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A Progress Report on the Establishment of the Radio / Optical Reference Frame

Published online by Cambridge University Press:  19 July 2016

J. L. Russell ,
K. J. Johnston ,
C. de Vegt ,
N. Zacharias ,
C. Ma ,
D. Shaffer ,
D. L. Jauncey ,
G. L. White ,
G. Nicolson  and
A. Kemball
...Show all authors
J. L. Russell
Affiliation:
U. S. Naval Research Lab, Code 4030 Washington, D.C. 20375 USA
K. J. Johnston
Affiliation:
U. S. Naval Research Lab, Code 4030 Washington, D.C. 20375 USA
C. de Vegt
Affiliation:
Hamburger Sternwarte, Gojenbergsweg 112 D-2050 Hamburg 60 Germany, Fed. Republic
N. Zacharias
Affiliation:
Hamburger Sternwarte, Gojenbergsweg 112 D-2050 Hamburg 60 Germany, Fed. Republic
C. Ma
Affiliation:
Crustal Dynamics Project Goddard Space Flight Center, Code 621.9 Greenbelt, MD 20771 USA
D. Shaffer
Affiliation:
Crustal Dynamics Project Goddard Space Flight Center, Code 621.9 Greenbelt, MD 20771 USA
D. L. Jauncey
Affiliation:
Australia Telescope National Facility CSIRO Division of Radiophysics Sydney, Australia
G. L. White
Affiliation:
Australia Telescope National Facility CSIRO Division of Radiophysics Sydney, Australia
G. Nicolson
Affiliation:
Hartebeesthoek Radio Astronomy Observatory Meiring Naude Rd Pretoria, South Africa
A. Kemball
Affiliation:
Hartebeesthoek Radio Astronomy Observatory Meiring Naude Rd Pretoria, South Africa
R. Hindsley
Affiliation:
U. S. Naval Observatory Washington, D.C. 20392
J. Hughes
Affiliation:
U. S. Naval Observatory Washington, D.C. 20392
J. E. Reynolds
Affiliation:
Mount Stromlo and Siding Spring Obs. Australian National University Woden, ACT 2606, Australia

Extract

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In 1987 we began a 5-year program to establish a reference system of at least 400 extragalactic sources which are compact and flat spectrum in the radio and which also display optical emission. This reference frame is to be global with about one source per 100 sq deg (Johnston, et al., 1988). The program incorporates some data which had been obtained previously for other purposes. Altogether, in one or another aspect of the program, 489 sources have been considered so far.

Type
Part 4: Realization and comparison of reference frames
Information
Symposium - International Astronomical Union , Volume 141: Inertial Coordinate System on the Sky , 1990 , pp. 281 - 284
Copyright
Copyright © Kluwer 1990 

References

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