Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

green laser pointer



I recently bought a green laser pointer to use as a pointer at
stargazes. I notice that when I turn it on and point it at a nearby
surface, I see two dots: the primary one and a dimmer "ghost" dot. I
have determined that the ghost dot is not an artifact on the lens and
it doesn't move when I wiggle the lens either. Of course, it's not a
problem for pointing to the sky, but it's rather annoying when pointing
to a solid surface. Any idea what it could be?

Cheers,
Joe Heafner