Long focal length telescopes produce very high magnification and can image targets that are smaller than other telescopes can get. However, the long focal length results in a high focal ratio, meaning the image can be very dim. To compensate for this, you need large pixels.

The ToupTek ATR432M is made up of 1600 x 1100 huge 9 μm pixels. This gives the sensor a 1.1-inch (14.4 x 9.9mm) optical format. So, for example, with a Celestron 925 SCT, the galaxy NGC 1365 will fill the sensor and be sensitive enough to get an excellent image. 

The camera is also perfectly suited for solar and lunar imaging with shorter length telescopes. Paired with a telescope of 1000mm focal length or less, the entire solar or lunar disk can fit on the sensor. It offers support for high frame rate mode (109FPS at all Pixel Readout 12 bit) and has a readout noise level as low as 2.4e.

Additionally, the camera has a TEC cooling system which maintains precise temperature control within a deviation of 0.1℃, while the dew prevention heater (window heating) further enhances performance. For daytime (solar) imaging this will keep the sensor from being affected by noise.

DDR3

The ToupTek ATR432M camera has a 512MB ultra-fast memory buffer to ensure stable image transmission.

Two stage TEC cooling system

ATR432M is designed with an integrated heat dissipation structure and an efficient cooling module. The cooling system of ATR432M features a two-stage Thermoelectric Cooling (TEC) with controllable electric fan assisting in heat dissipation. This allows the image sensor to operate at temperatures up to 42 degrees Celsius lower than the ambient temperature. The exposure time can be set for up to 1 hour, ensuring that every minute detail is captured. Even in summer, it can still run stably all night with cooling temperatures ranging from of -5°C to -10°C.

Anti-dew technology

ATR432M adopts the new anti-dew technology, which can effectively solve the condensation problem through heating.

This heating function consumes about 5 watts, which can be turned off via software to save power.

Additionally, the dew heater at the protection window has 4 adjustable levels, allowing users to find the heating power that best suits their needs.