Why do astronomers like green laser pointers? [closed]
Why do astronomers like green laser pointers? [closed]
Green lasers are easily visible at powers that are not dangerous. A red or blue laser would require much more power to be as visible as green.
Do green laser pointers preserve or ruin night vision? - Reddit
It's that brilliant spot of green light that ruins night vision. I use one as a finder, and as long as it's pointed at the sky, all is well.
Green Laser Pointers for Astronomy - How-To - Articles
What you're seeing when you use a green laser pointer is the concentrated beam of light reflected off of dust and aerosol particles suspended in ...
Some Pointers on Using Laser Pointers - Sky & Telescope
This is a typical amateur-astronomer's green laser pointer, shown with a simulated beam. It emits an intense, narrow beam of light that is visible for ...
Laser Pointers and the Law - Beginners Forum (No Astrophotography)
But 5 mW is extremely feeble in absolute terms, and the amount of light scattered by any given parcel of air is minuscule. The only reason that ...
A green laser pointer - why every astronomer should have one
close to the person doing the pointing could see the beam. From light ... Practice showed that the use of these weak lasers as star-pointers is very.
Astronomy Laser - Getting Started Equipment Help and Advice
At a real dark site (which you have mentioned), I would recommend skipping "gun" laser sights with the bright green beam (which Louis has ...
5mW Green Laser Pointer for Astronomy
To be explicit here, this means you can't legally use them outside. Now you may want to adopt a "no blood, no foul" attitude, and that's fine for you. But just ...
Green Lasers: A Hidden Danger - Sky & Telescope
Like many of you, I never head off to a star party without my trusty green laser pointer close at hand. These great and increasingly inexpensive gadgets ...
Laser pointer debate | Astronomy.com
An accompanying photo showing a green laser flash in an airplane cockpit prompted a comment from Fred Hoffman of Fort Bliss, Texas. “As an ...
Safety of Green Lasers Pointers - Raleigh Astronomy Club
The laser pointers commonly used by amateur astronomers are green, continuous wave lasers emitting light centered at 532nm wavelength. They are ...
Astro Note A2 – Laser Pointers - Astronomical League
Introduction – The Astronomical League advocates the safe and responsible use of green laser pointers. Lasers are a valuable tool in astronomy for ...
Can a laser pointer ruin a long exposure photo?
Can laser pointers be used? Yes and no. If you are attending a Star Party hosted for astronomers and astrophotographers, then laser pointers ...
Are green <5mW laser pointers legal to use in New York City?
What is unclear about that? The intended use (astronomy) or the power of the device is irrelevant. The only thing that matters is if the beam ...
green light is scattered away from the beam direction by air molecules and dust particles (so you can see the beam from the side); the eye is particularly ...
Such pointers, particularly in the green-light output range, are used as astronomical object pointers for teaching purposes. ... Green laser pointers can also be ...
Green Laser Ban - What Can You Do? - IceInSpace
As an education tool with public groups and at star parties. The green laser pointers are used to point out constellations, stars and other celestial objects ...
Tips for star pointing - Laser Pointer Safety
This unretouched photo shows how a beam outdoors can seem to end after only a few hundred meters. This is a potentially dangerous illusion, as described here.
Green laser pointers for visual astronomy: how much power is ...
Green laser pointers with output powers below 5 mW (laser classes American National Standards Institute 3a or International Electrotechnical Commission 3R) ...
Observing - Some Pointers on the Use of Laser Pointers
This is a typical amateur-astronomer's green laser pointer, shown with a simulated beam. The 5-milliwatt laser is.