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Comment by raattgift | Hacker News Reader

See also this very high-res image (7530x4684) of the spectral density of the Milky Way in radio, which clearly highlights (among other things) these filamentary structures:

https://www.flickr.com/photos/astro_jcm/51847931721

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Judy Schmidt has combined this with Spitzer/WISE infrared data to produce the following image, and has added annotations for some of the more prominent structures (mostly the radio arc and supernova remnants in the galactic centre direction) :

https://www.flickr.com/photos/geckzilla/51854563587/

and the deep link (9144 x 5964, but no annotations) for people who have trouble with flickr's UI:

https://live.staticflickr.com/65535/51854563587_4446b5cd40_o...

I think I need to print that out, that’s wild.

I’ll have to get on my desktop because that site is hilariously useless on my mobile.

Second link is gone.

Working for me.

Not working for me.

Gone for me as well

Never thought about Flickr till now, been almost a decade.

Wild. Letting my imagination run free, there's something in the radio data, second poof from the bottom, that looks like... a contrail? That's not right, but what is that thing?

I think you are looking at the Mouse Pulsar Wind Nebula ("PWN").

Prettier X-ray and radio pictures, and animations : https://www.chandra.harvard.edu/photo/2004/mouse/index.html

A recent summary: https://ui.adsabs.harvard.edu/abs/2018ApJ...861....5K/abstra... ("famous for its spectacular tail"). There is a link to the arxiv preprint below the abstract.

Lots and lots of additional papers about The Mouse, with its conspicuously long tail, PWN G359.23-0.82, driven by its Vela-like pulsar J1747-2958.

https://www.semanticscholar.org/paper/Heartbeat-of-the-Mouse...

Awesome, thank you!

But it’s in Flickr, so all interaction is blocked including zoom.

I see about 600x400 pixels of that photo.

What a wonderful Internet we’ve made for ourselves.

There's a download button in the bottom right, if you hit Original you get the actual original. Here it is: https://live.staticflickr.com/65535/51847931721_c3feebd201_o...

I am just wondering what is it that prevents that link to open the image in a browser window but forces a download of it?

Usually it's a HTTP header that's sent to your browser: Content-Disposition: attachment

Thanks, I had always wondered why some sites behave differently with some file types. A bit annoying, if you just want to glance at something for a while but not keep it around for longer.

There are browser addons that force the browser to ignore this header, for chrome e.g. https://chrome.google.com/webstore/search/undisposition?hl=e....

Or content-disposition as of HTTP/2. Just verified with the browser console that it's sending that header (and using HTTP/2).

Specific to Flickr URLs, its the '_d' at the end. Remove it and you can view it normally in the browser. But as danielbln wrote, that 'Content-Disposition' header is what forces a download in general.

https://live.staticflickr.com/65535/51847931721_c3feebd201_o...

Probably a courtesy from the website owner to not cause a runaway browser tab as it tries to render 60MB of image.

I mean the first internet-connected computers like the imac g3 had only 32 MB of memory.

Somehow I rage slapped my way out of that. No idea what I did.

I just don't understand the underlying motivation to lock things down like that. It like a cortisol fountain and I get wholly irrationally unreasonably mad. It's actually funny in retrospect.

Remember that time Yahoo made Flickr ridiculously slow to access from Europe, to the point where it wasn't actually usable? Lasted near 10 years I believe. Hah, good times.

Override zoom settings in your browser. A must have on mobile. Use it all the time.

That is a strikingly beautiful photo. Thanks for sharing it

This is an incredible image and the filaments are super-mysterious. Do you know how large the objects in the image are? Are we looking at the whole Milky Way or a very zoomed-in part of the center?

Zoomed-in part in the center, "1400 light-years across the centre of the Galaxy." as a linked paper indicates. Milky Way is long, 105700 light years in diameter.

Along these lines, why SARAO's MeerKAT radio telescope (https://www.sarao.ac.za/science/meerkat/about-meerkat/) is the observatory behind this discovery is that it has a good view of the galactic centre because of the orientation of the Earth and solar system within the galaxy : https://commons.wikimedia.org/wiki/File:Motion_of_Sun,_Earth...

Thank you! There are high-res versions of the images from the article embedded in the PDF (linked in the article) as well. (You can use pdfimages to extract them.)

To download this on the iPhone:

– request desktop view

– in the bottom right push the down arrow and select original

- a PNG file will download that you can open and save

This is perfect for a Desktop Wallpaper. Thanks for sharing!

what is the orange beam in the pictures with the telescope?

Most likely a laser guide star[1].

[1] https://en.wikipedia.org/wiki/Laser_guide_star

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