The IMX461ALR-C is a diagonal 55 mm (Type 3.4) CMOS active pixel type image sensor with a square pixel array and 102 M effective pixels. It has a 11760× 8896 pixel array with 3.76um pixels. The sensor size is 44mm x 33mm. Ultra low dark noise. QHY461 has both monochrom version and color version.
Native 16BIT ADC
The QHY461 and QHY411 is the world's first scientific 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 be less than 1e/ADU. No sample error noise and low noise.
Great Full Well
44ke- at 3.76um 396ke- at 11um
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 QHY461 has a full well capacity of 44ke-. When binned 2x2 to 7.5um the full well is 176ke- and when binned 3x3 to 11um the full well is 396ke-.
Ultra Low Read Noise
1 Electron at High Gain
The QHY461 has only one electron of read noise at high gain and 2FPS high readout speed. One electron of read noise means the camera can achieve a SNR>3 at only 3 to 4 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.
Electric Rolling Shutter Low Dark Current
The QHY461 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.
Best Match for HyerStar System
The round camera case design of QHY461 and the imager size is best match for Hyperstar systems.
The QHY461 support USB3.0 and it has the GigaE interface (hardware supported, but will active in future)
Air / Liquid Cooling
The QHY461 has Air / Liquid Cooling with 2-stage TE Cooler.
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