Laser Pointer
Laser Pointer
If I shine a laser pointer at the moon would it dazzle an astronaut on the surface?
A handheld laser pointer. I know they come in a range of colours and powers. What would the astronaut see if they looked at Earth at the time the light reached the moon?
No, it would not be visible on the Moon. There is a science experiment where powerful lasers on Earth are aimed at the retro-reflector mirrors on the Moon, and we get only a few photons back each second.
A 15 watt laser spreads out to about 7 km by the time the beam gets to the moon (your laser pointer spreads out a lot more than that). The power of the beam on the Moon is only 0.15 microWatts!
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Spectra Laser Level LP50 Self Leveling Laser Pointer $289.00 |
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New JOHNSON AccuLine Pro 40-6680 Self-Leveling, Five-Beam Laser Pointer Bright $285.00 |
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Spectra Laser Level LP30 Self Leveling Laser Pointer $229.00 |
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MorrisProducts Professional Infrared Thermometer with Laser Pointer 59116 $203.99 |
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ACCULINE PRO 40-6680 SELF-LEVELING 5 BEAM LASER POINTER $199.99 |
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Spectra Laser Level LP30 Self Leveling Laser Pointer $150.00 |
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MorrisProducts Pocket Infrared Thermometer with Laser Pointer 59114 $100.78 |
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Digital Ultrasonic Laser Distnace Measure Measurer Tough Pointer Range Finder $49.45 |
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Best Digital Ultrasonic Laser Distnace Measure Measurer Tough Electronic Pointer $49.00 |
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ULTRASONIC DISTANCE MEASURE METER LASER POINTER FEET MM $39.99 |
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ULTRASONIC DISTANCE MEASURE METER LASER POINTER FEET MM $39.99 |
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NEW ULTRASONIC DISTANCE MEASURE METER LASER POINTER FEET MM M D $39.99 |
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NEW ULTRASONIC DISTANCE MEASURE METER LASER POINTER FEET MM M D $39.99 |
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ULTRASONIC DISTANCE MEASURE METER LASER POINTER FEET MM $39.99 |
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SuperTough – Contractor-grade Ultrasonic Distance Measurer with Laser Pointer $39.99 |
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ULTRASONIC DISTANCE MEASURE METER LASER POINTER FEET MM $39.99 |
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NEW ULTRASONIC DISTANCE MEASURE METER LASER POINTER FEET MM M D $39.99 |
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NEW ULTRASONIC DISTANCE MEASURE METER LASER POINTER FEET MM M D $39.99 |
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ULTRASONIC DISTANCE MEASURE METER LASER POINTER FEET MM $39.99 |
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Laser Dimension Master II Ultrasonic Distance Measure with Laser Pointer $39.95 |
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Ultrasonic Distance Meter with Laser Pointer $29.99 |
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•••NEW••• Ultrasonic Distance Measurer and Laser Pointer (calculates area, temp) $27.47 |
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LCD Ultrasonic Laser Pointer Distance Meter Volume Area Measurer 1mW $23.09 |
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ULTRASONIC DISTANCE MEASURE METER LASER POINTER FEET/M $22.99 |
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Ultrasonic Handheld Laser Pointer Distance Measurer Up to 18 Meter or 60FT Range $18.99 |
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Ultrasonic Handheld Laser Pointer Distance Measurer Up to 18 Meter or 60FT Range $18.99 |
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Ultrasonic Handheld Laser Pointer Distance Measurer Up to 18 Meter or 60FT Range $18.99 |
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Ultrasonic Handheld Laser Pointer Distance Measurer Up to 18 Meter or 60FT Range $18.99 |
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Ultrasonic Handheld Laser Pointer Distance Measurer Up to 18 Meter or 60FT Range $18.99 |
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Ultrasonic Handheld Laser Pointer Distance Measurer Up to 18 Meter or 60FT Range $18.99 |
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Ultrasonic Handheld Laser Pointer Distance Measurer Up to 18 Meter or 60FT Range $18.99 |
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Ultrasonic Distance Measurer Meter Laser Pointer 3007 $18.99 |
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New LCD ultrasonic Laser Pointer + Distance Measurer US $18.80 |
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New LCD ultrasonic Laser Pointer + Distance Measurer $18.80 |
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New LCD ultrasonic Laser Pointer + Distance Measurer $18.79 |
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LCD Ultrasonic Distance Meter Measurer + Laser Pointer $18.45 |
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New LCD with Backlight ultrasonic Laser Pointer +Distance Measurer192 Weight130g $18.18 |
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LCD Ultrasonic Laser Pointer + Distance Measurer New $17.99 |
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SuperTough Ultrasonic Distance Measurer + Laser Pointer $17.99 |
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LCD ultrasonic Laser Pointer+Distance Meter Measurer $17.99 |
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LCD ultrasonic Laser Pointer+ Distance Meter Measurer for construction building $17.99 |
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Ultrasonic Laser Pointer Distance Measurer Measuring Handheld Gauge LCD Display $17.99 |
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LCD ultrasonic Laser Pointer+ Distance Meter Measurer for construction building $17.79 |
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LCD ultrasonic Laser Pointer+ Distance Meter Measurer for construction building $17.79 |
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LCD ultrasonic Laser Pointer+ Distance Meter Measurer for construction building $17.79 |
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LCD ultrasonic Laser Pointer+ Distance Meter Measurer for construction building $17.79 |
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LCD ultrasonic Laser Pointer+ Distance Meter Measurer for construction building $17.79 |
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Quartet Class Two Multifunctional Laser Pointer with Strobe $25.99 This multifunctional laser pointer allows you to emphasize key points in your presentation with underlining and strobe blinking. This laser has a sleek metal finish and a projection distance of 150 yards. |
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HiRO 2.4GHz WiFi Presenter with Laser Pointer & Mouse $35.49 Control for PowerPoint presentation, laser pointer, and wireless mouse functionErgonomic design and compact sizeEasy to use like a normal wireless mouse |
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Red Laser Pointer Sight w/ Mount Brackets $34.99 This laser scope is a high quality scope-mounted laser pointer for your air rifle, air pistol or crossbow. This red sight provides a wide field of view and is suitable for rapid-firing or shooting moving targets and includes mounting brackets. |
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rooCASE Laser Pointer/ LED Light Capacitive Stylus Pen for iPad 2/ Tablets $10.49 This rooCASE 3-in-1 capacitive stylus have integrated laser pointer and LED light, works great for presentation. Lightweight aluminum design pen body that weighs in at only 0.8 ounces. |
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HiRO H50181 4-in-1 Black Wireless Green Laser Pointer/ Multimedia Control $58.99 Focus on connecting with your audience using the HiRO laser pointer and multimedia control. The control allows you to operate your computer from an extended distance so that you can give presentations with confidence. |
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Wizstylus 3-in-1 Capacitive Stylus Pen $12.99 This capacitive stylus designed for touchscreen devices utilizes a sleek pen form, perfect for carrying around. This durable metal stylus features an integrated capacitive stylus, red laser pointer, and LED reading light. |
Laser Pointer
Astronomy Laser Pointers – Green Laser Pointers for Astronomy
High power green laser pointers are becoming more and more popular for use in astronomy. Whether you are star-gazing with your astronomy club buddies or conducting an astronomy lecture outdoors, there is nothing more frustrating than unsuccessfully trying to identifying a star or constellation in the sky. Before portable lasers were available, the only ways were to either point to it with your index finger or describe the approximate position verbally. With new technology comes new hope for astronomers worldwide! By using a high power laser pointer, it is now possible to aim a visible laser beam virtually touching the star or constellation you want to point out. The era of astronomy laser pointers is here.
Green Laser Pointers for Astronomy
Green laser pointers are considerably brighter than all other visible color lasers because the human eye is most sensitive to the color green. At the same output power, a green portable laser will appear much brighter than either a yellow, blue or red laser. When we speak of the term “astronomy laser pointer,” it is most often associated with a green laser pointer.
Telescope Alignment with a Laser Pointer
Green laser pointers are not only useful for pointing out stars and constellations, it has other uses in astronomy as well. You can mount a green portable laser onto a telescope using its factory provided brackets (make sure to align the laser parallel to the telescope). If brackets are not available, you can just hold the laser down using your hands. A green laser pointer mounted on a telescope can make aligning the telescope to objects in the sky much faster and easier.
Power Output
Green laser pointers come in a variety of power output ranging from 1mW to 500mW. Which one is suitable for astronomy? More specifically, which is most suitable for your needs? What power output should you choose?
1) A 5mW green laser pointer has a bright laser end “spot”. The actual laser beam is only faintly visible. These are more suitable for presentation purposes and not astronomy.
2) A 15mW – 75mW green laser pointers emit a bright laser beam making them a good choice for astronomy.
3) At 95mW – 150mW, the green beam is even brighter offering extreme brightness, visibility and distance.
4) As you increase in power output, the laser beam will become brighter and more solid in color. The best suggestions if you are looking for an astronomy laser is to purchase something you are comfortable with paying.
5) SKYlasers offers power adjustable lasers where you can adjust the power output between a high-power and low-power setting.
Warning
Do not point any laser pointer devices at any flying aircrafts in the sky; it is a very serious offense in most countries.
About the Author
Learn more about SKYlasers laser pointer or more specifically, our high power green laser pointers.
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Pointer,Wireless Laser,Bk $70.99 POINTER,WIRELESS LASER,BK |
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Pointer,Pen,Laser,Srbe $35.99 POINTER,PEN,LASER,SVBE |
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Wireless Presenter With Laser Pointer $59.99 Wireless Presenter With Laser Pointer |
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Laser Pointer And Telescopic Pointer $9.99 Great for conference and presentation use. Features 2 modes � laser beam and white LED light. 2 control buttons – one for laser pointer and the other for LED light. Doubles as a steel telescopic pointer. Powered by 3 button cells (included). Compact and lightweight. |
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Green Light Laser Pointer 500mW $73.68 Green Light Laser Pointer 500mW |
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Silver 50mW Green Laser Pointer $19.99 Silver 50mW Green Laser Pointer |
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2.4GHZ wireless RC laser pointer presenter with mouse $22 laser pointer presenter with mouse |
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New 50 mw Green Beam Laser pointer $9.47 50mw,LASER POINTER |
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New 30 mw Green Beam Laser pointer $8.74 30mw,laser pointer |
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New 100 mw Green Beam Laser pointer $14.74 100mw,LASER POINTER |
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Quartet Metal Laser Pointer $23.99 0% 1 Each 1500 ft 1500 ft Maximum 2 x AAA 5.25″ Length Metal Laser Pointer 2 x AAA Batteries Class 3A Pinpoint the details of your graphic presentation with this laser pointer. Laser pointer directs a bright red dot on any medium that is visible under all interior lighting conditions. Nonslip design features a metal barrel and gold-color steel pocket clip. Class 3A laser pointer projects up to 500 yards and runs on two AAA batteries (included). ACCO Brands Corporation Black Laser Pointer MP1100Q Metal Metal Laser Pointer No Pocket Clip Presentation Quartet Steel www.acco.com |
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Quartet Keychain Laser Pointer $12.99 0% 1 Each 1500 ft 1500 ft Maximum 2 Keychain Laser Pointer 2 x LR44 Batteries Class 3A Key chain laser pointer projects a brilliant red laser dot to highlight the details of any presentation. Projection distance is up to 500 yards. Casing is made from black, high-impact plastic. Laser pointer includes a removable key chain and two LR44 batteries. ACCO Brands Corporation Black Key Chain – Removable Keychain Laser Pointer Laser Pointer MP600Q No Plastic Quartet www.acco.com |
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Coast Laser Pointer – COSLL7300 $13.57 MPN #COSLL7300. Coast Laser Pointer. Most Flashlights products are available for in-store pickup from Advance Auto Parts. |
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Quartet Comfort Laser Pointer $32.99 0% 1 Each 1500 ft 1500 ft Maximum 2 x AAA Comfort Laser Pointer 2 x AAA Batteries Class 3A Laser pointer projects a brilliant red dot onto any medium, including high lumen overhead, video and multimedia projections. Design features a rubberized cushion grip and a handy pocket clip. Contour comfort laser pointer operates on two AAA batteries (included). ACCO Brands Corporation Blue Comfort Comfort Laser Pointer Cushioned Grip Laser Pointer MP2700BQ Metal No Pocket Clip Presentation Quartet www.acco.com |
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Light Module w/Laser Pointer $73.99 AVerVision130/300i LED Light Module w/Laser Pointer (back clip) |
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Trixie Laser Pointer – Laser pointer $3.49 This nifty hi-tech Trixie toy should keep your cat happy for hours chasing the dancing red laser dot wherever it twists and turns. The ultimate playful experience! Colour of item may differ from displayed illustration. Note for correct use of the Trixie Laser Pointer Playing for long periods of time with an intangible toy does not make for long-lasting fun. To avoid any frustration the FroliCat Bolt Laser Cat Toy should not be left running for such long periods of time. Treats or an extra physical toy (e.g. a dangler pole toy ball or mouse toy) should be provided now and then. This will increase your kitty´s chance of success and ensure a more enjoyable experience chasing after the little red dot. Warning Avoid pointing the laser light towards eyes as this can cause permanent damage. Hazard class level 2 The accessible laser radiation is only within the visible spectrum range [400 nm - 700 nm]. Brief exposure (up to 0.25 sec) is not harmful to the eyes. 3 Batteries included What´s this? |
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CSI Airsoft Gear Series Rail Laser Pointer $7.95 CSI Airsoft Gear Series Rail Laser Pointer |
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Mini Bluetooth keyboard with touchpad and laser pointer UKB-100-BT $37.11 Mini Bluetooth keyboard with touchpad and laser pointer UKB-100-BT |
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Pen Style Green Laser Pointer 5mW – Black $7.99 Pen Style Green Laser Pointer 5mW – Black |
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Pen Style Green Laser Pointer 25mW – Black $13.99 Pen Style Green Laser Pointer 25mW – Black |
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5mW 405nm blue violet laser pointer/UV laser pointer/wholesale purple laser pointer pen FREE SHIPPING $115.97 blue violet laser pointer pen/ purple laser pointer Max Output power: 5mW (Class III) Wave length: 405nm. FREE SHIPPING |
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Vernier Laser Pointer $23.99 2 x AAA Laser Pointer 2 x AAA Batteries This Class IIIa (<5 mW) laser pointer can be used with the Vernier Photogate to produce a gate that is wider than the normal 7.5 cm spacing, making it possible to measure the speed of an automobile or of a person running. The laser case is made of aircraft aluminum, and it uses two AAA batteries (included). The wavelength of the light is 650 nm. Aluminum LASER Laser Pointer Vernier Vernier Software & Technology www.vernier.com |
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Red Laser Pointer $9.99 Yes, we know – it’s just a Red Laser Pointer. But hey they can still be fun and this one is a great deal. Use as a chase toy for your dog or cat (or heck, any animal that will run after it for that matter). Of course, use it for presentations and general stuff as well. We also offer a very nice Green Laser Pointer in our catalog. Perfect for skypointing and visible in dark conditions. The Red Laser Pointer also has these great features. |
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Tiny Laser Pointer $5.99 Features 2 modes � laser beam and white LED light. 2 control buttons � one for laser pointer and the other for LED light. Compact and lightweight. Great for emergency. Comes with a key ring. |
Laser Flashlight Hack!