ATN THOR-HD 640 5-50x100 Thermal Rifle Scope

Model no: TIWSTH645A

Not exportable outside of the USA. See Export Policy

This product is no longer available
Please consider this similar product instead
ATN ThOR 4 4-40x75 60HZ Thermal Riflescope

Not exportable outside of the USA. See Export Policy

ATN ThOR-HD 640 5-50x100 Thermal Riflescope Features

• Use Day and Night 
• See in total darkness, through fog and smoke 
• Available in 384x288 and 640x480 resolution 
• 50hz frame rate delivering smooth motion picture 
• Record Video and Capture Images 
• Smart Range Finder determines range with two clicks 
• Smart Shooting Solution 
• Recoil Activated Video (RAV) records your hunt prior to and after the shot 
• Wi‐Fi Streaming (App) use your phone / tablet as a viewfinder 
• Firmware Upgradeable 
• And more... 


At billion cycles per second, the ATN Core pushes optics into the 21st century!
Utilizing high-resolution sensor with distinct night vision capability.
The Obsidian Core is a highly specialized computer that is designed to run a suite of sensors and crunch huge files in a blink of an eye.
It is more easier then setting up your smartphone and like your phone offers plenty of customization to make your ATN X-HD device.


Ballistic calculators were never this easy. No more charts, complex reticles, and calculators. The ATN Obsidian Shooting Solution does it all. Range in with your Smart Range Finder, enter your wind readings and let the Obsidian Core do the rest.Turn through the wind, change your incline angle, adjust distance and instantaneously your point of impact will shift to have the perfect shot every time.


You have more important things to worry about then remembering to press the record button before each kill shot. But boy wouldn’t it be nice to have that video afterwards? Recoil Activated Video (RAV) takes care of all your worries. Just relax and focus on your game and let the Obsidian Core do the heavy lifting.When you set your video record to RAV, the system buffers everything your scope sees. As the trigger is pulled you are left with a full video of what you saw before the shot was taken, the moment of, and as much video after as you care for.


Save all the Ballistic and Zeroing-in data in the profile Manager for every weapon that you plan to use the X-Sight on. No worries about resetting everything up every time. Just create a new profile and you are ready to go.


Our Patent Pending Smart Range Finder will make your life easier than ever. With only two clicks and a simple shift of the scope you will be able to range your target. Once ranged in your reticle will automatically adjust its point of impact. No more guessing, chart memorization or complex calculations.


Make capturing your experiences in stunning HD a regular part of your adventures.
No more missed opportunities for that once in a lifetime moment. Record videos and take photos to bring your adventures back home to share with friends, family and on social media.


We make it easier than ever to capture and share your videos
with your friends and family back home and online


Unlike many traditional optics, the silky smooth zoom helps you get up close
and personal with everything you’re looking at.


We carefully designed our smart devices taking proper account of the interaction between them and the people that use them


The E-Compass let you know exactly what direction you need to head so you can move a little closer and get a better shot at that monster buck you’re tracking.


Improve ability to smoothly spot game by activating the built-in gyroscope & image stabilization! Steady your view and make the experience a lot of more fun!


The E-Compass let you know exactly what direction you need to head so you can move a little closer and get a better shot at that monster buck you’re tracking.


By utilizing the ATN Obsidian app, you can control your device and view live streaming. Connect a phone or tablet and view everything simultaneously.Want to see what you’ve recorded so far? No problem, once connected to the app via WiFi, open up the Gallery and playback your latest adventures. All your photos and videos are right at your fingertips. 

ATN THOR-HD 640 5-50x100 Thermal Rifle Scope description

From Night Vision Guys about ATN ThOR HD 640 5-50x100 Thermal Rifle Scope TIWSTH645A

In 2016 ATN took yet another novel approach to thermal scopes.  Using some of the technology developed for the X-Sight scope and BinoX binoculars in 2014 and 2015, they redesigned the entire ThOR line to be based on Obsidian "T" II Thermal cores instead of the FLIR cores used previously.  Results seem to be impressive.  The new ATN ThOR HD thermal scopes pack a ton of modern technologically advanced features.  How well these new cores will hold up compared to the proven FLIR cores used in the past remains to be seen, but the 3 year body / 10 year core warranty ATN offers puts our concerns to rest.  

This particular long range model featuring 5-50x progressive zoom with a 100mm objective lens is ideal for long range hunting.  Well priced and packed with features this thermal scope is a great choice for those needing the extra reach.  

Some key features of the ThOR HD Series:

  • Smart Range Finder
  • Recoil Activated Video (RAV)
  • Wi-Fi
  • Bluetooth
  • Gyroscope
  • Magnetometer
  • Accelerometer
  • E-Barometer
  • Smooth Zoom
  • Profile Manager
  • E-Compass
  • GPS Geotag

From ATN about Smart ThOR HD 640 5-50x100 Thermal Rifle Scope and THOR-HD Series 

In 2016 ATN has changed the Landscape of Thermal Hunting! Smart ThOR HD scopes powered by Obsidian Core have raised the bar like never before.

The most technologically advanced line of thermal rifle scopes on the market bar none! The all new Obsidian "T" II Thermal core beats at the heart of our systems. More power, more features, smaller packaging, and lower cost have allowed ATN to make the biggest update to its award winning thermal product line. Record videos and photos onto a MicroSD card. Never again forget to record that perfect shot with ATN's patented RAV (Recoil Activated Video). Use ATN's Smart Range Finder to quickly range in on your target and allow the ballistic calculator to make instantaneous corrections to your POI on the fly. 
Smooth Zoom, built in WiFi, Bluetooth, 3D Gyroscope, 3D Accelerometer, 3D Magnetometer are but a few of the features and sensors packed into these incredible systems.

Thermal Imaging

Please note that most thermal devices are built per order.  It may take 3-5 days or more for your order to ship.  If timely shipping is important to you, please, contact us to verify availability prior to ordering. 

Thermal devices can produce various types of images.  Some are color others are monochrome.  In either case change in shade or color indicates temperature differences.

color thermal image thermal bw image

Here is how thermal imaging devices work...

A special lens focuses the infrared light emitted by all of the objects in view.

The focused light is scanned by a phased array of infrared-detector elements. The detector elements create a very detailed temperature pattern called a thermogram. It only takes about one-thirtieth of a second for the detector array to obtain the temperature information to make the thermogram. This information is obtained from several thousand points in the field of view of the detector array.

The thermogram created by the detector elements is translated into electric impulses.

The impulses are sent to a signal-processing unit, a circuit board with a dedicated chip that translates the information from the elements into data for the display.

The signal-processing unit sends the information to the display, where it appears as various colors depending on the intensity of the infrared emission. The combination of all the impulses from all of the elements creates the image.

There are a few key Manufacturers when it comes to thermal imaging.  

ATN: produce such well knows devies as ThOR-HD thermal scope, BINOX-THD thermal binoculars, and OTS-HD thermal monocular.  

FLIR/Armasight: the largest maker of consumer level thermal products is well knows for their full product line.  Zeus thermal scopes, Q14 and Scout monoculars, Helios and Scout binoculars and many more.

Pulsar: a very popular brand for digital night vision and thermal imaging.  Key products include Pulsar Trail and Apex thermal scopes and Pulsar Helion and Quantum thermal monoculars.

Seek: mobile device mounted thermal cameras are the main products of this brand.

Delivery Time and Manufacturing Process for ATN THOR-HD 640 5-50x100 Thermal Rifle Scope:

Most of our manufacturers do not keep products like ATN THOR-HD 640 5-50x100 Thermal Rifle Scope assembled on the shelf. Night Vision tubes are kept separate from the body of the unit. When the order is placed, the manufacturer starts the order processing and assembly process which includes the following:

  • Order processing - we collect all the necessary information including address and phone numbers. We also make sure that our customer ordered the correct product for their needs and that the product can be exported by US law to the country of destination. In some cases a signed export compliance form is required.
  • QC - in this step the manufacturer will inspect all individual parts which will be used to assemble the night vision device for any defects.
  • Production & Assembly - during production, all the parts are put together. Night Vision tubes in inserted into the body of the unit and all the complex electronics for the device are connected. This process takes place in a special lab called the "clean room" as even a small speckle of dust can cause undesired optical effect.
  • QA - one the night vision device is assembled, it goes through a rigorous testing process to make sure it meets all the expected specifications and all parts function as expected. For this most manufacturers have a special "dark room" designed to allow testing of the units without causing incidental damage to the night vision tube by exposure to bright light.
  • Packaging - this is a key process as well. In most case your night vision device will be shipped to you directly from the manufacturer but sometimes needs to be sent to us first. In either case items need to be packaged securely to avoid any kind of damage during transportation.
  • Shipping - as described above items will most of the time ship from the manufacturer. For most domestic orders (unless shipping to POB or AFB) a premium shipper like FedEx or UPS will be used.

Only by following the above steps can we along with our manufacturers bring you - our customer - night vision products of highest quality, However as you can understand the above process can take several days to complete. For example if your device fails QA, the entire process restarts. Also at QC stage a manufacturer may realize that the tube they have in stock has a defect and a replacement tube needs to be ordered. Due to the complexity of this process, it is prudent to expect 3-4 business days for production and handling of the purchased device. Keep in mind that this process is designed to guarantee your satisfaction with the night vision device of your choice.  It occasionally possible to expedite the process for urgent orders but addional fees or other restrictions may apply.

Technical Specifications

SENSOR 640 x 480
CORE ATN Obsidian "T" II
IP RATING Weather resistant
VIDEO RECORD RESOLUTION 1280x960 at 30 fps
MICRO USB External Battery Pack
RETICLES Multiple Patterns & Color Options
MOUNT Picatinny Quick Release Mount, Interchangeable
BATTERY TYPE 4 AA (Lithium Recommended)
DIMENSIONS 10.67" x 3.97" x 3.47"/271 mm x 101 mm x 88 mm
WEIGHTLBS 2.75 lbs
WARRANTY Three years

Questions on ATN THOR-HD 640 5-50x100 Thermal Rifle Scope

From on

Q: what is the best process to zero this optic during the day light hours.

A: Hi Dusty. ATN THOR-HD is a thermal riflescope and as such can be used during the day same as at night. However, there are some tricks for zeroing in a thermal scope. The idea is that your target should present a sharp temperature contrast with the surrounding environment. This can be achieved by keeping a beer bottle cap in a cooler for a while and then attaching it in the middle of your target. You can also use hand-warmers or cooling element. You can also purchase special thermal targets which has the thermal contrast feature built in. Please let us know if you have any further questions.

From on

Q: Do you have this ATN Thor HD in stock ?

A: Hi Norm. This particular ATN THOR thermal scope is not in stock as of Jan 18th but we get them periodically. They do not last long in the inventory. We suggest to place a pre-order to make sure you get the unit when it next arrives.

From on

Q: Is the core/sensor 30hz or 60hz

A: Hi Richard. 30hz is what ATN THOR HD thermal scopes are at currently.

From on

Q: Does Thor have a 60HZ core sensor available? Like to use it on an AR15 to hunt coyotes. Seems that 60HZ would react faster.

A: Hi David. 60hz is not available at this time. I honestly doubt you will get much benefit from having 60hz on a 640 resolution scope.

From on

Q: Interested in thermal scope for coyote hunting mostly under 250 yds on an ar platform. We told to look at atn640 5x. Thoughts or suggestions?

A: Hi Justin No question that ThOR thermal scope will do the trick. If you are having doubts and would like to discuss details of alternate models please let us know the best time and number to call. We would be happy to walk you through different options.

From on

Q: What is the temperature that Thermal becomes non effective ? I live in Northern Australia and we get hot nights. Would feral cats show up on a 38’c night ?

A: Hi Dan. Effective operating temperature is -20 to +50C. However, as you pointed out, the scope shows the temperature differential. If there is little or no differential it is less effective. I do have to give you heads up that thermal scopes are not exportable out of the USA. However, we do carry some monocular and night vision devices which are exportable and can be shipped to Australia. In terms of thermal monocular we have a few close-out items from FLIR which are being sold at a fraction of the normal cost. Let us know if this is of any interest.

From on

Q: I get it that you can use a hand warmer or such as the target but how do you "see" the point of impact?

A: There are many way to sight in your thermal scope. In case of the hand warmers, you will see the hole created by the bullet due to the splatter and heat changes.

From on

Q: How many microns is this scope and average battery life?

A: Hi Ryan. The thermal core on this Thor HD Thermal scope is 17 micron. Battery life depends on too many factors for me to comfortably promise you a duration. ATN says it is 8 hours on their documentation.

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