WE WILL BACKGROUND-?SUBTRACT AND DISSEMINATE VIA THE SDAC THE ENTIRE STEREO- A HELIOSPHERIC IMAGING DATA SET. WHILE COR-?1 AND COR-?2 IMAGERY IS STRAIGHTFORWARD TO ANALYZE USING THE PROJECT S LEVEL 1 DATA PRODUCTS THE HI-?1 AND HI-?2 DATA REQUIRE CONSIDERABLY MORE DATA PROCESSING: MULTIPLE FILTER STEPS BATCH PROCESSING AND BATCH RECOMBINATION ARE REQUIRED TO ACHIEVE FULL BACKGROUND SUBTRACTION OF THE STARFIELD FROM THE ORIGINAL DATA. THE FIVE-?STEP PROCESS DESCRIBED BY PI AND OTHERS(2011) REQUIRES BATCH-?PROCESSING THE IMAGES DATA IN STAGGERED BATCHES THAT ARE THEN RECOMBINED POST-?FACTO TOGETHER WITH A STARFIELD FITTING PROCESS THAT TRACKS ORBITAL AND POINTING VARIATIONS IN THE VISIBLE FIELD FROM STEREO- A. THE OUTPUT OF THE PIPELINE IS PHOTOMETRICALLY CALIBRATED FEATURE EXCESS-?BRIGHTNESS IMAGES THAT ALLOW TRACKING OF HELIOSPHERIC FEATURES OUT TO 1 A.U. AND BEYOND.