Large-Scale Photospheric Motions: First Results from an Extraordinary Eleven-Hour Granulation Observation

We present a preliminary report of a unique 11-hr observation of solar granulation obtained at the Swedish Vacuum Solar Telescope (SVST) on La Palma, Canary Islands, on 5 June 1993. The high quality of the granulation images provided correlation tracking data during every observing minute of this run. A supergranular outflow and a sink (inflow) with associated vorticity lasted for the entire time.