I had a conversation with a friend about Black Hole images. I showed him a picture of a black hole taken by the Hubble telescope shown here: http://hubblesite.org/newscenter/archive/releases/1995/47/image/a/ He claims that it's not a direct image of a black hole because we can't see black holes directly. That is merely the matter surrounding it that has been affected by the gravitational pull. I believe that it is an actual image of a black hole. Objects require some source of light or medium to form an image. Without these mediums there would be no images so I contend that there is no such thing as a "direct image." So is that an image of a black hole?