摘要
本文介绍了1990年7月19日至7月25日国际联测期间太阳活动的情况和紫金山天文台的观测情况,并对联测期间内的3个黑子群及产生的耀斑进行了一些初步分析.
In this paper, the solar activity and Ha observations at the Purple Mountain Observatory during the interval of international cooperative observation (July 19—25, 1990) are described. Some preliminary analyses of the data of two flares and some sunspot groups are also given.
