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I was wondering which of the two lasers would be brighter the 2000 mw 445nm or the 300 mw 532 nm? Thanks
They won't be worlds apart, but in terms of brightness either of them will have a perfectly visible beam if they're working properly. If it's for star pointing in the night sky both will be "too bright" and the wrong colour, as they remove night vision.
I'd disagree, viewing the beam of anything short of the Death Star won't really ruin your night vision, but yeah just DO NOT point it at some physical object close to you. The dot will ruin it, and require some time to re-adjust.
hm what nightvision trencheel? if outside i dont see how they would destroy night vision, you could point a 5w blue and it would be ok no ?
The beam itself likely WONT affect your night vision though because its much less bright than the dot and its only a narrow beam so it doesn't fill your vision.
Facts are facts. The beam of a sufficiently bright green or blue will temporarily disable night vision. When I was playing with lasers at my favourite dark sky location a few months ago my green and blue did just that. It's to do with the chemical changes in your eye that happens when they adapt to the dark (as well as the basics like dilation) and the effects green or blue light have on the eye in its dark adapted state.
A 5mW blue would hardly be visible anyway. A 2W blue has a very bright beam.
Don't forget, true dark skies are very hard to find nowadays. I have to travel hours to get to an almost pitch black sky, and to many who live in large cities and conurbations it might not even be practically possible at all to get to a dark sky.
Have you tried it for yourself or are you guessing? The beam causes the air around it to glow unless it's a PERFECTLY still and dry night. And yes, the beam alone IS bright enough to ruin true dark night vision.
Have you tried it for yourself or are you guessing? The beam causes the air around it to glow unless it's a PERFECTLY still and dry night. And yes, the beam alone IS bright enough to ruin true dark night vision.