The WAC farside low-sun mosaic is comprised of 1686 images acquired between July 2010 and July 2012. The images were selected to have similar incidence angles to the nearside "no-slew" mosaic. The top-most layer is from a two-week period in June-July 2011, and the remaining images were selected to match the lighting as closely as possible, and were used to fill small gores. The imaging periods used (from the top-most layer in the mosaic to the bottom-most) were 2011-06-28 to 2011-07-15, 2011-01-15, 2010-07-04 to 2010-08-15, 2012-01-06 to 2012-01-24, and 2012-06-22 to 2012-07-01.

All images were map projected onto the GLD100 (WAC derived 100m/pixel DTM) with 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). To reduce brightness discrepancies across image boundaries, all images were corrected to a common photometric geometry using a Hapke model (Sato, H. et al, 2014, Resolved Hapke parameter maps of the Moon). This mosaic uses only the 643 nm band of the WAC.

The WAC farside mosaic is archived in six regional tiles at three different resolutions: 100 meters/pixel, 128 pixels/degree and 256 pixels/degree. Four of the tiles are equirectangular projections that encompass 60° latitude by 90° longitude (90° latitude by 90° longitude for the 128 pixels/degree products). In addition, two polar stereographic projections are available for each pole from 60° to the pole.

WAC Farside Low-Sun Mosaic

100 meters per pixel

Wac_roi_farside_dusk_p900n0000_100m Wac_roi_farside_dusk_p900s0000_100m
Wac_roi_farside_dusk_e300n1350_100m Wac_roi_farside_dusk_e300n2250_100m
Wac_roi_farside_dusk_e300s1350_100m Wac_roi_farside_dusk_e300s2250_100m

256 pixels per degree

Wac_roi_farside_dusk_p900n0000_256p Wac_roi_farside_dusk_p900s0000_256p
Wac_roi_farside_dusk_e300n1350_256p Wac_roi_farside_dusk_e300n2250_256p
Wac_roi_farside_dusk_e300s1350_256p Wac_roi_farside_dusk_e300s2250_256p

128 pixels per degree

Wac_roi_farside_dusk_p900n0000_128p Wac_roi_farside_dusk_p900s0000_128p
Wac_roi_farside_dusk_e450n1350_128p Wac_roi_farside_dusk_e450n2250_128p
Wac_roi_farside_dusk_e450s1350_128p Wac_roi_farside_dusk_e450s2250_128p

Additional 100 meters per pixel downloads

Additional 128 pixels per degree downloads

Additional 256 pixels per degree downloads