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The James Webb Space Telescope Thread

sidis

By sidis
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sidis

sidis 9734

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STSCI-J-p22035a-m-1959x2000.jpg

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This first image from NASA’s James Webb Space Telescope is the deepest and sharpest infrared image of the distant universe to date. Known as Webb’s First Deep Field, this image of galaxy cluster SMACS 0723 is overflowing with detail. Thousands of galaxies – including the faintest objects ever observed in the infrared – have appeared in Webb’s view for the first time. This slice of the vast universe covers a patch of sky approximately the size of a grain of sand held at arm’s length by someone on the ground.

https://www.nasa.gov/webbfirstimages

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sidis

sidis 9734

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12 minutes ago, Paper_jam said:

It turns out deep space is still really into disco.

With this being an IR telescope, how do they translate that into a visible "color" image? And why do some objects have giant diffraction spikes? I thought that was an optical phenomenon.

 

To your first question, a lot of things going on there. 

https://www.nature.com/articles/s41586-018-0835-2

https://www.nasa.gov/content/goddard/webb-conversations-its-all-about-infrared-why-build-the-james-webb-space-telescope

to the second, the objects that are showing spikes are stats that are insanely closer to the telescope than most of the image. That is a lot to do with it. 

here is some detailed explanation. 

https://bigthink.com/starts-with-a-bang/james-webb-spikes/

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freyguy

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32 minutes ago, sidis said:

Not even close. Here’s a comprehensive rundown of the difference. 

https://www.jwst.nasa.gov/content/about/comparisonWebbVsHubble.html

I'm not talking about the differences between the scopes.  I'm just saying that the pic they took is old hat.

show us some real space shit.  Not something I've already seen.

image.thumb.png.9a4954c5f447f7997d6af442b3d6649c.png

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Hermanator

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1 hour ago, sidis said:

To your first question, a lot of things going on there. 

https://www.nature.com/articles/s41586-018-0835-2

https://www.nasa.gov/content/goddard/webb-conversations-its-all-about-infrared-why-build-the-james-webb-space-telescope

to the second, the objects that are showing spikes are stats that are insanely closer to the telescope than most of the image. That is a lot to do with it. 

here is some detailed explanation. 

https://bigthink.com/starts-with-a-bang/james-webb-spikes/

Due to distance variance of objects in the image. 

This will help study objects out in the outer reaches of the observable universe. Since the space between is expanding faster than the speed of light the observable universe is constantly shrinking for us and we'll never have any way to know what's outside of it. 

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Biff Tannen

Biff Tannen 45492

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1 hour ago, freyguy said:

I'm not talking about the differences between the scopes.  I'm just saying that the pic they took is old hat.

show us some real space shit.  Not something I've already seen.

image.thumb.png.9a4954c5f447f7997d6af442b3d6649c.png

Yeah!  I want a different universe!  Not the same one we live in!

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South Austin

South Austin 52135

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Larry: Okay. That means that our whole solar system could be, like one tiny atom in the fingernail of some other giant being. This is too much! That means one tiny atom in my fingernail could be . . .

Jennings: Could be one little tiny universe.

Larry: Could I buy some pot from you?

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conVINCEd

conVINCEd 21468

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27 minutes ago, 52-80 said:

Sigma-Ultra-Telephoto-Zoom-Lens-1.jpg

I’m not a camera guy.  It is an eye-opening experience to see how much you can pay for a single camera lens when planning a safari.  I didn’t feel the need to get a closeup of the lion’s nose hair for more than the entire trip cost.

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52-80

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1 minute ago, conVINCEd said:

I’m not a camera guy.  It is an eye-opening experience to see how much you can pay for a single camera lens when planning a safari.  I didn’t feel the need to get a closeup of the lion’s nose hair for more than the entire trip cost.

If the lion gets too close it serves as a defensive weapon

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atomheartbevo

atomheartbevo 89412

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17 minutes ago, Pato del Muerto said:

take the same picture their last camera took, just to see if it was better?

Know how I know you aren’t an amateur photographer who buys a new camera every few years in the belief the latest and greatest will make you a better photographer?

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