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Green Laser Telescope
What pen laser mw and color would best penetrate into space from Earth?
In this video at ....http://www.metacafe.com/watch/2225704/make_a_simple_laser_communicator/ ..............the person makes a laser communicator. It works well and is known in science already.
My question is, if a person wanted to send messages into space for fun. (much like websites www.talk2ets.com & sentforever.com). What pen laser would get the best distance on a clear night? Also what mw power would be needed?
These pen lasers are often used by astronomers on their telescopes, so I imagine they got some distance...especially the green ones.
thanks.
Those green laser pens usually have a max distance of 1/4 mile (0.35 KM). One boasts a range of 10,000 ft.or about 2 miles (see links below). It would depend a lot on atmospheric conditions and the pen's capabilities. However, NO pen is capable of reaching anything beyond earth's atmosphere, even on a clear night.
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Meade Green Laser Pointer for Telescope |  |
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US $76.74 | 4d 17h 42m |
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Sporting Power 532nm Green Telescope Laser DOT Sight w Flashlight Torch | |
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US $18.67 | 13d 5h 32m |
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New JG-016 Sighting Telescope Rifle Scope Handgun Aim Sight Green Laser | |
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US $37.04 | 11h 37m |
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Orion SkyLine Green Laser Pointer + Telescope Bracket | |
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US $106.95 | 26d 21h 46m |
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532nm Green Dot Laser Sight Telescope+2 mounts rail adjus | |
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US $45.99 | 5d 14h 38m |
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Sporting Power 532nm Green Telescope Laser DOT Sight w free Flashlight Torch | |
0 Bid | US $19.98 | 1d 7h 14m |
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Orion SkyLine Deluxe Green Laser Pointer & Telescope Bracket $99.99 Mount a green laser pointer on your telescope for use as a finder scope. No more peering through a tiny lens; laser beam shows exactly where your telescope is aimed. Includes SkyLine Deluxe Green Laser Pointer, On/off button collar with thumbscrew, and dual-ring ABS dovetail bracket with spring-loaded X-Y adjustment. Compatible with Orion dovetail finder scope bases. Two AAA batteries included. |
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Orion SkyLine Deluxe Laser Pointer-to-Telescope Bracket $29.99 Now you can use the SkyLine Green Laser Pointer (GLP) to aim your telescope! This dual-ring ABS bracket holds the GLP and mounts like a standard finder scope. The bracket's dovetail foot fits the finder scope base of most Orion telescopes, as well as our dovetail mounting bases. The spring-loaded X-Y adjustment thumbscrews enable quick alignment of the GLP with the telescope. The SkyLine GLP makes pointing any telescope super easy. The green beam shows exactly where your telescope is aimed. No need to crouch in odd positions to peer through a standard finder scope! Bracket includes an On/Off thumbscrew collar for the GLP, which allows continuous On functionality while you align on your target object. SkyLine GLP sold separately. |
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Telescope For Wood Gyms - Green $15.99 Green telescope for wood gyms. Includes mounting hardware for 4x4 or 2x4 construction. |
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Green Bank Telescope $71.7 High Quality Content by WIKIPEDIA articles The Robert C. Byrd Green Bank Telescope (GBT) is the worlds largest fully steerable radio telescope and the worlds largest landbased movable structure. It is part of the National Radio Astronomy Observatory (NRAO) site at Green Bank, West Virginia, USA. The telescope honors the name of the late Senator Robert C. Byrd. Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 100 Publication Date: 2010/12/22 Language: English Dimensions: 6.00 x 9.02 x 0.24 inches |
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KidWise Green/ Yellow Telescope $33.24 This green and yellow telescope from KidWise helps to stimulate a young child's mind. This telescope features a durable plastic construction and attaches to wooden playsets for hours of fun.Brand: KidWiseColors: Green/yellow Attaches to wooden playsetsRecommended for ages 5 years and olderWeight: 2 pounds Materials: PlasticDimensions: 4.5 inches high x 11 inches wide x 4.5 inches deepModel: AE915-304 |
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Gorilla Playsets 070001G Telescope Green $26.72 This novelty telescope is designed for use with any of the fun and exciting Gorilla Playset playground systems. The durable polyethylene design is Color: your choice of green blue or yellow. All the hardware you need to install it is included. P |
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Telescope $19.99 Telescope - Masterprint |
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Gorilla Playsets Telescope $24.95 This novelty telescope is designed for use with any of the fun and exciting Gorilla Playset playground systems. The durable polyethylene design is available in your choice of green, blue, or yellow. All the hardware you need to install it is included. |
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Play telescope - Pack of 24 $36.29 The play telescope is a world of exploration fun! This toy is made of plastic and is red, green, orange with black trim. Comes packaged on a blister card with hanging hole. Measures 6 1/2", with a 3/4" eye opening and 1 1/2" lens. Not recommended for children under 3. Dimensions:. Length: 11. Height: 11. Width: 11 |
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Play telescope - Pack of 96 $88.45 The play telescope is a world of exploration fun! This toy is made of plastic and is red, green, orange with black trim. Comes packaged on a blister card with hanging hole. Measures 6 1/2", with a 3/4" eye opening and 1 1/2" lens. Not recommended for children under 3. Dimensions:. Length: 17. Height: 17. Width: 17 |
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Play telescope - Pack of 48 $54.43 The play telescope is a world of exploration fun! This toy is made of plastic and is red, green, orange with black trim. Comes packaged on a blister card with hanging hole. Measures 6 1/2", with a 3/4" eye opening and 1 1/2" lens. Not recommended for children under 3. Dimensions:. Length: 14. Height: 14. Width: 14 |
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Play telescope - Pack of 72 $66.34 The play telescope is a world of exploration fun! This toy is made of plastic and is red, green, orange with black trim. Comes packaged on a blister card with hanging hole. Measures 6 1/2", with a 3/4" eye opening and 1 1/2" lens. Not recommended for children under 3. Dimensions:. Length: 16. Height: 16. Width: 16 |
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Play telescope Pack of 24 $46.66 The play telescope is a world of exploration fun This toy is made of plastic and is red green orange with black trim. Comes packaged on a blister card with hanging hole. Measures 6 1/2 with a 3/4 eye opening and 1 1/2 lens. Not recommended for children under 3. Dimensions:. Length: 11. Height: 11. Width: 11 |
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Play telescope Pack of 48 $69.98 The play telescope is a world of exploration fun This toy is made of plastic and is red green orange with black trim. Comes packaged on a blister card with hanging hole. Measures 6 1/2 with a 3/4 eye opening and 1 1/2 lens. Not recommended for children under 3. Dimensions:. Length: 14. Height: 14. Width: 14 |
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Play telescope Pack of 72 $85.29 The play telescope is a world of exploration fun This toy is made of plastic and is red green orange with black trim. Comes packaged on a blister card with hanging hole. Measures 6 1/2 with a 3/4 eye opening and 1 1/2 lens. Not recommended for children under 3. Dimensions:. Length: 16. Height: 16. Width: 16 |
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Play telescope Pack of 96 $113.72 The play telescope is a world of exploration fun This toy is made of plastic and is red green orange with black trim. Comes packaged on a blister card with hanging hole. Measures 6 1/2 with a 3/4 eye opening and 1 1/2 lens. Not recommended for children under 3. Dimensions:. Length: 17. Height: 17. Width: 17 |
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Gorilla Playsets 070001Y Telescope Yellow $26.72 This novelty telescope is designed for use with any of the fun and exciting Gorilla Playset playground systems. The durable polyethylene design is Color: your choice of green blue or yellow. All the hardware you need to install it is included. P |
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TELESCOPES.COM (Zhumell Green Astronomical Laser Pointer)
I have a green laser pointer that uses 3AAA batteries, I want to run it on a 4.5 adapter, will it work?
The battery compartment negative faces laser end, positive toward back end spring. If I remove spring, drill hole, install input plug ( negative to tip, positive to frame) soldier wires from battery pack to input plug, insert plug from 1.5 to 12V adapter, set at 4.5V, will it work? It also has a red and white flashlight which comes on with left or right twist at front, but all power provided from rear battery pack. Laser is rated as 5mW, DC adapter says maximum is 300mA will it work??? if so, how to do it correctly? This laser is being used on a 16" Dob Telescope as a finder and eats 3AAA batteries in 1/2 hour. Laser has a one minute on cycle, repress button for another minute, etc. 30 minutes, batteries drained for laser, but flashlights still operate. I think when batteries reach 4.0V, laser is non functional? Thanks, Vance
It will typically work on adapters that have good voltage regulation. Cheap dumb adapters have high voltage at low load and normal voltage at rated load. A dumb 300mA adapter could give 4.5V at full load but 5V or higher when load is only 150mA or less. A cheap adapter with poor voltage regulation could fry your laser pointer.
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