SPECIFICATIONS: Sensor: 1/2.8? CMOS IMX290/IMX291 Resolution: 2.1Mega Pixels 1936×1096 Pixel Size: 2.9µm Exposure Range: 32µs-2000s ROI: Supported ST4 Guider Port: Yes Focus Distance to Sensor: 12.5mm Shutter Type: Rolling Shutter Protect window: AR coated window Operating System Compatibility: Mac, Windows, Linux Interface: USB3.0/USB2.0 Bit rate: 12bit output(12bit ADC) Adaptor: 2? / 1.25? / M42X0.75 Dimension: ?62mm X 36mm Weight: 120g or 4.2 ounces (without lens) Working Temperature: -5 Degree C?45 Degree C Storage Temperature: -20 Degree C?60 Degree C Working Relative Humidity: 20 Percent ?80 Percent Storage Relative Humidity: 20 Percent ?95 Percent Supported resolution USB2.0 MAX FPS 1936×1096: 20.4 1280×960: 35.3 640×480: 141.5 320×240: 355.9 2X2Bin :968×548: 20.4 USB3.0 MAX FPS(12bit/10bit) 1936×1096: 82.2/170 1280×960: 93.6/193.9 640×480: 184/381.2 320×240: 355.9/737.5 2X2Bin :968×548: 82.2/170 Camera Sensor IMX290LQR, IMX291LQR Diagonal 6.46 mm (Type 1/2.8) Square Pixel Array Color CMOS Image Sensor Back-Illuminated CMOS image Sensors with Improved Visible Light and Near Infrared Sensitivity that Support 1080p Sony has developed the approx. 2.13M effective pixel back-illuminated CMOS image sensors IMX290LQR and IMX291LQR with improved sensitivity in the visible-light and near infrared light regions for industrial applications. Astrophotography Performance ASI290MM offers very good performance for astrophotography. Low read noise, high dynamic range, QE peak about 80 Percent , AR protective window and much more.