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James Webb Telescope Updates

sjastro

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Mind blowing!
There's too much stuff! (It just aint natural, man!)
Further information from ESA to be released 12th July.
The image of the Carina Nebula will be interesting when comparing a 6.5 metre infrared telescope with my humble 0.28 metre image of the same object.

 
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Green Sun

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The release of the first image will be moved up to a preview event taking place on tomorrow, July 11th, at 5:00 PM EDT:

https://twitter.com/NASA/status/1546290906046816256

https://www.nasa.gov/press-release/nasa-updates-coverage-for-webb-telescope-s-first-images-reveal


Can't wait! I'm extremely excited to see the first images roll in!
 
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Green Sun

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The first image, a deep field of SMACS 0723, has been released!
https://www.nasa.gov/webbfirstimages



Four more images will be released tomorrow, with the press conference starting at 10:30 AM EDT:
- An image of a Gas Giant Exoplanet
- Two images of the Eight-Burst Nebula (NGC 3132 - Wikipedia)
- An image of Stephan's Quintet (Stephan's Quintet - Wikipedia)

For comparison, below is a Hubble capture of SMACS 0723:



I can't wait to see even more tomorrow.
 
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Halbhh

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I wonder if it can zoom in on planets of interest.
Yes. Any telescope can be aimed at one particular spot. What a scope can see there varies, and Webb ought to be able to take spectral of star light passing through planetary atmospheres for some exoplanets, which will be interesting (and may lead to breathless headlines that should be treated with some caution in my experience).
 
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Halbhh

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Leaviathan

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Yes, any telescope can. But many are hoping it will be able to capture surface details, discover orbital satellites etc..
 
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Halbhh

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Yes, any telescope can. But many are hoping it will be able to capture surface details, discover orbital satellites etc..
Ah, that level of resolution is far beyond its resolving power, sadly.
 
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Halbhh

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Interesting the verbal statement that while the Hubble took 2 weeks of continuous observation to image the famous Hubble Deep Field, the person said that Webb did the image they displayed 'before breakfast', which maybe meant overnight or such? I'll be curious to learn more on the relative exposure times, as one person said a number in one article a factor of '100', which I'd need to get more detail on, as Webb has about 6.25 times more mirror area than Hubble, but another factor could be about how Webb images are gathering at a longer wavelength, more infrared, Webb might for instance at least for many objects be in a more intense area of the spectrum, but that's another detail I'll look for later also. (Webb images are like black and white (monochrome is a more accurate word) and then must be colorized to show the general public)
 
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Halbhh

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loveofourlord

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yeah I know that for many the colours are false, because they are showing you infrared/x-ray/radio/visible all combined to show you all the details you couldn't see with naked eye.
 
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Halbhh

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(click on image for a larger version; you can toggle back and forth between the whole image and a close up areas by clicking on that spot, and then again)
 
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Halbhh

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(click on image for a larger, more close up version; you can then move around the larger than your screen image by using the slider bars at bottom and side; another way to look closer at one area is to click on that spot, and you can toggle back and forth between the whole image and the close up areas by clicking again)
 
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Green Sun

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The full list of releases, with the full res images of all the pictures released today is located here:
Science Releases
All the future images releases will also be here, so if you're interested in future pictures, keep an eye on it!

That image of the Carina Nebula Halbhh shared is perhaps one of my favorite pictures of space ever taken. I can't stop looking at it. It's truly, utterly magnificent!

I know that for even the "continuous" observations, they do it in different segments. They way I've heard it described is that the photosensors are so sensitive, that they have to occasionally let them "rest" by blocking out the light to avoid damaging them. Then, they'll uncover them again, and take in more light.

And it seems that Webb can do some various bits of science blazingly fast - This spectrum only took about 4 and a half minutes of exposure!
https://twitter.com/astronomolly/status/1546865893254303744
 
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Green Sun

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The other images released today were a set of pairs, showing off the different ways JWST can collect light of different wavelengths.

First, we have two images of the Eight-Burst Nebula - The one on the left taken with the Near-Infrared Camera (NIRCam), while the one on the right is taken with the Mid-Infrared Instrument (MIRI):



You can see that what appears to be a single star in the left picture, is actually a pair of stars, the white dwarf star that created the nebula when it shed it's outer layers, along with it's companion star.

And then we have a picture of a group of galaxies known as Stephan's Quintet - The first image was a composite using both MIRI and NIRCam, while the second is using NIRCam alone:


And here's the MIRI component of the composite image:
 

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