[Wavytone]

Yes it will. There's another problem too - when aligned properly with your telescope, if the laser is on while you look through the scope you'll see the backscatter of the beam as green finger sticking into the field of view, which is more than a tad annoying if you're looking for something faint. The result is you need to switch the darned thing off while you use the scope.

While lasers are great for pointing things out to a crowd, they're not great as finders on a scope - IMHO a red-dot finder or Telrad are better, especially if the dot blinks off and on, you can see much fainter background stars etc in the vicinity of the dot. And you can leave them switched on too while you use the scope. Even the old-style 50 X 8 finder scope is better.