The WAC nearside "no-slew" mosaic is comprised of 2257 images acquired between December 2010 and December 2011. The majority of the images used are from a three-week campaign in December 2010, during which the spacecraft did not slew, in order to build up a nearly seamless map of the lunar nearside under consistent lighting. 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 2010-12-07 to 2010-12-27, 2011-12-07 to 2011-12-12, and 2011-06-02 to 2011-06-17.

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 nearside 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 Nearside No-Slew Mosaic

100 meters per pixel

Wac_roi_nearside_dawn_p900n0000_100m Wac_roi_nearside_dawn_p900s0000_100m
Wac_roi_nearside_dawn_e300n3150_100m Wac_roi_nearside_dawn_e300n0450_100m
Wac_roi_nearside_dawn_e300s3150_100m Wac_roi_nearside_dawn_e300s0450_100m

256 pixels per degree

Wac_roi_nearside_dawn_p900n0000_256p Wac_roi_nearside_dawn_p900s0000_256p
Wac_roi_nearside_dawn_e300n3150_256p Wac_roi_nearside_dawn_e300n0450_256p
Wac_roi_nearside_dawn_e300s3150_256p Wac_roi_nearside_dawn_e300s0450_256p

128 pixels per degree

Wac_roi_nearside_dawn_p900n0000_128p Wac_roi_nearside_dawn_p900s0000_128p
Wac_roi_nearside_dawn_e450n3150_128p Wac_roi_nearside_dawn_e450n0450_128p
Wac_roi_nearside_dawn_e450s3150_128p Wac_roi_nearside_dawn_e450s0450_128p

Additional 100 meters per pixel downloads

Additional 128 pixels per degree downloads

Additional 256 pixels per degree downloads