ATN · OTS LT 160 3-6x

Estimated range, standing human, clear air

IdentifyRecognizeDetectBox claim

ATN OTS LT 160 3-6x160×120 · 17 µm · 19 mm

43 m identify70 m recognize279 m detectbox says 430 m (human (ATN 'Human Detection Range', 475 yd))

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Estimated from pixel pitch and lens focal length using the Johnson criteria (2, 8 and 13 pixels across a 0.5 m human critical dimension), clear air, 50 % probability. A model of the optics, not a measurement — real range depends on temperature contrast, humidity and the animal.

ATN

ATN OTS LT 160 3-6x

Handheld monocular160-class

The ATN OTS LT 160 3-6x is a 160×120, 17 µm thermal handheld monocular behind a 19 mm lens. On the Johnson yardstick that is an estimated 279 m detection and 70 m recognition range for a standing person; ATN quotes 430 m detection (human (ATN 'Human Detection Range', 475 yd)). It is the cheapest of the 19 handhelds here, at ~$799.

Approx. price: ~$799
Sensor: 160×120 · 17 µm
Lens: 19 mm · 3×
Est. detection: 279 m · 305 yd

Best for

Scanning from a stand, a truck or a field edge

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Box claim vs. what the optics support

Manufacturer says

430 m

detection, human (ATN 'Human Detection Range', 475 yd)

Johnson estimate

279 m

detect · 70 m recognize · 43 m identify

Claim ÷ estimate

1.5×

how much further the box reaches than a 2-pixel, 0.5 m criterion

One pixel of this unit sees 0.895 mrad (17 µm ÷ 19 mm). Two pixels across a 0.5 m human is 0.5 ÷ (2 × 0.895) × 1000 = 279 m. The box figure is usually computed against a person’s 1.8 m height instead, which is why it comes out higher. Full explanation.

Specifications

Manufacturer-published figures, cross-checked against atncorp.com (product page, compare API, OTS LT manual).

Sensor: 160×120
Pixel pitch: 17 µm
Refresh rate: 60 Hz
Lens: 19 mm
Base magnification: 3×
Digital zoom: up to 2×
Field of view: 8.1° horizontal
Display: 1280x960
Claimed detection: 430 m
Claim basis: human (ATN 'Human Detection Range', 475 yd)
Run time: 10 h
Battery type: Internal Li-ion
Weight: 19.8 oz
Length: 7.7″
Laser rangefinder: No
Ballistic calculator: No
Records video: No
Wi-Fi: No
Warranty: 3 years
Country of origin: USA
Approx. price: ~$799

Derived here

IFOV: 0.895 mrad
Est. detection: 279 m
Est. recognition: 70 m
Est. identification: 43 m
Claim ÷ estimate: 1.5×
Derived field of view: 8.2°
Pixels per degree: 19.5

Features

160 sensor
17 µm
19 mm lens
60 Hz
Under 20 oz

What the spec sheet says

Read from the published specifications and this catalog’s own numbers — not from owner reports, which we have not collected for this unit.

For it

60 Hz core — 20 % more frames than the 50 Hz norm when an animal runs
10 h published run time, 6th-longest of 64 here
Detection claim is only 1.5× our estimate — one of the more conservative box figures here

Against it