An overview is presented of a number of astrometry and astrophysics programs based on radio sources from the Parkes 2.7 GHz catalogues. The programs cover the optical identification and spectroscopy of flat-spectrum Parkes sources and the determination of their milliarc-second radio structures and positions. Work is also in progress to tie together the radio and Hipparcos positional reference frames. A parallel program of radio and optical astrometry of southern radio stars is also under way.

中文翻译：

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南方无线电源的天体测量

概述了基于 Parkes 2.7 GHz 目录中的无线电源的许多天体测量和天体物理学程序。这些计划涵盖了平谱帕克斯源的光学识别和光谱学，以及确定它们的毫弧秒无线电结构和位置。将无线电和 Hipparcos 位置参考系结合在一起的工作也在进行中。南部射电星的射电和光学天体测量并行计划也在进行中。