Recenter

The Recenter command returns the focus of the active window to the center.

If you have panned or scrolled your view repeatedly and you are not sure what part of the image you are looking at, you can activate this command to return to the center of the window.

To activate this command:

Select View > Recenter.
Click the Recenter button on the lower left corner of the View window.
Press [Shift]+[Space], the default keyboard shortcut.