English: CANEX-2 is grappled by the RMS during STS-52.
In operation during STS-52 above the payload bay (PLB) of Columbia, Orbiter Vehicle (OV) 102, is the Canadian Experiment 2 (CANEX-2) Space Vision System (SVS) experiment. Target dots have been placed on the Canadian Target Assembly (CTA), a small spacecraft, in the grasp of the Canadian-built remote manipulator system (RMS) arm. With the shuttle's closed circuit television (CCTV) system, the payload specialist monitors the movement of the 4-foot by 7-foot by 1.5-foot deployed spacecraft, whose surface is covered with many sets of dots of know spacing. As the satellite moved via the RMS, the SVS computer measured the changing position of the dots and provided real-time television display of the location and orientation of the CTA. This type of information is expected to help an operator guide the RMS or the Mobile Servicing System (MSS) of the future when berthing or deploying satellites. Also visible on the RMS is another CANEX-2 payload, the Material Exposure in Low Earth Orbit (MELEO