In 1987 Dan Gray founded Technical Marine Services. TMS specializes in developing industrial controls including component scale electronics, industrial computers and controllers, PID controls, etc. He later branch out into developing micro stepper control of telescopes, with goto and tracking, ultimately culminating in the development of the Servo I controller, and founded Sidereal Technology. More recently, he has teamed up with members of the astronomy community such as Howard Banisch on projects such as imaging the pulsar in M1. Speckle interferometry is his latest collaboration with Howard.