International Space Station 400 mm Photograph

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

GYPSUM SAND DUNES NEAR KNOLLS 40.72N, 113.29W

The link is to the Utah Geological Survey page on Knolls.

ZERO MAGNIFICATION IMAGE

REFLECTANCE SPECTRUM

1X MAGNIFICATION (RED LINE   = 1MM)

3X MAGNIFICATION (RED LINE   = 1MM)