1. BRIEF DESCRIPTION
1.1.Overview
NVS-33 is an afocal night vision attachment to a daytime weapon scope designed for precise aiming in darkness.
The device is equipped with a high-quality generation 3 electro-optical image intensifier tube that amplifies light in the visible and IR spectrum providing for up to a 400- 700 m effective observation range at low light.
Observation range depends on the characteristics of the daytime scope NVS-33 is attached to and actual observation conditions, such as available light, atmosphere transparency and target reflectivity. The observation range increases by brighter light, at moony night, or if the object is positioned against a light background, such as snow or grass. The range decreases at lower light, low atmosphere transparency, or if the object is positioned against dark background, such as plough-land, desert, stems of trees, etc.
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