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From: starrfie@hydro.la.asu.edu (Sumner Starrfield)
Subject: More Info (fwd)
Date: Tue, 7 Dec 93 9:53:52 MST
Forwarded message:
>From wms@stsci.edu Tue Dec 7 09:28:15 1993
Date: Tue, 7 Dec 93 11:34:59 EST
From: Robert Williams <wms@stsci.edu>
Message-ID: <vsnet-history1862@hoge.baba.hajime.jp>
To: rschommer@stsci.edu, starrfie@hydro.la.asu.edu
Subject: More Info
>From eweiler@smtpgmgw.ossa.hq.nasa.gov Tue Dec 7 11:26:12 1993
Subject: STS-61 Status: WFPC2
To: "(EXT) ALLEN, RON" <RJALLEN@STSCI.EDU>,
"(EXT) AMANDA" <AMANDA@ASTRON.MIT.EDU>,
"(EXT) BAHCALL, JOHN" <JNB%IASSNS.BITNET@PUCC.PRINCETON.EDU>,
"(EXT) BAITY, BILL" <BAITY@CASS05.SPAN.NASA.GOV>,
"(EXT) BAUM, BILL" <BAUM@PHAST.PHYS.WASHINGTON.EDU>,
"(EXT) BEAVER, ED" <BEAVER@CASS05.SPAN.NASA.GOV>,
"(Ext) Benedict, Fritz" <FRITZ@DORRIT.AS.UTEXAS.EDU>,
"(EXT) BLADES, CHRIS" <BLADES@STSCI.EDU>,
"(Ext) Bless, Bob" <BLESS@LARRY.SAL.WISC.EDU>,
"(ext) Bob O'Dell" <CRO@RICE.EDU>,
"(EXT) BOHLIN, RALPH" <BOHLIN@STSCI.EDU>,
"(EXT) BROWN, ROBERT" <RBROWN@STSCI.EDU>,
"(ext) Bruce Woodgate" <WOODGATE@CHAMP.SPAN.NASA.GOV>,
"(EXT) BURBIDGE, M" <BURBIDGE@CASS05.SPAN.NASA.GOV>,
"(EXT) CALDWELL, JOHN" <CALDWELL@NEREID.SAL.ISTS.CA>,
"(EXT) CARPENTER, KEN" <HRSCARPENTER@HRS.SPAN.NASA.GOV>,
"(EXT) CHENG, ED" <EC@COBI.GSFC.NASA.GOV>,
"(EXT) CODE, ART" <CODE@UWFPC.SPAN.NASA.GOV>,
"(EXT) CRANE, PHIL" <PHIL@ESOMC1.SPAN.NASA.GOV>,
"(ext) Williams, Bob" <WMS@STSCI.EDU>
Ed Weiler reports that "the WFPC2 functional test is complete. Results show
that we have the same WFPC2 that we tested on the ground in thermal vacuum." He
says that, with negligible exceptions, the tests show a perfect instrument.
Ed notes that premature claims of success are unwise. The astronauts are
still in space, arrays are still furled and corrected images have not yet been
received.
Tonight's EVA will include COSTAR and DF-224 coprocessor installation. It is
followed, a day later, by the final EVA, lasting only about 3 hours, for
replacement of solar drive electronics and for the GHRS patch, neither of which
are critical elements.
Ed Weiler will be live on NASA Select tonight at 9 pm EST and plans to
discuss not only HST, but to put it in a larger context, including AXAF and
SIRTF.
- Bob Stachnik
STS-61
HST DAILY REPORT
Flight Day 6 (EVA Day 3)
(6:00 A.M. CST 12/06/93 TO 6:00 A.M. CST 12/07/93)
ENDEAVOUR (STS-61)
The flight crew and orbiter systems supported the third EVA, lasting 6 hours
and 47 minutes, to replace the old Wide Field & Planetary Camera with the
upgraded version and to add two new Magnetometer Sensing Systems.
The Auxiliary Power Unit fuel pump 'A' heater string on Endeavour has failed
off. If pump heater 'B' were to also fail, changes to orbiter attitude may be
required to maintain temperatures above hydrazine freezing levels.
HUBBLE SPACE TELESCOPE (HST)
During the flight day 5 crew sleep period, the remaining two gyros successfully
completed functional testing. All six gyros have been verified to be
operational.
A flawless installation of the Wide Field/Planetary Camera-II (WF/PC-II)
highlighted the third extravehicular activity (EVA) to service HST. WF/PC-II
successfully completed an aliveness test. WF/PC-II functional testing will be
completed on flight day 6. The original WF/PC was secured and stored in the
carrier for return and post-flight analysis.
Installation of the two Magnetic Sensing Systems was completed with minimal
difficulty. During magnetometer 2 replacement operations, the crew recovered
two loosened sides from the original magnetometer instrument. A tiger team has
been formed to determine if corrective action repairs are necessary. After
installation, both new Magnetic Sensing Systems passed their functional tests.
Posted: Tue, Dec 7, 1993 9:48 AM EST Msg: VJJD-3123-6450
From: PAOJSC
Subj: MCC Status Report #11
Mission Control Center
STS-61 Status Report #11
Tuesday, December 7, 1993, 7 a.m. CST
The flawless installation of the Wide Field/Planetary
Camera II early Tuesday morning highlighted the
third back-to-back spacewalk to service the
Hubble Space Telescope.
"Ohhh, look at that baby, it's a beautiful
spanking new Wifpic," space walking
astronaut Jeff Hoffman said
as he pulled the replacement Wide Field/Planetary
Camera II out of its storage locker about 11:24 p.m.
CST Monday. "We'll see some nice pictures with that."
Following the removal and storage of the original
WF/PC which will be returned to Earth for post-flight
analysis, STS-61 space walking astronauts Story Musgrave
and Hoffman installed the 620 pound camera
about 12:05 a.m. CST Tuesday while in the Space
Shuttle Endeavour's payload bay. The camera sits just
below the telescope's midpoint. About 35 minutes
after the installation was complete, ground controllers
reported that the camera had passed the first electrical
"aliveness" test, as it is called.
"I hope we have alot of scientists eager to use
this beautiful thing," Hoffman said after the installation.
The space walking duo completed the installation
of the camera in record time. Pre-flight predictions
provided a four hour time slot for the detailed installation.
The original camera experienced focusing problems
shortly after the telescope's deploy in April 1990. The
problems were attributed to a manufacturing flaw
in the telescope's 94-inch wide primary mirror. Blurred
photographs were the result of the flaw. The
new camera has four small precisely ground mirrors that
should remove the blur by focusing the
stray light of the telescope's primary reflector.
Hoffman and Musgrave also installed two new
magnetometers during their six hour and 47 minutes
spacewalk. The astronauts began the third
spacewalk at 9:35 p.m. CST Monday, more than an hour earlier
than planned pre-flight. The magnetometers ,
which are located at the top of the telescope, sense the
magnetic field in three directions and are needed
to keep the Hubble's momentum wheels operating with
optimal efficiency.
At the end of today's third spacewalk, Musgrave
had accumulated a total of 19 hours doing spacewalks
and Hoffman had racked up a total of 17 hours and
51 minutes. Both astronauts have been on three
separate spacewalks, two of which have occurred
on STS-61. Musgrave was the first person in the shuttle
program to conduct a spacewalk and he did so
on STS-6. Hoffman's first spacewalk occurred on STS-51D.
Crew members will begin their sleep period
at 9:57 a.m. CST and flight controllers will awaken them at
5:57 p.m. CST today. Musgrave will begin his
seventh day in space with a television interview at 8:27
p.m. CST today. He will talk with Ted Koppel,
the host of the ABC news program Nightline. The
interview is expected to last about 15 minutes.
Following the interview, crew members will
devote their attention to the fourth spacewalk scheduled for
this mission. During tonight's spacewalk,
astronauts Kathy Thornton and Tom Akers will replace the
telescope's high-speed photometer with the
Corrective Optics Space Telescope Axial Replacement. The
COSTAR has 10 small mirrors that should properly
focus light from the Hubble camera's primary
reflectors. Thornton and Akers are scheduled
to begin their spacewalk at 10:52 p.m. today.
All of Endeavour's systems continue to perform
well as the shuttle circles the Earth every 95 minutes in a
320 by 313 nautical mile orbit.
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