 By October 1957, Operation Moonwatch had some 200 teams ready to go into action, including observers in Hawaii  and Australia 

Whipple envisioned a global network of specially designed instruments that could track and photograph satellites.This network, aided by a corps of volunteer satellite spotters and a computer at the MIT Computation Center, would establish ephemerides – predictions of where a satellite will be at particular times.The instruments at these stations were eventually designed by Dr. James G. Baker and Joseph Nunn and hence known as Baker-Nunn cameras.