Wystartował teleskop JWST! 25.12. o 12:20 z Kourou wystrzelona została RN Ariane-5ECA+, która wyniosła w T+23' 43" na orbitę prowadzącą do punktu L2 układu Słońce-Ziemia JWST (James Webb Space Telescope).
http://lk.astronautilus.pl/n211216.htm#08
Ariane 5 ready to launch the James Webb Space TelescopeJames Webb Space Telescope Launch (Full HD)The launchTarget launch date: 25 December 2021
Launch location: Europe's Spaceport in French Guiana
Launch vehicle: Ariane 5
Orbit: Lagrange point 2, 1.5 million km from Earth
https://www.esa.int/Science_Exploration/Space_Science/WebbL-30: Live coverage begins with shots of launchpad
L-15: Commentary begins
L-0: Lift off
L+27: Spacecraft separation
L+30: Solar array deployment
L+33: Brief success statements
https://www.esa.int/ESA_Multimedia/Transmissions/2021/12/James_Webb_Space_Telescope_live_launchJWST w drodze BY KRZYSZTOF KANAWKA ON 30 GRUDNIA 2021
https://kosmonauta.net/2021/12/jwst-w-drodze/https://naukawpolsce.pl/aktualnosci/news%2C90760%2Cgujana-francuska-wystrzelono-rakiete-z-teleskopem-webba-ktory-ma-ujawnichttps://www.urania.edu.pl/wiadomosci/nowe-wielkie-obserwatorium-wszechswiata-wystartowaloWebb liftoff on Ariane 5 to unlock secrets of the Universe25/12/2021
(...) “Launching Webb is a huge celebration of the international collaboration that made this next-generation mission possible. I want to thank everyone involved with the design, construction, and launch of this ambitious telescope, for making this day a reality. We are close to receiving Webb’s new view of the Universe and the exciting scientific discoveries that it will make,” says Josef Aschbacher, ESA Director General.
“The James Webb Space Telescope represents the ambition that NASA and our partners maintain to propel us forward into the future,” says NASA administrator Bill Nelson. “The promise of Webb is not what we know we will discover; it’s what we don’t yet understand or can’t yet fathom about our Universe. I can’t wait to see what it uncovers!”
“CSA is proud to have contributed critical instruments to this large‑scale international partnership as part of a global effort to spur the next great scientific leap. Canadian astronomers are excited to use Webb’s data and benefit from the tremendous science opportunities offered by this one-of-a-kind observatory,” says CSA President Lisa Campbell. (...)
https://www.esa.int/Science_Exploration/Space_Science/Webb/Webb_liftoff_on_Ariane_5_to_unlock_secrets_of_the_UniverseWebb Project History(...)
Webb Project Timeline1989
The Space Telescope Science Institute (STScI) and NASA co-host the Next Generation Space Telescope Workshop at STScI. The focus was the science and technical capabilities of an observatory that would follow the Hubble Space Telescope after it was decommissioned, which was estimated at that time to be 2005.
(...)
https://webbtelescope.org/webb-science/the-observatory/mission-timelineHere it is: humanity’s final look at @NASAWebb
as it heads into deep space to answer our biggest questions. Alone in the vastness of space, Webb will soon begin an approximately two-week process to deploy its antennas, mirrors, and sunshield. #UnfoldTheUniverse
https://twitter.com/NASA/status/1474724928360525827Plus+25 minutes, 30 seconds. The rocket's second stage shut down as scheduled. The upper stage is now maneuvering into the correct orientation for deployment of the James Webb Space Telescope.
Some statistics on today's flight:256th launch of an Ariane rocket since 1979
338th Arianespace mission
112th launch of an Ariane 5 rocket since 1996
85th satellite for ESA launched by Arianespace
79th launch of an Ariane 5 ECA rocket since 2002
87th flight of a Vulcain 2 engine
111th flight of an HM7B engine
2nd Ariane 5 launch targeting L2 Lagrange point
7th launch from the Guiana Space Center in 2021
3rd Ariane 5 launch in 2021
https://spaceflightnow.com/2021/12/25/ariane-5-va-256-jwst-mission-status-center/James Webb Space Telescope - Launch TimelineTime since launch Time Event Altitude(...)
L+ 12.5h JWST MCC-1a burn, SCAT-1, 22 m/s? 133700
L+ 1d JWST deploy GAA (Gimballed Antenna Assy) high gain comms antenna (and MGA?) 212000
L+ 2 days JWST MCC-1b burn, SCAT-1, 2 m/s? 336000
L+2:09:25:00 JWST pass lunar orbit 384400
L+ 2.7 days Deploy L and R forward unitized pallet structures 407000
L+ 3.1 days Deploy L and R aft unitized pallet structures 442000
L+ 4 days Raise DTA (deployable telescope tower assembly) 520000
L+ 5 days Deploy solar trim tab (Aft Momentum Flap) on right(?) panel 600000
L+ 5 days Release sunshade restraints 600000
L+5 days Retract sunshade central covers 600000
L+6 days Deploy lateral sunshade boom 1 (port, +J2) 660000
L+6 days Deploy lateral sunshade boom 2 (stbd, -J2) 660000
L+7 days Start of Sunshade tensioning and layer separation 720000
L+8 days Complete Sunshade tensioning and layer separation 775000
L + 10 days Deploy SMSS (Secondary Mirror Support Structure) 872000
L + 10 days SMA (Secondary Mirror Assembly) deployment 872000
L+11 days Raise ADIR (Aft Deployed Instrument Radiator) on back of ISIM 917000
L + 12 days Unfold lateral PMBA (Primary Mirror Backplane Assembly) Wing 1 (port, +V2) 957000
L + 13 days Unfold lateral PMBA (Primary Mirror Backplane Assembly) Wing 1 (stbd, -V2) 997000
L + 13 days PMSA (Primary Mirror Segment Assembly) deployment complete 997000
L+15 days Begin mirror segment actuation/deployment
L+24 days Complete mirror segment actuation/deployment
L + 29 days MCC-2 with SCAT-2 thrusters, 0.7 m/s, 149 s burn - Arrive Sun Earth L2 halo orbit 1300000
L + 29 days Begin cooldown
L+30d? ESC-D upper stage pass through L2 region to solar orbit?? (UNCONFIRMED)
L+36 days Begin mirror alignment
L+36 days Begin telescope commissioning
L+36 d Begin instrument activation
L+45 d? Segment-level wavefront control
L+O(1 mo) FGS fine guiding tests
L+O(50d) SKM-1 stationkeeping burn with SCAT-2
L+60d? Phasing of OTE
L+77 days MIRI cryocooler activation
L+124 days Complete mirror alignment, PSF checks
L+124 days Complete telescope commissioning
L+124 days Begin science instrument commissioning
L + 120d Instrument calibration
L + 120d Instruments complete cooling to 50K
L + 180d Science instrument commissioning complete
L + 180d Begin Cycle 1 GO observations
L + 180-210d RELEASE FIRST IMAGES (ERO, Early Release Observations)
https://planet4589.org/space/misc/webb/time.htmlSuccess in Critical Communications Tests for NASA's James Webb Space TelescopeSep 5, 2018
(...)
A Complicated DanceFrom the moment Webb launches, and through the first six hours of flight, five different telecommunications service providers located around the world will alternately convey command and telemetry data to the mission operations team in the MOC. The first exercise demonstrated the complex exchange among these facilities.
These different providers are needed because of the geometry of Earth in relation to Webb’s orbit and altitude. “Whereas most low-Earth missions can use TDRS (Tracking and Data Relay Satellite) or some other kind of communications satellite in orbit around Earth to relay data, we are so far away that we have to use other facilities,” explained NASA’s Carl Starr, the Mission Operations Manager, or “MOM,” for Webb at NASA's Goddard Space Flight Center, Greenbelt, Maryland.
By six hours after liftoff, Webb will be about halfway to the Moon and six times higher in altitude than the geosynchronous Earth orbit (GEO) where TDRS and many communications satellites dwell. When the telescope reaches its destination, it will be nearly a million miles from Earth—about 45 times farther away than GEO. (...)
https://www.nasa.gov/feature/goddard/2018/success-in-critical-communications-tests-for-nasas-james-webb-space-telescopehttps://www.esa.int/Science_Exploration/Space_Science/Webb_factsheethttps://blogs.nasa.gov/webb/https://esamultimedia.esa.int/docs/science/Webb-LaunchKit_EN.pdfhttps://ntrs.nasa.gov/api/citations/20140008969/downloads/20140008969.pdfhttps://www.nasaspaceflight.com/2021/12/ariane-5-webb-launch/AA
https://www.forum.kosmonauta.net/index.php?topic=3919.msg172664#msg172664https://space.skyrocket.de/doc_sdat/jwst.htm
Wątek: James Webb Space Telescope (JWST) (Przeczytany 420022 razy)