Up: 1994-1996 CCD astrometric observations
The CCD observing campaigns we made at the Sheshan Station during 1994-1996
years are successful. The excellent 1.56m astrometric reflector provided by
the observatory together with the good seeing permitted us to obtain the
better quality results than photographic observation of Saturn's satellites.
Especially, we have now obtained some valuable measurements for the faint
satellites, which are usable for improving their theories. Our reduction
also shows that the method we used to define the reference system for
solving the calibration parameters was adequate for our purpose. From this
we have now found in our published data (1996) an inaccurate scale which
leads to the overlarge residuals, in particular for . We will
continue to develop such research for observation of the Saturnian satellite
system.
Acknowledgements
Authors wish to thank Prof. B.C. Qian and his staff
at the Sheshan Station for their kind assistance. We are also grateful to
Dr. Vienne for providing us his new version TASS1.7. We would like to thank
Dr. Gerard Dourneau for his helpful comments of this paper. Especial emphasis
must be
placed on that this work was carried out with financial support from
National Natural Science Foundation of China (NSFC) and Astronomy Research
Council.
Up: 1994-1996 CCD astrometric observations
Copyright The European Southern Observatory (ESO)