The cooling system of OGMA AP26CC and AP26MC is a two-stage Thermoelectric Cooler (TEC) with controllable electric fan to assisting heat dissipation.
The TEC system is controlled by a PID algorithm, which allows the TEC to be precisely regulated towards the target temperature with 0.1°C deviation. Such efficient cooling system guarantees the stability of ultra-low noise mode and quality of the camera image.
The effective temperature reduction can be -35°C from ambient temperature. This means that if the environment temperature is 10°C, you could lower the temperarture of the sensor to -25°C.
Some people prefer cooling the sensor as much as possible. We recommend cooling the sensor to a working temperature between 0°C and -10°C because below this temperature there is a diminished return on noise reduction for each additional degree of temperature reduction. Also because by not cooling to the extreme, you will be reducing the thermal stress on the sensor which will extend the useful life of your camera.