laser 303 green pointer astronomy

There are sparrows, crows, pigeons, etc. on the roof and dog poop. The laser pointer seems to work, but what color of the laser is valid?The following figure shows relative visibility (easy to see). Generally speaking, green is obviously the most visible color visibility. The laser pen is cheap (green light) at 532 nm, nearly 520nm, which is most visible to most people, and it shows its power in a wide range of venues and highlights.Since the laser may harm the eyes, it is better not to illuminate the eyes of people and animals.However, the 50 mW laser pen used in the meeting was low in output, less than 1 mW, so the eyes were clear. It may be used to drive away crows
Extinction is animal cruelty.To be angry is not to abuse.Although it seems that all sounds are the voice of the speaker's alert voice, the crow is a clever bird that seems to be breaking down soon. I think using the eagle like an eagle seems to be effective, but it's often difficult.The laser is regulated by the law. If you use it unnecessarily, you will be punished.The man hanging on the plane was shown in the news.I couldn't see the light that lit up the night sky, so I could light up the light in the air and see the light from the reflected light. Therefore, a bright light source is needed. And, a big flashlight.Is it better to light up small dust than "long" wavelengths of green laser pointer astronomy or blue? The red laser pointer is first invisible (in the indoor experience).Please tell me the website of the special shop for laser pen, which can be used for starlight observation. Or if it's not the Internet, where can I buy it?I have a red laser collimator for reflecting the telescope, but I can only see reflection, I can't see the track. I don't know if the green laser is good because we want to see the trajectory.

https://www.kitlaser.com/green-laser-pointer-pen.html

Generally speaking, the orthodox by YAG crystal transform infrared wavelength into the format of the 1064nm, using sine wave harmonic convert them to "532 nm" green wavelengths, and that no other commercially available products It would be goodHowever, to be exact, it should include a wavelength of 532nm and a laser with a certain wavelength width.This wavelength definition is not commonly used in applications commonly referred to as laser Pointers, and what we call "532nm" is closer to "central wavelength."Green laser pens are too expensive, you need to be careful. Because there is a product that does not have IR (infrared) filters for cost cutting.

https://www.kitlaser.com/blue-laser-pointers.html

Before converting to 532nm, the base wave of YAG is a 1,064nm infrared 2000mW laser pointer beam that is not 100% converted to green wavelength, and no infrared (infrared) filter, and infrared laser will also come out on the same axis.Infrared lasers can not only be detected by human eyes, but also because they have a long wavelength, even if the eyelids are closed, they can also reach the retina.

http://jfame.com/blogs/18887/84944