Thanks to all for advice. I was hoping that technology had progressed to the point that keeping the laser warm (just awkward fishing it out under three or four layers of clothing) or buying expensive batteries weren't the only options. Josh shared some information about Optotronics products (thanks Josh); here's the link: http://www.optotronics.com/green-laser-pointers.php. I'm leaning toward trying out the 30mW model. I'm afraid that the 175mW model might be a bit too conspicuous. ;-) Has anyone used Optotronics products? -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Larry Holmes Sent: Monday, January 21, 2013 3:09 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] laser pointers Kim, I have a picture of, I believe, a megawatt (I could be way off, maybe Charlie remembers) laser that was used, in conjunction with2 very high power zenon lamps, to try to light up the space shuttle. Only problem is that it is on my IPad, and unless you have some apple equipment, I would not know how to send it to you. 73