Electro-Optics

NIGHT SENTRY Mk2

Modular Lightweight Monocular Night Vision System

The NIGHT SENTRY Mk2 is a modular, lightweight, ultimate performance Monocular Night Vision System designed for application above and below water by Frogmen, Clearance Divers, or Special Forces. Its monocular design permits independent use of each eye, removing the serious problem of dark adjustment when using dual eye Night Vision Goggles. It incorporates a Selected High Performance 3rd Gen or 2nd Gen 18mm Image Intensifier and a 25mm F/0.95 Objective Lens. It can also be weapons mounted using the Elcan Weapons Mount on most small arms.

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Technical Specifications

Mechanical Specifications

Overall Length	150mm (inc. eyeguard)
Maximum Height	110mm (inc. head mount clip)
Maximum Width	65mm
Weight	460 grs (without head harness)
Construction	Aluminium, hard black anodized with Black Teflon finish
Environment	MIL SPEC
Operational Depth	50 meters

Optical Specifications

Objective Lens	25mm F/0.95 Refractive
Field of View	40 degrees (in air)
Focus	30cm to Infinity
Ocular Lens	26.5mm
Ocular Focus	+/- 4 diopters
System Magnification	Unity
Range (Man-sized target)	150m (Starlight)

Electrical Specifications

Image Intensifier	18mm 2nd Gen / 18mm 3rd Gen
Tube Sensitivity	600µa/lm (2nd Gen) / 1,800µa/lm (3rd Gen)
Tube Gain	35,000 typical (2nd Gen) / 40,000 typical (3rd Gen)
Tube Resolution	60 lp/mm (2nd Gen) / 64 lp/mm (3rd Gen)
External Control	Rotary switch – On/Off
Power Source	3.0 Lithium Battery (CR123A)
Operational Duration	Approx. 40 hours

Standard Supply Package

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High Impact Carrying Case

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Head Mount

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Operator’s Manual

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Lens Brush & Tissues

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Objective Lens Cap and Open Eyeguard

Modular Accessories & Optional Extras

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High performance Objective Lenses

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Auxiliary Magnifier Lens

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Daylight Training Filter

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Sacrificial Lens Ports for Objective Lenses

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Solid State Laser Illuminators and Weapon Mounts

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Modified Interspiro FFM for underwater operations