 The infrastructure of the telescope was upgraded by replacing a "Fine Guidance Sensor" that controls the telescope's directional system, installing a set of six new gyroscopes, replacing batteries, and installing a new outer blanket layer to provide improved insulation.The payload bay elements were the Super Lightweight Interchangeable Carrier (SLIC) which held the Wide Field Camera 3, new batteries, and a radiator; the ORU Carrier which stored the Cosmic Origins Spectrograph and FGS-3R instruments; the Flight Support Structure (FSS) which held onto the Hubble during repairs; the Multi-Use Lightweight Equipment Carrier (MULE) which held support equipment and the Relative Navigation Sensor (RNS) Experiment.Along with the collectible items that are flown on shuttle missions, such as mission patches, flags, and other personal items for the crew, were an official Harlem Globetrotters basketball and a basketball that Edwin Hubble used in 1909 when he played for the University of Chicago.