5 ms·
editing that image reveals all kinds of details: https://imgur.com/a/TvQsgbA https://imgur.com/a/TvQsgbA (and I don't even know what I'm doing)
by localhostdotdev 7y ago
editing that image reveals all kinds of details: https://imgur.com/a/TvQsgbA https://imgur.com/a/TvQsgbA (and I don't even know what I'm doing)
- vanderZwan 7y agoMind you, that's a JPG you are editing, so in the 8 bit sRGB color space. That means manipulations can lead to errors and illusions due to the color space being non-linear and clipped[0]. The original data was likely linear and at a much higher precision. If the source was a 16 bit linear grayscale PNG for example you could be much more assured you're not seeing the effects of JPG compression and things that were actually measured. EDIT: Found better sources: 16-bit sRGB PNG: https://eventhorizontelescope.org/files/eht/files/20190410-78m-4000x2330.png?m=1554877782 https://eventhorizontelescope.org/files/eht/files/20190410-7... 180 MiB original TIFF: https://www.eso.org/public/images/eso1907a/ https://www.eso.org/public/images/eso1907a/ [0] https://www.youtube.com/watch?v=LKnqECcg6Gw https://www.youtube.com/watch?v=LKnqECcg6Gw
- localhostdotdev 7y agoThanks a lot for the explanation and the better sources, the TIFF image should probably be a torrent because it's not downloading very fast, the PNG image does give much nicer renders: https://i.imgur.com/zZcD5Na.jpg https://i.imgur.com/zZcD5Na.jpg
- Obi_Juan_Kenobi 7y agoThose 'details' aren't real. The image is the result of a complex interpolation algorithm that takes very noisy and incomplete data as its input. The resolution is quite limited.
- PavlikPaja 7y agoI do (I think...) the bands are atifacts: https://imgur.com/a/dhN9Pf9 https://imgur.com/a/dhN9Pf9