Workers watch while the Advanced Camera for Surveys ACS is lowered into the Axial Science Instrument Protective Enclosure ASIPE.

In the Vertical Processing Facility, workers watch while the Advanced Camera for Surveys (ACS) is lowered into the Axial Science Instrument Protective Enclosure (ASIPE). The ACS is part of the payload on the Hubble Space Telescope Servicing Mission, STS-109. The goal of the mission is to service the HST, replacing Solar Array 2 with Solar Array 3, replacing the Power Control Unit, removing the Faint Object Camera and installing the ACS, installing the Near Infrared Camera and Multi-Object Spectrometer (NICMOS) Cooling System, and installing New Outer Blanket Layer insulation. Mission STS-109 is scheduled for launch no earlier than Feb. 21, 2002