International Space Station  800mm Photograph

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

GARDEN KEY, DRY TORTUGAS NAT. PK. 24.63N, 82.92W

The link is to the National Park's Website.

ZERO MAGNIFICATION IMAGE

REFLECTANCE SPECTRUM

1X MAGNIFICATION (RED LINE = 1MM)

3X MAGNIFICATION (RED LINE = 1MM)