The QHY50GX uses On Semiconductor (Kodak) KAF−50100 Image Sensor, a high performance, 50- megapixel CCD. Based on the TRUESENSE 6.0 micron Full Frame CCD Platform, the sensor features ultra-high resolution, broad dynamic range, and a four-output architecture. A lateral overflow drain suppresses image blooming, while an integrated Pulse Flush Gate clears residual charge on the sensor with a single electrical pulse. A Fast Dump Gate can be used to selectively remove a line of charge to facilitate partial image readout.

The sensor also utilizes the TRUESENSE Transparent Gate Electrode to improve sensitivity compared to the use of a standard front side illuminated polysilicon electrode. The full imaging array is read out of four outputs, each of which is driven by a low impedance two stage source follower that provides a high conversion gain. This combination enables low noise at a net readout rate of 12 MHz (3 MHz per output).