The doors of the payload canister reveal to service the Hubble Space Telescope that have been installed in it.

In the Payload Hazardous Servicing Facility at NASA's Kennedy Space Center, the open doors of the payload canister reveal the first of the carriers associated with the STS-125 mission to service the Hubble Space Telescope that have been installed in it. Four carriers in all will be transferred to Launch Pad 39A. At the pad, all the carriers will be loaded into space shuttle Atlantis’ payload bay. Launch of Atlantis is targeted for Oct. 10. Photo credit: NASA/Jack Pfaller