Moon Lunar Reconnaissance Orbiter WAC Global Morphologic Map survey collection

The WAC maps the whole Moon in one month, however the solar incidence angle at the equator changes about 28deg from the beginning to the end of the month. To even out the incidence angle variations, the mosaic is comprised of data collected over three periods (1/20/2010 to 1/28/2010, 5/30/2010 to 6/6/2010, 7/24/2010 to 7/31/2010) (Table 1).

Some gores were filled with data taken at other times. The non-polar images were map projected onto the GLD100 (WAC derived 100m/pixel DTM) while polar images were map projected on the LOLA shape model (80deg to 90deg N/S) and the GLD100 (60deg to 80deg N/S). Accurate positioning of each WAC image was ensured using ephemeris provided by the LOLA and GRAIL team and an improved camera geometry model (Speyerer, E.J. et al, 2014, Pre-flight and On-orbit Geometric Calibration of the Lunar Reconnaissance Orbiter Camera).