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Angular Pointing and Guidance for the Sydney University Stellar Interferometer

Published online by Cambridge University Press:  25 April 2016

W. J. Tango  and
E. D. Thorvaldson
W. J. Tango
Affiliation:
Chatterton Astronomy Department, School of Physics, University of Sydney, NSW 2006, AustraliaW.Tango@physics.usyd.edu.au
E. D. Thorvaldson
Affiliation:
Chatterton Astronomy Department, School of Physics, University of Sydney, NSW 2006, AustraliaW.Tango@physics.usyd.edu.au
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Abstract

The Sydney University Stellar Interferometer (SUSI) uses siderostats (plane, alt–azimuth mounted mirrors) to reflect starlight into the instrument. The analysis of the pointing and guidance of the siderostats by traditional methods is not practical and vector algebra has been used to develop the required algorithms. Real siderostats will not be ideal and can be modelled by a set of parameters. The methods for determining the model parameters and for incorporating them into the guidance and pointing algorithms are described. Field rotation also affects the operation of SUSI, and the field rotation angle and related quantities are also determined.

Keywords

astronomical instrumentationtelescopes
Type
Instruments, Techniques and Basic Measurements
Information
Publications of the Astronomical Society of Australia , Volume 13 , Issue 3 , June 1996 , pp. 249 - 257
Copyright
Copyright © Astronomical Society of Australia 1996

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