>In addition, I think anyone who does this will be
>surprised at how much the laser beam spreads in getting to a target 150'
>away. It's certainly *not* the little spot it is at 20-40 feet. Remember,
>we're not talking research quality optics in these little laser pointers.
>I'll bet the laser I used gave a circle a bit larger than 2" in diameter
>at 150', more concentrated at the center, of course.
>
> Regards,
>
> Greg Hartke
> Sykesville, MD
------------------------------

Beam spread is easy to get rid of. Just take a small lens and mount it on the end
of a cardboard tube which slides over the laser pointer. Slide the tube back
and forth until the beam emerges parallel. Use a spotting scope to obtain the minimum
diameter spot at the distance you wish to use the laser and tape the slider in place.


Chris Frye
Silver Spring, MD

View index by [date] [author] [subject]
Previous message: Re: [M]: Software Recommendation, please..., Paul Goelz
Next message: RE: [M]: Major Malfunction, Gary J. Ferdinand
Previous message in thread: RE: [M]: Lx200 collimation, B. S. Jones