Improves the USB transfer speed, makes the data transfer rate of up to 39 Mbyte / s, the frame rate is below 1600*1200, near the actual transmission speed limit. Uses 1.25 inch size design of the shape and is compatible with mainstream eyepiece telescope microscope interfaces. Compact size, lightweight, very suitable for the construction of portable devices, as well as off-axis guide star star system guide. Automatic balance white background, automatic color compensation, dynamic image. High speed mode and Camera mode can be exchanged.