Most images of black holes are illustrations(vox.com)
vox.com
Most images of black holes are illustrations
https://www.vox.com/science-and-health/2018/1/8/16822272/black-hole-looks-like-what/
1 comments
Yea...not in the visible spectrum, so you have to be imaginative. Famous theoretical physicist kip Thorne (expert on black holes) uses Mathematica to take an image of space and use the equations for black holes to warp the images used for things like the Interstellar movie.