This is one clever woman. Be warned. If you love rats, the 2nd video is not for you.
Snypercat has been working on a way to hunt farm rats at night. There is no place for rats on a farm, they spread disease eat the food for your animals and will get you shut down if you plan on selling what you grow or raise.
Snypercat knows that the best time to hunt rats is when they are most active which is at night. Only problem is us humans can't see very well at night and if normal lighting was used it would scare away the rats.
Her solution was to attach a Sony night vision camcorder to the scope of a gun. A large IR illuminator is then needed since she will be a long way from the prey she is hunting.
The large wide spread type of IR illuminator worked not bad but since they are normally used for night vision cameras it has a very wide beam of light.
She found that the optimal solution was a IR flashlight since it can be focused to a tight beam just where it is needed which might be a few hundred feet away.