I can't part with my optical mouse but it is the kind that shines bright red out of the sides like a UFO lander. I noticed the dazzle from 60 ft away at 5-Mile Isle last week. It's the Logitech M-BJ58. I easily modified it in just a couple minutes. I removed one screw from the bottom and lifted off the top. The offender is a large clear plastic cube in the center of the PWB. I laid a 1" piece of 3/4" black electrical tape over the top so it covered both sides of the cube. Ready for testing! Jack Jones Saguaro Astronomy Club Public Events Phoenix AZ spicastar@xxxxxxxxxxxxxxx -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.