Abstract
The authors present a method for performing global astrometry with the proposed Orbiting Stellar Interferometer. Because it is dedicated to wide-angle astrometry, OSI has the intrinsic capabilities to achieve global astrometry, even though it doesn’t measure directly relative angles between pairs of stars, such as HIPPARCOS. In this paper, a time-independent model is shown, leading to a coherent solution for the positions of reference stars on the whole sky. With an initial measurement accuracy of 10 micro-arcseconds, corresponding to an accuracy of 340 picometers in the knowledge of the delay-line position of the observing interferometer, the consistent least-squares solution gives an accuracy by which the astrometric parameters can be obtained around 2–3 micro-arcseconds. (5 Ref.)
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© 1998 Springer-Verlag Berlin Heidelberg
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Burkhardt, G. et al. (1998). Positional Astronomy, Celestial Mechanics. In: Burkhardt, G., et al. Literature 1997, Part 1. Astronomy and Astrophysics Abstracts, vol 67. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-51758-7_6
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DOI: https://doi.org/10.1007/978-3-642-51758-7_6
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-51760-0
Online ISBN: 978-3-642-51758-7
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