By Ron Cowen
The main camera on the Hubble Space Telescope is operating normally again after being blinded for 2 weeks by an electrical failure.
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The orbiting observatory’s Advanced Camera for Surveys, which has the highest resolution and largest field of view of Hubble’s three cameras, abruptly shut down on June 19. Engineers discovered that a power supply similar to that in a laptop computer had stopped providing the proper voltage to two of the camera’s three detectors.