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Proceedings Paper

SUSI: an update on instrumental developments and science
Author(s): John Davis; Michael J. Ireland; Andrew P. Jacob; Julian R. North; Stephen M. Owens; J. Gordon Robertson; William J. Tango; Peter G. Tuthill
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Paper Abstract

The Sydney University Stellar Interferometer is a long baseline optical interferometer located in northern New South Wales, Australia. It has a North-South array of eleven fixed input siderostat stations giving a range of baselines from 5 to 640 m. Currently ten baselines from 5 to 160 m are fully operational and beam-combination and detection systems for the spectral ranges 430-520nm and 550-950nm are available. Dichroic beam-splitters have been introduced to allow simultaneous observations with both spectral systems. The original blue beam-combination system has been upgraded to improve sensitivity and to allow rapid wavelength switching. A software scheduler has been developed to automate much of the observational procedure including the acquisition of a star, fringe search and acquisition, recording of fringe scans, and the taking of photometric scans. A data pipeline for processing the observational data has been further developed to include seeing corrections and this has improved the calibration of the observational data. Preliminary results of scientific observations with both blue and red systems, including observations of single stars, binary stars and Cepheid variables are described.

Paper Details

Date Published: 23 June 2006
PDF: 9 pages
Proc. SPIE 6268, Advances in Stellar Interferometry, 626804 (23 June 2006); doi: 10.1117/12.668982
Show Author Affiliations
John Davis, Univ. of Sydney (Australia)
Michael J. Ireland, Univ. of Sydney (Australia)
Andrew P. Jacob, Univ. of Sydney (Australia)
Julian R. North, Univ. of Sydney (Australia)
Stephen M. Owens, Univ. of Sydney (Australia)
J. Gordon Robertson, Univ. of Sydney (Australia)
William J. Tango, Univ. of Sydney (Australia)
Peter G. Tuthill, Univ. of Sydney (Australia)

Published in SPIE Proceedings Vol. 6268:
Advances in Stellar Interferometry
John D. Monnier; Markus Schöller; William C. Danchi, Editor(s)

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