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The Palomar Testbed Interferometer

delete1999-01-01
delete286
delete
OA
AI
M
M. M. Colavita *
J
J. Kent Wallace
B
B. E. Hines
Y
Yekta Gürsel
F
F. Malbet
D
Dean L. Palmer
X
Xiaopei Pan
M
M. Shao
Y
Yu, JW
A
A. F. Boden
D
Dumont, PJ
J
J. Gubler
C
C. Koresko
K
Kulkarni, SR
B
Benjamin F. Lane
D
D. W. Mobley
V
van Belle, GT
DOI：10.1086/306579delete
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Abstract

Abstract

En 中文
The Palomar Testbed Interferometer (PTI) is a long-baseline infrared interferometer located at Palomar Observatory, California. It was built as a testbed for interferometric techniques applicable to the Keck Interferometer. First fringes were obtained in 1995 July. PTI implements a dual-star architecture, tracking two stars simultaneously for phase referencing and narrow-angle astrometry. The three fixed 40 cm apertures can be combined pairwise to provide baselines to 110 m. The interferometer actively tracks the white-light fringe using an array detector at 2.2 mu m and active delay lines with a range of +/-38 m. Laser metrology of the delay lines allows for servo control, and laser metrology of the complete optical path enables narrow-angle astrometric measurements. The instrument is highly automated, using a multiprocessing computer system for instrument control and sequencing.
Keywords:
atmospheric effects
instrumentation : detectors
instrumentation : interferometers
techniques : interferometric

Journal

Astrophysical Journal cover
Astrophysical Journal
IF:
5.4
Papers:
8.3W
Citations:
32.0W

Organization

No organization information available