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Research on the Errors in Determination of Precise Optical Positions of Radio Sources

Published online by Cambridge University Press:  19 July 2016

Lu Chun-Lin  and
Li Dong-Ming
Lu Chun-Lin
Affiliation:
Purple Mountain Observatory Academia Sinica Nanjing, China
Li Dong-Ming
Affiliation:
Purple Mountain Observatory Academia Sinica Nanjing, China

Extract

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To link the optical reference frame to extragalactic radio frame, an observation program is in progress in Purple Mountain Observatory (PMO) and Shanghai Observatory. In this program, 70 extragalactic sources will be observed with the 1.56 m astrometric reflector in Shanghai. The secondary reference stars are determined with the twin astrograph (D = 40 cm, f = 300 cm) in PMO, and about 50 radio stars and some bright extragalactic sources will be observed with the twin astrograph.

Type
Part 4: Realization and comparison of reference frames
Information
Symposium - International Astronomical Union , Volume 141: Inertial Coordinate System on the Sky , 1990 , pp. 499 - 500
Copyright
Copyright © Kluwer 1990 

References

Argue, A.N., de Vegt, C., Elsmore, B., Fanselow, J., Harrington, R., Hemenway, P., Kuhr, H., Kumkova, I., Niell, A.E., Walter, H.G., Witzel, A. : 1984, Astron. Astrophys. , 130, 191.Google Scholar
Chun-lin, Lu, Dong-ming, Li : 1990, Acta Astronomica Sinica , In press.Google Scholar
Walter, H.G. : 1988, private communication.Google Scholar