Posted: 8/22/2009 9:49:21 PM EDT
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Lets say I bought one of the cheaper 5-700 dollar sights from ATN or someone.
If I were to mount a surefire with the IR filter, would it make it alot better + range? |
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Quoted:
Lets say I bought one of the cheaper 5-700 dollar sights from ATN or someone. If I were to mount a surefire with the IR filter, would it make it alot better + range? Kind of,,,,,,,,,, and not really. The gen-1 NV tubes peak response is about 650nm or so, which is a deep red visible color. If you have a flashlight that ONLY gives off 650nm light, you cannot see the light it casts very well (say, if you shine it on a wall only five feet away, in the dark) but you can very easily see the light if it is shined directly at you. This is why gen-1's are no good for tactical use––they require visible light to work well. Gen-2's peak at 800nm, which is well out of the range of human vision––you can look straight into an 800nm light, and never see a thing. Gen-3's peak at 900nm, even further out of range of human eyes. .....Gen-1's also suffer pincushion distortion, and suffer from spherical aberrations––which means you cannot get both the center zone and the edge of the view in focus at the same time. Using a more powerful light will let it see farther, but not clearer. (gen-1's use an electron invertor, which causes a loss of clarity and the focusing problems. Gen-2's and 3's avoid these problems by not using any image inversion inside the tube,,,,, and this is why gen-2 and gen-3 tubes are often interchangeable in the same NV scope body, where gen-1 tubes are not. The two types [gen-1 compared to the other two] require different optics). –––––– If you get a gen-1 to play with and want to get a better light, just go buy a cheapo generic flashlight with a smooth flood beam, cover the lens with tail-light repair tape and tape it to the NV scope. Animals do not seem to be very disturbed by red lights at night, so you can use it to observe four-legged critters (they seem far more concerned with the noise you make, or if you're upwind). But you're not going to be sneaking up on any humans with it, because gen-1 NV scopes require visible light to work. If you want to be "invisible", you MUST get at least a gen-2. ~ |