Электронная библиотека астронома-любителя. RU.SPACE.NEWS

Электронная библиотека астронома-любителя. Книги по астрономии, телескопостроению, оптике.

главная

библиотека

архив RSN

ссылки

Ru.Space.News:

год:

Интернет-магазин
Любимых игрушек!

Обзоры оружия и снаряжения

m31.spb.ru

0.036

Архив RU.SPACE.NEWS за 04 февраля 1998

Дата: 04 февраля 1998 (1998-02-04) От: Alexander Bondugin Тема: Indonesian Satellite Sector Update Привет всем! Вот, свалилось из Internet... Indonesian Satellite Sector Update Jakarta - Feb 4 1998 - P.T. Pasifik Satelit Nusantara (Nasdaq: PSNRY) Indonesia's first private satellite company, issued a statement on its operations, Wednesday, outlining the outlook for its Multi-Media Asia (M2A) satellite communications initiative and its general business outlook. This has previously been reported as impacting Space Systems Loral's employment levels. For a web version of this release please visit http://www.spacer.com otherwise read on - public domain company press release ********************************** Indonesian Satellite Sector Update Jakarta - Feb 4 1998 - As has been reported, the company has notified Space Systems/Loral (SS/L), which is constructing an FS1300 satellite for the project, that it intends to delay delivery of the satellite, which was originally scheduled for early 1999. PSN has opted to delay delivery in recognition of economic conditions in Indonesia. However, the company also noted that the M2A service remains viable using existing satellite capacity owned by the company, and that it continues to work toward commencing a reduced-capacity, yet fully functional, version of M2A in 1999. ``Given the economic conditions prevalent throughout Asia in recent months, the company has naturally developed strategic alternatives for each of its telecommunications projects in the event these conditions persist,'' noted Mr. Adi Adiwoso, Chief Executive Officer of both Multi-Media Asia Indonesia (M2A's parent entity) and Pasifik Satelit Nusantara. ``In the case of M2A, we have long established that the project is feasible using the M2A ground segment supplied by Alcatel with our existing extended C-band transponders on the Palapa C1 and Palapa C2 satellites. Such a structure can deliver full M2A service as originally contemplated, with sufficient capacity to cover the first two to three years of market demand. Ultimately, of course, launch of the M2A satellite is vital to our goal of reaching a maximum number of subscribers and delivering to Asia the first fully integrated voice, data, and multimedia communications system. We continue to work towards that goal and look forward to resuming our work with SS/L when economic conditions permit.'' Mr. Adiwoso continued, ``M2A will offer unprecedented opportunities for development in Indonesia and Asia by delivering multimedia telecommunications services at very low cost. It is a revolutionary program for many in the Asia-Pacific region, and key to developing the infrastructure which is crucial to Asia's future.'' M2A is a highly advanced multimedia satellite network, which will ultimately provide telephone, fax, Internet access, and other multimedia services such as direct-to-home (DTH) television to some four million subscribers in Indonesia and other Asian countries. The system is designed to overcome the various challenges that have left Indonesia and other parts of Asia with among the lowest teledensities in the world. Mr. Adiwoso also commented on PSN's mobile satellite project, Asia Cellular Satellite (ACeS), noting, ``The fully funded ACeS project continues on schedule for its launch in the first quarter of 1999. The satellite's critical design review (CDR) was completed in mid January, and the system's CDR is expected to be completed in the coming weeks. To date, we have signed National Service Providers (NSP's) for Thailand, Indonesia, the Philippines and Taiwan, and formed a joint venture with two cellular operators in India. ACeS is also in advanced discussions with three other countries within its coverage area.'' Pasifik Satelit Nusantara (PSN) is the first private satellite communications company in Indonesia and, with over US$200 million in assets, is also one of the leading satellite companies in the Asia Pacific. Based in Jakarta, PSN is focused on becoming a fully integrated provider of satellite-based telecommunications products and services in Asia, including the wholesale leasing of satellite capacity and the following three new services under development which are to be offered to end-users: Xpress Connection (TM), a low cost, VSAT-based rural telephone service; Asia Cellular Satellite (ACeS), a satellite-based, handheld digital mobile telecommunications system providing both voice and data services; and Multi-Media Asia (M2A), Asia's first satellite-based multimedia digital telecommunications system (MMDS), supporting two-way voice and data services, Internet access, fax and DTH television services. Pasifik Satelit Nusantara NASDAQ news listing --- http://mktnews.nasdaq.com/scripts/news/nasdnews.asp?usymbol=psnry&logo=n&compa nyname=p.t.%20pasifik%20satelit%20nusantara a SpaceCast service - http://www.spacer.com Hа сегодня все, пока! =SANA=

Дата: 04 февраля 1998 (1998-02-04) От: Alexander Bondugin Тема: SJI's Sky and Space Update - January 30, 1998 Привет всем! Вот, свалилось из Internet... SAN JUAN INSTITUTE'S SKY AND SPACE UPDATE Summary information about the night sky and recent findings and events in solar system exploration and science. Updated every 2 weeks. LAST UPDATED: FRI. JAN. 30, 1998 Prepared by: Dr. Bruce Betts and Andre Bormanis OBJECTS TO LOOK FOR IN THE NIGHT SKY (MID-NORTHERN LATITUDES) VENUS is visible in the east-southeast in the early morning, looking like an extremely bright star. In a small telescope, the planet appears as a long, thin crescent. Some people claim that during the first few days of February, when the crescent is at its largest, sharp-eyed observers may be able to discern the crescent shape with their naked eyes. Watch Venus carefully as the breaking dawn reduces the planet=92s glare to see if you= can make out its crescent shape. MERCURY is too close to the Sun to be seen for the next several weeks. MARS is low in the southwest in the early evening. It looks like a yellowish-orange star. JUPITER, looking like a very bright white star, is very low in the southwest part of the sky shortly after sunset. SATURN is in the southwest shortly after sunset. It is the brightest object in this part of the sky, looking like a yellowish star. THE MOON First Quarter Moon occurs Feb. 3 at 2:53 p.m. PST (UT - 8 hours). Full Moon occurs Feb. 11 at 2:23 a.m. PST. This month=92s full Moon is also known as the Snow or Trapper Moon. HUMAN SPACEFLIGHT UPDATE SPACE SHUTTLE: Space Shuttle Endeavour de-coupled from the Russian Mir space station on Jan. 29. It is expected to return to Earth on Jan. 31 around 2:30 p.m. PST. NASA has announced a significant achievement toward the first launch of the International Space Station. The first of the Space Shuttle's new, very lightweight external fuel tanks was rolled out at NASA's Michoud Assembly Facility in New Orleans, LA on Jan. 16. The manager of the External Tank Project at NASA's Marshall Space Flight Center, Parker Counts, noted that in order to launch Space Station components to their intended orbits, "the Space Shuttle system needed additional performance -- either through more power or less weight. Since each pound removed from the external tank equals a pound of payload that can be carried into space, NASA developed the super lightweight tank." The new tank is the same size as the current Shuttle external tank, but weighs about 7,500 pounds less. The external tank holds liquid hydrogen and liquid oxygen in two separate tanks to power the Shuttle's three main engines. Structural changes and a new aluminum lithium alloy =96 stronger than the alloy currently used in the Shuttle=92s external tank =96 account= for the reduction in tank weight. Its first launch is scheduled in May on= STS-91. SEN. JOHN GLENN WILL FLY ON THE SPACE SHUTTLE: U.S. Senator John Glenn will join the crew of the Space Shuttle Discovery when it lifts off sometime in October. Glenn will serve as a payload specialist on that mission. Glenn made history 35 years ago when he became the first American to orbit the Earth. He recently expressed interest to NASA in flying in space again to conduct research on aging. "Not only is John Glenn a Marine test pilot, an astronaut, and the first American to orbit the Earth, he brings a unique blend of experience to NASA," according to NASA Administrator Dan Goldin. "He has flight, operational, and policy experience. Unlike most astronauts, he never got the opportunity for a second flight. He is part of the NASA family, an American hero, and he has the right stuff for this mission." The biomedical experiments that will be conducted on this mission are a joint project between NASA and the National Institute on Aging, part of the National Institutes of Health. The research will include studies on sleep disorders, muscle atrophy, balance, and clinical evaluations of blood and heart function. The oldest person to fly into space to date was 61 years old. Glenn will be 77 when he makes his flight in October. TEACHER TO FLY ON SHUTTLE: NASA has selected Barbara Morgan, an elementary school teacher from McCall, Idaho, to join the next astronaut candidate class as a mission specialist. Morgan will need to train for at least a year to become a fully-qualified shuttle astronaut. =20 More information on the Space Shuttle program can be found at http://shuttle.nasa.gov. THESE WEEKS IN SPACE HISTORY JAN. 30, 1868: Tens of thousands of meteorites bombarded the countryside near Pultusk, a small town just north of Warsaw, Poland. The meteorites were fragments of an asteroid, perhaps five or six meters in diameter, that exploded when it slammed into the Earth's atmosphere at a speed of several dozen kilometers per second. Most of the recovered fragments were about the size of peas, but the largest weighed some 10 kilograms. FEB. 3, 1966: The unmanned Soviet spacecraft Luna 9 makes the first soft-landing on the Moon. FEB. 8, 1600: Italian monk Giordano Bruno was burned at the stake for supporting the notion that the Sun lies at the center of the solar system. RANDOM SPACE FACT The elements Carbon, Hydrogen, Oxygen, and Nitrogen =96 all crucial to life =96 are found in roughly the same proportions in comets and human= beings. ********************************************************************** The San Juan Institute (SJI) is a non-profit corporation headquartered in San Juan Capistrano, CA with divisions there and in Tucson, AZ. SJI carries out research and education in planetary and Earth sciences and astronomy, with funding provided by government grants and private donations, which are always needed. Partial funding for the SSU has been provided by NASA's Solar System Exploration Division. San Juan Capistrano Research Institute Ph: 714-240-2010, Fax:= 714-240-0482 31882 Camino Capistrano, Suite 107 Email: educate@sji.org San Juan Capistrano, CA 92675 Web site: http://www.sji.org Hа сегодня все, пока! =SANA=

Дата: 04 февраля 1998 (1998-02-04) От: Alexander Bondugin Тема: This Week On Galileo - February 2-9, 1998 Привет всем! Вот, свалилось из Internet... THIS WEEK ON GALILEO February 2-8, 1998 On this week's schedule, Galileo will transmit to Earth pictures and science information that were on the tail end of last week's schedule. This data, gathered during the Dec. 16 Europa flyby, when the spacecraft dipped 200 kilometers (124 miles) above the surface, was stored on the spacecraft's onboard tape recorder. It includes science information obtained by Galileo's camera of the Gilgamesh region of Jupiter's moon Ganymede. This is followed by a global observation of Europa performed by the Near Infrared Mapping Spectrometer, then the final part of the week contains the processing and transmission of two more camera observations. Both are of Europa, with one showing a region containing unusual fretted shaped, and the other depicting a region of dark lines. Galileo is scheduled to perform a spacecraft turn and a flight path maneuver this week, both of which will exercise the spacecraft's attitude control system that has behaved anomalously on two occasions since December 1997. Flight team members and JPL experts have confirmed that the cause of the two incidents was a hardware error in one of the spacecraft's two gyroscopes. Analysis efforts are now focused on understanding the characteristics of the error and the conditions under which the behavior may deteriorate. Remember that the gyroscopes are the part of the attitude control system that can be used to control where the spacecraft is pointing. This control is typically provided by another part of the subsystem (the star scanner) that scans the sky surrounding the spacecraft for visible stars. The gyroscopes are used when the stars that are visible are not good enough to be used for this purpose, when the star scanner view must be covered to avoid over-exposure and damage due to the presence of bright light, or when the spacecraft is performing a turn and the star scanner is changing the stars it is using as a reference. In addition, the gyroscopes are needed for accurate remote sensing instrument pointing. They provide data on motion of the spacecraft that is small enough to not affect the operation of the star scanner (and control of where the spacecraft is pointing), but are large enough to affect where the instrument pack is pointing. The gryoscopes, which are mounted on the instrument pack platform, can detect this small motion, compensate for it and keep the instruments pointed where desired. The commands for this weeks' spacecraft turn and maneuvers are being built with extra safeguards. These safeguards will protect the spacecraft from the anomalous behavior of the gyroscope and will ensure that the spacecraft remains pointed where desired by the flight team. The turn is being performed to keep the spacecraft's radio antenna pointing near the Earth. Turns like this one are required periodically to keep up with the Earth's motion across the sky. This week's flight path maneuver is the last orbit path correction prior to the spacecraft's close flyby of Europa scheduled for next week. For more information on the Galileo spacecraft and its mission to Jupiter, please visit the Galileo home page: http://www.jpl.nasa.gov/galileo/ Hа сегодня все, пока! =SANA=

Дата: 04 февраля 1998 (1998-02-04) От: Alexander Bondugin Тема: Release Of Galileo Images During GEM Привет всем! Вот, свалилось из Internet... Release of Galileo Images During GEM On December 7, 1997, the Galileo spacecraft completed its two-year "Prime Mission" study at Jupiter. At that point, we entered a new phase, the "Galileo Europa Mission" (GEM), a tightly focussed, low-cost continuation of Galileo's exploration of the Jovian system, scheduled to last through the end of 1999. To accomodate the associated cost-reduction needed to conduct the GEM mission, the daily release of images on the Galileo Home Page that was conducted during Galileo's primary mission in 1996-1997, is being replaced with periodic releases of related collections of images and data that put the data into the bigger picture of what we are learning at Jupiter, as the scientific analysis continues. The timing of the releases will be lead by our scientific discoveries. We will augment these releases with weekly educational, public event, and mission status releases and stories; we'll have many interesting activities coming during this exciting phase of the mission. The first closeup images of Europa taken during the Europa 12 encounter will be released in March 1998 The full data sets from the previous orbits are being released approximately one year after the data has been received on Earth. See the following schedule for the public release dates. Galileo Primary Mission (6/96-12/97) Solid State Imaging Orbital Data Sets Public Release Schedule Orbit 1 (G1) September 06, 1997 Orbit 2 (G2) November 04, 1997 Orbit 3 (C3) December 19, 1997 Orbit 4 (E4) February 20, 1998 Orbit 6 (E6) April 05, 1998 Orbit 7 (G7) May 07, 1998 Orbit 8 (G8) June 25, 1998 Orbit 9 (C9) September 17, 1998 Orbit 10 (C10) November 06, 1998 Orbit 11 (E11) & GEM Schedules will be posted when available. Hа сегодня все, пока! =SANA=

сайт служит астрономическому сообществу с 2005 года