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Inside of Hubble
Astronaut John Grunsfeld adjusts the conduit lines of
the cryo-cooler upon installing it.
Outside of Hubble
A great photo of the NCS Radiator being attached to Hubble's
aft shell. Earth provides a bright swirling backdrop.
Summary
During
Servicing Mission 3B the astronauts performed several
tasks such as replacing the Solar Arrays and installing
the new Advanced Camera for Surveys. Installing
the NCS was the trickiest business. The operation
took over 5 hours but was a complete success.
By April 19th, NICMOS Cooling System (NCS) achieved
the desired operational temperature of -315 � F
(-193 � C or 80 K), and had been stable for several
days. The NICMOS instrument was put into operational
mode in preparation for more functional tests.