Photography experts told National Geographic that a wide-angle lens, an aperture or F-stop of four or less and a focus set to the furthest possible setting are recommended to capture the northern lights. If using a smartphone, NOAA suggests turning on night mode and disabling flash.

While it’s tough to predict how widespread the viewing opportunity may be on any given night, forecasters say the Northern Lights on Wednesday are favored to be visible from states in the far northern U.S. but possibly as far south as Pennsylvania and upstate New York.

The aurora borealis, or Northern Lights, is captivating skywatchers across the United States this week due to heightened solar activity.