近几年,射电干涉仪使类星体,星系中心与恒星的方位测量达到极其精确的程度,通常可达0.01秒(弧度),在光学领域中,我们还远未达到这样的精度,但1986年底欧洲空间局发射的依巴谷(Hipparco)人造卫星将填补这个空白,加州大学伯克利分校的E. C. Sutton, S. Subramanian和C. H. Townes三人前不久利用红外线干涉测量技术测得了首批星体 In recent years, the radio interferometer has allowed the measurement of the quasar, galactic center and stellar azimuths to an extremely precise degree, usually up to 0.01 second (radians), and we are far from such precision in the field of optics This gap was filled by the Hipparco satellite launched by the European Space Agency. EC Sutton, S. Subramanian and CH Townes of the University of California, Berkeley, recently used infrared interferometry to measure the first stars