IHW COMET SPEC EDITED DIGITIZED IMAGE RECORD CROMMELIN V1.0

In preparation for the concerted international study of Comet Halley, the IHW conducted a trial run with observations of Comet Crommelin, largely during February and...为筹备针对哈雷彗星（Comet Halley）的协同国际研究项目，IHW以克罗姆林彗星（Comet Crommelin）为观测对象开展了试观测工作，观测时段主要集中在2月及……