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Webb Telescope Image Gallery

webbtelescope.org

76 pointsAmorymeltzer16 comments

Browsing nightmare. Why does the image gets covered as soon as I focus on it?

Yes, the experience on mobile browsers is horrible.

This. It's like I'm pointing at various things in a room, and there's someone running around with a big "This One?" sign that they keep moving in front of my object of interest. Workaround: point at one thing while looking at another.

Absolutely stunning images! Just look at Wolf-Rayet 140

https://webbtelescope.org/contents/media/images/01GEJB2906TM...

I wish they dropped that awful orange slider on mouse over...

Agreed on the mouse over

It's unfortunately missing quite a few, e.g. like the Jupiter images:

https://blogs.nasa.gov/webb/2022/08/22/webbs-jupiter-images-...

(agree again about the obnoxious orange mouse-over).

My favorite results from Webb are the ones we can't "see": transit and emission spectra.

I'm hoping we pick up on an exoplanet venting hallmark biologicals. Or maybe, just maybe, industrials. That would profoundly change our lives forever.

https://webbtelescope.org/contents/media/images/2022/042/01G...

https://webbtelescope.org/contents/media/images/01GCW1EQ0GND...

Does someone know why the Webb telescope give this strange "sharp glare" on many of the shiny star-shaped objects ? Is it some sort of AI upscaling or is it raw data coming from the sensors ?

Those are diffraction spikes. They are caused by the segmented mirrors and struts. Even the Hubble telescope has them just a different shape. The spikes are more noticeable on brighter point like objects like stars.

https://en.wikipedia.org/wiki/Diffraction_spike

Can they be processed away? I presume that if the central pixel saturates then the calculations get more fraught, but it should still be possible.

According to Dr Becky (https://www.youtube.com/watch?v=385JLByRtVE) there are ways to remove it but its not a perfect process.

I heard that by looking farther away we should see older less formed galaxy but that it isn’t the case.

Do someone know something about it?

Forms of lights and our capture of it creates our “vision”. The longer the distance it took the light to travel from the objects to our telescope, the more time it takes. By the time it is finally captured, we are watching an outdated light!

An outdated galaxy.

I hope that’s what you meant.

Yes, but I heard that they appear similar to the closer one, in opposition to what was expected.

What I heard it now they think galaxies started forming pretty early after the big bang.

There's also the hypothesis of angular diameter turnaround: that at a sufficient distance, more distant objects would appear larger rather than smaller, because they subsumed a larger fraction of the universe at the time.

This has not been observed by JWST so far as I'm aware.

Memorialised in an xkcd comic, of course (Explain version linked here): <https://www.explainxkcd.com/wiki/index.php/2622:_Angular_Dia...>

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