willner@cfashap.harvard.edu (Steve Willner) (01/18/90)
Here is the condensed CANOPUS for September 1989. There are 4
articles condensed or in full and 6 articles by title only. CANOPUS
is copyright American Institute of Aeronautics and Astronautics, but
distribution is encouraged. See full copyright information at end.
---------- CONTENTS -- 4 ARTICLES CONDENSED OR IN FULL -----------------
SPACE STATION CHIEF PREDICTS CUTS IN SCIENCE CAPABILITIES -
can890901.txt - 9/5/89
SPACE TELESCOPE GUIDE STAR CATALOG COMPLETED - can890905.txt - 9/5/89
HST PROPOSALS FOR THE FIRST CYCLE - CAN890906.TXT - 9/18/89
THE INFRARED SPACE OBSERVATORY (ISO) - CAN890907.TXT - 9/18/89
------------------------------------------------------------------------
SPACE STATION CHIEF PREDICTS CUTS IN SCIENCE CAPABILITIES -
can890901.txt - 9/5/89
Science capabilities may be cut by as much as half and advanced data
systems may be deferred as NASA looks for ways to trim up to $400
million from the cost of the Space Station, the program's top manager
said Thursday.
William Lenoir {Associate Administrator} said the internal study on
budget reductions has not yet reach the $400 million reduction (which
is in the House version of NASA's budget), but he is optimistic that
a House-Senate conference will not cut so deep.
Among the deferrals being studied are switching from 20 kilohertz AC
power, which requires hardware development, to DC; body-mounted
radiators instead of separate arrays on the station; resupplying
rather than recycling oxygen in the life support system; manning with
four rather than eight astronauts; and using two rather than four
pairs of solar arrays. The latter would have the greatest impact on
science operations, he said.
In other program areas, Lenoir predicted that there will be no
Shuttle II until well into the next century. He said that the current
Shuttle and the Station "will go forever. "There's not a lot of
extra money around," he continued, "so I think the Shuttle we have
now is the one we're going to have for ... 20 to 30 years."
SPACE TELESCOPE GUIDE STAR CATALOG COMPLETED - can890905.txt - 9/5/89
Almost 18 million celestial objects have been crammed into two
compact disks at the conclusion of an 8-year project to generate the
Guide Star Catalog for the Hubble Space Telescope. The catalog was
generated by the Space Telescope Science Institute in Baltimore.
The catalog lists 18,891,291 objects, including:
about 15 million stars between 9th and 15th magnitude,
about 3 million non-stellar objects, mostly galaxies.
The catalog was compiled from positions recorded by automatic
microdensitometers (Perkin-Elmer PDS machines) scanning 1,477 survey
plates, each covering a 6.4-degree square of sky. {Glass plates
taken with ground-based Schmidt telescopes--SPW}
HST PROPOSALS FOR THE FIRST CYCLE - CAN890906.TXT - 9/18/89
by Piero Benvenuti - ST-ECF Garching, Aug. 22, 1989
The ST Science Institute has recently completed the time allocation
process for the first cycle of General Observer proposals. The
process was certainly not an easy one, due to the large
oversubscription (about 9:1 in terms of spacecraft time).
The average `ESA' fraction of HST time (time awarded to PI's from ESA
member states) by ESA/NASA agreement, should not be less than 15%
over the lifetime of the project. {Calculated in complicated way.}
The ESA fraction for the first cycle is 21%, i.e. well above the
nominal value.
THE INFRARED SPACE OBSERVATORY (ISO) - CAN890907.TXT - 9/18/89
by Martin Kessler - ESTEC, Aug. 22, 1989
All aspects of ISO's design, including the operations, have been
examined in detail at the System Design Review. The review, finished
in July, showed that the design of the payload module (essentially a
large cryostat) was good, that the integration of the structural and
thermal model of the satellite could start, and that the definition
of the ground segment activities including the Science Operations
Centre of the Observatory was acceptable.
Some difficulties have been encountered in the design, manufacture
and testing of the primary mirror. The mounting pads have now been
re-designed to reduce stresses induced in the mirror during thermal
cycling and various changes have been made to the procedures for
polishing and lightweighting the mirror. These problems have caused
delays and, in order to keep the schedule compatible with a launch in
May 1993, the development of the telescope has been decoupled from
the mechanical qualification of the payload module. It is now
planned to integrate a dummy telescope in the ISO structural/thermal
model and to wait for the qualification model of the payload module
before testing and qualifying the entire optical sub-system.
Good progress has been made on the scientific payload. The
alignment/thermal/mass dummies of the instruments are practically
ready for delivery to ESA; that of the `Short Wavelength
Spectrometer' still needs to be vibrated again at liquid-helium
temperatures. All four instruments have successfully held formal
design reviews and, therefore, are proceeding with the manufacture
and testing of their engineering qualification models.
-------------------- 6 ARTICLES BY TITLE ONLY --------------------------
NASA DESIGNATES 17 SPACE GRANT COLLEGES/CONSORTIA - can890902.txt - 9/5/89
NASA RESEARCH ANNOUNCEMENT (NRA89-OSSA-15) - can890903.txt - 9/5/89
{Magellan Guest Investigator Program}
NASA RESEARCH ANNOUNCEMENT (NRA) 89-OSSA-16 - can890904.txt - 9/5/89
{The Atmospheric Effects of Stratospheric Aircraft: Modeling
and Measurement in Support of the High-Speed Research Program}
MAGELLAN STATUS - can890908.txt - 9/18/89
HURRICANE HUGO MAY AFFECT GALILEO LAUNCH - can890909.txt - 9/23/89
MAGELLAN STATUS - can890910.txt - 9/23/89
----------------END OF CONDENSED CANOPUS-----------------------------
This posting represents my own condensation of CANOPUS. For clarity,
I have not shown ellipses (...), even when the condensation is
drastic. New or significantly rephrased material is in {braces} and
is signed {--SW} when it represents an expression of my own opinion.
The unabridged CANOPUS is available via e-mail from me at any of the
addresses below.
Copyright information:
------------------------------------------------------------------------
CANOPUS is published by the American Institute of Aeronautics and
Astronautics. Send correspondence about its contents to the executive
editor, William W. L. Taylor (taylor%trwatd.span@star.stanford.edu;
e-mail to canopus@cfa.uucp will probably be forwarded). Send
correspondence about business matters to Mr. John Newbauer, AIAA,
1633 Broadway, NY, NY 10019. Although AIAA has copyrighted CANOPUS
and registered its name, you are encouraged to distribute CANOPUS
widely, either electronically or as printout copies. If you do,
however, please send a brief message to Taylor estimating how many
others receive copies. CANOPUS is partially supported by the
National Space Science Data Center.
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Steve Willner Phone 617-495-7123 Bitnet: willner@cfa
60 Garden St. FTS: 830-7123 UUCP: willner@cfa
Cambridge, MA 02138 USA Internet: willner@cfa.harvard.edu