How to Select a Laser Pointer

I’m thinking about purchasing a green laser pointer and was wondering how to select one. I’ve seen several with different output powers, wavelengths, classes and visible distances. I plan to use it to point out constellations mainly from our light polluted neighborhood. Also, are the ones listed on ebay any good? Any comments and / or suggestions will be greatly appreciated. Thanks in advance, Paul

Paul:

There is a forum just for laser pointers, it might be best to go there.

Personally I do not own a laser pointer. Not long ago I was ready to buy one to show my wife around the night sky but she was against it. She said she learned more the old fashioned way, pointing finger and talking. She said that the laser was faster but it didn't make her think. She said she really learned how to find those stars again doing it the old fashioned way. I had to agree with her....

Anyway, if you do choose a laser pointer, make sure you buy one that is 5mw or less. It is illegal to sell or promote a laser over 5 mw as a pointer.

Jon

Paul,

If you want to use a laser as a learning tool for educating others- I got mine at Z-Bolt.
I don't know if they have one for astronomical pointer (one designed to remain on for a time without overheating), but perhaps they do.

Thanks to using one, my wife and I have turned a lot of people on to astronomy. It's incredible in that it helps new folks visualize the constellations while we point things out. I'm a believer for using them as a teaching aid. In fact, my wife with a green laser and binoculars has helped me quickly locate objects with our 10" dob during outreach programs.

Just remember to stay at or below 5mw or you're break'n the law.

Gerald

http://z-bolt.com/generic27.html?gclid=CLiQsO3g9okCFR9DggodwSAhWw

A planisphere is another great way to teach others the night sky. Very affordable. Runs for twenty five years or better before needing an upgrade.