Earlier, this year the space agency said the space telescope's pointing system is in need of new gyroscopes.
12.
Like the gyros, the telescope's three fine guidance sensors are crucial to the accuracy of Hubble's precision pointing system.
13.
During five spacewalks carried out with near surgical precision, the shuttle astronauts overhauled Hubble's electrical power and pointing systems.
14.
Their objective is to replace a half-dozen gyroscopes, key components in the telescope's pointing system, and to make other repairs.
15.
Astronomers were forced to halt Hubble observations last month after four gyros, crucial components of the telescope's pointing system, failed.
16.
The telescope has been shut down since Nov . 13, when its precision pointing system failed and the observatory went dormant.
17.
Unguided 120 mm mortars have accuracy of at maximum range, which can be reduced to with precision position and pointing systems.
18.
The loss disabled the pointing system that permits ground-based astronomers to aim the telescope at distant stars and galaxies for lengthy observations.
19.
This mission was the first pallet-only Spacelab mission and the first mission to operate the Spacelab Instrument Pointing System ( IPS ).
20.
They overhauled Hubble's electrical power and pointing systems, installed the new camera and revived a second imager with a new cooling system.
