Field Samples & Lab Spectra - Arranged in chronological order of collection (date_time encoded in filename).

Laboratory spectra measured with a 2002 ASD Fieldspec Pro.  Samples illuminated w/ a LowellPro lamp, Ushio Halogen bulb (JC14.5V-50WC) and a Lambda DC power supply.

Each lab sample measured 4 times from opposing azimuths of illumination.  5 MP f ield site & sample images shot with 2004 Pentax Optio 555 exposed for neutral balanced histogram.