The QHY2020 uses a 13.3mm x 13.3mm square scientific CMOS with ultra high QE and wide spectral response from 200nm to 1100nm. It has 94% peak QE at 550nm-600nm, 60% QE at 240nm. It also has very good QE in the NIR range, 60% at 800nm, 38% at 900nm.
With read noise as low as 1.6e-, this camera can capture photons from very dim objects. At 3.5 electrons it can achieve SNR=2, which means 4 photons. This detection limit is close to some EMCCD cameras.The QHY2020 has dual stage TE cooling that reduces the sensor temperature to -40C below ambient.
The effective image size is 2048 x 2048 pixels. However, it has the capability to output dual channels as 4096 x 2048 with one channel at high gain and one channel at low gain. You can also select either the high gain or low gain output.
Microlens - free array, avoiding the influence on photometry.In general, the fan-blade mechanical shutter will be broken if it is used 200,000 times or so. in some specific cases it is easy to fail to switch on or off. The advantage of electronic shutter is high reliability and stability when the observatory shoots a large number of pictures.
The standard version of the QHY2020 is USB3.0. It can produce a maximum frame rate of 43 frames per second for 8-bit images, or 25 frames per second for dual 12-bit images. The camera can also transfer selected regions of interest for extremely fast rates, e.g., 430 FPS at 200lines, 4300 FPS at 10 lines, and 21,500 FPS at 2 lines. This specially addressed line readout mode can also be customized.
With ultra high QE and ultra low read noise, the QHY2020 is an ideal camera for time-domain astronomy, autoguiding large professional telescopes, and transient source detection and spectrum analyze.
The 13.3mm x 13.3mm sensor size is well matched to a microscope image circle. Microscopy applications will benefit from its high QE, low noise and fast readout. The QHY2020 is an ideal scientific CMOS camera for Fluorescence imaging .
The high, wide response from NIR to UV makes the QHY2020 a perfect camera for spectrum analysis and spectrum imaging systems.