We introduce a novel search technique that can identify trans-neptunian objects in three to five exposures of a pointing within a single Hubble Space Telescope orbit . The process is fast enough to allow the discovery of candidates soon after the data are available . This allows sufficient time to schedule follow up observations with HST within a month . We report the discovery of 14 slow-moving objects found within 5 ^ { \circ } of the ecliptic in archival data taken with the Wide Field Channel of the Advanced Camera for Surveys . The luminosity function of these objects is consistent with previous ground-based and space-based results . We show evidence that the size distribution of both high and low inclination populations is similar for objects smaller than 100 km , as expected from collisional evolution models , while their size distribution differ for brighter objects . We suggest the two populations formed in different parts of the protoplanetary disk and after being dynamically mixed have collisionally evolved together . Among the objects discovered there is an equal mass binary with an angular separation \sim 0 \farcs 53 .