this post was submitted on 12 Nov 2024
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Science Memes

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[–] Skua@kbin.earth 24 points 8 months ago (1 children)

I know this is absolutely not the point of this, but for some reason this prompted me to try to get a sense of the resolution the JWST is providing here. Here is the original image without our infinite otter overlord. It's a small part of NGC 3324, which looks like this. If you look at the right hand side of that photo, about in the centre vertically, you'll see the section that the post's image shows. It's rotated 90 degrees between the zoomed in and zoomed out images.

NGC 3324 has an apparent dimension of 11 arc minutes, or 0.183 degrees. So if you imagine a ball that's 10cm across and another one that's 20cm across but twice as far away, they'll have the same apparent dimension. If you imagine a triangle drawn between the observer and the two outside points of the subject, the apparent dimension is the angle of the corner of the triangle at the observer.

So if imagine holding an object at arm's length, say 0.8 m away, how big would that object have to be to have an apparent dimension of 11 arcminutes? About 5 mm. The entire photo - the zoomed out one - is the equivalent of holding a grain of rice at arm's length. And then we get this zoomed in one still showing crazy detail on just a tiny fraction of that

[–] MeatPilot@lemmy.world 14 points 8 months ago (1 children)

That was very informative, space nerd.

[–] Skua@kbin.earth 8 points 8 months ago (1 children)

space nerd is a title i shall wear with pride

[–] MeatPilot@lemmy.world 6 points 8 months ago

You absolutely should! I'm just a space hobbyist or a space peasant by comparison.

[–] Hobbes_Dent@lemmy.world 21 points 8 months ago

Otter space.

[–] IndiBrony@lemmy.world 6 points 8 months ago

See you on the otter side 👌

[–] Zorsith@lemmy.blahaj.zone 3 points 8 months ago

I for one welcome our eldritch space otter overlords.

[–] Hossenfeffer@feddit.uk 3 points 8 months ago

Why, I otter...!

[–] NoIWontPickAName@kbin.earth 2 points 8 months ago

We found the quinlans!!!

[–] Bishma@discuss.tchncs.de 1 points 8 months ago

Sad story. The poor otter heard about the Crab Nebula and went for a feast. But it got as far as Eagle, and realized it made a terrible mistake. All the crabs are back home!

[–] NoIWontPickAName@kbin.earth 0 points 8 months ago

We found the quinlans!!!