http://msnbc.msn.com/id/13587692/

NASA aims for quick Hubble fix
Balky camera could be back on line July 3, agency says

The Hubble Space Telescope's main camera could be back on line July 3 
without any loss of performance, the space agency announced Tuesday.

A NASA board will meet Thursday at the Goddard Space Flight Center to 
determine how to deal with power problems that have shut down the 
Advanced Camera for Surveys. Engineers "anticipate instrument 
observations will resume no earlier than July 3, with no degradation to 
performance," the NASA statement said.

Ed Ruitberg, deputy associate director of the Astrophysics Division at 
Goddard, said NASA engineers believe they are "very close to fully 
understanding the issue experienced with the camera and we are going to 
resolve it."

"However, before we proceed with any actions, we want to have a review 
board meeting to assess both the troubleshooting and the proposed 
solution," Ruitberg said.

Ground controllers received indications June 19 that voltage readings on 
the camera's power supply were outside of their acceptable range, 
causing the camera to shut down. The camera was taken off line while the 
problem is being studied, although other instruments on board the 
orbiting observatory continue to function.

NASA officials have said a bad transistor may be responsible for the 
voltage problems.

The Advanced Camera for Surveys, installed during a March 2002 servicing 
mission, increased Hubble's vision 10 times and has given the clearest 
pictures yet of galaxies forming in the very early universe.

The so-called third-generation instrument consists of three electronic 
cameras, filters and dispersers that detect light from the ultraviolet 
to the near infrared. The instrument was developed jointly by Goddard, 
Johns Hopkins University, Ball Aerospace in Boulder, Colo., and the 
Baltimore-based Space Telescope Science Institute, which coordinates use 
of the orbiting observatory.


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