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James Webb first images – complete set of high resolution shots now live

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Re: James Webb first images – complete set of high resolution shots now live

#211

Earlier quoted context omitted.

Nothing matters. You live for a while and then you die, but it sure can be a cool trip getting there!

Do you feel that way about your family members? Your spouse? Your children? They don't matter?

Yes. By induction, if nothing matters, then they don't matter either.

It helps you relax and put things in perspective. For example, you can focus on achieving high scores just for the sake of it. Have the kids you want, have the life you want, have the things you want, knowing that it's pointless but that you want it and that's enough.

Re: James Webb first images – complete set of high resolution shots now live

#213

Earlier quoted context omitted.

What would these look like, if you could point a ground telescope at the exact same spot? How much light is in the visible spectrum?

Here's a Hubble-based nebula that was imaged in both infrared and visible. https://esahubble.org/images/heic1406c/

Thanks for sharing this. IMO: Close enough, and good enough :)

Re: James Webb first images – complete set of high resolution shots now live

#214
post #64

Direct links -- Stephan's Quintet (NIRCam and MIRI Composite Image): https://stsci-opo.org/STScI-01G7DB1FHPMJCCY59CQGZC1YJQ.png Southern Ring Nebula (NIRCam and MIRI Images Side by Side): https://stsci-opo.org/STScI-01G79R28V7S4AXDN8NG5QCPGE3.png “Cosmic Cliffs” in the Carina Nebula (NIRCam Image): https://stsci-opo.org/STScI-01G7ETPF7DVBJAC42JR5N6EQRH.png Webb's First Deep Field (NIRCam Image): https://stsci-opo.org…

Thanks for posting these links! It was frustrating that the main NASA PR pages linked photos that were 1280x720. I guess that's to protect their bandwidth costs since much of the general public is probably viewing on mobile anyway and higher res would not only be slower but wasted bits. I just wish NASA had provided a link at the bottom of their low-res image pages to intermediate sized images (~4k) for desktop viewi…

Mobile is actually a great platform to get Hugh resolution, since you can zoom in really easily and navigate the full image.

However, after spending 10 minutes on mobile this morning, I was unable to find any high resolution images, and many images had that anti-pattern of a BS HTML gallery that severely restricts interacting with the image.

Re: James Webb first images – complete set of high resolution shots now live

#215

Earlier quoted context omitted.

Nothing matters. You live for a while and then you die, but it sure can be a cool trip getting there!

Do you feel that way about your family members? Your spouse? Your children? They don't matter?

Why does valuing the journey mean you don't value other people?

Re: James Webb first images – complete set of high resolution shots now live

#216

Earlier quoted context omitted.

The gravitational lensing matches exactly how it looked in Hubble's deep field overlay, so I would guess no the JWST lens is not causing any "false" gravitational lensing? If that's what you are asking.

Thanks! I worded that poorly ; Wouldn't one be able to adjust the perceived path of the photon after time, to adjust for re-normalizing the path of the photon based on the understanding of the gravitational arc imposed on such -- meaning the astro equivalent of "ZOOM. ENHANCE!" :-)

Depending on the orientation, you wouldn't have the right pixels to put for the angle of view from straight on.

Eg, you'd normally see the side view of an object, but the lensing gets you the top and bottom views

Re: James Webb first images – complete set of high resolution shots now live

#217

Earlier quoted context omitted.

Webb's primary camera is infrared, so there is by necessity a choice to be made with how to present the data for humans who can't see in infrared.

I am aware. (And have been eagerly waiting for this moment for ages) It just seems “unscientific” to just use Photoshop and above all curious about the set of rules and algorithms, that enables them to decide which hue to pick for which region, levels, etc.

Not just in astronomy but also in biology, pretty much anyone working with images uses photoshop at least for the final layout. In biology where the rgb overlay is paramount for result interpretation, generally it’s frowned upon to play with channels too much.

But when you have 10k x 5k pixel images and channels that don’t directly correlate with visual spectrum I don’t see why using photoshop extensively is wrong especially for images to be released to the general public. I’m even sure some local touch up is acceptable for me.

Re: James Webb first images – complete set of high resolution shots now live

#218

The exoplanet analysis is what I'm most intrigued by. They're getting much more data than in the past on these. Of course they went for an easy gas giant target first (it has lots of water, which is great), but those Earth-like planets in the Goldilocks zone are gonna be some of the most exciting stuff that comes out of this. Looking forward to it.

So is there any reason not to point this at Proxima Centauri b, like, ASAP?

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

Re: James Webb first images – complete set of high resolution shots now live

#219

Watching the livestream i was more than surprised, that color correction actually happens in Photoshop. Also, there seem to be multiple layer-masks involved for specific regions and objects. I get that you can shift and composite color, based on hue, apply filters etc, but: Photoshop? Curious if anyone can explain, that what we see is actual science or some touched up version of objects in our universe. p.s.: What st…

> actual science or some touched up version of objects in our universe.

Here's a mental model that I found particularly beneficial:

All electromagnetic radiation is the same. In the sense that every proton/neutron is the same. But adding a few more protons/neutrons creates an entirely new element, with entirely new chemical properties. From something simple come incredibly new powerful behaviours. So just as Iron is massively different from Plutonium, Microwaves are massively different from Gamma rays.

What we call "visible light" is not particularly special, except to us, and our specific human biology. It feels more real because it's visible to us, but it's not on the grand scale of the universe.

What we're observing through these telescopes isn't a dog chasing a ball. We're seeing stuff billions of light years away, millions of light years in size, billions of years ago. Passing by trillions of other stars and planets on the way.

These objects are emitting a gargantuan amount of information. Why should we only present the information that happens to be in the same subset as what our primitive primate vision cones can process?

So, no, if you were to teleport to the nebula/galaxy that we're showing images for, it wouldn't look exactly like that to your human eyes. Instead, what you're seeing is what a god with perfect vision of the universe would see. You're seeing the universe for what it is, not just the part of it that is presented to humans.

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