The green laser becomes incredible visible in a misty night! But, the bad thing is that the beam can't reach big distances.
The 250mW red laser become much visible too, but hard to see outside the laser place.
In the next misty night, I'll do this, turn the laser on and let it pointing to the sky, then, go away to another place and look at the beam.
I've done this one time, and the result was wonderfull, I ended with a great tonture because, the end of the beam will ever be in over your head, tricking our mind!
I done this last night, was a quite clear night and no much particles in the air, so the beam was very dim than the other nights, but since was minus particles in the air, the beam reach a big distance, enough to be visible in the heavens.
I turned my laser on and leave it pointing to the sky and I walk away from it.
Since the earth is round, it makes the beam ever be in the same place, in the center of the sky, no matter how away you walk. The end of the beam will appear in the same place, this makes a type of illusion in the brain because the beam seems to make a curve, after a while looking at the beam, I started to get dizziness.
Unfortunately, no photos will capture the illusion.