All of the payload elements on mission STS-109 are installed in Columbia's payload bay.

All of the payload elements on mission STS-109 are installed in Columbia's payload bay: Solar Array 3, a new Power Control Unit, the Advanced Camera for Surveys (ACS), Near Infrared Camera, Multi-Object Spectrometer (NICMOS) Cooling System, and New Outer Blanket Layer insulation. Four mission specialists will perform five scheduled spacewalks to complete system upgrades to the telescope with these components. The STS-109 crew includes Commander Scott D. Altman, Pilot Duane G. Carey, and Mission Specialists John M. Grunsfeld, Nancy J. Currie, James H. Newman, Richard M. Linnehan and Michael J. Massimino. Launch is scheduled for Feb. 28, 2002, at 6:48 a.m. EST (11:48 GMT). Photo by Carl Winebarger