All Starlight scopes need some light to amplify. This means that if you were in complete darkness you could not see. Due to this we have a built in infra-red illuminator (IRI) on all of our scopes. Basically what an IRI does is throw out a beam of infra-red light that is near invisible to the naked eye but your NVD ca
n see it. This allows you to use your scope even in total darktness. The IRI works like a flashlight and the distance you can see with it will be limited. We do use the most powerful eye-safe illuminator on the market. This allows our IRI to extend out to 100 yards However, because of the power at a short distance the IRI may cover only 40-60% of the viewing area.There are many different variables that can affect the distance you can see with a Night Vision Device. First, what are you trying to see? Are you looking for another boat on the water or are you looking for a rabbit in the woods? The larger the object the easier it is to see. Plus, are you trying to see details (what we call recognition range) or are you just trying to see if something is there? Maybe you will just see the movement, but won’t be able to determine 100% who or what it is. This is called “detection range”. A second variable is lighting conditions. The more ambient light you have (starlight, moonlight, and infrared light) the better and further you will be able to see. You can always see further on a night where the moon and stars are out, then if it is cloudy and overcast. We typically state that you can tell the difference between a male and a female or a dog and a deer at about 75 to 100 yards. However, if you were looking across an open field and there was a half moon out you could see a barn or a house 500 yards away.
n see it. This allows you to use your scope even in total darktness. The IRI works like a flashlight and the distance you can see with it will be limited. We do use the most powerful eye-safe illuminator on the market. This allows our IRI to extend out to 100 yards However, because of the power at a short distance the IRI may cover only 40-60% of the viewing area.There are many different variables that can affect the distance you can see with a Night Vision Device. First, what are you trying to see? Are you looking for another boat on the water or are you looking for a rabbit in the woods? The larger the object the easier it is to see. Plus, are you trying to see details (what we call recognition range) or are you just trying to see if something is there? Maybe you will just see the movement, but won’t be able to determine 100% who or what it is. This is called “detection range”. A second variable is lighting conditions. The more ambient light you have (starlight, moonlight, and infrared light) the better and further you will be able to see. You can always see further on a night where the moon and stars are out, then if it is cloudy and overcast. We typically state that you can tell the difference between a male and a female or a dog and a deer at about 75 to 100 yards. However, if you were looking across an open field and there was a half moon out you could see a barn or a house 500 yards away. 
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