Small precision, because the title of the article is wrong:
JWST is a joint NASA–ESA–CSA project and is actually launched by ESA.
NASA Is Launching a New Telescope That Could Offer Some Cosmic Eye Candy
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Re: NASA Is Launching a New Telescope That Could Offer Some Cosmic Eye Candy
#12Why does this article completely erase contributions from ESA/CSA? There's not a single mention of the other two partners, one of which is doing the actual launch?
Re: NASA Is Launching a New Telescope That Could Offer Some Cosmic Eye Candy
#13Earlier quoted context omitted.
I’ve been following it since I was in college (early 10’s) and I’m beyond excited. I have serious anxiety around the launch going well and getting the telescope safely into orbit. Truly priceless.
For sure! I knew it was crazy complicated, but watched a youtube video that details the deployment procedure....... https://www.youtube.com/watch?v=bTxLAGchWnA It takes almost a month and is craaaazy complicated! Plus it looks like some freaky alien thing.
Another deployment video with some dialogue explaining things:
Re: NASA Is Launching a New Telescope That Could Offer Some Cosmic Eye Candy
#14Here is the news from 2016: After 20 Years, NASA Finally Finished Building The James Webb Space Telescope Now it's ready for the final tests before launch in 2018 https://www.popsci.com/james-webb-space-telescope-is-now-rea...
Not knowing the actual team, but being familiar with space projects, the satellite probably didn't start getting built in earnest until the MCDR in 2010. Most of these kind of projects start off as a spitballing study and then grow and grow and grow into a flight program. That is the time period being cited as starting in the 90s. It's expensive as hell, and took a while to build - but I think, considering what it is…
> The price is a bit insane... but it's also like, wonder of the world level of engineering
So is the price of a bespoke suit.
It's not like you can go down to Sal's Satellite Symposium and pick one of these things off the rack like Levi 501 jeans (or picking up a Toyota RAV4). Most of these types of things are more handmade than even (e.g.) Ferraris, which at least have a production run of a few hundred or thousand cars for any given model.
The closest things for 'production run' of satellites would be GPS, which are ordered in batches:
* https://en.wikipedia.org/wiki/GPS_satellite_blocks#Block_III...
Re: NASA Is Launching a New Telescope That Could Offer Some Cosmic Eye Candy
#15Sadly this is outdated. On September 16th, 2021 the ESA announced a delay of the launch until mid-2023 to repair pieces of the spacecraft dislodged during transportation to the launch site [0]. More info on the video including damages. [0] https://youtube.com/watch?v=dQw4w9WgXcQ
ESA's own website doesn't mention any such thing as of 2021-09-18: https://www.esa.int/Science_Exploration/Space_Science/Webb/
"Launch date: 18 December 2021"
This seems like the sort of thing they would take some trouble to keep up to date. Got a source I can trust more than some random YouTube video?
Re: NASA Is Launching a New Telescope That Could Offer Some Cosmic Eye Candy
#16Why does this article completely erase contributions from ESA/CSA? There's not a single mention of the other two partners, one of which is doing the actual launch?
Besides NPR obviously having an American bias, I tried to find a funding source breakdown. Best I could find was from wikipedia:
"ESA is contributing about €300 million, including the launch. The Canadian Space Agency pledged $39 million Canadian in 2007"
Seems ESA contributed about 3%, and CSA .3%. It may just be a biases ommision, but I also wouldnt be surprised if theres some salty feeling about who actually paid for the telescope.
Re: NASA Is Launching a New Telescope That Could Offer Some Cosmic Eye Candy
#17Ahead of prediction!
Re: NASA Is Launching a New Telescope That Could Offer Some Cosmic Eye Candy
#18Is it going to provide eye candy? I’ve heard it’s supposed to work in non-visible spectrum like infrared?
Re: NASA Is Launching a New Telescope That Could Offer Some Cosmic Eye Candy
#19Why does this article completely erase contributions from ESA/CSA? There's not a single mention of the other two partners, one of which is doing the actual launch?
Besides NPR obviously having an American bias, I tried to find a funding source breakdown. Best I could find was from wikipedia: "ESA is contributing about €300 million, including the launch. The Canadian Space Agency pledged $39 million Canadian in 2007" Seems ESA contributed about 3%, and CSA .3%. It may just be a biases ommision, but I also wouldnt be surprised if theres some salty feeling about who actually paid…
From wiki: “By the mid-2010s, the U.S. contribution was still expected to cost US$8.8 billion. In 2007, the expected ESA contribution was about €350 million. With the U.S. and international funding combined, the overall cost not including extended operations is projected to be over US$10 billion when completed”
Re: NASA Is Launching a New Telescope That Could Offer Some Cosmic Eye Candy
#20Is it going to provide eye candy? I’ve heard it’s supposed to work in non-visible spectrum like infrared?
> Is it going to provide eye candy? I’ve heard it’s supposed to work in non-visible spectrum like infrared?
Most astronomical images (even those taken in the optical) are not as a human eye would see/perceive the scene. They're almost always made in a way to highlight features of scientific interest, look aesthetic, or both. And in the case of images outside the visual spectrum, they are assigned representative colors.
Another angle is that astronomical images are generally intensity images, taken through a single filter, rather than inherently color images. Several of these images, taken through different filters, can be combined to make a color image. However, even if taken in the visual portion of the spectrum, the responses of the filters generally won't match the human eye's responses, so the images aren't what the human eye would see.
For example, the Spitzer Space Telescope (covering 3.6-160 microns), captured images of astrophysical objects and these images were used to generate representative images:
- Helix nebula https://en.wikipedia.org/wiki/File:Comets_Kick_up_Dust_in_He...
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- Cepheus B and C https://en.wikipedia.org/wiki/File:PIA23126-CepheusC%26Bregi...
JWST operates largely in the infrared (though it has some overlap with the visual range), but will undoubtedly capture wonderful images in the infrared and these images will be combined to make stunning pseudo-color images.