STS-82 Day 4 Highlights
Back to STS-82 Flight Day 03 Highlights:
- On Friday, February 14, 1997, 6:00 a.m. CST, STS-82 MCC Status Report # 7
- Astronauts Mark Lee and Steve Smith worked throughout the night in the
cargo bay of the Shuttle Discovery, conducting a spacewalk lasting six
hours and 42 minutes to upgrade the Hubble Space Telescope, which now
contains new science instruments for an expanded view of the universe.
- The first spacewalk of the second servicing mission of the Telescope
began at 10:34 p.m. Central time Thursday night when Lee and Smith
switched their spacesuits over to battery power. The spacewalk was
slightly delayed to enable ground controllers to assess the unexpected
movement of one of Hubble's solar arrays, which slewed from a
horizontal to a vertical position as Discovery's airlock was
depressurized. The motion was created by an apparent gust of air from
the airlock, but caused no damage to the array which was repositioned
- Once outside, Lee and Smith went right to work, opening the aft shroud
doors on Hubble to remove the Goddard High Resolution Spectrograph and
the Faint Object Spectrograph. The telephone-booth sized instruments
slid out of their compartments and were replaced by two brand new
instruments, the Space Telescope Imaging Spectrograph and the Near
Infrared Camera and Multi-Object Spectrometer. STIS was installed in
Hubble shortly before 1 a.m. Central time, followed almost two hours
later by the NICMOS. Payload controllers send commands to check the
health of the two instruments, which were declared alive and well and
ready for calibration over the next several weeks. The aft shroud
doors were finally closed as Lee and Smith stowed the old science gear
in protective containers for the trip back to Earth. With their work
successfully completed, Lee and Smith returned to Discovery's airlock
at 5:17 this morning to wrap up the first of four planned excursions
into the Shuttle's cargo bay.
- The two new instruments will increase Hubble's scientific
capabilities. The STIS will take light gathered by the telescope and
separate it into spectral components so that the composition,
temperature, motion, and other chemical and physical properties of
astronomical objects can be measured. NICMOS will allow Hubble to
take infrared observations of the universe, giving astronomers the
capability to view cosmic objects in non-visible light.
- Discovery's crew will begin an 8 hour sleep period at 9:25 a.m. CST
this morning before being awakened at 5:25 p.m. Upcoming on Flight Day
5 will be the second spacewalk of the mission by astronauts Greg
Harbaugh and Joe Tanner who will replace several engineering
components in Hubble.
- Discovery and the Hubble Space Telescope continue to orbit the Earth
every 90 minutes at an altitude of 370 statute miles with all of the
Shuttle's systems still operating in excellent condition.
- On Friday, February 14, 1997, 5:30 p.m. CST, STS-82 MCC Status Report # 8
- Astronauts Greg Harbaugh and Joe Tanner will have their chance to
venture into Discovery's payload bay this evening when they perform a
spacewalk to replace several engineering components in the Hubble
- Harbaugh and Tanner are scheduled to change out a malfunctioning
Fine Guidance Sensor and an Engineering/Science Tape Recorder. The FGS
is able to accurately point the telescope to its targets and is
capable of measuring the motion of stars with great accuracy. The
astronauts also will install an Optics Control Electronics Enhancement
Kit which will further increase the capability of the FGS.
- For most of the spacewalk, Tanner, wearing a spacesuit with diagonal
red markings around the legs, will be riding on the end of the robot
arm. Harbaugh, wearing a suit with broken red lines around the legs
and arms, will be able to move more freely around the payload bay. The
six-hour spacewalk is scheduled to begin between 9:30-10:30 p.m. CST.
- Also today, engineers successfully performed the verification tests
for the Space Telescope Imaging Spectrograph and the Near Infrared
Camera and Multi-Object Spectrometer. STIS and NICMOS were installed
early this morning by astronauts Mark Lee and Steve Smith.
- Discovery's crew received a Valentines Day greeting from their wives
at 5:25 p.m. today in form of the wake-up song."Higher Love" by Steve
Winwood. Discovery and the Hubble Space Telescope continue to orbit
the Earth every 90 minutes at an altitude of 370 statute miles with
all of the Shuttle's systems still operating in excellent condition.
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