==============================
                              GASPRA ANIMATION
                                March 5, 1993
                       ==============================

     A Gaspra animation is now available at the Ames Space Archives.  This
animation is courtesy of Jeff Alu.  The animation was formed from 11 images
taken by the Galileo spaecraft shortly before its closest approach to the
asteroid in October 1991.  The animation is in FLI format.  Using anonymous
ftp, the animation can be obtained from:

        ftp:      ames.arc.nasa.gov (128.102.18.3)
        user:     anonymous
        cd:       pub/SPACE/ANIMATION
        files:
                  gaspra.fli
                  gaspra.txt (see below)

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gaspra.txt

     This animation consists of 11 images taken by the Galileo
spacecraft as it flew by the asteroid 951 Gaspra on October 29, 1991.
The animation shows Gaspra growing progressively larger in the field
of view of Galileo's solid-state imaging camera as the spacecraft
approached the asteroid.  Sunlight is coming from the right.
Gaspra is roughly 17 kilometers (10 miles) long, 10 kilometers
(6 miles) wide.

     The first frame of the animation (smallest image) was taken
5 3/4 hours before closest approach when the spacecraft was 164,000
kilometers (102,000 miles) from Gaspra, the last frame (largest image)
at a range of 16,000 kilometers (10,000 miles), 30 minutes before closest
approach.

     Gaspra spins once in roughly 7 hours, so these images
capture almost one full rotation of the asteroid.  Gaspra spins
counterclockwise; its north pole is to the upper left, and the
"nose" which points upward in the first image, is seen rotating
back into shadow, emerging at lower left, and rotating to upper
right.  Several craters are visible on the newly seen sides of
Gaspra, but none approaches the scale of the asteroid's radius.
Evidently, Gaspra lacks the large craters common on the surfaces
of many planetary satellites, consistent with Gaspra's
comparatively recent origin from the collisional breakup of a
larger body.
     ___    _____     ___
    /_ /|  /____/ \  /_ /|     Ron Baalke         | baalke@kelvin.jpl.nasa.gov
    | | | |  __ \ /| | | |     Jet Propulsion Lab |
 ___| | | | |__) |/  | | |__   M/S 525-3684 Telos | It's kind of fun to do
/___| | | |  ___/    | |/__ /| Pasadena, CA 91109 | the impossible. 
|_____|/  |_|/       |_____|/                     | Walt Disney




                       ==============================
                        GALILEO EARTH-MOON ANIMATION
                               March 7, 1993
                       ==============================

     The Galileo Earth-Moon Conjunction animation is now available in
additional formats at the Ames Space Archives.  The animation was formed from 
46 images taken by Galileo spaecraft shortly after its Earth flyby on
December 16, 1992.  The new formats are FLC and Quicktime.
The Quicktime version only needs 1MB of RAM to run.  The animation
is available using anonymous ftp to:

        ftp:      ames.arc.nasa.gov (128.102.18.3)
        user:     anonymous
        cd:       pub/SPACE/ANIMATION
        files:
                  emconj.flc        - Earth-Moon animation in FLC format
                  emconj.txt        - Caption file (see below)
                  Earth_Moon_qt.hqx - Earth-Moon animation, Quicktime format
                                      (Binhexed)
                  Earth_Moon_qt.cpt - Earth_Moon animation, Quicktime format
                                      (MacBinary)

     Software to run the FLC version is also available at Ames.  Play79
is used for the IBM PC, and a special version of the xanim program was
created to run the animation which runs under X-Windows on Unix.

        ftp:      ames.arc.nasa.gov (128.102.18.3)
        user:     anonymous
        cd:       pub/SPACE/SOFTWARE
        files:
                  play79.zip   - IBM PC
                  xanim.Z      - Unix
                  xanim.readme -
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emconj.txt

Emconj.flc is in Autodesk Animator .fli format for MSDOS PCs and the X
windowing system. The file can be viewed using the play79 program for
MSDOS (available in the pub/SPACE/SOFTWARE directory on
ames.arc.nasa.gov) or the freely available xanim package for X.

This is part of a time-lapse sequence taken by the Galileo spacecraft on
December 16, 1992, eight days after its flyby of the Earth/Moon system
en route to Jupiter. The full color sequence utilized the 0.968, 0.727 and
violet filters; this reduced, black-and-white version was made with the 0.968
micron filter so that both vegetated and unvegetated land masses appear bright
in contrast to the oceans. The 46 frames span 15 hours of motion by the Earth,
Moon and spacecraft as viewed from the perspective of Galileo, with South at
the top. Visible are the Pacific basin, Australia, Southeast Asia, India, and
finally Arabia and the horn of Africa. A remarkable feature of this sequence
is the specular reflection or sun glint from the sea surface. Depending on the
roughness of the water the extent of specular reflection varies rapidly,
expanding over rough seas and contracting to a point over still oceanic pools
such as near the west coast of Australia.

Source: Paul Geissler, Larry Kendall, and Michael Nolan, University of
Arizona, with thanks to M.J.S. Belton and the Galileo Imaging Team.
     ___    _____     ___
    /_ /|  /____/ \  /_ /|     Ron Baalke         | baalke@kelvin.jpl.nasa.gov
    | | | |  __ \ /| | | |     Jet Propulsion Lab |
 ___| | | | |__) |/  | | |__   M/S 525-3684 Telos | It's kind of fun to do
/___| | | |  ___/    | |/__ /| Pasadena, CA 91109 | the impossible. 
|_____|/  |_|/       |_____|/                     | Walt Disney