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The ASI662MC adopts the Sony-IMX662 sensor has a rolling shutter a frame size of 1/2.8″ a pixel size of 2.9um has 2.07 million pixels 19201080. In high speed mode the CMOS sensor can output 102.6 frames/second at full resolution and provide a low read noise level. Large full well capacity not easy to overexposure The ASI662MC adopts Sony IMX662 sensor with the latest technology. Compared to the previous generation of sensors it has very low readout noises and an extreme large full well capacity which is 3 times larger than that of IMX 462MC. This helps effectively avoid overexposure issues and also allow longer exposures. In low light conditions the camera performs excellent capturing very clear images of celestial objects. STARVIS 2 ASI662MC adopts the latest SONY IMX662 sensor with the advanced STARVIS 2 technology. Featuring zero amp glow higher sensitivity to red and near infrared NIR light and 3 times larger full well capacity it can be regarded as an upgrade of ASI462MC. Also its dark current noise is several times lower than ASI174MC. USB 3.0 256M DDR3 Memory The camera is equipped with a USB 3.0 transmission interface and a built-in 256MB DDR3 cache to ensure stable and secure data transmission. Under long exposure it effectively avoids frame dropping and greatly reduces the glow effect caused by slow reading speed. Upgraded Model Upgraded Model – The AS1662MC is an upgraded product of the AS1462MC. Compared with ASI462MC it has the characteristics of a greater full well depth and no amp glow. Model ASI662MC AS1462MC Color or Mono Color Color With or Without Glow Without With Format 1/2.8″ 1/2.8″ Resolution 19201080 19361096 Pixel Size 2.9m 2.9m Readout Noise 0.8-6.9e1.22e@19db gain 0.47-2.65e QE Peak 91% 80% Full Well 38.2ke 11.2ke ADC 12bit 12bit Back Focus 12.5mm 12.5mm MAX FPS 102.6fps 136.1fps Diagonal 6.45mm 6.46mm No Amp Glow ASI662MC exhibits zero amp glow no matter how long the exposure and how high the gain value. Since it is implemented directly at the hardware level it does not require software control. Camera Curve – Low read noise high dynamic range Readout noise includes pixel noise circuit noise and ADC quantization noise. The lower the readout noise the better. As can be seen the readout noise of AS1662MC is very low compared to CCD camera. The built-in HCG mode can effectively reduce the readout noise at high gain and allow the camera to maintain the same high dynamic range as it does at low gain. When the gain is 252 the HCG mode is automatically turned on and the dynamic range rises back to 12bit. Quantum Efficiency The QE curve and readout noise are very important parameters to measure the camera’s performance. Higher QE and lower readout noise are necessary to improve the image signal-to-noise ratio. Specifications Sensor 1 / 2.8″ CMOS Sony-IMX662AAQR-C Bayer Pattern R Gr Gb B QE peak 91% Back focus length 12.5mm Max fps 107.6fps Full well 37.8Ke Shutter Rolling shutter Resolution 2.07Mega Pixel 19201080 Pixel Size 2.9m Exposure Range 32s2000s Interface USB 3.0 /USB 2.0 Type-B Protect window 21-1.1 AR ADC 12bit Dimension 5.568mm3.132mm Weight 126g Working Temperature -5C50C Storage Temperature -10C60C Working Relative Humidity 0-80% Supported OS WIN7/8/10 3264 Linux Mac