摘要
根据Bien等人提出的方法计算了（FK5－Perth70）的星表系统差，结果表明：（1）Perth70星表相对于FKS的赤经系统变化，与FK4相比，比较平稳而且波动也较小，系统差在南天的高赤纬区较为明显。（2）在赤纬系统上Perth70星表和FK4有相似的波动。（3）Perth70星表几乎没有星等差存在。因此，Perth70星表可以认为是一个精度很高的南天星表。
According to the method of Bien et al., tbe systematic differences FK5-Perth70 are calculated. The results show: (1) The systematic changes of Perth70 related to FK5 on right ascension are smoother and smaller than those of FK4, especia-lly at the region of higher declination in southern sky. (2) There are the simi-larities of systematic fluctuation on declination between Perth70 and FK4. (3)Almost no magnitude difference is discovered. Therefore, Perth70 is a southern catalogue with high accuracy.
出处
《中国科学院上海天文台年刊》
1994年第15期113-117,共5页
Annals Shanghai Astronomical Observatory Chinese Academy of Sciences
