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Date: Thu, 21 Jun 1990 02:45:12 -0400 (EDT)
Subject: SPACE Digest V11 #552

SPACE Digest                                     Volume 11 : Issue 552

Today's Topics:
	       Hubble Space Telescope Update - 06/20/90
Ulysses spacecraft briefing and showing at KSC on June 26 (Forwarded)

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----------------------------------------------------------------------

Date: 21 Jun 90 05:24:13 GMT
From: usc!elroy.jpl.nasa.gov!forsight!jato!mars.jpl.nasa.gov!baalke@ucsd.edu  (Ron Baalke)
Subject: Hubble Space Telescope Update - 06/20/90


                            Hubble Space Telescope Update
                                  June 20, 1990


     The telescope's mirror was moved last night but it was commanded back
to the position it was in before the previous tilt and decentering.  Wide
Field Planetary Camera (WFPC) images taken after the move appear to confirm
that the secondary mirror is back where it was 5 days ago.  This decision was
reached after extended discussions over the state of the current focus and
how next to proceed.  One of the primary reasons to move the mirror back to
the previous position was that it has become apparent that since the tilt
and decentering movement the Fine Guidance Sensors (FGS's) have had trouble
holding fine lock, even on stars that they had held in fine lock before.
Without the ability to go into fine lock the necessary wavefront sensor (WFS)
data cannot be obtained.  So, it was decided to go back to the previous
position and gather more WFS data.

     The Astronomy team (AST) reported that they found the phantom star that
failed the guide star acquisition for the first WFPC 10-image test.  The
Faint Object Camera (FOC), the Faint Object Spectrograph (FOS), the Goddard
High Resolution Spectrograph (GHRS) and the High Speed Photometer (HSP) are
all on hold.

     The WFPC is in full operate mode.  The attempt to get 10 images through
3 filters went very well as did the two Bootstrap support images.  The next
WFPC images are scheduled for June 21 at around 3 PM EDT.

       _   _____    _
      | | |  __ \  | |       Ron Baalke           |  baalke@mars.jpl.nasa.gov
      | | | |__) | | |       Jet Propulsion Lab   |  baalke@jems.jpl.nasa.gov
   ___| | |  ___/  | |___    M/S 301-355          |
  |_____/ |_|      |_____|   Pasadena, CA 91109   |

------------------------------

Date: 21 Jun 90 06:25:03 GMT
From: trident.arc.nasa.gov!yee@ames.arc.nasa.gov  (Peter E. Yee)
Subject: Ulysses spacecraft briefing and showing at KSC on June 26 (Forwarded)

Paula Cleggett-Haleim
Headquarters, Washington, D.C.                      June 20, 1990
(Phone:  202/453-1547)

Debra Rahn
Headquarters, Washington, D.C.
(Phone:  202/453-8455)

George H. Diller
Kennedy Space Center, Fla.
(Phone:  407/867-2468)


EDITORS NOTE:  N90-46

ULYSSES SPACECRAFT BRIEFING AND SHOWING AT KSC ON JUNE 26


     The European Space Agency's Ulysses spacecraft, a scientific
payload to be deployed by the Space Shuttle Discovery in early
October, will be the focus of a briefing and photo opportunity at 
the Kennedy Space Center, Fla., Tuesday, June 26, at 11 a.m. EDT.

     Ulysses is a NASA/ESA international project designed to
study the poles of the Sun and interstellar space above and below
the poles.  Ulysses will be launched on a planetary trajectory to
use the gravity of Jupiter to slingshot the spacecraft out of the 
solar ecliptic plane and toward the south pole of the Sun.

     Participating in the briefing will be:

       John Conway, Director of Payload Management and Operations
         NASA Kennedy Space Center

       Peter Wenzel, Ulysses Project Scientist
         European Space Agency

       Willis Meeks, Ulysses Project Manager
         NASA Jet Propulsion Laboratory, Pasadena, Calif.

       Derek Eaton, Ulysses Project Manager
         European Space Agency

       Bruce Melnick, Astronaut Mission Specialist
       Thomas Akers, Astronaut Mission Specialist
         NASA Johnson Space Center, Houston

     The briefing will be on NASA Select television carried on
Satcom F2R, transponder 13 located at 72 degrees W. Longitude.  
Audio only also is also available on the V-2 circuits which may 
be dialed directly at 407/867-1220, -1240, or -1260.  A two-way 
question and answer capability also will be available at other 
NASA news facilities.

     At the conclusion of the briefing, news media will be taken
by bus to NASA's Hangar AO spacecraft checkout facility on Cape
Canaveral Air Force Station for a photo opportunity of Ulysses.
The astronauts and project officials, who participated in the
briefing, will be available for interviews.

     Clean room attire will be provided.  Photographers may use
electronic flash and battery powered lights.  No outside power
will be available.  No shorts or skirts are permitted and flat,
close-toe shoes are required.  Camera accessories to be taken
into the clean room must be transferred to special plastic bags
which will be provided -- no leather or vinyl can be taken into 
the facility.  Quality control personnel may request a wipe-down 
of photographic support equipment such as tripods before entering
the clean room area.  The cleaning materials will be furnished.
No matches or lighters are allowed.

     Arrival back at the KSC News Center is expected at about
2 p.m. EDT.

     Media needing accreditation for this event should contact
 the NASA-KSC News Center at 407/867-2468 to request badging.

------------------------------

End of SPACE Digest V11 #552
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