MESS MDIS MAP PROJ 5-COLOR MULTISPECTRAL RDR V1.0

This product is photometrically normalized to a solar incidence angle (i) = 30 degrees, emission angle (e) = 0 degrees, and phase angle (g) = 30 degrees at a spatial sampling of 128 pixels per degree. The map consists of a single tile covering the north polar quadrangle or 'Mercury chart' already defined by the USGS (H01), plus the northern parts of the 4 Mercury charts immediately to the south (H02-H05). The tile is composed of 5 bands corresponding to 5 of the 11 WAC filters.

The tile also contains 6 backplanes describing ancillary information. The subset of 5 of 11 available multispectral filters samples albedo and spectral slope over MDIS's wavelength range. Unlike the 3- and 8-color products, which were acquired with the WAC pointed near nadir, the 5-color map was acquired pointed at a nearly uniform phase angle near 30 degrees to minimize shadowing at the high latitudes of the Northern Volcanic Plains.