Choose the Suitable Laser Pointer for Stargazing

Using a laser pointer for stargazing can help one identify different stars and constellations easily. With the development of technology, more and more suitable laser pointers are developed. Now, astrophile have more choices to have their favorite laser pointers.

1.Which color is much brighter?
There are 4 main visible laser colors, they are violet blue, blue, green and red. As green color is more visible to human’s eyes comparing with other colors, which is 7 times brighter than the other colors accordingly to research. And because of that, green color laser pointer is always amateur astronomer’s first choice.
Green color includes two main wavelengths, 515nm and 532nm. 515nm green laser pointer is more shining, but the price is higher much than 532nm green laser pointer now.

2.How much output power to choose?
The higher the laser pointer output power, the more glisten, also the longer distance the laser pointer emits. No matter what color it is, the higher output power one is more shining than the lower one of the same color. For example,100mW red laser pointer is much more shining than 5mW red one.
For stargazing, choose 5mW and above.
50mW green laser pointer is regarded the most sufficient one both in price and laser beam. For a group of people, 100mW is considered as the perfect one.

3. How much is a laser pointer?
Price depends on wavelength/color, output power and other factors like laser diode, housing material, safety equipment, cooling system, guarantee time etc from dozens of dollars to hundreds of dollars. One should compare them carefully. Low price is attractive, but it should not be considered as the first aspect.
Meanwhile, a good laser pointer should have CE or FDA certificate. A good laser pointer is no doubt should have the authentication.

Choose the suitable laser pointer for the stargazing and make it be your perfect tool to enjoy your astronomy time with your friends.

Infrared Laser Used in Military

By taking full advantage of infrared laser's characterist, invisible, nowadays IR laser pointer is used in military field more and popular, such as target designation and raging, defensive countermeasurement, communications and directed energy weapons.

IR laser means the laser which emits the invisible beam to naked eyes with the wavelength of 808nm,980nm and 1064nm. Like other visible laser pointer, IR laser also can be used as laser sight by mounting on gun and aligned to emit a beam parallel to the barrel.

And aligned laser pointers are used as laser gunsights to aim a firearm.Some militaries use lasers to mark targets at night for aircraft. This is done to ensure that "friend" and "enemy" targets respectively. A friendly target may wear an IR emitting device that is only visible to those utilizing night vision (such as pilots.) To pinpoint the exact location of an enemy combatant, they would simply illuminate the target with a laser beam detectable by the attacking aircraft. This can be one of the most accurate ways of marking targets.

At the same time, ,military forces have IR lasers to illuminate hostile targets without revealing its position as infrared laser's invisibility.This is a quite useful gadget to do defensive countermeasurement. One can see enemy clearly by wearing detectable vision device even at night time, while hostile notices nothing.

With the development of technology, weapons are becoming more and more powerful. There is no doubt that infrared laser is playing its important role in weapons.

Modern Tool, Laser Alignment

Modern Tool, Laser Alignment

Laser is becoming more and more popular these days. When talking about its uses, what firstly come to mind are usually startgazing, teaching/conference tool, poping balloon, lighting match and other thermal expriments. But do you know laser alignment is acting as modern tool nowadays?

We all know, laser emits a very straight beam line, and because of that, it can be used in so many fields. While by this characterist together with advanced technology,there appears one new product,laser alignment.

Cross Laser Alignment

There are three forms laser alignment, they are called laser alignment systems together.Laser alignment systems are available in laser beams of dot, line, cross for various industrial applications.

laser alignment assures a quick, easy, accurate alignment in industrial application, decoration using,stone cutting, and wood cutting with industrial laser alignment systems.  All laser alignments are lightweight, durable, and precise in alignment work.

Line Laser Alignment

Dot projecting laser alignment emits the most accurate reference light spot for dot alignment in all required applications.
Line projecting laser alignment provides both moderate and accurate reference line on targeted surface where a line alignment is in need.
Cross projecting laser alignment provides you quick and precise two perpendicular lines on a target surface for various requirement alignment applications.

So now, the laser alignment takes place of pencil and ruler gradually.
I still remebere when I was young, my father always used pencil and ruler to mark the cutting line, but now with the help of line laser alignment, it is very convenient and distinct assistant tool.It's very cool, isn't it?

One more thing, these laser alignments can be operated by DC input. When they are mounted on the machine by braket, you don'tt need to worry about its power supply.

Laser Alignment

Notice,

A precision laser alignment system requires trained people who have the best laser alignment systems and a dedication to obtaining excellent results.

Who holds the laser alignment, safety first! Never stare into laser beam directly, every visual damage might occur. Do be cautious with laser alignment, and make a precision alignment.

How to choose a laser pointer?

There are so many different types of laser pointers, as a new beginner, one must be puzzled about how to choose them. Here, I have below suggestions from color, output power, size, price for you to learn.

1.Color. Because of different wavelength, there are 5 main colors laser pointers, they are blue violet laser pointer(405nm), blue laser pointer(445,460,473nm), green laser pointer(532nm), red laser pointer(635,650nm) and Infrared laser pointer(808,980,1064nm).They are all visible except infrared laser pointer. Green laser pointer is most used, as it is the most visible to human's eyes.It can be used in many fields, such as star-pointing.It is much more convenient when a fabulous green line pointing at the star directly, all people around can see the object without using gesture. Red laser pointer is always used for indoor meeting, like class-teaching. So, choose your favourite color.
2.Output Power. mW is the abbreviation of milliwatt.The higher of mW, the more power of laser pointer. For normal use, 1~5mW is enough, like stargazing, lecture, school teaching, business conference, issuing rescue signal, construction,mining fields, and medical teaching etc. Once the output power is more than 5mW, one should have some protective action, like wearing laser safety goggles.

3.Size. There are two main sizes laser pointer in LaserTo, one is called laser pointer, the other is called handheld laser pointer. Laser pointer is as big as a pen with the Dimension(D×L, mm) Φ14mm×171mm.While handheld laser pointer Dimensions(D×L, mm) is Φ23.5mm×180mm, like a flashlight.Both of them are portable.

4.Price. From dozens of dollar to hundreds of dollars, choose according to your fianacial situation. The most important thing, one should notice is that, no matter cheap or expensive laser pointer, it must not a shoddy. It should has CE or FDA certificate. Orelse, no matter how cheap it is, it is harmful to you,say no to it.
Also, one should pay much attention when using laser pointer,
1.Wearing a pair of goggles when operating laser pointer.
2. Don't see directly to the light directly by eyes.
3. Leave it from Children.
4. Don't point at skin when using high power laser pointer. Hope this is useful for the beginner to choose laser pointer. Enjoy your laser time.