Autoguiding: Starlock

StarLock is the revolutionary technology that makes target acquisition (GoTo) on your imaging sensor and accurate guiding during exposures completely automatic. StarLock uses 80 mm f/5 optics and a super wide-angle lens, each with their own camera that immediately captures a field star as dim as 11th magnitude and then guides to an accuracy of one arcsecond. There's no need for a separate guide or a computer.
StarLock automatically handles periodic error correction (PEC).