Live data from Hacker News

I took 50k images of the night sky to make an 81 Megapixel image of the moon

reddit.com

101–110 of 119 posts

Re: I took 50k images of the night sky to make an 81 Megapixel image of the moon

#101
post #23

Great! It is interesting, why Google or anybody else have not made a map of Moon just like Googlemap of Earth. Are there some technical problems?

Tangentially, I recently was using Google Earth, and zoomed all the way out so that the background stars, Milky Way, etc could be seen. Anyone know how accurate that scaling is of the background relative to Earth is? What caught my eye was the scale of Orion.

Re: I took 50k images of the night sky to make an 81 Megapixel image of the moon

#103

Earlier quoted context omitted.

Such as? I didn't see any example of that in the comment threads.

Firefox works great, as others have mentioned.

Have you tried OpenSeadragon? I feel like I have been casting pearls at swines here.

Re: I took 50k images of the night sky to make an 81 Megapixel image of the moon

#104

Windows Photos is having a hard time despite my strong specs. Any alternative to use aside from browsers?

Anyone knows of a GPU accelerated Linux image viewer?

GLiv [1]. Firefox and GLiv both take ~5 seconds to load the image for me, although whilst Firefox takes another ~5 seconds to re-render after zooming in to 100 %, GLiv is instant.

[1] http://guichaz.free.fr/gliv/

Re: I took 50k images of the night sky to make an 81 Megapixel image of the moon

#105

As an amateur astronomer who has looked directly at the moon through a telescope hundreds of times, this photo looks strange and artificial, though I know it's not. I pondered why this was for a bit, and came to the conclusion that its otherworldly quality is actually due to being superior to what one can see directly. At any one moment, direct observation will have artifacts of the air moving between you and the tar…

No no, it is strange and artificial. The stars are comped in from something else, and the moonglow looks like a gaussian blur. Still, it's pretty, and has hopefully inspired people to go stare at the moon. To be fair, most astrophotography is "enhanced" one way or another - I can spend hours screwing around with a single DSO shot after stacking. Here's a quick and dirty 30 second reconstruction using a shot of the mo…

Amateur astronomer here as well that has also done a bit of lunar photography. (envious of your EdgeHD 14...)

I made a similar comment about the moonglow, but thinking a bit I think it's a combination of: - Higher dynamic range than the human eye (combination of stars, moonglow, and high contrast lunar surface both in shadow and in sunlight) - High resolution imaging, and the digital signal processing aspect (noise reduction, deconvolution, etc.)

They combine to make something that looks kinda like reality but is really a mix, and maybe triggers a little bit of the uncanny valley effect.

Re: I took 50k images of the night sky to make an 81 Megapixel image of the moon

#106

Earlier quoted context omitted.

For images of a moderate size such as this one, viewing it on a regular image viewer is less of a hassle.

Such as? I didn't see any example of that in the comment threads.

Here's the image in a high res image viewing tool https://micr.io/i/WFjqr

Re: I took 50k images of the night sky to make an 81 Megapixel image of the moon

#107
post #55

Earlier quoted context omitted.

It's too bad they haven't updated this to act like the modern version of Google Maps. It's like going back in time to the old HTML version.

That's because you aren't using the maps version: https://www.google.com/maps/space/moon/

Oh thank goodness.

Re: I took 50k images of the night sky to make an 81 Megapixel image of the moon

#108
post #90

Becausr the full-res version links went down often yesterday, I'm hosting it on my IPFS node, here's the link (for those on IPFS, if you can afford the bandwidth please pin it to spread the load :) ) https://ipfs.io/ipfs/QmVLTMHtLRhnft3QspDx4qTJeXY6hiib1j77UfQ... Also made it available in torrent form (with the IPFS URL as a web seed) http://www.urlhash.com/124410/mosaic.png.torrent

also works, thanks to the generosity of cloudflare:

https://cloudflare-ipfs.com/ipfs/QmVLTMHtLRhnft3QspDx4qTJeXY...

Re: I took 50k images of the night sky to make an 81 Megapixel image of the moon

#109
post #90

Becausr the full-res version links went down often yesterday, I'm hosting it on my IPFS node, here's the link (for those on IPFS, if you can afford the bandwidth please pin it to spread the load :) ) https://ipfs.io/ipfs/QmVLTMHtLRhnft3QspDx4qTJeXY6hiib1j77UfQ... Also made it available in torrent form (with the IPFS URL as a web seed) http://www.urlhash.com/124410/mosaic.png.torrent

I've got plenty of bandwidth on my server - http://files.jjcm.org/mosaic.png if anyone needs a non-ipfs / magnet link :)

Alternatively, if you have a slower connection I made a lossless webp here which should result in the same output at about 1/10th the size: http://files.jjcm.org/mosaic.webp

Re: I took 50k images of the night sky to make an 81 Megapixel image of the moon

#110
post #65

Windows Photos is having a hard time despite my strong specs. Any alternative to use aside from browsers?

This makes me lose my shit every time I want to see a simple jpg image in Windows 10. WHY?? Even my 14 year old linux laptop can open 100+ MB images faster than W10.

Components of the OS are 20+ years old, it seems. The image handler is one of them. Simply right clicking on it takes 12 seconds for the menu to pop up.
Post reply on HN