CONTROLLED LROC NARROW ANGLE CAMERA HIGH RESOLUTION MOSAICS . S. M. Klem 1 , M. R.

Introduction: Controlled mosaics from Lunar Reconnaissance Orbiter Camera (LROC) Narrow Angle Camera (NAC) [1] image sequences provide an accurate cartographic framework for a host of scientific and engineering studies. Mosaics are composed of overlapping images acquired over time or from sets of images targeted across sequential orbits. NAC image pairs are first tied to an existing controlled map product: either a NAC Digital Terrain Model (DTM) [2] or an existing controlled mosaic of the area. If there is neither a DTM nor a controlled mosaic available for the area, a different pair of NAC images that have Lunar Orbiter Laser Altimeter (LOLA) cross-over smithed Spacecraft Position Kernels (SPKs) [3] are used. The images are map projected on a pixel-by-pixel basis to the WAC GLD100 [4] for a shape model. After the NAC images for the new controlled mosaic are tied to the best existing ground control, they are mosaicked together.