ATN Aries MK 410 Spartan 5.0x Night Vision Riflescope, 40 lp/mm Resolution, F:1.6, F108mm Lens System, 5m-infinity Focus Range, Red on Green Reticle

The ATN Aries MK 410 Spartan 5.0x Night Vision Riflescope combines high-powered magnification (5.0x), a highly efficient and robust f/1.0 objective and a premium 1st generation intensifier to produce amazing nighttime viewing possibilities. The MK 410's optical stack is highly refined; the lens elements are designed to deliver high levels of optical resolution with an enhanced level of light-throughput. These optical advancements ensure a sharper and clearer sight picture at all times, under all conditions. This Spartan is fitted with an ergonomic push-button activation system, a Weaver compatible mounting system and a powerful 450 mW IR illuminator for total darkness conditions.

There are many different variables that affect the distance that one can see with a night vision device, among them the object's size, the level of details being sought from the object and the conditions of observation. Night vision devices detect much further under a full moon and clear skies than they will under a new moon and cloudy skies. Many different formulas are used to determine the statistic of maximum viewing range and the method of calculation varies by manufacturer. The important factors to consider when evaluating any night vision device are the intensifier tube's generation, s/n ratio, level of magnification, specified resolution, along with the clarity & light transmission efficiency of the optical system.