Re: First ever photo of a Black Hole!
Originally Posted by Surfermom
Good catch, Realist. I mistakenly referred to the M87 black hole as a photo (suggesting that it was taken in a visible wavelength), not an image. You are correct, it is most definitely and amalgam of radio signals collected by many radio telescopes. It's an image.
When you say "an image" what that really means is that at some point a HUMAN has taken radio wave data and used his/her own interpretation of that to translate it into a visual picture.
It is therefore just a piece of art is it not? Technically the structure of the image dutifully conveys the reality of the radio sources but in terms of artistry, colours etc those are surely made up by the artist.