May 20th, 2022
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#13
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RaHoWarrior-SKINHEAD
Join Date: Jun 2010
Location: Shingletown, CA
Posts: 1,629
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Quote:
Originally Posted by Nikola Bijeliti
There is nothing in the article about its being an artist's rendering. This is what the article says:The image was produced by combining data from eight telescopes. It was not drawn by an artist.
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As I said before, the data from the telescopes (radio telescopes not optical telescopes) is what the image is based on (nobody called it a drawing, I hope). However the electromagnetic radiation that the telescopes are detecting is not in the visible spectrum so depicting the data as something visible is ipso facto not a true facsimile. There are certainly no wavelengths in the range of 570-750 nm (yellow, orange and red) anywhere in the data which could have been show in grayscale. The value of the colours is purely aesthetic, there is no scientific justification. That's art.
There are a few different methods used to construct these images (none involve drawing they are computer models). One method used for Sag A* is described in their paper titled 'Selective Dynamical Imaging of Interferometric Data'. You can get an idea of how subjective it is from the abstract:
If two independent groups were given this same data they would produce different images. As I said, it is more art than photography.
I have uploaded all of the relevant papers in which these discoveries were published. All of the data and full details pertaining to how the discoveries were made and the images constructed is there. There is a lot but definitely worth looking at. - https://ulozto.net/file/KpblAhM1TILU...pe-results-zip
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