab. (United States)
Peter R. Lawson, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 4006:
Interferometry in Optical Astronomy
Pierre J. Lena; Andreas Quirrenbach, Editor(s)

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