Space Shuttle  100mm Photograph

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

LUBAO, PAMPANGA -  14.92N, 120.55E

The link is to the USGS website on Mt. Pinatubo

ZERO MAGNIFICATION IMAGE

REFLECTANCE SPECTRUM

Ward's Scientific Volcanic Ash Sample

3X MAGNIFICATION (RED LINE  = 1MM)