International Space Station 800mm Photograph

Image credit:  Image Science and Analysis Laboratory, NASA Johnson Space Center (http://eol.jsc.nasa.gov)

MUDDY BRANCH PARK, NORTH POTOMAC 39.09N, 77.23W

The link is to the Wikipedia page on  North Potomac.

ZERO MAGNIFICATION IMAGE

REFLECTANCE SPECTRUM

1X MAGNIFICATION (BLACK LINE  = 1MM)

3X MAGNIFICATION (RED LINE  = 1MM)