Wednesday, December 7, 2011

ATN Night Shadow-4 Gen 4, 5x Night Vision Bi-ocular

ATN Night Shadow-4 Gen 4, 5x Night Vision Bi-ocular Review



ATN Night Shadow-4 Gen 4, 5x Night Vision Bi-ocular Feature

  • Cutting-edge night vision binoculars ideal for law enforcement or military applications
  • 4th Generation image intensifier tubes provide superior image quality in low-light situations
  • "Smart" technology with computerized proximity sensor and digital controls
  • Super-fast 5x objective lens; multicoated all-glass optics
  • This item is prohibited from export outside the US
See clearly even in total blackness with the ATN Night Shadow 4 night vision binoculars. The Night Shadow 4 is made using ATN's 4th Generation Autogated/Filmless image intensifier tubes (IITs), which improve operational effectiveness in dynamic nighttime lighting conditions such as urban areas after sunset. The Filmless micro-channel provides a higher signal-to-noise ratio than standard Generation 3 tubes, resulting in better image quality under low-light conditions. The Autogated power supply further improves image resolution under high light conditions while reducing the "halo" effect from bright light sources. Units with 4th Generation Autogated/Filmless IITs have a typical resolution of 64 to 72 lp/mm and a minimum signal-to-noise ratio of 24.

The unit is also equipped with ATN's cutting-edge "Smart" technology, which consists of a computerized proximity sensor, digital controls, and a long-range infrared illuminator. The proximity sensor will automatically turn the unit on and off when it's brought to the viewing position, helping save your battery life and the life of the unit itself. The digital controls, meanwhile, allow you to activate or deactivate all of the features of the Night Shadow 4 with a simple push of a button. And thanks to the powerful infrared illuminator, you can see even in total darkness with outstanding clarity.

With 5x magnification, the Night Shadow 4 is an ideal choice for law enforcement or military users. Other details include multicoated all-glass optics; a super-fast 5x objective lens; a waterproof, fog-resistant housing; and a camera-adaptable design. The Night Shadow 4 carries a limited two-year warranty.



The Night Shadow 4 offers superior image quality in low-light conditions.
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, black-and-white or green-hued, amplified re-creation of the scene you were observing.

All night vision devices need some light to amplify. That's why all ATN night vision devices have a built-in infrared illuminator (IRI). An IRI essentially throws out a beam of infrared light that is near invisible to the naked eye, but your night vision device can see it. This allows you to use your scope even in total darkness. The IRI works like a flashlight, which is why the distance you can see with it is limited. Although ATN IRIs extend out to 100 yards, the IRI may cover only 40 to 60 percent of the viewing area.

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.



The Night Shadow 4 is ideally suited to law enforcement or military applications.

Specifications

  • Total darkness IR system: Yes
  • SMART technology: Yes
  • Multipurpose system: No
  • IIT generation: 4
  • Resolution: 64-72 lp/mm
  • Magnification: 5x
  • Lens system: F1.7, 90mm
  • Proshield lens coating: Yes
  • Field of view: 9 degrees
  • Range of focus: 2.5m to infinity
  • Diopter adjustment: -5 to +5
  • Controls: Digital
  • Automatic brightness control: Yes
  • Bright light cutoff: Yes
  • Automatic shutoff system: Yes
  • Infrared illuminator: Yes (focusing)
  • IR indicator: Yes (LED)
  • Low battery indicator: Yes (LED)
  • Power supply: Two 3-volt CR123A batteries
  • Battery life: 50 hours
  • Weather-resistant: Yes
  • Dimensions: 9 x 5 x 3 inches (W x H x D)
  • Weight: 2.5 pounds
  • Warranty: 2 years
ATN Night Shadow-4 Night Vision Bi-ocular Gen 4 with built-in exclusive "Smart" Technology is a highly professional device. Unit has state of the art automatic On/Off feature - Proximity sensor turns bi-oculars ON when brought into the viewing position; 5x magnification with a built in long range IR Illuminator excellent choice for camping, boating, nature study, or law enforcement; all digital adjustments - auto brightness and gain control, bright light protection. Specialized multicoated optics provide extreme clarity in low-light situations. Unit can be converted into 6x binocular with optional ATN Doubler (not included). Water and fog resistant. Requires two 3V lithium batteries, included. ATN Corp manufactures and distributes the widest array of Night Vision and high quality optics in the world. We are a sales and market leader in the US. Unsurpassed customer service on both our website and 800#, our technicians are the most knowledgeable in the world. We manufacture for the US Military, law enforcement, the FBI and the US Department of Homeland Security.


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