Using these media

The progression and deformation of lensed images throughout a microlensing event. Here the coordinates are centered on the lens and the relative movement of the source is depicted as a series of open circles. The images of the source created are shown as filled ovals and the line indicates which two images would be observed at a single time during the event.

Y. Tsapras
Right-click here to download
Deformation of lensed images