Palomar Testbed Interferometer: update

Benjamin F. Lane; M. Mark Colavita; Andrew F. Boden; Peter R. Lawson

doi:10.1117/12.390239

5 July 2000 Palomar Testbed Interferometer: update

Benjamin F. Lane, M. Mark Colavita, Andrew F. Boden, Peter R. Lawson

Proceedings Volume 4006, Interferometry in Optical Astronomy; (2000) https://doi.org/10.1117/12.390239
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

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.

Citation Download Citation

Benjamin F. Lane, M. Mark Colavita, Andrew F. Boden, and Peter R. Lawson "Palomar Testbed Interferometer: update", Proc. SPIE 4006, Interferometry in Optical Astronomy, (5 July 2000); https://doi.org/10.1117/12.390239

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