This year marks the 70th anniversary of the publication of the seminal paper by Ron Bracewell titled “Strip integration in Radio Astronomy”, which considered the construction of two-dimensional images from one-dimensional scans of a celestial radio source with a range of position angles. This was required to obtain a solar map from Chris Christiansen’s early grating-array observations, and with much wider applications. A Bracewell@70 meeting is being held this week at Macquarie University to discuss imaging science in astronomy, medical science, satellite imaging, robotics, and other fields. The picture above shows Ron Ekers with a slide summarising Ron Bracewell’s career, which included two periods at CSIRO before moving to Stanford University.