Author Topic: Ariane 5 VA256 - James Webb Space Telescope - NET 25 December 2021 (12:20 UTC)  (Read 82213 times)

Online woods170

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For some reason the above tweet from ESA’s chief, and several others saying the same thing, are now deleted…

https://twitter.com/dutchspace/status/1471798763379474436?s=21

For the same reason why NASA wasn't allowed to announce the clampband mishap on their own: it must be a joint announcement. The ESA chief spoke too soon. Someone pointed that out to him and the tweets were subsequently removed.

Offline bolun

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Webb launch confirmed for 24 December

17/12/2021

The James Webb Space Telescope is confirmed for the target launch date of 24 December, at 12:20 GMT / 13:20 CET.

Late yesterday, teams at the launch site successfully completed encapsulation of the observatory inside the Ariane 5 rocket that will launch it to space. Webb’s launch final readiness review will be held on Tuesday 21 December and, if successful, roll-out is planned for Wednesday 22 December.

https://www.esa.int/Science_Exploration/Space_Science/Webb/Webb_launch_confirmed_for_24_December

Image credit: ESA-Manuel Pedoussaut

Offline bolun

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https://twitter.com/NASA/status/1472284798941118468

Quote
Coming up for the @NASAWebb telescope (UTC-5):

✨ Dec. 21 at 2pm ET: Pre-launch briefing

✨ Dec. 24 at 6am ET: Live launch broadcast

✨ Dec. 24 at 6:30am ET: @NASA_Es launch broadcast

We're ready to #UnfoldTheUniverse! Get details on how you can watch: https://go.nasa.gov/3siCTpi

Offline bolun

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ESA catches Webb's first call

20/12/2021

Webb is due to launch on an Ariane 5 rocket from Europe’s Spaceport in French Guiana, at the earliest on 24 December. It will journey on a direct escape trajectory towards its target orbit more than 1.5 million kilometres from Earth. Part of ESA’s Estrack cooperative network, the 10-metre antenna in Malindi, Kenya, will make first contact from the ground with the fledgling mission, with the all-important ‘first acquisition of signal’.

About 23 minutes after lift-off, Malindi will locate the Ariane 5 launch vehicle in flight, rising above the Western horizon, still housing its precious cargo. Only five minutes later, Webb will separate from the rocket and begin its solo life in space.

From the moment of separation, Malindi will have three phases of visibility with the mission; at first, the station will be in a ‘private call’ with Webb for the first hour after separation, after which point NASA’s Deep Space Antenna in Canberra will join the call and Malindi will switch to backup. When the spacecraft is no longer visible from Canberra, Malindi will again take over the reins one more time before NASA’s Madrid station joins the call.

Related article: ESA to pick up as Webb phones home

https://www.esa.int/ESA_Multimedia/Images/2021/12/ESA_catches_Webb_s_first_call

Image credit: ESA

Offline centaurinasa

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« Last Edit: 12/21/2021 10:13 am by centaurinasa »
To boldly go where no human has gone before !

Offline centaurinasa

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To boldly go where no human has gone before !

Offline centaurinasa

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"Yesterday was the dress rehearsal for the next #Ariane5 flight that will carry the space telescope #Webb.
Jupiter Room, Control Center (CDC)
D-4 before the most anticipated launch at the end of the year "

https://twitter.com/EuropeSpacePort/status/1472946199770673153
To boldly go where no human has gone before !

Offline electricdawn

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This will be my unofficial Christmas present. Here's hoping that everything will go right. Gonna watch this live!
« Last Edit: 12/21/2021 10:59 am by electricdawn »

Offline centaurinasa

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To boldly go where no human has gone before !

Offline centaurinasa

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To boldly go where no human has gone before !

Offline centaurinasa

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Offline Semmel

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This will be my unofficial Christmas present. Here's hoping that everything will go right. Gonna watch this live!

Fingers crossed Ariane, launch date kind of clashes with family time (here, Santa Claus comes afternoon of 24th.) but maybe we can make it work life before Santa :). Fingers crossed on that one too!

Offline Ken the Bin

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Launch is moved to Christmas Day, December 25 due to weather:

Webb: new target launch date

Quote from: ESA

Today, 21 December 2021, the Launch Readiness Review for flight VA256 to launch the James Webb Space Telescope has been successfully completed and concluded with the authorisation to perform the launch vehicle rollout and the start of the launch chronology.

However, due to adverse weather conditions at Europe’s Spaceport in French Guiana, flight VA256 – initially scheduled for 24 December – is being postponed.

The new targeted launch date is 25 December, as early as possible within the launch window 12:20–12:52 GMT / 13:20–13:52 CET.

Tomorrow evening, local time in Kourou, another weather forecast will be issued in order to confirm the date of 25 December. The Ariane 5 launch vehicle and Webb are in stable and safe conditions in the final assembly building.

Offline zubenelgenubi

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Webb launch confirmed for 24 December

17/12/2021

Noting that the notification due on the 17th was actually one day late.

So did reporters at today's press briefing.
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Offline zubenelgenubi

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SN, Weather bumps JWST launch to Christmas Day, Dec 21

Quote
[D]uring a call with reporters a few hours before the announcement, Jérôme Rives, vice president of the Ariane 5 business unit at Arianespace, said one issue was upper-level winds.

“We have one potential concern regarding the higher altitude winds,” he said, noting it would be examined at a weather briefing scheduled for shortly after the media call. “We are going to look at that very accurately in about an hour to assess the situation for the 24th of December and see whether we can launch on that date.”
Thus, the 25th.

Is this a regular occurrence in the tropics at this time of year?
Support your local planetarium! (COVID-panic and forward: Now more than ever.)
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Offline eeergo

SN, Weather bumps JWST launch to Christmas Day, Dec 21

Quote
[D]uring a call with reporters a few hours before the announcement, Jérôme Rives, vice president of the Ariane 5 business unit at Arianespace, said one issue was upper-level winds.

“We have one potential concern regarding the higher altitude winds,” he said, noting it would be examined at a weather briefing scheduled for shortly after the media call. “We are going to look at that very accurately in about an hour to assess the situation for the 24th of December and see whether we can launch on that date.”
Thus, the 25th.

Is this a regular occurrence in the tropics at this time of year?

Apparently :)

https://twitter.com/michaelroston/status/1473415065978257410
-DaviD-

Offline GWR64

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Offline GWR64

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https://www.arianespace.com/corporate-news/flight-va256-update/
Quote
Flight VA256 – Update

The target launch date for the James Webb Space Telescope is confirmed on December 25, as early as possible within the following launch window:

    Between 7:20 a.m. and 7:52 a.m. Washington;
    Between 9:20 a.m. and 9:52 a.m. Kourou;
    Between 12:20 p.m. and 12:52 p.m. UTC;
    Between 1:20 p.m. and 1:52 p.m. Paris;
    Between 9:20 p.m. and 9:52 p.m. Tokyo.

According to the planning of operations, the Ariane 5 launcher will be rolled-out on December 23, in the morning local time.


Offline centaurinasa

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To boldly go where no human has gone before !

Offline eric z

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 I would like to recommend people that haven't tried it before give the ESA/Arianne TV coverage a try. It has a completely different vibe than NASA-TV and feels a touch exotic, if you will! Good luck to all the teams involved 8) and here's to Santa delivering a Big Bang for everyone at Christmas!  8)

 

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