Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-30T12:28:59.310Z Has data issue: false hasContentIssue false
  • English
  • Français

Astrometric Interferometry — Can It Establish a Fundamental System?

Published online by Cambridge University Press:  19 July 2016

G. H. Kaplan
G. H. Kaplan*
Affiliation:
U. S. Naval Observatory Washington, D.C. 20392 USA

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The astrometric optical interferometer on Mt. Wilson is providing a new source of astrophysical and astrometric data on bright stars. The instrument, with 12-meter baselines, has been in operation since late 1986. The interferometer is capable of wide-angle astrometry, that is, the determination of very precise stellar positions within a reference frame defined by bright stars spread across a large area (of order one steradian) of the sky. This paper addresses the question of whether such an instrument can be used to establish a fundamental system — that is, one tied to the Earth in some well-defined way. Some astrometric data from this instrument are presented to illustrate the difficulties involved. Proposed means of addressing these problems in future instruments are discussed.

Type
Part 3: Concepts, Definitions, Models
Information
Symposium - International Astronomical Union , Volume 141: Inertial Coordinate System on the Sky , 1990 , pp. 241 - 250
Copyright
Copyright © Kluwer 1990 

References

Colavita, M.M., Shao, M., Staelin, D.H. : 1987, Appl. Opt. 26, 4113.Google Scholar
Kaplan, G.H., Hughes, J.A., Seidelmann, P.K., Smith, C.A., Yallop, B.D. : 1989, Astron. J. 97, 1197.Google Scholar
Kaplan, G.H., Hershey, J.L., Hughes, J.A., Hutter, D.J., Johnston, K.J., Mozurkewich, D., Simon, R.S., Colavita, M.M., Shao, M., Hines, B.E., Staelin, D.H. : 1988, in Proceedings of the NOAO-ESO Conference on High Resolution Imaging by Interferometry, ed. Merkle, F. (European Southern Observatory, Garching), p. 841.Google Scholar
Mozurkewich, D., Hutter, D.J., Johnston, K., Simon, R.S., Shao, M., Colavita, M.M., Staelin, D.H., Hines, B., Hershey, J.L., Hughes, J.A., Kaplan, G.H. : 1988, Astron. J. 95, 1269.Google Scholar
Shao, M. : 1988, in Proceedings of the NOAO-ESO Conference on High Resolution Imaging by Interferometry, ed. Merkle, F. (European Southern Observatory, Garching), p. 823.Google Scholar
Shao, M., Colavita, M.M., Hines, B.E., Staelin, D.H., Hutter, D., Johnston, K.J., Mozurkewich, D., Simon, R.S., Hershey, J.L., Hughes, J.A., Kaplan, G.H. : 1988, Astron. Astrophys. 193, 357.Google Scholar