There is a similar technique in astronomy, though much slower, called drift-scan imaging. Typically when you take a long exposure astronomical image the telesc

There is a similar technique in astronomy, though much slower, called drift-scan imaging. Typically when you take a long exposure astronomical image the telescope has to rotate to track the star as it moves across the sky. So in traditional imaging you track the object, make your exposure, and then when the exposure is done you read out the image. The downside is that while you're reading out the image you can't do anything else and for an astronomical CCD it can take on the order of a minute or so. So you lose ~5% of your observing time just to reading out images. (It's more if you have to slew to different locations on the sky.) In drift-scan imaging you keep the telescope pointed at a fixed location and you continuously read out the image at a rate that matches the motion of the stars across the field of view. This allows you to continuously collect imaging from a strip across the sky.