9 . for astrophotographic project group , entries may be submitted either in single person or a group of no more than five members . entries should comprise a series of at least two photographic images depicting an astronomical observation or a comparison in astrophotographic technique . a report written in either chinese or english describing the objectives , procedures and results of the project is required 9 .天文摄影计划小组参赛作品可以个人名义或最多五人的组合提交，作品必须包括一系列最少两张展示天文现象的观测照片或天文摄影技术的比较照片，并须附以中文或英文撰写的报告，阐释观测的目的程序及结果。
