@vicgrinberg Funny you mention this, but the picture on the left was taken by one of the operators at the IRAM 30m telescope when I was there in 2017 observing for the #EHT. (For comparison, the black hole picture on the right was calculated by the Shutterstock collaboration and published in the journal Business Standard - that I just came across by chance🤷🏼♂️).
vicgrinberg