%0 Journal Article %A R.-S. Lu %A F. Roelofs %A V. L. Fish %A H. Shiokawa %A S. S. Doeleman %A C. F. Gammie %A H. Falcke %A T. P. Krichbaum %A J. A. Zensus %B ApJ %D 2016 %G eng %P 173 %R 10.3847/0004-637X/817/2/173 %T Imaging an Event Horizon: Mitigation of Source Variability of Sagittarius A* %V 817