The Flat Earth Society

Other Discussion Boards => Technology & Information => Topic started by: dbamember on December 27, 2021, 11:24:16 AM

Title: James Webb telescope launches!
Post by: dbamember on December 27, 2021, 11:24:16 AM
The James Webb telescope has finally been launched.
It will dramatically increase our knowledge of the universe and it’s history.
It’s been a long time coming. Congrats to NASA and the worldwide team working in this project, including
the Arianne folks in France who built the launch vehicle. Bon Chance, James Webb!
Title: Re: James Webb telescope launches!
Post by: AllAroundTheWorld on December 29, 2021, 08:01:43 PM
Good video here showing some observations made when it launched and how they are explained by a rotating globe earth

https://m.youtube.com/watch?v=IR7VaBy7lKc

It’s a bit technical but there’s a good animation which explains the observations pretty clearly.
Title: Re: James Webb telescope launches!
Post by: scomato on March 17, 2022, 08:38:35 PM
First image back from the alignment test, taken in near-infrared on a star 100 times fainter than the human eye can see. The galaxies in the background!

https://www.nasa.gov/press-release/nasa-s-webb-reaches-alignment-milestone-optics-working-successfully

(https://www.nasa.gov/sites/default/files/thumbnails/image/telescope_alignment_evaluation_image_labeled.png)
Title: Re: James Webb telescope launches!
Post by: Tron on March 17, 2022, 09:22:02 PM
I'm really excited about this.  :o
Title: Re: James Webb telescope launches!
Post by: stack on March 17, 2022, 09:25:53 PM
Me too. I think those elongated bright spots are actually galaxies.
Title: Re: James Webb telescope launches!
Post by: Tron on March 17, 2022, 09:31:30 PM
Yea I almost ignored them until I looked again..  so subtle.
Title: Re: James Webb telescope launches!
Post by: Lord Dave on March 17, 2022, 09:39:05 PM
Its very impressive.
Title: Re: James Webb telescope launches!
Post by: Tom Bishop on March 17, 2022, 10:04:03 PM
Good video here showing some observations made when it launched and how they are explained by a rotating globe earth

https://m.youtube.com/watch?v=IR7VaBy7lKc

It’s a bit technical but there’s a good animation which explains the observations pretty clearly.

Not surprising you would believe this. At the beginning of the final animation which supposedly "shows" how it works from the satellite's view, it is stated that it is based on the epheremedes and orbital elements shown at the start of the video, which he assumes is based on orbital mechanics, rather than being meaningless like the Ancient Babylonian epheremedes for the planets, which was capable of accurate prediction long before orbital mechanics was dreamt of.

At the beginning of that video says that he got the epheremedes from his previous video (https://www.youtube.com/watch?v=fI-VD5QWQYU). In the description of that previous video it references an online calculator. In both this second video and in the first video he shows us a screen with blue links like "Find orb", indicating that he's just using a calculator he found on the internet and didn't actually compute it himself:

(https://i.imgur.com/ms1QAsa.png)

This is a load of fallacies and assumptions which merely assumes that the math is correct and meaningful without any sort of real verification, and does not actually explain anything.
Title: Re: James Webb telescope launches!
Post by: stack on March 17, 2022, 10:11:09 PM
Good video here showing some observations made when it launched and how they are explained by a rotating globe earth

https://m.youtube.com/watch?v=IR7VaBy7lKc

It’s a bit technical but there’s a good animation which explains the observations pretty clearly.

Not surprising you would believe this. In the final animation which supposedly "shows" how it works from the satellite's view, it is stated that it is based on the epheremedes and orbital elements shown at the start of the video, which he assumes is based on orbital mechanics, rather than being meaningless like the Ancient Babylonian epheremedes for the planets, which was capable of accurate prediction long before orbital mechanics was dreamt of.

At the beginning of that video says that he got the epheremedes from his previous video. In the description of that video it references an online calculator. In both this second video and the first video he shows us a screen with blue links like "Find orb", indicating that he's just using a calculator he found on the internet and didn't actually compute it himself:

(https://i.imgur.com/ms1QAsa.png)

This is a load of fallacies and assumptions which just assumes that the math is correct and meaningful without any sort of real verification, and does not actually explain anything.

What's the point you are trying to make? That the video timelapse he presents of the path of JWST he captured is based on Babylonian ephemerides and not the orbital mechanics calculator he used?
Title: Re: James Webb telescope launches!
Post by: Tom Bishop on March 17, 2022, 10:21:56 PM
It's a video guy mumbling that he sees a satellite making zig-zags in the sky, that he looked at an online calculator and got sky coordinates that make zig-zags, and then when he puts those coordinates into a 3D program from the satellite's view it makes the earth zig-zag, with an overlay of the ground view sky zig-zag that seems to match, while essentially proclaiming "Seee!!!".

Utterly daft.
Title: Re: James Webb telescope launches!
Post by: stack on March 17, 2022, 10:23:07 PM
It's a guy mumbling that he sees a satellite making zig-zags in the sky, that he looked at an online calculator and got sky coordinates that make zig-zags, and then when he puts those coordinates into a 3D program from the satellite's view it makes the earth zig-zag, with an overlay of the ground view sky zig-zag that seems to match while proclaiming "Seee!!!".

Utterly daft.

So you have a problem with the explanation as to why JWST was zig-zagging, not the fact that he (and others) show JWST flying through space?
Title: Re: James Webb telescope launches!
Post by: AllAroundTheWorld on March 17, 2022, 11:32:37 PM
It's a guy mumbling that he sees a satellite making zig-zags in the sky, that he looked at an online calculator and got sky coordinates that make zig-zags, and then when he puts those coordinates into a 3D program from the satellite's view it makes the earth zig-zag, with an overlay of the ground view sky zig-zag that seems to match while proclaiming "Seee!!!".

Utterly daft.

So you have a problem with the explanation as to why JWST was zig-zagging, not the fact that he (and others) show JWST flying through space?
I think he's just trolling about stuff he doesn't understand, it's kinda his thing. Not worth engaging with.
As for this thread, it is an exciting piece of kit. Hubble has given us a load of amazing images down the years, from what I've read this one is orders of magnitude more powerful so we should get some really spectacular stuff from it.
Title: Re: James Webb telescope launches!
Post by: stack on March 18, 2022, 01:29:09 AM
An absolutely elated astrophysicist talking about the latest image from JWST. Her enthusiasm is infectious.

https://youtu.be/1nOX66G5q9E
Title: Re: James Webb telescope launches!
Post by: ichoosereality on March 18, 2022, 09:14:16 AM
I think he's just trolling about stuff he doesn't understand, it's kinda his thing. Not worth engaging with.
As for this thread, it is an exciting piece of kit. Hubble has given us a load of amazing images down the years, from what I've read this one is orders of magnitude more powerful so we should get some really spectacular stuff from it.
Yea really exciting stuff.   Here is a page comparing Hubble and JWST, not just much better images but from further back in time so amazing discoveries are likely coming.  https://jwst.nasa.gov/content/about/comparisonWebbVsHubble.html .   In addition to the difference described another is that the electronics on JWST are a good 30 years newer than Hubble (so faster, more capable, higher resolutions etc).  It's glorious.  The complexities involved with it just "unpacking" itself were incredible and all worked flawlessly.  What an achievement.
Title: Re: James Webb telescope launches!
Post by: crutonius on March 29, 2022, 01:16:10 AM
Indeed after 3 months I'm finally able to start the process of unclenching my butt cheeks.

Title: Re: James Webb telescope launches!
Post by: garygreen on March 29, 2022, 02:39:53 AM
i can't get excited until the first science-quality images come back.

i'm not superstitious, but i am a little stitious.
Title: Re: James Webb telescope launches!
Post by: JSS on March 29, 2022, 10:58:25 AM
I was convinced it was going to be a massive failure and something was going to go wrong.  Launch failure, failure to get into the right orbit, and most likely failure to deeply the sun shield or unfold all the mirror parts.

It was almost unreal how smoothly things went, and I'm finally starting to relax as well and looking forward to all the pictures and science that will be coming out of this.

Takes me back to the Hubble launch, but better as it seems like they didn't screw up the primary mirrors this time. :D
Title: Re: James Webb telescope launches!
Post by: AllAroundTheWorld on May 04, 2022, 06:12:22 PM
https://www.universetoday.com/155686/now-we-can-finally-compare-webb-to-other-infrared-observatories/

Holy shit this thing is awesome
Title: Re: James Webb telescope launches!
Post by: Lord Dave on May 04, 2022, 07:14:54 PM
It IS!  Its fucking amazing.
Title: Re: James Webb telescope launches!
Post by: Rama Set on May 04, 2022, 09:05:01 PM
That’s a wild jump in resolution.
Title: Re: James Webb telescope launches!
Post by: AllAroundTheWorld on May 05, 2022, 07:14:10 AM
It must be annoying for the NASA Image Faking Department to have to spent so much time on their fake images these days. Back in the day a few fuzzy blobs and it’s job done.
Title: Re: James Webb telescope launches!
Post by: scomato on July 11, 2022, 11:25:15 PM
The first full-color image is finally here!! The photo represents an area in the sky the size of a grain of sand held out at arms length by someone on the ground and contains countless thousands of galaxies!!!

(https://www.nasa.gov/sites/default/files/thumbnails/image/main_image_deep_field_smacs0723-5mb.jpg)

Title: Re: James Webb telescope launches!
Post by: markjo on July 12, 2022, 12:19:28 AM
The first full-color image is finally here!! The photo represents an area in the sky the size of a grain of sand held out at arms length by someone on the ground and contains countless thousands of galaxies!!!

(https://www.nasa.gov/sites/default/files/thumbnails/image/main_image_deep_field_smacs0723-5mb.jpg)

And it's not even a science image.  It's an engineering image from the Fine Guidance Sensor test.
Quote from: https://blogs.nasa.gov/webb/2022/07/06/webbs-fine-guidance-sensor-provides-a-preview/
This Fine Guidance Sensor test image was acquired in parallel with NIRCam imaging of the star HD147980 over a period of eight days at the beginning of May. This engineering image represents a total of 32 hours of exposure time at several overlapping pointings of the Guider 2 channel. The observations were not optimized for detection of faint objects, but nevertheless the image captures extremely faint objects and is, for now, the deepest image of the infrared sky.
Title: Re: James Webb telescope launches!
Post by: Tron on July 12, 2022, 12:24:31 AM
Its a party!
Title: Re: James Webb telescope launches!
Post by: scomato on July 15, 2022, 05:00:52 AM
Some more!

(https://preview.redd.it/7una7b7ml5b91.png?width=1320&format=png&auto=webp&s=4fb376f0fc0d059947b76b7260097a3f6eaff946)

(https://preview.redd.it/wfc2ndrml5b91.png?width=1430&format=png&auto=webp&s=38e9102213be300fe44fea0705e47376a2bfd2ee)

(https://preview.redd.it/yr8rw1anl5b91.jpg?width=1430&format=pjpg&auto=webp&s=853d77f007846107e022636249b5e100d585f577)
Title: Re: James Webb telescope launches!
Post by: scomato on July 15, 2022, 05:45:01 AM
Comparison of the same image from Hubble to JWST

(https://i.redd.it/9uyhwijeo0b91.gif)
Title: Re: James Webb telescope launches!
Post by: Tron on July 15, 2022, 03:12:50 PM
A very good photo...  These are the kinds of photos that keep you going. 

https://www.youtube.com/watch?v=fiQLooonT6U

Title: Re: James Webb telescope launches!
Post by: Rama Set on July 15, 2022, 03:41:55 PM
Comparison of the same image from Hubble to JWST


Is that the Very Deep Field or Ultra Deep Field?
Title: Re: James Webb telescope launches!
Post by: AllAroundTheWorld on July 15, 2022, 03:59:02 PM
Also, these are just test images. This is just the first stuff they've published.
And it's better than some of the best Hubble images which took weeks to produce.
It's like the first couple of games or demos of a next gen console, before coders have worked out how to really push the hardware.
There's going to be some incredible stuff coming in the next few years.
Title: Re: James Webb telescope launches!
Post by: garygreen on July 15, 2022, 04:16:15 PM
i picked a handful of high-redshift targets for this collaboration. i am extremely excited.

https://twitter.com/ceers_jwst/status/1547624651630657538
Title: Re: James Webb telescope launches!
Post by: stack on July 15, 2022, 04:18:11 PM
Here's a little perspective on one of the test images:

https://youtu.be/p1mObQX7NN8
Title: Re: James Webb telescope launches!
Post by: Rama Set on July 15, 2022, 04:51:03 PM
i picked a handful of high-redshift targets for this collaboration. i am extremely excited.

https://twitter.com/ceers_jwst/status/1547624651630657538

Thats very cool.  Are the targets mostly quasar/pulsar/magnetar type objects?
Title: Re: James Webb telescope launches!
Post by: garygreen on July 15, 2022, 05:34:45 PM
Are the targets mostly quasar/pulsar/magnetar type objects?

massive irregular/peculiar galaxies that are at the limits of what hubble can see. one of CEERS' primary goals is to better understand how galaxies evolve over cosmic timescales — how do galaxies accumulate mass over time? how often do they crash together? how do their shapes evolve? what role does star-formation play in all of this? those sorts of questions.
Title: Re: James Webb telescope launches!
Post by: markjo on July 15, 2022, 09:00:40 PM
Comparison of the same image from Hubble to JWST


Is that the Very Deep Field or Ultra Deep Field?
NOVA on PBS just did a show on JWST, including the just released images.  Someone had mentioned how the Hubble deep field and ultra deep field images took many days of observations while the similar JWST image took a fraction of that time.  They said that, because of JWST's light gathering ability, pretty much every image it takes will be a deep field.