ATN PS40-WPT Gen WPT, Day/Night Vision Rifle System

The PS40-WPT is made using ATN's white phosphor technology, which better detects the shades of intensity between white and black, resulting in improved contrast and depth perception. In fact, studies show that nighttime scenes appear remarkably more natural in black and white versus green, because black and white provides clearer information about contrast, shapes, and shadows. The scope also includes multicoated all-glass optics and the latest in image intensifier tube technology, helping it produce outstanding resolution. And mounting the scope couldn't be easier thanks to the quick-release mount and optional mounting add-ons, which include 7/8-inch weaver mount and a separate scope mounting system. Other details include a fast catadioptic front lens system, a large 40 mm output window, and an automatic brightness control. The PS40-WPT carries a two-year warranty.

How Night Vision Works
All ATN night vision devices consist of several main parts: an objective lens, an eyepiece, a power supply, and an image intensifier tube (photocathode tube). The devices function by gathering existing ambient light, such as starlight, moonlight, or infrared light, through the front lens. This light, which is made up of photons, goes into the photocathode tube and is converted into electrons. Next, the device amplifies the electrons to a much greater number through an electrical and chemical process, and then hurls them against a phosphorous screen that changes them back into visible light. The image will appear through the eyepiece as a clear, green-hued, amplified re-creation of the scene you were observing.

How Far Can You See?
There are many different variables that can affect the distance you 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 (commonly called "recognition range"), or are you just trying to see if something is there? Maybe you will see just the movement, but won't be able to determine 100 percent who are what it is. This is called "detection range." Another variable is lighting conditions. The more ambient light you have, 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 than if it's cloudy and overcast. ATN typically states that you can tell the difference between a male and 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.

Specifications:

• Total darkness IR system: No
• SMART technology: No
• IIT generation: WPT
• Resolution: 60-74 lp/mm
• Magnification: 1x
• Lens system: F1.44, 80mm
• Proshield lens coating: Yes
• Field of view: 12 degrees
• Exit pupil: 40mm
• Range of focus: 10m to infinity
• Diopter adjustment: No
• Controls: Direct
• Remote control: Yes
• Automatic brightness control: Yes
• Bright light cutoff: Yes
• Infrared illuminator: No
• IR indicator: No
• Low battery indicator: Yes
• Power supply: One 1.5-volt AA battery or one 3-volt CR123A battery
• Battery life: 50 hours (3 volt); 25 hours (1.5 volt)
• Reticle system: No
• Windage and elevation adjustment: No
• Waterproof: Yes
• Complies with MIL-STD-810: Yes
• Dimensions: 7 by 3.4 by 3.3 inches (W x H x D)
• Weight: 1.85 pounds
• Warranty: 2 years