Hi - Chaos -
You are correct! It is Io - and it would be very tough to maintain any kind of permanent outpost there based on what we know today!
BUT - (and this is my favorite 'escape clause') remember that I paint in the style of the 1950-60's era before we had all the fly-by probes, hi-res photo-and-radar mapping, Hubble, on-site rovers, etc.
So - my viewpoint in my pieces is from the amount of info and conjecture that we had at mid-20th century - the Willy Ley, Chesley Bonestell, Werner von Braun, etc. approach to space travel - which I have always thought was more romantic and held a lot more pizzaz!
I try to make this pretty clear just in the spaceship styling alone - that 'retro' look of pointy noses, fins, single-stage, etc. stuff!
And - of course - my entire output of space art is titled as being a part of a large series titled "Space Art At Mid-Century: The 1950s".
Just my way of having fun and avoiding all of the many technical and 'scientifically-accurate' requirements that would be necessary if I were trying to maintain pace with each new bit of info coming in through our space efforts!
And if I did follow the strict science approach - I would be needing to go back and change, add, paint over, or throw out any pieces based on last year's data since new info has now arrived! That sounds like too much work and no fun!
So even though my art pieces may look realistic and possible, alas - the individual elements themselves will probably never exist in reality!
But - good inquisitive thinking on your part!
Best - Frank H.