Technology: Apollo 11 moon landing and the RAAF reservist the John Colvin story

At the Tidbinbilla Deep Space Tracking there is a small display placed in a corner that briefly marks the contribution of RAAF Reservist Dr John Colvin to the Apollo Space Program. John Colvin's significant contribution to the pioneering years of the Apollo Space Program has largely been forgotten, but with the pending 50th anniversary of the Apollo 11 Moon Landing it is fitting to restate his contribution to the first successful landing on the Moon.