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Anyone excited about the James Webb space telescope launch? Will it finally happen after all these delays? It can be followed live on NASA's youtube channel. 7:20 EST. One thing I can't figure out is why are they launching it in the morning? It is supposed to get to an orbit around L2, over a million km towards the sun. Why not launch it on the afternoon (sunset) when the launch site is moving away from the sun? I would think that an boost away from the sun from Earth's rotation would be advantageous??? What am I missing
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DMT-Nexus member
Posts: 401 Joined: 31-May-2014 Last visit: 30-Dec-2023 Location: The confluence
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Cool! Will have a watch with the fam. Regarding the gravitational assist: I can’t imagine they didn’t figure out all the best loopyloos, probably has something to do with wherever the best series of passes happen to be around the vicinity of the launch date. "We dance round in a ring and suppose, while the secret sits in the middle and knows." Robert Frost
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roninsina wrote:Cool! Will have a watch with the fam. Regarding the gravitational assist: I can’t imagine they didn’t figure out all the best loopyloos, probably has something to do with wherever the best series of passes happen to be around the vicinity of the launch date. Well, they are not using gravity assists as I understand it. Just going to L2 on it's own power. I'm sure there is a reason forming launch, just wondering what I'm missing. They launch for the equator for the rotational assist, but it's in the opposite direction as I understand things.The moon would be out of the way (gravitationally) in the afternoon too.
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DMT-Nexus member
Posts: 401 Joined: 31-May-2014 Last visit: 30-Dec-2023 Location: The confluence
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No lunar pass? Edit: I guess we’ve only to wait for tomorrow for a chance at more insight. "We dance round in a ring and suppose, while the secret sits in the middle and knows." Robert Frost
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roninsina wrote:No lunar pass?
Edit: I guess we’ve only to wait for tomorrow for a chance at more insight.
Nope, straight shot to L2. Avoiding the moon is one of the launch window conditions.
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DMT-Nexus member
Posts: 350 Joined: 21-Aug-2021 Last visit: 29-Jun-2023 Location: The Bible Belt
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When I first read the initial launch date of December 22nd I told my son it would be December 25th because time is not linear like we think it is and that's how the "Christians" can make the narrative of the wise men and 'North Star' fit. The James Webb telescope is the North Star described in the Bible (wouldn't it be strange if that's actually true, truth is always stranger than fiction so I personally would not be surprised)
I'm excited, super excited. I'm looking forward to learning atmospheric conditions in Alpha Centauri, Alpha Proxima and our other neighbouring solar systems. Its my understanding there are at least 6 planets in the habitable zone within 40 light years from our planet. I also know there will be further observation on Ton 618, Sagittarius A and Neutron Stars, all of which are fascinating and the latter of which I personally believe to be far more terrifying than the former. I feel drawn to the stars. It's almost as if I was an astronaut in a former life but only one passed before my coming so that would be a huge coincidence (or time isn't linear)
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DMT-Nexus member
Posts: 3090 Joined: 09-Jul-2016 Last visit: 03-Feb-2024
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Maybe that, given the pull of earth's rotation, launching in the evening would make it shoot beyond the optimal trajectory. When you launch in the morning you have a whole day to get away from earth, using that slingshot effect. Then you can adjust your trajectory when you're right in front of the ideal, shortest path to L2. Would be my best guess.
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dragonrider wrote:Maybe that, given the pull of earth's rotation, launching in the evening would make it shoot beyond the optimal trajectory. When you launch in the morning you have a whole day to get away from earth, using that slingshot effect. Then you can adjust your trajectory when you're right in front of the ideal, shortest path to L2. Would be my best guess. Yeah, it looks like this is what is going to happen. What confused me is that in the images I saw first (see first image below) it looks like a straight shot to L2. However, a look at the second image below with a little more detail around the earth makes things clearer. The satellite leaves to L2 on the left side of the earth (sunset location). Therefore when it launches in the morning it must go into a low earth orbit over the Pacific ocean, then when it gets above the side of the earth where sunset is happening (~half an orbit), it accelerates and leaves earth's orbit towards towards L2. The Ecuadorian rotation push helps it get there since that energy was put into the near earth orbit. The confusion I had was because a matter of scale. One can't see the earth orbit part of the trip well because it is very small compare to the distance to L2. I would add an informative inset if it where my drawing 🤷♂️ This page describes the launch sequence well. I believe the stage separations happen while I orbit above the earth, and the fin burn finishes above the sunset location on earth. Loveall attached the following image(s): STScI-01FH8W3VQA6DCG0V9KMQZE4DJC.jpg (457kb) downloaded 89 time(s). L2_ngst.gif (37kb) downloaded 89 time(s).
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^Yep, this is exactly what happened. It was so cool to watch 😍 Loveall attached the following image(s): Screenshot_20211225-073329.png (1,263kb) downloaded 71 time(s). Screenshot_20211225-074746.png (1,750kb) downloaded 71 time(s).
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DMT-Nexus member
Posts: 4031 Joined: 28-Jun-2012 Last visit: 05-Mar-2024
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Very cool! Hope it works like a charm, not like hubble who needed massive aftercare.
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Jees wrote:Very cool! Hope it works like a charm, not like hubble who needed massive aftercare. It better, cause it's orbit is 1.5 million km from earth (hubble is only a few hundred 😅
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DMT-Nexus member
Posts: 144 Joined: 10-Sep-2018 Last visit: 05-May-2022 Location: lalaland
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I read it will produce the first images in about 6 months?
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"No, seriously"
Posts: 7324 Joined: 18-Jan-2007 Last visit: 04-Oct-2024 Location: Orion Spur
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I am sooooo happy that the launch went well, also looking forward to the first images! Thank you for the information in this thread Loveall! Kind regards, The Traveler
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DMT-Nexus member
Posts: 4160 Joined: 01-Oct-2016 Last visit: 08-Jun-2024
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Maybe if we smoalk enough we can catch up to it and visit it. Wonderful news, really exciting, and am looking forward to interpretations of data it collates as well as purrrttttyyyyy new pictures. Thanks loveall. One love What if the "truth" is: the "truth" is indescernible/unknowable/nonexistent? Then the closest we get is through being true to and with ourselves. Know thyself, nothing in excess, certainty brings insanity- Delphic Maxims DMT always has something new to show you Question everything... including questioning everything... There's so much I could be wrong about and have no idea... All posts and supposed experiences are from an imaginary interdimensional being. This being has the proclivity and compulsion for delving in depths it shouldn't. Posts should be taken with a grain of salt. 👽
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