Assuming you saw the note about the pict being a composition image....
neither of which are at optical wavelengths....so they can dress them up nicely.
By the way I have visited the Very Large Array..which is west of Socorro New Mexico....
We had designs of selling them some fancy workstations figuring they could use them....but no one seemed interested...they were getting by with old DEC gear.
The Satellites they use to listen are on special little railcars....with railroad sized wheels.
Guess i ought to find a Link....just in case you are interested.
[Hey,...How are you doing....??]
Lol, I’m alive and moving - and posting!!
You know me - I’m more interested in the final results of the beautiful images and not so much in the ‘hows’.
I do enough ‘hows’ in making my own. I enjoyed it Ernest.