ATN ThOR 5 XD 2-20x — 1280×1024 thermal riflescope

How far you can see a person

160 m make out detail260 m tell what it is1,042 m spot it┆ maker’s claim

501002005001k2k5k m

Calculated from the sensor's pixel pitch and the lens focal length, for clear air.

ATN quotes 3,110 m, 3× our figure, because makers usually measure against a person’s full height rather than their width. Why the numbers differ

ATNRiflescope · 1280-class

ATN ThOR 5 XD 2-20x

Approx. price: ~$4,995
Sensor: 1280×1024 · 12 µm
Lens: 50 mm · 2×
Weight: 46.6 oz

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Best for

A dedicated night rifle for hogs and coyotes on open ground

01Specifications

As published by ATN. Sources: atncorp.com (product page + compare API, sku TIWST51250A; ATN ThOR 5 XD manual for display + length; current price, list $5,495), lens: pyramydair.com spec table ('Objective lens: 50 mm', variant a=18986).

Sensor: 1280×1024
Pixel pitch: 12 µm
Refresh rate: 60 Hz
Lens: 50 mm
Base magnification: 2×
Digital zoom: up to 20×
Field of view: 17.6° horizontal
Display: 1024x768 OLED
Claimed detection: 3,110 m
Claim basis: human-sized target (ATN product page 3400 yd; ATN manual 'Human Detection Range' lists 2150)
Run time: 10 h
Battery type: Internal Li-ion
Weight: 46.6 oz
Length: 14.4″
Laser rangefinder: No
Ballistic calculator: Yes
Records video: Yes
Wi-Fi: Yes
Warranty: 5 years
Country of origin: USA
Approx. price: ~$4,995

02Pros and cons

From the published specs. What owners report is in the next section.

For it

High-resolution 1280×1024 sensor, 4× the detail of the common 640×512
Smooth 60 Hz picture on a running animal
Ballistic calculator (you enter the range yourself)
10 h of battery, 33rd-longest of 344 here
Records video and connects to a phone app
Warranty: 5 years

Against it

Sensitivity (NETD) not published
Built-in battery, so no swapping in the field
Heavy at 46.6 oz, 10th-heaviest of the 194 riflescopes here
No rangefinder, so you judge distance by eye
No waterproof rating published
~$4,995, well above the ~$3,000 typical for riflescopes here

03What owners say

owner discussions, 2023–2025

Summarised from 10 public owner discussions between 2023 and 2025. Owner experience, not a measurement; owners rarely distinguish the ThOR 5 XD variants, so this covers the family.

The ThOR 5 XD gets talked about for one reason: a 1280 core priced thousands below any 1024-sensor scope. Every buying discussion opens with that math and then runs straight into ATN's reputation. Owners who have actually used one mostly like the picture. A reviewer who got time on a 4-40x could read the shot pattern on an ordinary target while zeroing at 100 yards and says it beats his 384 scopes even at 15x; an owner who traded up to the XD LRF 3-30 calls the image incredible; a 4-40 owner shooting 6 ARC on humid Southern nights is happy once he worked out the settings.

The complaints are the ATN complaints. A firmware update (.841) turned one owner's ThOR 5 LRF 4-40 into a black screen in the middle of hunting season, and because ATN stores would not accept a shipped scope his options were a six-hour drive or three weeks at the factory. Two owners switched auto NUC off because it fired often enough that the screen seemed to freeze, and one still sees a slight flicker every five to ten seconds. Customer-service stories run both ways. And when an owner posted footage calling it super clear, AGM 640 and 384 owners replied that theirs look sharper, which the poster blamed on upload compression.

Owners do not separate the magnification or LRF variants when they talk about the scope. The posts here cover the 4-40x, the LRF 3-30x and the LRF 2-20x, so this is written for the family.

What owners like

The resolution-per-dollar is real to the people who use it: one reviewer zeroed at 100 yards by reading the shot pattern on an ordinary target and says the image at 15x beats his 384 scopes, and an owner who stepped up from a Thor 4 to the XD LRF 3-30 calls it incredible.
ATN's trade-in program made the upgrade painless for Thor 4 owners: one got a $3,000 credit on a scope he paid $3,700 for two years earlier, and another sent in two Thor 4s toward an XD rather than selling them privately.
Sale pricing gets aggressive: owners reported the XD LRF at $3,400 in late 2024 plus 10% dealer codes, still thousands under any other 1024 or 1280 scope they could find.

Common complaints

Firmware updates are the recurring failure: one owner's ThOR 5 LRF 4-40 went to a black screen after the .841 update during peak season, ATN stores would not take a shipped unit, and his choices were a six-hour drive or three weeks at the factory; longtime ATN owners say a botched update is the usual way a scope ends up locked and sent back.
Auto NUC is intrusive: two owners switched it off because it fired often enough to feel like the screen freezing, and one still sees a slight flicker every five to ten seconds that he now puts down to a software bug.
The 1280 label does not end the clarity argument: when an owner posted footage calling it super clear, an AGM 640 owner and several 384 owners replied that theirs look sharper even in full humidity, and the poster could only say that uploads degrade the video.
Customer service is a coin flip in owner reports: some get fast answers and a same-week swap, others describe multiple promises and zero follow-up, and the buyer who asked for the consensus on the brand concluded the old warnings had been revalidated.
Resale is weak: a never-opened unit bought at launch for $5,500 was listed a year later at $4,000 with no takers in the discussion, and sale prices had dropped to $3,400 by then.
Independent reviews were scarce for its first two years: buyers in 2023 and 2024 could find only ATN's own and SHOT Show videos, and an ATN store told one shopper in summer 2023 they were still working out minor issues.

Does the 1280 core actually give a clearer image than a 640?

Owners argue about this at length. The physics side of the discussion says that at the same 12-micron pitch behind the same lens, a 1280 sensor sees a wider field at the same pixels per degree, so the clarity gain only appears when the lens changes too. The reviewer who used the 4-40x says the extra data is obvious in practice, while AGM 640 owners looking at posted XD footage were unconvinced. Judge it through the eyepiece rather than from uploaded clips, which the posters themselves say degrade.

Is the firmware update safe to do?

Do it well before the season and follow ATN's steps exactly. One ThOR 5 LRF 4-40 owner's scope went to a black screen after the .841 update and was out of action for weeks; longtime ATN owners say the update process is the most common way a scope ends up locked and sent back, and that re-flashing sometimes clears a glitch even when the scope already reports it is current.

What does ATN give on trade-in?

Two Thor 4 owners were offered $3,000 credit toward an XD on scopes they paid about $3,700 for, and both took it; a third was offered $1,700 for a Thor 4 640 4-40 and kept it instead. The credit, not a private sale, is how most owners here got into the XD.

Should I turn auto NUC off?

Owners who did were happier. Two found the automatic calibration ran often enough to make the screen feel like it was freezing and switched to manual; one of them did it hoping to cure a slight flicker every five to ten seconds, found the flicker stayed, and now puts that down to a software bug. The trade-off is remembering to calibrate yourself when the image starts to smear.