The Sightmark® Ghost Hunter 4×50 Night Vision Monocular features a lightweight, durable polymer construction, built for endurance, and a 4x magnification that lends itself well to medium-range observation. The automatic shut-off feature turns the unit off when exposed to bright light sources, saving the night vision tube and ensuring years of operation. Equipped with a high-power infrared illuminator, the Ghost Hunter 4×50 Night Vision Monocular delivers a bright, clear image no matter how dark the conditions and a compact body style for easy travel. Its infrared illuminator catches vivid imaging in low-ambient light conditions or total darkness. Protected by a three-year warranty on the tube and Sightmark’s Limited Lifetime Warranty on the housing, the Ghost Hunter 4×50 Night Vision Monocular is engineered to meet the highest requirements and standards of the serious night vision user.
| Generation | 1 |
| Tube Type | EP33-U |
| Photocathode Type | S25 multi-alkaline photocathode |
| Photocathode, Useful Diameter | 24 mm |
| Photocathode, Integral Sensitivity, typical | 200 |
| Resolution | 36 lines per mm |
| Detection Range, Max for an Object Measuring 1.7×0.5 m in Natural Night Conditions | 180 / 197 m/yd |
| Magnification | 4 x |
| Diameter, Objective Lens | 50 mm |
| Field of View | 15 degrees |
| Field of View | 26 m @100m |
| Field of View | 78 ft @100yd |
| Distance, Minimum Focusing Distance | 3.2 / 1 ft/m |
| Eye Relief, mm | 12 mm |
| Diopter Adjustment | ±5 |
| Power Supply | 3 V |
| Battery Type | 2x AA |
| Battery Life, (with IR), hour | 20 hours |
| Battery Life, (w/out IR), hour | 72 hours |
| Intensity, IR illuminator power | 75 mW |
| IR Wavelenght, nm | 805 nm |
| Material, Lens | glass |
| Body Material | glass filled nylon composite |
| Tripod Mount, inch | 1/4 in |
| Operating Temp,�F/�C | -4 to 104 / -20 to 40 F/C |
| Nitrogen Purged | no |
| IP Standard | IPX3 (weatherproof) |
| Length | 7.28 / 185 in/mm |
| Width | 2.36 / 60 in/mm |
| Height | 3.27 / 83 in/mm |
| Weight, (w/ battery) ,oz. | 14.1 oz |
