ATN Night Arrow4-2IA

ATN Night Arrow4-2IA
With the ATN Night Arrow 4-2IA ATN deliver a potent procuct, especially for the discerning marksman or cunning hunter. The viewer provides you with excellent observation, spotting and target performance so you will hardly ever miss a target. Automatic Brightness Control (ABC) automatically adjusts the brightness of the image so the viewer offers the best picture quality in all lighting conditions. Compared to the ATN Night Arrow 4-2I, this visor has a higher resolution and therefore a clearer picture. ABC also protects the light-sensitive parts in the tube against over-exposure. If the visor is extremely exposed, then the viewer is automatically turned off to prevent damage to the system.

Arrow on target
The Night Arrow is a series of several models in different price ranges. Equipped with the best optical instruments and tubes and offering excellent performance, this series is one of the best available on the commercial market. The viewers are battery-powered. A full battery lasts 30 hours, and, using the Low Battery Indicator, the viewer warns you when it is time to change the battery.

Gen 2IA Technology
In a night vision the image intensification tube is the heart and this is no different in the Night Arrow 4-2IA. The difference between a first and a second generation unit is mainly the addition of a micro-channel plate, or MCP. The MCP works as an electron amplifier and is placed directly behind the photocathode. A photocathode is a negatively charged electrode in a night vision and has a photosensitive coating. From the moment light strikes it, the absorbed energy generates an emission of electrons. This process is caused by a photoelectric effect. Simply put, the MCP gives the electrons an extra push so that the second generation night vision provides a brighter and sharper image.

Click Value or MOA
The vertical height adjustment ensures that the target in the viewer coincides with the spot where the bullet strikes. The flight of the bullet is affected by gravity in an arc orbit effect, the rifle scope follows a straight line. To compensate for this effect, the viewer has a turning wheel with which you can adjust the height. Usually, the viewer is set to a certain distance, e.g. 25m. The adjustment wheel goes with clicks, so the adjustment per click is indicated as click value. The movement of the target point caused by one click of the dial is expressed in minutes (of degrees). A minute is 1/60th of a degree. In English this is called "Minute of Angle" or MOA. On a viewer it is often indicated what one click means for that specific model: 1/4 MOA, 1/8 MOA, so 1/240th or 1/480th of a degree.

Do the math
The distance to your goal is the radius of a vertical circle. With a distance of 10m, the circumference of a circle is 628m (2 x pi x r). One degree displacement is 628:360 = 1.74m, one minute is 1.74:60 = 0.029m or 2.9cm. Divide this number by the amount of MOA, e.g. 1/4, and you have the vertical displacement of the target per click.

Specifications

• Gen. 2IA Night Vision Technology
• Resolution 40-50lp/mm
  
• IR450 detachable infrared beamer for use in total darkness
  
• Dioptre adjustment from -4 to 6
  
• 4x Zoom
  
• Power supply: 1x 1.5V AA Battery
  
• 1/4 MOA
  
• Functional in temperatures from -40 to +50°C
  
• Temperature resistant from -50 to +70°C
  
• Delivery time: up to 4 weeks
  
• 100% Waterproof
  
• Proshield lens coating
  
• Red on Green crosshair
• Includes batteries, carrying bag, lens cap and cleaning cloth