What is the purpose of the astronomical laser pointer?

The first thing to know is that a qualified astronomical laser pointer must emit monochromatic light, and even if it passes through a prism, there will be no dispersion phenomenon, while the colored light emitted by ordinary color lamps is often a mixture of red, green and blue. The resulting polychromatic light will "appear" as soon as it passes through the prism. The choice of astronomical Green laser pointer mainly focuses on light color, not power. The size of the laser pointer is also relatively large, and the portability is relatively low. It is mainly used in complex environments with strong light interference (such as in the daytime or in a bright exhibition hall). It is meaningless to refer to the stars. After all, the night sky does not exist. Strong light interference. Astronomical laser pointers are usually green beams, which is the vast majority of cases, but there are other tools that use other light, such as stars, such as blue. In addition, the astronomical laser pointer should also have the characteristics of long-range distance, which can ensure that you can point to more sky and have a better astronomical experience.