STS-82
Report # 08 
 Friday, February 14, 1997, 5:30 p.m. CST 
 
  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
Space Telescope.

  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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