Description

The QHY268M is a monochrome back illuminated cooled cmos camera with 16bit ADC. 3.76um pixel size, 26mega pixels. Sony IMX571 sensor.

The QHY268M is the CMOS camera with native 16-bit A/D on-chip. The output is real 16-bits with 65536 levels. To compare with the 12bit and 14bit ADC. The 16bit ADC can get high sample resolution, system gain will close to 1e/ADU. No sample error noise and low noise.

One benefit of the back-illuminated CMOS structure is improved full well capacity. This is particularly helpful for sensors with small pixels. Even with unbinned 3.76um pixels the QHY268M has a full well capacity of 51ke-

The QHY268M has 0.7 electron of read noise at highest gain and 6.8FPS full resolution high readout speed. One electron of read noise means the camera can achieve a SNR>3 at only 4 to 6 photons. This is perfect performance when conditions are photon limited, i.e., short exposures, narrow band imaging, etc., making this large area sensor ideal for sky surveys and time domain astronomy.

The QHY268M is a back-illuminated Scientific CMOS camera with extremely low dark current using SONY's Exmor BSI CMOS technology. In general, the fan-blade mechanical shutter will be broken if it is used 200,000 times or so, and in some specific cases it is easy to fail to switch on or off. The advantage of electronic shutter over mechanical shutter is high reliability and stability when the observatory shoots a large number of pictures. The electronic shutter is a relatively perfect choice for the observatory.

The monochrome camera body uses the ultra-short back focus design as a standard configuration.  This results in a camera back focus of only 12.5mm for maximum flexibility with a wide range of accessory and optical systems.

Specifications