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

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

#71

Post by sevensor »

geolgau wrote: post #65
diegoperini wrote: post #21

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.

Viewnior barely breaks a sweat on my (powerful by 2014 standards) machine

    %CPU %MEM    VSZ   RSS TTY      STAT TIME COMMAND
     2.8  1.6 823764 277528 pts/6   Sl+  0:06 viewnior updated mosaic.png
That's about 804 megabytes allocated, 271 megabytes resident. Took about 2 seconds to read and render the file.

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

#72

Post by jannes »

Sharlin wrote: post #59
omilu wrote: post #50

Is the haze around the moon sun light scattering because of moon dust?

No. This photo (well, photos) is taken from the bottom of an air sea, which is where the scattering happens.

Are you referring to Earth's atmosphere as an air sea? Is that an actual term being used? I couldn't find anything about this term in a quick ddg search.

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

#73

Post by porphyrogene »

kowdermeister wrote: post #18
Waterluvian wrote: post #9

Earlier quoted context omitted.

Is it just me or are 4k monitors running in 1080p worse than straight 1080p monitors?

Of course it's worse, since you have more pixels than image data.

By that logic Apple's Retina displays would be worse than non-Retina displays. Down-sampling decreases eye strain and makes the image smoother. It is only an issue when dealing with fine lines that our eyes watch very closely, such as in text.

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

#74

Post by PuffinBlue »

k4r1 wrote: post #20

All the download links are down at the moment. Here's a torrent link: magnet:?xt=urn:btih:j6ixrzpitvpmkx5tgroy6utcpqr5hhhj&dn=updated%20mosaic.png&xl=304863698&fc=1

There's a 4k wallpaper version. 213MB. Moon centered in the screen.

magnet:?xt=urn:btih:6f64830246540020bf26b87b5c269088d563ac5d&dn=4K-mosaic.png

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

#75

Post by Theodores »

enriquto wrote: post #45
Theodores wrote: post #44

If anyone wants to look at this image properly then you need OpenSeadragon and VIPS. OpenSeadragon enables you to view this image at full resolution without your device keeling over, VIPS enables you to make the image tiles required to get OpenSeadragon to work. OpenSeadragon has only ever made it to the academic world, in this age of Instagram people want average resolution selfies that take three seconds to look at…

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.

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

#76

Post by icebraining »

jannes wrote: post #72
Sharlin wrote: post #59

Earlier quoted context omitted.

No. This photo (well, photos) is taken from the bottom of an air sea, which is where the scattering happens.

Are you referring to Earth's atmosphere as an air sea? Is that an actual term being used? I couldn't find anything about this term in a quick ddg search.

I think "ocean of air" is more common.

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

#78

Post by autokad »

jcurbo wrote: post #54
omilu wrote: post #50

Is the haze around the moon sun light scattering because of moon dust?

No, it's partially artistic, partially light scattering in the Earth's atmosphere from the moonlight and the exposure settings he used. The moon does have a very tenuous atmosphere but nothing thick enough to cause this effect.

> "it's partially artistic"

When I view the moon with my telescope, I see the same haze. I think its earths atmosphere, not the moon that causes it.

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

#79

Post by kowdermeister »

porphyrogene wrote: post #73
kowdermeister wrote: post #18

Earlier quoted context omitted.

Of course it's worse, since you have more pixels than image data.

By that logic Apple's Retina displays would be worse than non-Retina displays. Down-sampling decreases eye strain and makes the image smoother. It is only an issue when dealing with fine lines that our eyes watch very closely, such as in text.

If you turn your apple retina display to 1080p mode, then I would think it's not that good when there's a 1:1 correspondence between physical pixels and pixel data. However when the size stays the same, I wouldn't expect much difference.

A 32 inch 4k display downsampled to 1080p, well... :)

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

#80

Post by porphyrogene »

kowdermeister wrote: post #79
porphyrogene wrote: post #73

Earlier quoted context omitted.

By that logic Apple's Retina displays would be worse than non-Retina displays. Down-sampling decreases eye strain and makes the image smoother. It is only an issue when dealing with fine lines that our eyes watch very closely, such as in text.

If you turn your apple retina display to 1080p mode, then I would think it's not that good when there's a 1:1 correspondence between physical pixels and pixel data. However when the size stays the same, I wouldn't expect much difference. A 32 inch 4k display downsampled to 1080p, well... :)

A down-sampled image has less noise than an image in its native resolution. You can experiment on your own monitors if you don't believe the theory, just remember to use font smoothing for non-native resolutions. You can also ask about it on the appropriate stack exchange, it is a frequent topic of confusion.
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