OBJECTIVES: TO PRODUCE HIGHER-RESOLUTION DIGITAL TERRAIN MODELS OF PLUTO AND CHARON THAN WILL BE DEPOSITED BY THE NEW HORIZONS TEAM INTO THE PDS BY USING ADDITIONAL HIGH RESOLUTION IMAGES AND PHOTOCLINOMETRY IN NEAR-TERMINATOR AREAS. WE WILL ALSO TAKE ADVANTAGE OF LIMB PROFILES THAT TRANSECT AREAS OF BOTH BODIES WHERE HIGH-RESOLUTION COVERAGE IS NOT AVAILABLE TO EXTEND TOPOGRAPHIC INFORMATION TO THE NON-ENCOUNTER HEMISPHERES OF PLUTO AND CHARON. METHODOLOGY: NEW HORIZONS REVEALED COMPLEX AND DIVERSE GEOLOGIC PROCESSES ON THE ICY DWARF PLANET PLUTO AND ITS MOON CHARON. THE TOPOGRAPHIC EXPRESSIONS OF THESE WORLDS REVEAL THEIR GEOLOGIC HISTORIES AND ARE EQUALLY COMPLEX WITH RELIEF OF MULTIPLE KILOMETERS OVER SHORT DISTANCES. THE CHARTER OF THE NEW HORIZONS MISSION TO PLUTO WAS TO COMPLETE A GLOBAL BASE MAP AND TOPOGRAPHIC MAP OF PLUTO AND CHARON USING STEREOGRAMMETRY WHICH HAS NOW BEEN DONE AND WILL BE SUBMITTED TO THE PDS THIS FALL. IN THIS PROPOSED WORK WE WILL AUGMENT AND IMPROVE ON THESE MAPS USING ADDITIONAL HIGH-RESOLUTION IMAGES FROM THE NEW HORIZONS IMAGING SYSTEMS TO BOTH IMPROVE THE RESOLUTION OF THE THE TOPOGRAPHY LOCALLY BY 3-TO-5 TIMES THE CURRENT VALUE AND TO EXTEND OUR TOPOGRAPHIC MAPPING TO AREAS NOT COVERED BY STEREOGRAMMETRY. FIRST WE WILL PRODUCE HIGH-RESOLUTION STEREO PRODUCTS FOR THE 3 LORRI "NOODLES" THAT TRACK ACROSS SPUTNIK PLANITIA AND THAT WERE NOT PROCESSED AS PART OF THE OFFICIAL NEW HORIZONS ARCHIVAL DATA SETS. EVEN SO AS STEREOGRAMMETRIC TOOLKITS RELY ON SCENE-RECOGNITION WHICH BLUR THE TOPOGRAPHY BY 3-5 TIMES THE LOW RESOLUTION COMPONENT OF THE STEREO OBSERVATIONS THIS DEGRADES THE MAP RESOLUTION SIGNIFICANTLY. WE WILL USE SHAPE-FROM-SHADING (PHOTOCLINOMETRY) TO MAP AREAS WITH LOW SUN ILLUMINATION NEAR THE TERMINATOR DURING THE ENCOUNTER TO LOCALLY IMPROVE DEM RESOLUTION TO ALMOST THE ORIGINAL PIXEL-SCALE OF THE ORIGINAL IMAGES ~315 M/PIXEL USING THE MVIC SCAN AND 125-TO-80 M/PIXEL IN THE LORRI IMAGE "NOODLES". THESE WILL PROVIDE THE ONLY USABLE TOPOGRAPHIC INFORMATION IN "GLACIAL" VALLEYS SMALL CRATERS AND FOR THE CELLULAR PATTERN AND SMALL PITS COMMON ACROSS SPUTNIK PLANITIA. BOTH THE STEREOGRAMMETRY AND PHOTOCLINOMETRY TECHNIQUES PRODUCE RESULTS ONLY OVER THE HIGH-RESOLUTION ENCOUNTER HEMISPHERE WHICH IS ABOUT 40% OF THE SURFACES OF EACH BODY. IN OTHER POORLY RESOLVED AREAS OF THE SURFACE SIGNIFICANT RELIEF WAS APPARENT (OR ITS ABSENCE WAS APPARENT) IN AREAS VIEWED ON THE LIMB OF THE DISK OF EACH BODY. IN SOME CASES BACKLIGHTING DUE TO BRIGHT ATMOSPHERIC HAZE REVEALED RELIEF ALONG LIMB VIEWS OF THE DISC OF PLUTO THAT WOULD OTHERWISE HAVE BEEN UNSEEN. WE WILL USE LIMB PROFILES AS NARROW STRIPS OF TOPOGRAPHIC DATA TO EXAMINE THE RUGGEDNESS AND RELIEF OF AREAS AND GEOLOGIC UNITS THAT ARE NOT OTHERWISE RESOLVED WELL OR WERE EVEN IN DARKNESS IN 2015. THESE TECHNIQUES WILL ALLOW RESEARCHERS TO CHARACTERIZE THE TOPOGRAPHY OF AS MUCH OF PLUTO AND CHARON AS IS POSSIBLE FROM THE NEW HORIZONS DATA SET. RELEVANCE: THE RESULT OF FUNDING THIS PDART PROPOSAL WILL BE SEVERAL TERRAIN PRODUCTS AND DATA SETS OF PLUTO AND CHARON DERIVED FROM SPACECRAFT DATA THAT WOULD NOT OTHERWISE BE PRODUCED AND ARCHIVED BY THE NEW HORIZONS PROJECT. ENSURING THAT THESE DATA GET CREATED BY OUR PROPOSAL TEAM (WHO ARE INTIMATELY KNOWLEDGEABLE ABOUT THE INSTRUMENTS AND THE MISSION) AND RELEASED TO THE PUBLIC WILL ENSURE THAT ANY SCIENTIST WHO WANTS TO PERFORM TOPOGRAPHIC STUDIES OF THESE WORLDS WILL HAVE ACCESS TO THE BEST POSSIBLE TERRAIN DATA AVAILABLE. THESE PROPOSED OUTCOMES ARE DIRECTLY RELEVANT TO THE PDART CALL WHICH SEEKS "TO INCREASE THE AMOUNT AND QUALITY OF DIGITAL INFORMATION AND DATA PRODUCTS AVAILABLE FOR PLANETARY SCIENCE RESEARCH AND EXPLORATION ..." THE RESULTING DATA PRODUCTS WILL BE ARCHIVED ACCORDING TO THE PDART REQUIREMENTS.