The body of the device is hermetically sealed which enables use in inclement weather (fog, heavy shower, dusty environment, sand storm etc.).
The Challenger GS 2.7x50 is equipped with a powerful infrared illuminator that can be used in insufficient illumination conditions for observation at over-average distances. The device also has a matching site to install auxiliary, more powerful, focusable IR Illuminators Pulsar. The device and the built-in IR illuminator are switched on/off with a single switch. Design of the switch prevents the IR illuminator from accidental activation (to avoid disclosure of the observer).
The Challenger GS 2.7x50 boasts a wide range of applications such as night orientation, tourism, hunting, guarding of industrial facilities and private property, military and sport games, patrolling and rescue operations.
Image Tube Type - CF-Super / EP-33-SF
Magnification - x 2.7
Objective Lens Diameter - 50mm
Resolution (centre/edge FOV) - lines/mm 42 / 36
Angular field of view - degree 13
Max. Detection Range - 200m*
Eyepiece adjustment - diopter ??4
Exit pupil - 6mm
Eye relief - 12mm
Operating voltage - 3V (1xCR123A)
Tripod mount - ?_ inch
Min. operating time (IR off / on) - hour 50 / 20
Operating temperature - - 20 ??_+ 40 ??C
Dimensions - 202x79x57mm
Weight of the unit - 0.5kg
Degree of protection (IEC 60529) - IP46
* - in normal nighttime conditions ??? 0.05 lux (quarter moon), m