BoatingLAB Tests: Night Vision Scopes

Find out whether you should you choose night vision or thermal imaging.

By Randy Vance

BoatingLAB Tests: Night Vision Scopes

FLIR First Mate HM MS 324
Heat is a form of infrared radiation but at a wavelength beyond the IR-assist technology used in night vision. The compact scope requires no focusing, but the eyepiece can be adjusted to match eye strength. White or black hot image settings gave the optimum contrast, but red was worthwhile to preserve night vision. We charged the internal lithium-ion batteries with a USB cord attached to a laptop.

Wins: FLIR was the only waterproof device we tested and the unchallenged master at making the heat signature of a large target, such as a human, pop out on the screen. FLIR was better than night vision when spotting the small target buoys with no reflected light behind them. It was the easiest to use. Pick it up, turn it on, you’re good to go.

Losses: The resolution of the screen did not allow us to see the buoys beyond about 25 yards.

Final Word: FLIR’s high-contrast image of a human target makes it ideal for search and rescue. A higher-resolution viewfinder would improve it.

BoatingLAB Tests: Night Vision Scopes

Specs
Vision Type: Thermal imaging
Size: 6.7" x 2.31" x 2.44"
Weight (approx.): 12 oz.
Water Shield: Waterproof
Focus: None
Tripod Mount: Yes
Viewer Resolution: 320 x 240
Light Magnification: NA
Battery Type: Li-ion
Battery Life: 5-7 hours
Viewing Range (See a man @ ft.): 1,476
Image Capture: No
Image Storage: NA
Video Output: No
Visual View Modes: White/hot, black/hot, red
Field of View: 24˚ W x 18˚ H
Magnification: 2x e-zoom
Warranty: 2 years
Price: $2,999

BoatingLAB Tests: Night Vision Scopes

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