Astronauts scan Atlantis for damage

Shuttle Atlantis astronauts yesterday scanned fragile heat shields aboard their spacecraft for signs of damage from launch debris, as they raced toward a rendezvous with the Hubble Space Telescope.
Early results of yesterday's 10-hour long inspection of the wings, nose and belly of Atlantis by the seven shuttle astronauts revealed no obvious signs of damage.
Atlantis was on course to rendezvous with the 560-kilometer (350-mile) high observatory Wednesday shortly after 1600 GMT.
As mission commander Scott Altman steers his ship close to the observatory, astronaut Megan McArthur will reach out with the shuttle's robot arm to grab the 13.2-meter (43-foot) long telescope.
Using the mechanical limb like a construction crane, McArthur will mount the telescope upright atop a circular work platform in the shuttle's cargo bay.
Early Tuesday, the astronauts sent commands that positioned the platform to await Hubble's arrival. They checked out the space suits that four of the shuttle's astronauts will wear during five spacewalks, as well as hand tools they will use for the task. The tool kit includes 180 pieces of equipment, most custom-made for Hubble's overhaul.
Monday's launch initiated a challenging, 11-day mission devoted to a final refurbishment of the 19-year-old space telescope, a collaboration between NASA and the European Space Agency.
The upgrade should extend Hubble operations by at least five years and equip the world's best known telescope to search for signs of the earliest star systems, provide a deeper understanding of dark energy and dark matter, and about the way planets form.
After lift-off, mission managers counted four small pieces of unidentified debris moving near Atlantis in tracking camera views of the shuttle's climb to orbit.
A brief camera survey of the spacecraft's crew compartment by the astronauts after launch revealed no obvious signs of damage, however.
"We have a great vehicle," said Bill Gerstenmaier, NASA's associate administrator for space operations. "This is a great start to a very challenging mission."
Tuesday's damage inspection of the wings and underside of the shuttle will test Gerstenmaier's optimism. The shuttle crew used a camera and laser-tipped extension of the shuttle's robot arm to carry out Tuesday's damage survey. The imagery was transmitted to Mission Control, where experts were to assess the pictures.
NASA expects to have preliminary results before the shuttle astronauts start the first of their spacewalks early Thursday.
The spacewalkers have trained to equip Hubble with new batteries and gyroscopes to fortify Hubble's electrical power and steering systems, one of the mission's highest priorities.
The spacewalkers will replace a computer that prepares the telescope for celestial observations and formats the pictures for transmission to Earth. The science instrument command and data handling computer experienced a partial electrical failure in late September, forcing NASA to postpone the mission from October to May while it prepared a replacement.