Green laser pointer is considered as the most popular laser among all series of laser diode technologies, and it is really a great work that the green laser pointer has got its field in area of astronomy field. How can green laser pointer is used in astronomy?
Comparing with other color laser crystal, the green color laser pointer is especially bright and the beam can be visible in more than 15 miles far away. The green color laser pointer owns the most powerful and bright beam, and which can scatter far miles away only in seconds. People would always choose a green laser pointer for stargazing, which is so bright that people can just feel the beam is nearly touching the star. Usually a 5mW green laser pointer can be selected to watch stars and constellations not far away. however, a higher power green laser pointer with an output power more than 100mW would be enough for astronomers to use when more than one person are watch stars and celestial objects. Besides, only a higher power green laser pointer can be enough to use in bad weather condition. The higher the output power, the brighter the beam will be. The higher power green laser pointer usually has better result of beam dispersion and visibility, so they would be much easier to scatter in heavy cloud. The high power laser pointer usually can reach the celestial object in seconds, and researchers have no need to wave hands and explain hardly to people around.