The Guide TU435S Thermal Scope is built for medium to long-range work, with a 35mm lens pushing detection out to 1800m. It suits the shooter who spends the night watching a crop edge, a dam or a long paddock and needs to pick up movement well before it gets close. Powered by the APEXVISION imaging system, it holds a usable picture in the conditions that flatten cheaper units.
Reach to 1800 metres
A 400x300 detector on a 12um pixel pitch sits behind a 35mm lens for 1800m of detection range. Magnification runs 4.4x to 17.6x across a field of view of 7.4 degrees x 4.4 degrees, about 13 x 8m at 100 metres. That is a deliberately tight view built around distance, so the pixels you have land on the animal rather than being spread across a paddock you are not interested in.
Fifteen millikelvin of temperature separation
NETD measures the smallest temperature difference the sensor can distinguish, and lower is better. At 15mK the TU435S keeps a fox or a pig separated from cooled ground in the dead hours, and holds contrast through humidity and light mist. It works across 8 to 14um at 50Hz, so a target crossing at speed stays sharp instead of trailing.
Shutterless operation on a full HD display
The shutterless design does away with the periodic calibration freeze, which means the image never drops out at the moment an animal steps clear. The 0.49-inch AMOLED runs 1920x1080 with White Hot, Black Hot, Red Hot, Green Hot, Iron Red, Blue Hot and Sepia to suit different ground and conditions. Dioptre adjusts -5 to +5.
Sealed, powered and mounted
Two internal 18650 cells give 8 hours of run time, with an external 18650 available to extend a long night. Charging and USB 2.0 data run over USB-C. The scope measures 374x89x76mm and weighs 738g, rated IP68 against dust and water and working from -20C to 50C. Wi-Fi hotspot, video and audio recording let you keep footage for pest records or property reporting. A quick release mount is included, torqued to 2.5N.m or 22.13 in-lbs.
Ideal for
- Deer, pig and goat hunters working medium to long distances
- Property and station managers on organised pest control programs
- Professional pest controllers covering open country
- Shooters wanting long-range reach without stepping up to a rangefinding model
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