... ATNF Home . About ATNF . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . ... Before we can make use of this new relationship to constrain models, we must first convert from observable quantities (surface brightnesses) to the sorts of parameters (stellar surface density, star formation rate) tracked by the models. ...