Photometric observations of comets

We present CCD VRc photometry of 3 distant active comets visible in July, 2000. Time-series data cover 16 hours. Data were obtained with the 1.23m telescope of the...本研究公布了2000年7月可见的3颗遥远活跃彗星的电荷耦合器件（Charge-Coupled Device，CCD）VRc测光数据。其时序数据覆盖16小时观测时长，相关数据通过……的1.23米望远镜获取。