Hostname: page-component-76fb5796d-9pm4c Total loading time: 0 Render date: 2024-04-27T03:35:54.623Z Has data issue: false hasContentIssue false
  • English
  • Français

Contributions of the USNO to the Optical Reference Frame

Published online by Cambridge University Press:  12 April 2016

Thomas Corbin
Thomas Corbin*
Affiliation:
Astrometry Department, U.S. Naval Observatory Washington DC, USA

Extract

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.

A good, working definition of what is required in a celestial reference frame is that it must provide observable fiducial points on the Celestial Sphere with internally consistent positions that are referred to coordinate axes of known direction. In reality, this statement gives the goals in the reverse order from that in which each must be achieved, the definition of the axes, or zero points of the system give orientation to the observationally defined set of primary objects whose coordinate relation to each other must give the frame rigidity. Finally, the primary objects are generally too sparse to define the frame within areas of less than tens of square degrees, and so additional objects must be related to the frame to increase the density. This last step is required to make the frame useful for most observational applications.

Type
Reference Systems and Astronomical Standards
Information
International Astronomical Union Colloquium , Volume 165: Dynamics and Astrometry of Natural and Artificial Celestial Bodies , 1997 , pp. 453 - 462
Copyright
Copyright © Kluwer 1997

References

Corbin, T.E.: 1995, in: Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry, IA U Symposium 166 (Hoeg, E., Seidelmann, P.K., eds), Kluwer, Dordrecht, p.35. Google Scholar
Corbin, T.E. and Urban, S.E.: 1990, in: Inertial Coordinate System on the Sky, IAU Symposium 141 (Lieske, J.H., Abalakin, V.K., eds), Kluwer, Dordrecht, p.433.Google Scholar
Fricke, W., Schwan, H., and Lederle, T.: 1988, “Fifth Fundamental Catalog Part I”, Veröl. Astron. Rechen-Inst. No. 32, Braun, G., Karlsruhe.Google Scholar
Fricke, W., Schwan, H., and Corbin, T.: 1991, “Fifth Fundamental Catalog Part II” Veröff. Astron. Rechen-Inst. No. 33, Braun, G., Karlsruhe.Google Scholar
Gunn, J.E.: 1995, Bull. Am. Astron. Soc. 27, 875.Google Scholar
Hutter, D.J., Johnston, K.J., and Mozurkewich, D.: 1995, in: Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry, IAU Symposium 166(Hoeg, E., Seidelmann, P.K., eds), Kluwer, Dordrecht, p.23 Google Scholar
Hutter, D.J.: 1995, Bull. Am. Astron. Soc. 27, 1452.Google Scholar
Johnston, K.J. et al.: 1995, Astron. J. 110, 880.Google Scholar
Kovalevsky, J. et al.: “The Hipparcos catalog as a realization of the extragalactic reference system”, Astron. Astrophys., in preparation.Google Scholar
Monet, A.K.B.: 1995, in: Astronomical and Astrophysical Objectives of Sub-Milliarcsecond Optical Astrometry, IAU Symposium 166 (Hoeg, E., Seidelmann, P.K., eds), Kluwer, Dordrecht, p.405. Google Scholar
Monet, D.G.: 1996, Bull. Am. Astron. Soc. 28, No 3, 905.Google Scholar
Morrison, L.V.: 1995, IAU Working Group on Reference Frames Circular Letter No 1, issued to WGRF members and supporting commissions.Google Scholar
Pier, J.R. and Monet, D.G.: 1993, “Workshop on Databases for Galactic Structure’’, in: Van Vleck Observatory Contribution No 13 (Philip, A.G.D., Hauck, B., Upgren, A.R., eds), L. Davis Press, Schenectady, p.161. Google Scholar
Urban, S.E. and Corbin, T.E. 1996, Astron. Astrophys. 305, 989.Google Scholar
Worley, C.E. and Douglass, G.G.: 1993, “Workshop on Databases for Galactic Structure”, Van Vleck Observatory Contribution No 13 (Philip, A.G.D., Hauck, B., Upgren, A.R., eds), L. Davis Press, Schenectady, p.35. Google Scholar
Zacharias, N.: “Astrometrie quality of the USNO CCD astrograph”, Astron. J., in preparation.Google Scholar
Zacharias, N., de Vegt, C., Winter, L., and Johnston, K.: 1995, Astron. J. 110, 3093.Google Scholar
Zacharias, N., Zacharias, M., Douglass, D., and Wycoff, G.: 1996, Astron. J. 112, 2336.CrossRefGoogle Scholar