Showing posts with label night vision. Show all posts

Friday, December 16, 2011

Low Price Binocular - ATN Night Spirit-2 Gen 2+ Night Vision Multi Purpose System

ATN Night Spirit-2 Gen 2+ Night Vision Multi Purpose System

Product Description :

The ATN Night Spirit-2 is a lightweight yet rugged multi-purpose Night Vision system with a high-resolution 2nd Generation intensifier tube that delivers bright and sharp images in total darkness. The versatile unit can be hand-held or head-mounted for hands free use (with optional head gear or helmet mount) and is waterproof, making it a great choice for outdoors applications. With all-glass optics that are specially coated to absorb light and a integrated infrared illuminator for clear sight in total darkness, no conditions are too dark for effective ATN Night Spirit-2 use.

About 2nd Generation Nightvision:
Primarily used by law enforcement or for professional applications, 2nd Generation Nightvision provides a much brighter and sharper image than 1st Generation Nightvision can. This is primarily to the addition of a micro-channel plate, commonly referred to as a MCP, in the 2nd Generation system. The MCP works as an electron amplifier and is placed directly behind the photocathode. The MCP consists of millions of short parallel glass tubes. When the electrons pass through these short tubes, thousands more electrons are released. This extra process allows 2nd Generation units to amplify the light many more times than the 1st Generation counterpart for much greater image clarity.

Specifications:

Magnification: 3x
Lens System: F1.2, 50-millimeter
Proshield Lens Coating
Field of View: 18 degrees
Range of Focus: 3 meters to infinity
Diopter Adjustment: -5 to +5
Single switch knob operation
Camera/camcorder-adaptable
Automatic Brightness Control
Bright Light Cut-off
Infrared Illuminator
Indicators: IR, low battery (both in Field of View)
Power Supply: one 1.5-volt AA or one 3-volt CR123A type battery
Battery Life: 30 hours overall; 15 hours with infrared illuminator
Weather resistant construction
Operating Temperature: -40 to 50 degrees Celsius
Storage Temperature: -50 to 70 degrees Celsius
Dimensions: 8.2 by 2.9 by 2.4 inches / 210 by 75 by 60 millimeters
Weight: 1.4 pounds / 0.65 kilograms

2nd Generation Image Intensifier Tube:

Multi - Alkali photocathode
Resolution, lp/mm*: 40 to 45
Signal to Noise Ratio*: 12 to 20
Figure Of Merit: <1250
Mean Time Before Failure: 5,000 hours

* For more information visit this link (Amazon)

to buy this product from amazon, click here :

Friday, December 16, 2011 by أسامة · 0

Buy Binocular - ATN Gen CGT Night Arrow 4-CGT Night Vision Weapon Sight

ATN Gen CGT Night Arrow 4-CGT Night Vision Weapon Sight

Product Description ( amazon.com ):

The Night Arrow 4-CGT is a rugged night vision weapon sight that allows you to confidently observe your prey, acquire the target, and aim. As a result, the sight is an ideal choice for the demanding sports shooter or varmint hunter. The sight is outfitted with a "red on green" reticle system, with an illuminated red center crosshair that provides optimal contrast against the green night-vision background. The reticle makes it possible to identify and lock on targets even in complete darkness. The sight also offers an automatic brightness control (ABC) to protect the tube, along with a single knob for easy operation. And thanks to the rugged, nitrogen-sealed housing, the sight is water- and fog-resistant. The lightweight sight--which mounts to standard weaver rails--operates on a single AA battery and carries a limited 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, 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.

Specifications: