There are mainly two ways to track the sun, photoelectricity track and sunangle track.
太阳跟踪的方法主要有两种,光电跟踪和视日运动轨迹跟踪。
2
During the October 6, 2008 flyby of Mercury, MESSENGER's NAC captured a new view of the bright, radial ejecta rays of Kuiper crater that were previously imaged by Mariner 10 at a lower SunAngle.