The uses of green high powered lasers have become quite acceptable in astronomy not just in pointing objects but also in the processes necessary to adjust telescopes and for astrophotography. It is no wonder that the reason why a green laser is commonly used in astronomy is because of its visibility. Turns out, green is more visible to our eyes.
Green is also easily scattered by the atmosphere, so the light that is gives off is more visible as it is able to reflect off of more particulates. This particular color has a moderately high wavelength so that allows it to be easily scattered comparing it to red.
There is no other frustrating scenario in astronomy than an unsuccessful identification of an object in the dark open sky.
If you ever experienced trying to tell someone where a particular star or planet is in the sky just with your finger, you will know that this could be quite the daunting task. No matter how much you wave and point at it. So to solve this problem, green laser pointers were made.
Pointing objects in the sky is not the sole purpose of this type of laser pointer though. It can also serve as a guide for people who are watching others view the telescope. High powered lasers can be attached to a telescope using a bracket.
The direction of the laser should be parallel to the axis of the lens.
Green high powered lasers can point out objects in the sky faster, too. In using a green laser pointer, the level of power that will be used will depend on a few things. Laser power can range from 1mW to 200 mW.
If you are stargazing alone, the power you need for the laser will only be small like 5 mW. Stargazing with more people you probably should need more power, say 100 or so.
Ambiance of the light is considered when you are stargazing. If it is during dawn, using a low beam will be unfruitful. You may need more than that, around 50 or more.
Having said this, high power lasers are not always the best for everything. These lasers cause glaring and distraction. Many have been lured by the power of the light, rather than the object being viewed at and sometimes get into deep trouble using laser pointers on an aircraft.
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