Join the #1 community for gun owners of the Northwest
We believe the 2nd Amendment is best defended through grass-roots organization, education, and advocacy centered around individual gun owners. It is our mission to encourage, organize, and support these efforts throughout Oregon, Washington, Idaho, Montana, and Wyoming.
Discuss firearms and all aspects of firearm ownership
Join others in organizing against anti-gun legislation
Find nearby gun shops, ranges, training, and other resources
Discover free outdoor shooting areas
Stay up to date on firearm-related events
Share photos and video with other members
...and much more!
thermal imaging
Infrared thermography (IRT), thermal imaging, and thermal video are examples of infrared imaging science. Thermographic cameras usually detect radiation in the long-infrared range of the electromagnetic spectrum (roughly 9,000–14,000 nanometers or 9–14 µm) and produce images of that radiation, called thermograms. Since infrared radiation is emitted by all objects with a temperature above absolute zero according to the black body radiation law, thermography makes it possible to see one's environment with or without visible illumination. The amount of radiation emitted by an object increases with temperature; therefore, thermography allows one to see variations in temperature. When viewed through a thermal imaging camera, warm objects stand out well against cooler backgrounds; humans and other warm-blooded animals become easily visible against the environment, day or night. As a result, thermography is particularly useful to the military and other users of surveillance cameras.
Some physiological changes in human beings and other warm-blooded animals can also be monitored with thermal imaging during clinical diagnostics. Thermography is used in allergy detection and veterinary medicine. Some alternative medicine practitioners promote its use for breast screening, despite the FDA warning that "those who opt for this method instead of mammography may miss the chance to detect cancer at its earliest stage". Government and airport personnel used thermography to detect suspected swine flu cases during the 2009 pandemic.
Thermography has a long history, although its use has increased dramatically with the commercial and industrial applications of the past fifty years. Firefighters use thermography to see through smoke, to find persons, and to localize the base of a fire. Maintenance technicians use thermography to locate overheating joints and sections of power lines, which are a sign of impending failure. Building construction technicians can see thermal signatures that indicate heat leaks in faulty thermal insulation and can use the results to improve the efficiency of heating and air-conditioning units.
The appearance and operation of a modern thermographic camera is often similar to a camcorder. Often the live thermogram reveals temperature variations so clearly that a photograph is not necessary for analysis. A recording module is therefore not always built-in.
Non-specialized CCD and CMOS sensors have most of their spectral sensitivity in the visible light wavelength range. However, by utilizing the "trailing" area of their spectral sensitivity, namely the part of the infrared spectrum called near-infrared (NIR), and by using off-the-shelf CCTV camera it is possible under certain circumstances to obtain true thermal images of objects with temperatures at about 280 °C (536 °F) and higher.Specialized thermal imaging cameras use focal plane arrays (FPAs) that respond to longer wavelengths (mid- and long-wavelength infrared). The most common types are InSb, InGaAs, HgCdTe and QWIP FPA. The newest technologies use low-cost, uncooled microbolometers as FPA sensors. Their resolution is considerably lower than that of optical cameras, mostly 160x120 or 320x240 pixels, up to 1024×768 for the most expensive models. Thermal imaging cameras are much more expensive than their visible-spectrum counterparts, and higher-end models are often export-restricted due to the military uses for this technology. Older bolometers or more sensitive models such as InSb require cryogenic cooling, usually by a miniature Stirling cycle refrigerator or liquid nitrogen.
I've seen Steiner and Infraray release these in the shape of an Eotech but those use a built in red dot and neither have a super long life compared to their stand alone variants (I also dont like to use red dots)..
Why not marry a Primary arm Micro Prism with a reflex thermal?
Hi:
Used this tool for spotting predators at night. A little over $1,000 when purchased new. No damage, works well. Sold ranch, no longer needed. Can be picked up in either Portland or on the Kitsap Peninsula.
Here is a nice review of the product...
Hunting season is around the corner.
Used Leupold LTO Tracker 2 HD
normal wear signs on the paint, but works great.
it will come with a customized pelican case
and original box no lens covers
not looking for trades
thank you for looking.
Leupold LTO Tracker 2 HD about 2.5 years old. Great shape maybe on it's second battery. Has some very small scratch in a few spots on the aluminum tube from being stored in my kit. Lens are perfect. Plastic lens caps some abrasion wear.
Good piece of thermal kit as a back up to NV.
For sale is a Brand New Zeiss DTI 3/35:
- Factory box, carry strap, carry case, USB charger, USB Cable, Rechargeable Battery.
Specifications:
Optical Performance
2.5x optical magnification, 4x digital zoom in 0.5x steps magnification
35mm focal length, 62' linear field of view at 100 yards...
I have a great condition Seek Thermal Reveal XR fast frame in black with box. It was bought new and viewed around the house for cold spots. Same as Leupold's LTO Quest. $250 sale.
https://blog.ivytools.com/2016/03/31/seek-reveal-xr-fast-frame-first-impressions/...
I've had a lot of fun with this scope, a lot! But I have bills to pay, and selling my 'lady of the night' seems to be the only option at this point; sorry for the tmi.
This scope can be used as a rifle scope, spotting scope, and an impromptu security camera.
This scope comes with an extral HD...
armasight predator thermal 2-8x magnification
Includes extended battery pack and video recorder
It hasn't been getting much use, mostly sitting in the safe
$1200 cash no interest in trades