[AZ-Observing] Re: No lasers at Bryce Canyon

  • From: "Steven Dodder" <sdodder@xxxxxxxxxxx>
  • To: az-observing@xxxxxxxxxxxxx
  • Date: Wed, 05 Jul 2006 18:08:53 +0000

>Use a piece of unetched double sided circuit board. Cut a small round
>piece about the diameter of your batteries. The copper on one side is
>isolated from the other side by the board material between them.
>Solder a low value pot to two wires, then solder one wire to each
>side of the board. Put the board between two batteries in series or
>between a battery and a battery terminal in the laser.
>Adjust the resistance with the pot to control the brightness.
>Joe Larkin

Or, how about using a laser that's appropriate for the dark skies of the 

Steve and Rosie Dodder
Visit my web site at http://www.stargazing.net/Astroman

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