Admiral Fluffy Posted December 25, 2021 Share Posted December 25, 2021 1 hour ago, Spaceception said: Aw, come on, I missed the whole launch. I mean, that removes some of the stress but still Me too. I even set an alarm, but it didn’t wake me up. Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted December 25, 2021 Share Posted December 25, 2021 My alarm woke me up, and the bird was already 20km off the ground. I watched it clear the soup and then went back to sleep before MECO. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted December 25, 2021 Share Posted December 25, 2021 My 11 y.o. warned me last night to expect to be woken up at zero dark thirty. I relied on her. At 7:30 EST my 14 y.o. asked in his newly deep voice, 'Dad, are we going to do Christmas?'. (He then had to wake up his sister! :p ) She held me to the promise to only watch the video - loved being able to see the deployment! Amazing how much tension a video has Quote Link to comment Share on other sites More sharing options...
Spaceception Posted December 25, 2021 Share Posted December 25, 2021 The title needs to be changed now. JWST: it's in space! Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted December 25, 2021 Share Posted December 25, 2021 It was always in space. Just now it isn't moving around the planet CoM circularly due to the planet rotation and the force of friction, but is moving around it circularly in the gravity field due to inertia. That's all. P.S. Are they aware that the telescope mod they use is for 1.10? Quote Link to comment Share on other sites More sharing options...
Entropian Posted December 25, 2021 Share Posted December 25, 2021 Slightly off-topic; do any of y'all know of a website/program that can show the celestial coordinates of JWST? Thinking I might be able to catch it in my telescope but so far my google-fu has been without results. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted December 25, 2021 Share Posted December 25, 2021 https://www.jwst.nasa.gov/content/webbLaunch/whereIsWebb.html But it's probably on the way to L2? Quote Link to comment Share on other sites More sharing options...
linuxgurugamer Posted December 25, 2021 Share Posted December 25, 2021 7 minutes ago, kerbiloid said: https://www.jwst.nasa.gov/content/webbLaunch/whereIsWebb.html But it's probably on the way to L2? Not yet, look at the schedule, probably about 7pm or so Quote Link to comment Share on other sites More sharing options...
cubinator Posted December 25, 2021 Share Posted December 25, 2021 1 minute ago, linuxgurugamer said: Not yet, look at the schedule, probably about 7pm or so It's not in LEO. The mid course corrections are to complete the maneuver to intercept L2, but the spacecraft is already leaving Earth. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted December 25, 2021 Share Posted December 25, 2021 3 minutes ago, linuxgurugamer said: Not yet, look at the schedule, probably about 7pm or so I mean, it's not on a stable orbit to publish its ephemeris. Quote Link to comment Share on other sites More sharing options...
cubinator Posted December 25, 2021 Share Posted December 25, 2021 I don't see any TLEs right now Quote Link to comment Share on other sites More sharing options...
tater Posted December 25, 2021 Share Posted December 25, 2021 Missed launch, my buddy at MCC texted me this morning: Quote Big problem reported with Webb. NASA supposed to have a news conference shortly. They forgot to take the lens cap off. I saw it as a notification that truncated everything after the first line and freaked out. Now I need to troll him. Hopefully all the deployments work! Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted December 25, 2021 Share Posted December 25, 2021 Luckily, it's on CKAN, so at least the software updates will run automatically, unlike on the Voyagers. Quote Link to comment Share on other sites More sharing options...
RuBisCO Posted December 25, 2021 Share Posted December 25, 2021 Watching that launch was extra scary considering the price tag and astronomical advancements this telescope represents. We still have 6 more months before everything ins unfolded and checked out. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted December 25, 2021 Share Posted December 25, 2021 Well - if it all works out right: a Christmas launch and a birthday 'reveal' of the science / pics. Quote Link to comment Share on other sites More sharing options...
SOXBLOX Posted December 25, 2021 Share Posted December 25, 2021 Ahhhhhh... That relief you feel when your probably-irrational fear that the Ariane would blow up on launch is assuaged. Merry Christmas, universe! Quote Link to comment Share on other sites More sharing options...
HebaruSan Posted December 26, 2021 Share Posted December 26, 2021 (edited) Mid Course Correction Burn 1a supposedly went fine. Does anyone know how much delta V it was? I saw that it was 65 minutes long, for what that's worth, but I don't know the TWR (presumably tiny?) or the specific impulse. Also, for those who prefer a checklist/timeline style: https://spaceexplored.com/2021/12/25/how-to-track-james-webb-space-telescope-mission-timeline/ Edited December 26, 2021 by HebaruSan Quote Link to comment Share on other sites More sharing options...
kcs123 Posted December 26, 2021 Share Posted December 26, 2021 I was always assumed that they will complete all necessary orbital burns and unfold everything after that. It seems that it is not a case. It will be fully deployed ~17 days before final burn. Quote Link to comment Share on other sites More sharing options...
RCgothic Posted December 26, 2021 Share Posted December 26, 2021 I hadn't realised Webb's design life was just 5 years of science: Up to a little over 10 years if the L2 injection burn by the upper stage was perfect and little in the way of mid course corrections are required. One the fuel is gone, Webb will lose its ability to remain at L2 and keep the sunshade between itself and the sun. Unlike Hubble, which doesn't need to consume fuel to maintain its more-stable orbit in LEO. Quote Link to comment Share on other sites More sharing options...
Spaceception Posted December 26, 2021 Share Posted December 26, 2021 (edited) 6 minutes ago, RCgothic said: Snip Up to a little over 10 years if the L2 injection burn by the upper stage was perfect and little in the way of mid course corrections are required. One the fuel is gone, Webb will lose its ability to remain at L2 and keep the sunshade between itself and the sun. Unlike Hubble, which doesn't need to consume fuel to maintain its more-stable orbit in LEO. What are the possibilities that NASA will request funding for a servicing mission once JWST is in position? Is it even possible? I saw somewhere that exhaust gas from a spacecraft going to rendezvous could hit the mirror of the telescope. Edited December 26, 2021 by Spaceception Quote Link to comment Share on other sites More sharing options...
RCgothic Posted December 26, 2021 Share Posted December 26, 2021 10 minutes ago, Spaceception said: What are the possibilities that NASA will request funding for a servicing mission once JWST is in position? Is it even possible? I saw somewhere that exhaust gas from a spacecraft going to rendezvous could hit the mirror of the telescope. The article is wrong in one respect - there is a crewed spaceship under design that could make it.out to L2 for a servicing mission. Starship could theoretically be made to have enough endurance and capability. However, it's true that Webb has no grapple fixture and no serviceable parts. There's no way to refuel it as far as I can tell. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted December 26, 2021 Share Posted December 26, 2021 11 minutes ago, RCgothic said: There's no way to refuel it as far as I can tell. Wonder if it could be captured and returned? Quote Link to comment Share on other sites More sharing options...
RCgothic Posted December 26, 2021 Share Posted December 26, 2021 6 minutes ago, JoeSchmuckatelli said: Wonder if it could be captured and returned? Again, it has no grapple fixture, and no ability to furl its sunshade to withstand any significant thrust. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted December 26, 2021 Share Posted December 26, 2021 Just now, RCgothic said: Again, it has no grapple fixture, and no ability to furl its sunshade to withstand any significant thrust. Ah. Well... given that Webb was designed at a time when lift was expensive and capacity smaller than we anticipate it will be in 5 years... perhaps the prudent thing to do would be to build, in 5-7 years a New Webb that can be emplaced by something larger like SS or other in-development rockets? Quote Link to comment Share on other sites More sharing options...
RCgothic Posted December 26, 2021 Share Posted December 26, 2021 3 minutes ago, JoeSchmuckatelli said: Ah. Well... given that Webb was designed at a time when lift was expensive and capacity smaller than we anticipate it will be in 5 years... perhaps the prudent thing to do would be to build, in 5-7 years a New Webb that can be emplaced by something larger like SS or other in-development rockets? That would indeed be smart. Unfortunately the next flagship observatory, LUVOIR/HabEX is not currently being designed to take advantage of increased size and capacity. It'll be smaller than Webb and not due for completion until the 2040s. Quote Link to comment Share on other sites More sharing options...
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