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Are laser Pointers a deterrent? It sounds like it does, but I think it's more likely to remind people to resist. Another legal issue is that many countries regard aiming laser sights at a person as preparation to fire. When a police officer shoots a visible laser at the other person, the other person may use me. I'm very cooperative. Why did you shoot me? "Green laser pen are the best way we have found to point out objects in the night sky to the public," says Monty Robson, a commercial airline pilot and avid amateur astronomer. He regularly conducts observing sessions for high-school students and their families at the John J. McCarthy Observatory in Connecticut. "I would be very disappointed," Robson adds, "if these useful educational tools became restricted by law."Amateur astronomers can help minimize the risk of such an outcome by using common sense, following the safe practices outlined above, and educating others about the safe use of laser pointers. So how safe are these things (the sub-5mW class IIIa version)? They won't burn you. They won't cause permanent eye 30000mw Laser Pointer. Tests were performed on individuals who were scheduled to have an eye removed for medical reasons. For the purposes of the test, the eye was normally functioning. Test subjects stared directly at 5 mW lasers with there to-be-removed eye for five to fifteen minutes from various angles. No permanent eye damage occured. Some changes in tissue were noticed. Of course, in a real-world incident, laser light entering the eye would likely last for less than one second, as people naturally look away from bright things and close their eyes, so there is no real danger of direct damage.
Laser pointers. They are great tools. They are very useful in pointing out objects in the night sky. Many companies sell these lasers for the waiting masses. Many are basically the same. Green Lasers in the range of 5mw or less. There are a few companies that tweak these lasers to output more than 5mw of power, but they command a premium price. I personally have one of the 5mw green laser pointers. It does a good job, but there are several situations that limit its usefulness. Cold, low batteries, and "less than dark" skies can make my 5mw laser almost insufficient for pointing out astronomical objects.Enter the Wicked Laser Extreme II green laser. I recently received one to review, and I couldn't wait to try it out. I was not sure what model Wicked Lasers was going to send me, but when I received the laser, it was rated at 52 mw. WOW! I was surprised and very happy with the opportunity to try one of their top models. I gathered my 1000mw Laser Pointer together to get a first impression.First was my red laser. Always cool, and a nice red dot with little reflection. Does a nice job as a red laser pointer. Next was my 5mw green laser. Nice green beam, tight and capable of a bit of reflection of the beam off of the target wall. This is what I have been used to in the realm of the green laser pointer. Next, the Wicked Laser Extreme II.Holy smokes. Unbelievable. That is one impressive laser. It produced a large amount of reflection off of the target wall. It produced a much wider beam, and a larger target spot, but this is what I expected. I did not have any idea how bright the beam of this laser would be. It is bright. However, the real proof of this laser is in the use in the night sky.
Have you ever been outside under a clear starry sky with a friend or family member, when you wanted to point out the location of the Orion Nebula, or trace the outline of the Sagittarius "Teapot" asterism? You point your finger, but that just doesn't cut it. "Where are you pointing? Do you mean the third bright star up from that middle pine tree over there?" Save yourself from frustration and take the guesswork out of the equation with the Orion SkyLine Deluxe Green Laser Pointer. Its bright green beam makes pointing out objects in the sky as easy as pie. The Orion SkyLine Deluxe Green Laser Pointer is perfect for stargazers. It emits a thin but distinct green laser beam that appears to stretch all the way to the stars! SkyLine's < 5mW green beam just keeps going and going, seemingly to infinity. It works in light-polluted or moonlit skies just as well as crystal-clear skies in remote locations. It's great for pointing out stars, planets, constellations and more for others to see. The SkyLine Deluxe now uses electronic feedback regulation to ensure ultra-stable beam intensity compared to other green lasers on the market, even in cold temperatures.The aluminum laser pointer body is 6" long and features a convenient pocket clip. Two AAA batteries are included.Laser light from Laser pointer Green 3000mw can potentially burn the retina of the human eye. The danger is obviously greatest if the beam is aimed directly into the eye, rather than merely scattered from the beam and seen from the side. The danger is dependent on the wavelength of the laser light, the power of the laser pointer, the divergence of the laser beam, the distance of the person from the pointer, whether the beam is seen directly or via a reflection, how long the beam is viewed and whether the human eye's natural 'blink response' to bright light occurs.
It also came in a very nice wooden box, and a pair of batteries. For my order, they were also giving away a free red laser pointer with it. I don't much care about this, but the free red laser pointer was packed into a second plastic foam case, which was much too big for the red laser pointer, but perfect for the green one. I don't know if they always give out this second case for the green pointer, but if you buy a pointer from them I suggest you ask them about it. The wooden box is very nice, but not very practical. The plastic foam case on the other hand is much more practical for slipping into your pocket or some luggage, and it provides nice protection. It closes with a flap that has two snaps in it, and it has slots for a spare pair of batteries. This is the case I'll be using whenever I'm carrying this pointer. So, how does my laser work? It works GREAT! Exactly as described - a Laser Sight beam of light protrudes up and more or less stops right on the object you are pointing to. The end of the beam is a bit more blurry, and fades slightly, but it really seems to have an end where the beam essentially stops. It's extremly apparent what you are pointing to. I haven't yet tested to see how far away from me it remains visible, although people standing six feet away from me have been able to see it without a problem. What about light pollution? Many web sites say that in light-polluted conditions you won't see the beam, and you'll need more power. I suppose it depends on what they mean. The first time I used it, I was in a rural area, although not very far from the city, and there was a setting gibbous moon. Limiting magnitude was around 5.0, maybe 5.5. The laser was bright and easy to see.
I am aware of the possible problems in using a laser like this in the night sky. That is why I was extremely careful in where the beam was pointed, how long the beam was produced, and what was in the area to be affected by the use of this beam. All laser pointers should never be considered, or treated, as a toy. They should never be pointed at anyone, nor should children, or adults that act like children, be allowed to use any laser. This is doubly important with this laser. It is powerful. It is bright. It is a tool, and should be treated with respect.I really do like this handheld laser. It is very sturdy, well made, and relatively efficient in its battery use. Using the rechargeable 16340 lithium-ion batteries definitely produces a brighter beam than the nonrechargeable 123 lithium batteries. I like the fact that you can focus and/or defocus the beam for your intended usage. I wish the focuser assembly was a little tighter when in operation. The rotating end cover worked well and was very handy in protecting the lens assembly from unnecessary exposure to damage. A welcome addition to the rotating cover would be the ability to secure it in either a full open or a full closed position. The rotating barrel lock assembly seems very sturdy and worked well. The arrow impression on the center of the barrel lock definitely helped in determining whether the High Power Laser Pointer lock was turned on or off. Once I left the laser on a couple of times in my pocket, I realized that a method of attaching the 3.5 mm security plug to a wrist band of some sort might be a good way to keep the laser from turning on in your pocket without having to disable the laser using the barrel lock key. For laser pointers, I'm a much bigger fan of momentary switches to activate the laser than I am to toggle switches. However, it certainly is not a deal killer for this handheld laser. The switch, with its accompanying LED lamp, seems very sturdy and reliable.
According to a test conducted by the National Institute of Standards and Technology (NIST) in 2013, if 44% of the green and red laser beams tested (122 laser tests in total) do not meet federal safety standards, about 90%. What's more worrying is that nearly half of the test pointers emit light beams that are twice the limit set by federal regulations. As you may know, green lasers are much more powerful and are generally classified as Class 3a lasers in the United States because they measure less than 5 milliwatts. However, please pay attention to label permissions. Green lasers are very popular these days, especially by astronomers and astronomers. The green laser emits a light beam with a wavelength of 532 nanometers, and the red laser emits a light beam with a wavelength of 630 nanometers.