charge-coupled device (CCD)

A charge-coupled device (CCD) is a type of electronic sensor used to capture images, commonly found in digital cameras and telescopes. It consists of an array of tiny, light-sensitive elements called pixels. When light hits these pixels, it converts into electrical signals proportional to the light's intensity. These signals are then transferred across the device and processed to produce a digital image. CCDs are known for their high sensitivity, excellent image quality, and low noise, making them ideal for applications requiring detailed, accurate imaging.