CAPE CANAVERAL, Fla. --

A partial power outage at the International Space Station briefly interrupted today's spacewalk, knocking out robotic camera views of the two astronauts as they worked to install a spare antenna.

The outage happened two hours into the spacewalk by Atlantis crewmen Garrett Reisman and Stephen Bowen. The space station's main command-and-control computer suddenly crashed. A backup computer kicked in, but power temporarily was lost to some equipment, including the video monitors being used by the robot arm operator, Piers Sellers.

Reisman was perched on the end of the space station's 58-foot robot arm when Sellers lost his camera views. Bowen was working with connectors on the space station's framework. Both were told to stop what they were doing.

NASA said neither spacewalker was ever in any danger. In less than a half-hour, everything was back to normal, although the backup computer remained in charge.

"Ah, much better," Sellers said when his camera views came back.

Reisman enjoyed his ride on the robot arm. First, he carried over the antenna boom to its storage location on the space station. Then, after waiting for all the space station power to come back, he picked up the 6-foot dish antenna itself. Working by remote control from inside, Sellers moved the arm -- with Reisman on it -- back toward the installation site.

"I'm way the heck up here now," Reisman called out. "I might only be about 5-foot-4, but right now, I think I'm the highest person around. Woooo!"

"Yeah, like you're two-thirds of the way up of being like a Hubble guy," replied astronaut Michael Good from inside the space station. Good worked on the Hubble Space Telescope last May in a considerably higher orbit.