There is nothing more frustrating in astronomy that while unsuccessfully trying to identify the object in the night sky to the members by waving his arms, pointing fingers, describing and gestulating. An elegant, simple and highly effective solution to this problem is to use green laser pointers to point out objects in the sky.

Green Laser Pointers high technology gadgets that are becoming more and more popular in astronomy. Not only are Green Laser pointers ideal for pointing at objects, they are also very useful for adapted telescopes and atrophotography.

Why Green laser pointers

Green Laser pointers are the preferred laser pointer color for astronomy because green is the most visible laser pointer color. The reason why green is more visible is the human eye is most sensitive to green light. The second reason is the effect of light in the atmosphere. Light is visible in the sky when the atmosphere scatters them and higher wavelengths are scattered more than higher wavelengths. Green is a medium wavelength so it scatters more and more visible than longer wavelengths, such as red.

Other applications

using green laser pointers to point out celestial object to people next to you is not the only application for laser pointers astronomy. A green laser pointer can also be mounted on a telescope with a bracket or by holding the laser by hand in the groove parallel to the telescopes optical axis. The green laser pointer beam clearly shows where the telescope is pointing and the object to view through a telescope.

A green laser pointer mounted on a telescope can also makes aligning the telescope to a celestial object much faster and easier.

How powerful should the laser pointer be?

Green Laser pointers can range in power levels from 1mW all the way to 200mW so deciding which power level to use can be tricky. The factors to consider when choosing the power level for astronomy lasers are

-The number of people star gazing with you. If there is only one person, a low power such as 5mW will be suitable. If you are stargazing with a large group of people who will not stand next to you, the laser has to be more prominent so high power level such as 100mW would be suitable.

-The level of ambient light. If you are stargazing at dawn / dusk, during the full moon or in built-up areas where there is a lot of light pollution, low power beam such as 5mW would be harder to see. You would usually need at least 50mW or more in this kind of situation.

Higher power laser pointers are not always better because any glare from them can easily ruin your night vision and can provide a distraction. Many celebrities nights have been ruined when people have been paying more attention to the new and exotic high power laser used to point to objects than the actual objects themselves.

should

Deliberately pointing a laser at aircraft is a very serious offense in each country so avoid star gazing near airports and do not use a laser when an aircraft section sky be viewer.

Article is courtesy of Dragon Lasers -. No 1 lasers, laser pointer and green laser online store